10 GPRS mode tasks

3GPP45.008GSM/EDGE Radio subsystem link controlTS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

10.1 Cell Re-selection

10.1.0 General

In A/Gb mode, in GMM Standby and GMM Ready states, cell re-selection is performed by the MS, except when the MS has an ongoing circuit switched connection (e.g. while in dual transfer mode), in which case the cell is determined by the network according to the handover procedures (see subclause 3). When the circuit switched connection is released, the MS shall resume cell re-selection (see subclause 6.7.1).

In Iu mode, in RRC-Idle and RRC-Connected modes, cell re-selection is performed by the MS, except while in RRC-Cell_Dedicated state, in which case the cell is determined by the network according to the handover procedures (see subclause 3). When the MS leaves the RRC-Cell_Dedicated state, the MS shall resume cell re-selection (see subclause 6.7.1).

The cell re-selection procedures defined in subclauses 10.1.1 to 10.1.3 apply in A/Gb mode to the MSs attached to GPRS if a PBCCH exists in the serving cell (See sub-clause 1.4). In Iu mode these procedures apply always.

In A/Gb mode, if PBCCH does not exist, the criteria and algorithms defined in subclauses 10.1.2 and 10.1.3 shall also apply if one or more cells are provided to the MS in a Packet Cell Change Order or Packet Measurement Order message (3GPP TS 44.060 [19]). In this case, the MS shall convert the idle mode cell re-selection parameters, received for the other cells according to clause 6, to GPRS cell re-selection parameters according to table 3a and use the same procedures, except that the MS may measure received signal strength in packet idle mode according to either subclause 6.6.1 or subclause 10.1.1.

Otherwise the MS shall perform cell re-selection according to the idle mode procedures defined in clause 6, except that the MS is only required to monitor full system information on BCCH of the serving cell if indicated by change mark on BCCH or PACCH. A MS that has enabled PEO is only required to monitor system information on BCCH of the serving cell if indicated by the PEO_BCCH_CHANGE_MARK field in a PCH/AGCH message or the time elapsed since it last read SI13 exceeds 24 hours (see 3GPP TS 44.018 [17]). A MS that has enabled EC operation is only required to monitor full system information on EC-BCCH of the serving cell if indicated by the EC-BCCH CHANGE MARK field sent as part of EC-SCH (see 3GPP TS 45.002 [22]) or the time elapsed since it last read the complete EC SI message set exceeds 24 hours (see 3GPP TS 44.018 [17]). If PBCCH exists, the MS is not required to monitor system information on BCCH of the serving cell or any system information of the non-serving cells and only required to monitor system information on PBCCH of the serving cell if indicated by change mark on PBCCH, PCCCH or PACCH.

For both cases (with or without PBCCH), the details of system information monitoring are specified in 3GPP TS 44.060 [19].

In packet transfer mode, broadcast/multicast receive mode or MAC-Shared state, the MS shall always measure received signal strength according to subclause 10.1.1.

The cells to be monitored for cell re-selection are defined in the BA(GPRS) list, which is broadcast on PBCCH. If PBCCH does not exist, BA(GPRS) is equal to BA(BCCH).

In addition, the network may control the cell selection as defined in subclause 10.1.4.

For a multi-RAT MS, cell re-selection to other radio access technologies shall also be possible. If PBCCH exists, the procedures in subclause 10.1.1.3, 10.1.3.2 and 10.1.3.3 shall apply. In A/Gb mode, if PBCCH does not exist, the criteria and algorithms defined in subclauses 10.1.1.3, 10.1.3.2 and 10.1.3.3 shall also apply if GPRS cell re-selection parameters for one or more cells are provided to the MS in a Packet Cell Change Order or Packet Measurement Order message; otherwise the idle mode procedures in subclause 6 shall apply.

10.1.1 Monitoring the received signal level and PBCCH data

10.1.1.0 General

The MS shall measure the received RF signal level on the BCCH carriers of the serving cell and the surrounding cells as indicated in the BA(GPRS) list and optionally the NC_FREQUENCY_LIST, and calculate the received level average (RLA_P) for each carrier.

In addition the MS shall verify the BSIC of the BCCH carriers. Only cells with allowed BSIC shall be considered for re-selection. The allowed BSIC is either a valid BSIC or, for cells in BA(BCCH) where no BSIC is broadcast, a BSIC with allowed NCC part (see subclause 7.2). A valid BSIC is a BSIC broadcast for that carrier in the BA(GPRS) list. For an MS supporting network sharing, a valid BSIC is a BSIC broadcast for that carrier in the BA(GPRS) list with a permitted NCC part (see subclause 7.2).

An MS that has enabled PEO or EC operation shall use the 9 bit BSIC, consisting of the NCC, the BCC and the RCC (see 3GPP TS 23.003), to perform BSIC decoding and confirmation for the BCCH carrier of the serving cell (see subclause 7.2.1).

In addition to what is described in subclauses 10.1.1.1 and 10.1.1.2, an MS supporting SoLSA with SoLSA subscription shall attempt to decode BSIC for the 6 strongest carriers, with LSA IDs to which the MS subscribes. At least one carrier shall be searched every 5 minutes, one after another. In the case the MS has been able to decode the BSIC, the rules described in 10.1.3 shall be followed. The LSA IDs of the carriers are broadcast on PBCCH of the serving cell.

10.1.1.1 Packet idle mode or MAC-Idle state

Whilst in packet idle mode or MAC-Idle state an MS shall continuously monitor all BCCH carriers as indicated by the BA(GPRS) list and the BCCH carrier of the serving cell. At least one received signal level measurement sample on each BCCH carrier shall be taken for each paging block monitored by the MS according to its current DRX mode and its paging group. As the minimum MS shall take one measurement for each BCCH carrier for every 4 second. As the maximum, the MS is however not required to take more than 1 sample per second for each BCCH carrier.

RLA_P shall be a running average determined using samples collected over a period of 5 s to Max {5s, five consecutive paging blocks of that MS}, and shall be maintained for each BCCH carrier. The same number of measurement samples shall be taken for all BCCH carriers, and the samples allocated to each carrier shall as far as possible be uniformly distributed over the evaluation period. At least 5 received signal level measurement samples are required for a valid RLA_P value.

The list of the 6 strongest non‑serving carriers shall be updated at a rate of at least once per running average period.

The MS shall attempt to check the BSIC for each of the 6 strongest non‑serving cell BCCH carriers at least every 14 consecutive paging blocks of that MS or 10 seconds, whichever is greater. If a change of BSIC is detected then the carrier shall be treated as a new carrier.

In the case of a multiband MS, the MS shall attempt to decode the BSIC, if any BCCH carrier with unknown BSIC is detected among the number of strongest BCCH carriers in each band as indicated by the parameter MULTIBAND_REPORTING (see subclause 8.4.3), broadcast on PBCCH, or if PBCCH does not exist, on BCCH.

When requested by the user, the MS shall determine which PLMNs are available as described in subclause 6.6.1. However, for MSs without DRX or with short DRX period (see 3GPP TS 45.002 [22]), considerable interruptions to the monitoring of PPCH or PCH can not be avoided.

When PBCCH is not present in the serving cell and the network controlled cell reselection mode (see subclause 10.1.4) is not set to NC2, the MS shall follow the procedures specified in section 6.6.1 for the acquisition and periodic verification of the parameters affecting cell reselection for the non-serving cells.

10.1.1.2 Packet transfer mode or MAC-Shared state

Whilst in packet transfer mode or MAC-Shared state an MS shall continuously monitor all BCCH carriers as indicated by the BA(GPRS) list and the BCCH carrier of the serving cell. An exception is the case of a MS that has enabled PEO in which case the MS shall, while in packet transfer mode, only monitor the BCCH carrier of the serving cell, as long as it is still considered suitable, see subclause 6.6.1a. In every TDMA frame, a received signal level measurement sample shall be taken on at least one of the BCCH carriers, one after the other. Optionally, measurements during up to 8 TDMA frames per PDCH multiframe may be omitted if required for BSIC decoding or multi-RAT measurements.

RLA_P shall be a running average determined using samples collected over a period of 5 s, and shall be maintained for each monitored BCCH carrier. The same number of measurement samples shall be taken for all monitored BCCH carriers except, if the parameter PC_MEAS_CHAN indicates that the power control measurements shall be made on BCCH (see subclause 10.2.3.1.2), for the serving cell where at least 6 measurement samples shall be taken per 52-multiframe. The samples allocated to each carrier shall as far as possible be uniformly distributed over the evaluation period. At least 5 received signal level measurement samples are required for a valid RLA_P value.

In case of a MS that has enabled EC operation, the MS shall, while in packet transfer mode, monitor the received signal level of the serving cell. The received signal level shall be measured as specified for RF power control in subclause 10.2.3.1.2. The MS need not monitor received signal level of neighbour cells, nor decode BSIC of the serving or neighbour cells.

In some allowed multislot configurations (see 3GPP TS 45.002 [22]) the MS is not able to perform normal received signal level measurements within the TDMA frame. In this case, the MS shall perform the measurements whenever possible according to its measurement capability (see 3GPP TS 45.002 [22]). For downlink packet transfer using any medium access mode (see 3GPP TS 44.060 [19]), the MS shall perform the measurements during the block period where the polling response is sent (T_ra shall apply).

NOTE 1: The network is responsible for providing the necessary opportunities to ensure that the MS will perform the required number of measurements.

The MS shall attempt to check the BSIC for as many non‑serving cell BCCH carriers as possible and as often as possible, and at least every 10 seconds. A multi-RAT MS is allowed to extend this period to 13 seconds, if the neighbour cell list contains cells or frequencies from other RATs. The MS shall use the two Idle frames of the PDCH multiframe for this purpose. These frames are termed "search" frames. A list containing BSIC and timing information for these strongest carriers at the accuracy required for accessing a cell (see 3GPP TS 45.010 [25]) including the absolute times derived from the parameters T1, T2, T3 shall be kept by the MS. This information may be used to schedule the decoding of BSIC and shall be used when re-selecting a new cell in order to keep the switching time at a minimum. When a BCCH carrier is found to be no longer among the reported, BSIC and timing information shall be retained for 10 seconds. (This is in case a cell re-selection command to this cell is received just after the MS has stopped reporting that cell, see subclause 10.1.4.2).

In some allowed multislot configurations (see 3GPP TS 45.002 [22]) the MS is not able to perform BSIC decoding or multi-RAT measurements. In this case, except when the MS performs FCCH search or when the SCH burst falls into the available search window, the MS may:

a) either skip the last transmission burst in the frame immediately preceding the idle frame;

b) or skip the first reception burst in the frame immediately following the idle frame;

c) or delay the transmission of an (E)GPRS RLC/MAC block for data transfer occurring in the radio block period whose last timeslot allocated for such block immediately precedes the idle frame to next available uplink radio block period and in this case the MS may not perform transmission on that timeslot in the block period;

in order to comply to the requirement to verify and decode BSIC information, or in order to perform multi-RAT measurements.

If, after averaging measurement results over 4 PDCH multiframes (1 sec), the MS detects one or more BCCH carriers, among the 6 strongest, whose BSICs are not currently being assessed, then the MS shall as a matter of priority attempt to decode their BSICs.

Thus an MS shall, for a period of up to 5 seconds, devote all search frames to attempting to decode these BSICs. If this fails then the MS shall return to confirming existing BSICs. Having re‑confirmed existing BSICs, if there are still BCCH carriers, among the six strongest, with unknown BSICs, then the decoding of these shall again be given priority for a further period of up to 5 seconds.

The MS shall be able to send the first packet random access (PRACH) at the latest 5+x seconds after a new strongest cell (which is part of the BA(GPRS)) has been activated under the following network conditions: Initial serving cell at RXLEV= -70 dBm, with 6 neighbours at RXLEV= -75 dBm. Then the new BCCH carrier is switched on at RXLEV= -60 dBm. x is the longest time it may take to receive the necessary system information on PBCCH in the new cell.

Note: Because of test equipment limitations it is acceptable to activate the new carrier to replace one of the 6 neighbours.

If either no BSIC can be decoded on a surrounding cell BCCH carrier, or the BSIC is not allowed, then the received signal level measurements on that channel shall be discarded and the MS shall continue to monitor that channel.

If a change of BSIC is detected on a carrier, then any existing received signal level measurement shall be discarded and the carrier shall be treated as a new carrier.

If the BSIC cannot be decoded at the next available opportunities re‑attempts shall be made to decode this BSIC. If the BSIC is not decoded for more than three successive attempts it will be considered lost and any existing received signal level measurement shall be discarded and the MS shall continue to monitor that carrier.

10.1.1.2a Broadcast/multicast receive mode

Whilst in broadcast/multicast receive mode, an MS shall continuously monitor all BCCH carriers as indicated by the BA(GPRS) list and the BCCH carrier of the serving cell. In every TDMA frame, a received signal level measurement sample shall be taken on at least one of the BCCH carriers, one after the other. Optionally, measurements during up to 8 TDMA frames per PDCH multiframe may be omitted if required for BSIC decoding or multi-RAT measurements. Measurements may also be omitted in the TDMA frames where the MS is required to monitor a system information block or a paging block. For this task, minimum performance requirements as for packet idle mode shall apply (see subclause 10.1.1.1).

NOTE: It is expected that in all multislot configurations allowed for MBMS (see 3GPP TS 45.002 [22]) the MS is able to perform normal received signal level measurements within the TDMA frame. Hence, no interruption of the reception is required for this purpose.

The MS shall additionally attempt to check the BSIC for non-serving cell BCCH carriers and, in case of a multi-RAT MS, perform measurements on neighbour cells from other RATs using the search frames. For these tasks, performance requirements as for packet transfer mode shall apply (see subclause 10.1.1.2 and subclause 10.1.1.3).

When the PBCCH is not present in the serving cell, the MS shall not attempt to decode the BCCH data block that contains the parameters affecting cell reselection as described in section 6.6.1 for non-serving cells that have been provided by the System Information message received from the serving cell. Instead, this information shall be provided by the network on PACCH or on BCCH (see 3GPP TS 44.060 [19] and 3GPP TS 44.018 [17]).

10.1.1.3 Monitoring cells of other radio access technologies

For a multi-RAT MS, cells or frequencies with other radio access technologies (excluding E-UTRA) may also be included in the GPRS 3G Cell Reselection list to be monitored (see 3GPP TS 44.060 [19]). This list may be modified by Packet Measurement Order or Packet Cell Change Order messages (see 3GPP TS 44.060 [19]). If cell reselection based on ranking is used, the network controls the measurements for reselection of those cells by the parameter Qsearch_P optionally broadcast on PBCCH or on BCCH if PBCCH does not exist. Qsearch_P defines a threshold and also indicates whether these measurements shall be performed when RLA_P of the serving cell is below or above the threshold.

For a multi-RAT MS supporting E-UTRA, E-UTRA frequencies may be included in the E-UTRAN Neighbour Cell list to be monitored (see 3GPP TS 44.060 [19]). This list may be modified by the Packet Measurement Order message (see 3GPP TS 44.060 [19]). The network controls the measurements for reselection of E-UTRA cells by the parameter THRESH_priority_search broadcast on BCCH. This parameter also controls measurement of inter-RAT cells or frequencies included in the GPRS 3G Cell Reselection list when the inter-RAT cell reselection algorithm based on priority information is used (see subclause 10.1.3.3). The mobile station shall monitor cells of inter-RAT frequencies of higher priority than the serving cell. When RLA_P of the serving cell is below THRESH_priority_search, the mobile station shall monitor cells of inter-RAT frequencies of lower priority than the serving cell. When RLA_P (see subclause 10.1.1.3) of the serving cell is above the threshold, the mobile station is allowed not to monitor cells of inter-RAT frequencies of lower priority than the serving cell.

For this monitoring, the MS may use search frames that are not required for BSIC decoding or interference measurements in packet transfer mode or MAC-Shared state. The MS may use up to 25 search frames per 13 seconds without considering the need for BSIC decoding or packet transfer mode / MAC-Shared state interference measurements in these frames.

Both valid cells as defined in subclause 8.4.7, and any identified cell on a frequency for which not full identification is included in the GPRS 3G Cell Reselection list, shall be considered for re-selection.

In packet transfer mode or MAC-Shared state, a UTRAN capable MS shall be able to send the first access at the latest 10+x seconds (in case of cell reselection based on cell ranking) or 5+T_reselection+x seconds (in case of cell reselection based on priority information, if the UTRAN frequency has lower priority than the serving cell and if RLA_P of the serving cell is below THRESH_priority_search) after a new best UTRAN cell, which is part of the GPRS 3G Cell Reselection list, has been activated under the condition that there is only one UTRAN frequency in the list (and no E-UTRAN frequencies in the E-UTRAN Neighbour Cell list) and that no new GSM cells are activated at the same time and under good radio conditions. x is the longest time it may take to receive the necessary system information in the new cell. As an exception, the time is increased to 65+T_reselection+x seconds in case of a UTRAN capable MS performing cell reselection based on priority information (see subclause 10.1.3.3) if the UTRAN frequency has higher priority than the serving cell. A E-UTRAN capable MS that supports autonomous cell reselection to E-UTRAN in packet transfer mode shall be able to send the first access at the latest 5+T_reselection+x seconds after a new best E-UTRAN cell on a frequency, which is part of the E-UTRANNeighbour Cell list, has been activated if the frequency has lower priority than the serving cell and if RLA_P of the serving cell is below THRESH_priority_search, or within 65+T_reselection+x seconds after it has been activated if the frequency has higher priority than the serving cell, under the condition that there is only one E-UTRAN frequency in the list (and no UTRAN frequencies in the GPRS 3G Cell Reselection list) and that no new GSM cells are activated at the same time and under good radio conditions. For test purposes the following radio conditions can be used: Serving GSM cell at RXLEV= -70 dBm, with 6 GSM neighbours at RXLEV= -75 dBm. Then either an UTRAN FDD neighbour cell or an UTRAN TDD neighbour cell or an E-UTRAN FDD neighbour cell or an E-UTRAN TDD neighbour cell is switched on. The radio conditions for the UTRAN FDD cell are as follows (see 3GPP TS 25.101 [5] for definitions):

Parameter	Unit	UTRAN FDD Cell
CPICH_Ec/Ior	dB	-10
P-CCPCH_Ec/Ior	dB	-12
SCH_Ec/Ior	dB	-12
PICH_Ec/Ior	dB	-15
DPCH_Ec/Ior	dB	-
OCNS_Ec/Ior	dB	-0.94
	dB	10
	dBm/3.84 MHz	-70
CPICH_Ec/Io	dB	-10.4
CPICH RSCP	dBm	-70
FDD_GPRS_Qoffset	integer	5 (-12dB)
FDD_Qmin	integer	7 (-12dB)
FDD_Qmin_Offset	integer	0 (0 dB)
FDD_RSCPmin	integer	6 (-102 dBm)
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

NOTE: The parameters in the table above are valid only for cell reselection based on cell ranking.

The radio conditions for the UTRAN TDD cell (either 3.84 Mcps TDD option or 1.28 Mcps TDD option) are as follows (see 3GPP TS 25.123 [6] for definitions and for the values of the remaining configuration parameters):

Parameter	Unit	UTRAN TDD Cell (3.84 Mcps option)
Timeslot Number		0	8
P-CCPCH_Ec/Ior	dB	-3
SCH_Ec/Ior	dB	-9	-9
SCH_t_offset	integer	0	0
PICH_Ec/Ior	dB		-3
OCNS_Ec/Ior	dB	-3.12	-3.12
P-CCPCH RSCP	dBm	-70	-70
TDD_Qoffset	integer	5 (-90dBm)
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

NOTE: On timeslot 8 the P-CCPCH is not transmitted; on that timeslot, the P-CCPCH RSCP defines the power level of the beacon channel.

NOTE: The parameters in the table above are valid only for cell reselection based on cell ranking.

Parameter	Unit	UTRAN TDD Cell (1.28 Mcps option)
Timeslot Number		0	DwPTS
P-CCPCH_Ec/Ior	dB	-3
DwPCH_Ec/Ior	dB		0
OCNS_Ec/Ior	dB	-3
P-CCPCH RSCP	dBm	-70
TDD_Qoffset	integer	5 (-90dBm)
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

NOTE: The parameters in the table above are valid only for cell reselection based on cell ranking.

The radio conditions for the E-UTRAN FDD cell are as follows (see 3GPP TS 36.101 [37] for definitions):

Parameter		Unit		E-UTRAN FDD Cell
Channel Bandwidth	MHz		10
PSS_RB, SSS_RB, PBCH_RA, PBCH_RB, PCFICH_RA, PHICH_RA, PHICH_RB, PDCCH_RA, PDCCH_RB, PDSCH_RA, PDSCH_RB	dB		0
OCNG_RA (Note 1)	dB		0
OCNG_RB (Note 1)	dB		0
RSRP	dBm/15kHz		-86
Ê_s/I_ot	dB		12
N_oc	dBm/15kHz		-98
E-UTRAN_QRXLEVMIN	integer		0 (-140 dBm)
THRESH_priority_search	integer		15 (search always)
T_reselection	integer		0 (5 s)
THRESH_E-UTRAN_high	integer		24 (48 dB)
E-UTRAN_PRIORITY	integer		higher than GERAN_PRIORITY

OCNG pattern	OP.2 FDD (see 3GPP TS 36.133 [39])
MIMO configuration	single transmitter
Propagation Condition		AWGN
NOTE 1: OCNG shall be used such that the E-UTRAN cell is fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

NOTE: The parameters in the table above are valid if THRESH_E-UTRAN_high_Q and THRESH_E-UTRAN_low_Q are not signalled.

The radio conditions for the E-UTRAN TDD cell are as follows (see 3GPP TS 36.101 [37] for definitions):

Parameter	Unit	E-UTRAN TDD Cell
Channel Bandwidth	MHz	10
PSS_RB, SSS_RB, PBCH_RA, PBCH_RB, PCFICH_RA, PHICH_RA, PHICH_RB, PDCCH_RA, PDCCH_RB, PDSCH_RA, PDSCH_RB	dB	0
OCNG_RA (Note 1)	dB	0
OCNG_RB (Note 1)	dB	0
RSRP	dBm/15kHz	-86
Ê_s/I_ot	dB	12
N_oc	dBm/15kHz	-98
E-UTRAN_QRXLEVMIN	integer	0 (-140 dBm)
THRESH_priority_search	integer	15 (search always)
T_reselection	integer	0 (5 s)
THRESH_E-UTRAN_high	integer	24 (48 dB)
E-UTRAN_PRIORITY	integer	higher than GERAN_PRIORITY

OCNG pattern	OP.2 TDD (see 3GPP TS 36.133 [39])
MIMO configuration	single transmitter
Propagation Condition	AWGN
NOTE 1: OCNG shall be used such that the E-UTRAN cell is fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

NOTE: The parameters in the table above are valid if THRESH_E-UTRAN_high_Q and THRESH_E-UTRAN_low_Q are not signalled.

The allowed access time is increased

– by 5 seconds for each additional UTRAN frequency in the GPRS 3G Cell Reselection list and by the time required for BSIC decoding of new activated GSM cells when the reselection algorithm based on ranking is used, or

– by 5 seconds for each additional UTRAN frequency of lower priority in the GPRS 3G Cell Reselection list when the reselection algorithm based on priority information is used or for each additional E-UTRAN frequency of lower priority in the E-UTRAN Neighbour Cell list and by the time required for BSIC decoding of new activated GSM cells under the condition that RLA_P of the serving cell is below THRESH_priority_search, or

– by 70 seconds for each additional UTRAN frequency of higher priority in the GPRS 3G Cell Reselection list when the reselection algorithm based on priority information is used or for each additional E-UTRAN frequency of higher priority in the E-UTRAN Neighbour Cell list and by the time required for BSIC decoding of new activated GSM cells.

However, multiple UTRAN cells on the same frequency in the GPRS 3G Cell Reselection list does not increase the allowed access time.

NOTE: The requirements above assume that only one of the frequencies in the GPRS 3G Cell Reselection list or in the E-UTRAN Neighbour Cell list is switched on.

In packet transfer mode or MAC-Shared state, for some allowed multislot configurations (see 3GPP TS 45.002 [22]), identification of a UTRAN TDD cell may not be guaranteed. In such cases, the MS may not be able to fulfil the requirement above. If after 5 seconds the MS has not been able to identify a UTRAN TDD cell, the MS is allowed to stop searching for it in the current GSM cell.

In packet idle mode or MAC-Idle state, a UTRAN capable MS shall be able to identify and select a new best UTRAN cell on a frequency, which is part of the GPRS 3G Cell Reselection list, within 30 seconds (in case of cell reselection based on cell ranking) or 25+T_reselection seconds (in case of cell reselection based on priority information, if the UTRAN frequency has lower priority than the serving cell and if RLA_P of the serving cell is below THRESH_priority_search) after it has been activated under the condition that there is only one UTRAN frequency in the list (and no E-UTRAN frequencies in the E-UTRAN Neighbour Cell list) and that no new GSM cells are activated at the same time and under good radio conditions. As an exception, the time is increased to 70+T_reselection seconds in case of a UTRAN capable MS performing cell reselection based on priority information (see subclause 10.1.3.3) if the UTRAN frequency has higher priority than the serving cell. A E-UTRAN capable MS shall be able to identify and select a new best E-UTRAN cell on a frequency, which is part of the E-UTRAN Neighbour Cell list, within 25+T_reselection seconds after it has been activated if the frequency has lower priority than the serving cell and if RLA_P of the serving cell is below THRESH_priority_search, or within 70+T_reselection seconds after it has been activated if the frequency has higher priority than the serving cell under the condition that there is only one E-UTRAN frequency in the list (and no UTRAN frequencies in the GPRS 3G Cell Reselection list) and that no new GSM cells are activated at the same time and under good radio conditions. For test purposes the same radio conditions as for packet transfer can be used. The allowed time is increased

– by 30 seconds for each additional UTRAN frequency in the GPRS 3G Cell Reselection list when the reselection algorithm based on ranking is used, or

– by 30 seconds for each additional UTRAN frequency of lower priority in the GPRS 3G Cell Reselection list when the reselection algorithm based on priority information is used or for each additional E-UTRAN frequency of lower priority in the E-UTRAN Neighbour Cell list under the condition that RLA_P of the serving cell is below THRESH_priority_search, or

However, multiple UTRAN cells on the same frequency in the GPRS 3G Cell Reselection list does not increase the allowed time.

NOTE: The requirements above assume that only one of the frequencies in the GPRS 3G Cell Reselection list or in the E-UTRAN Neighbour Cell list is switched on.

A multi-RAT MS shall be able to monitor cells from other radio access technologies, divided into (depending on the MS capability):

– UTRAN FDD cells on up to 3 FDD frequencies, with a maximum of 32 cells per frequency; and/or
– UTRAN TDD cells on up to 3 TDD frequencies, with a maximum of 32 cells per frequency; and/or
– E-UTRAN FDD cells on up to 3 FDD frequencies; and/or
– E-UTRAN TDD cells on up to 3 TDD frequencies.

The total number of monitored UTRAN cells shall not exceed 64.

An MS supporting E-UTRAN measurements shall be capable of monitoring a minimum total of 7 other RAT carrier frequency layers, comprising of any above defined combination of E-UTRAN FDD, E-UTRAN TDD, UTRAN FDD and UTRAN TDD layers.

The MS shall be capable of performing RSCP and Ec/No measurements of at least 4 best UTRAN cells per UTRAN frequency and RSRP and RSRQ measurements of at least 4 best E-UTRAN cells per E-UTRAN frequency, according to its supported capabilities.

In packet idle mode or MAC-Idle state, the MS shall attempt to read and store UTRAN predefined configurations as specified for idle mode in subclause 6.6.4.

10.1.2 Cell Re-selection Criteria

The following cell re-selection criteria are used for GPRS and Iu mode, whereby (s) denotes the serving cell, and (n_i) denotes the neighbour cells. Different parameter values may apply for each neighbour cell. One set of parameters is broadcast in each cell.

1) The path loss criterion parameter C1 is used as a minimum signal level criterion for cell re-selection for GPRS and Iu mode in the same way as for GSM Idle mode. C1 is the same as defined in subclause 6.4, except that

A = RLA_P ‑ GPRS_RXLEV_ACCESS_MIN
B = GPRS_MS_TXPWR_MAX_CCH ‑ P

The parameters GPRS_RXLEV_ACCESS_MIN and GPRS_MS_TXPWR_MAX_CCH for the serving cell and neighbour cells are broadcast on PBCCH of the serving cell (POWER OFFSET is not used).

While these two parameters have not been received (because the PSI3 information element has not been decoded) default parameters shall be used to calculate C1.

While GPRS_RXLEV_ACCESS_MIN is not available, the MS shall use the RXLEV_ACCESS_MIN parameter.
While GPRS_MS_TXPWR_MAX_CCH is not available, the MS shall use the MS_TXPWR_MAX_CCH parameter.

All values are expressed in dBm.

2) The signal level threshold criterion parameter C31 for hierarchical cell structures (HCS) is used to determine whether prioritised hierarchical GPRS and LSA cell re-selection shall apply and is defined by:

C31(s) = RLA_P(s) – HCS_THR(s) (serving cell)
C31(n) = RLA_P(n) – HCS_THR(n) – TO(n) * L(n) (neighbour cell)

where HCS_THR is the signal threshold for applying HCS GPRS and LSA re-selection. HCS_THR is broadcast on PBCCH of the serving cell. If HCS_THR(s) is not broadcast on PBCCH of the serving cell, HCS_THR(s) and HCS_THR(n) shall be assumed as infinity.

3) The cell ranking criterion parameter (C32) is used to select cells among those with the same priority and is defined by:

C32(s) = C1(s) (serving cell)
C32(n) = C1(n) + GPRS_RESELECT_OFFSET(n) – TO(n) * (1-L(n)) (neighbour cell)
where

GPRS_RESELECT_OFFSET applies an offset and hysteresis value to each cell

TO(n) = GPRS_TEMPORARY_OFFSET(n) * H(GPRS_PENALTY_TIME(n) – T(n)).

L(n) = 0 if PRIORITY_CLASS(n) = PRIORITY_CLASS(s)
1 if PRIORITY_CLASS(n)  PRIORITY_CLASS(s)
In case PRIORITY_CLASS is undefined, L(n) = 0.

H(x) = 0 for x < 0
1 for x  0
GPRS_TEMPORARY_OFFSET applies a negative offset to C31/C32 for the duration of GPRS_PENALTY_TIME after the timer T has started for that cell. T is defined in subclause 6.4.

GPRS_RESELECT_OFFSET, PRIORITY_CLASS, GPRS_TEMPORARY_OFFSET and GPRS_PENALTY_TIME are optionally broadcast on PBCCH of the serving cell. If GPRS_RESELECT_OFFSET, GPRS_TEMPORARY_OFFSET and GPRS_PENALTY_TIME are not broadcast on PBCCH of the serving cell, the MS shall use the default values defined in 3GPP TS 44.060 [19].

10.1.3 Cell Re-selection Algorithm

At least for every new sample or every second, whichever is the greatest, the MS shall update RLA_P and calculate the value of C1, C31 and C32 for the serving cell and the non‑serving cells. The MS shall make a cell re-selection if:

i) The path loss criterion parameter (C1) for the serving cell falls below zero.

ii) A non‑serving suitable cell (see 3GPP TS 43.022 [11]) is evaluated to be better than the serving cell. The best cell is the cell with the highest value of C32 among

– those cells that have the highest PRIORITY_CLASS among those cells that have highest LSA priority among those that fulfil the criterion C31  0, or

– all cells, if no cells fulfil the criterion C31  0.

If the parameter C32_QUAL is set, positive GPRS_RESELECT_OFFSET values shall only be applied to the neighbour cell with the highest RLA_P value of those cells for which C32 is compared above.

LSA priority is defined by the list of LSAs for the subscriber stored on the SIM (see 3GPP TS 51.011 [34]). LSAs are identified by LSA ID(s) broadcast on PBCCH of the serving cell. Cells not belonging to this list are given LSA priority lower than 0. The LSA priority shall be considered only by an MS supporting SoLSA.

PRIORITY_CLASS and C32_QUAL are broadcast on PBCCH of the serving cell.

When evaluating the best cell, the following hysteresis values shall be subtracted from the C32 value for the neighbour cells:

– in GMM Standby state (A/Gb mode) or RRC-Idle mode or RRC-GRA_PCH state (Iu mode), if the new cell is in the same routing area: 0.

– in GMM Ready state (A/Gb mode) or RRC-Cell_Shared state (Iu mode), if the new cell is in the same routing area:
GPRS_CELL_RESELECT_HYSTERESIS. If the parameter C31_HYST is set, GPRS_CELL_RESELECT_HYSTERESIS shall also be subtracted from the C31 value for the neighbour cells.

– in GMM Standby or GMM Ready state (A/Gb mode) or RRC-Idle or RRC_Connected mode (Iu mode), if the new cell is in a different routing area:
RA_RESELECT_HYSTERESIS.

– in case of a cell re-selection occurred within the previous 15 seconds: 5 dB.

GPRS_CELL_RESELECT_HYSTERESIS, C31_HYST and RA_RESELECT_HYSTERESIS are broadcast on PBCCH of the serving cell.

Cell re-selection for any other reason (see 3GPP TS 43.022 [11]) shall take place immediately, but the cell that the MS was camped on shall not be returned to within 5 seconds if another suitable cell can be found. If valid RLA_P values are not available, the MS shall wait until these values are available and then perform the cell re-selection if it is still required. The MS may accelerate the measurement procedure within the requirements in subclause 10.1.1 to minimise the cell re-selection delay.

If no suitable cell is found within 10 seconds, the cell selection algorithm of 3GPP TS 43.022 [11] shall be performed. Since information concerning a number of channels is already known to the MS, it may assign high priority to measurements on the strongest carriers from which it has not previously made attempts to obtain BCCH information, and omit repeated measurements on the known ones.

While in broadcast/multicast receive mode, the MS shall apply the rules defined above for the GMM Ready state.

10.1.3.1 Abnormal cell reselection

In the event of an abnormal release with cell reselection (see 3GPP TS 44.060 [19]) the MS shall determine which cell to be used for this cell reselection attempt according to the following rules.

Within the allowed time, the MS shall attempt abnormal cell reselection on a suitable cell using one of the following two criteria:

a) The MS shall try cells based on BA(GPRS), in the order of C2, starting from the cell with the highest C2 value according to section 6.6.2 item ii sub-item a, excluding the timing requirement of 5 seconds.

b) The MS shall try cells based on BA(GPRS), in the order of C32, starting from the cell with the highest C32 value according to section 10.1.3 item ii.

The criteria, a) or b), to be used shall be determined by which cell reselection algorithm is currently in use according to section 10.1.

The MS is under no circumstances allowed to access a cell to attempt abnormal cell reselection later than 20 seconds after the detection within the MS of the abnormal release causing the abnormal cell reselection attempt. In the case where the 20 seconds elapses without a successful abnormal cell reselection the attempt shall be abandoned, and normal cell reselection shall be performed.

In case the MS is operating in NC2 mode, abnormal cell reselection shall override the NC2 mode and the MS shall perform the algorithm as described in this section.

10.1.3.2 Algorithm for cell re-selection from GSM to UTRAN based on cell ranking

The algorithm in this subclause shall be used for reselection from GSM to UTRAN if the conditions for the use of the cell reselection algorithm based on priority information (see subclause 10.1.3.3) are not satisfied.

If the GPRS 3G Cell Reselection list includes UTRAN frequencies, the MS shall, at least every 5 second update the value RLA_P for the serving cell and each of the at least 6 strongest non serving GSM cells.

The MS shall then reselect a suitable (see TS 25.304 [8]) UTRAN cell if:

– for a TDD cell the measured RSCP value is equal to or greater than TDD_GPRS_Qoffset for a period of 5 s and

– for an FDD cell the following criteria are all met for a period of 5 s:

1) its measured RSCP value exceeds the value of RLA_P for the serving cell and all of the suitable (see 3GPP TS 43.022 [11]) non-serving GSM cells by the value FDD_GPRS_Qoffset,

2) its measured Ec/No value is equal or greater than the value FDD_Qmin – FDD_Qmin_Offset, and

3) its measured RSCP value is equal to or greater than FDD_RSCP_threshold.

In case of a cell reselection occurring within the previous 15 seconds, FDD_GPRS_Qoffset or TDD_GPRS_Qoffset is increased by 5 dB.

Where

– Ec/No and RSCP are the measured quantities, se subclause 8.1.5.

– FDD_RSCP_threshold equals FDD_RSCPmin – min((P_MAX – 21 dBm), 3 dB) if FDD_RSCPmin is broadcast on the serving cell, else Qrxlevmin + Pcompensation + 10 dB, if these parameters are available, otherwise the default value of FDD_RSCPmin.

– Qrxlevmin is the minimum required RX level in the UTRAN FDD cell (dBm), see 3GPP TS 25.304 [8].

– Pcompensation is max(UE_TXPWR_MAX_RACH – P_MAX, 0) (dB), see 3GPP TS 25.304 [8].

– UE_TXPWR_MAX_RACH is the maximum TX power level an MS may use when accessing the UTRAN FDD cell on RACH (dBm), see 3GPP TS 25.304 [8].

– P_MAX is the maximum RF output power of the MS (dBm) in UTRAN FDD mode, see 3GPP TS 25.304 [8].

– FDD_Qmin, FDD_GPRS_Qoffset and optionally FDD_RSCPmin and FDD_Qmin_Offset are broadcast on PBCCH of the serving cell.

– TDD_GPRS_Qoffset is broadcast on PBCCH of the serving cell.

NOTE 1: The parameters required to determine if the UTRAN cell is suitable are broadcast on BCCH of the UTRAN cell. An MS may start reselection towards the UTRAN cell before decoding the BCCH of the UTRAN cell, leading to a short interruption of service if the UTRAN cell is not suitable.

NOTE 2: If FDD_RSCPmin is broadcast, optimum GSM to UTRAN reselection performance is achieved if UTRAN cells at UTRAN coverage border areas are planned for +24 dBm UE power.

NOTE 3: The parameter TDD_Qoffset is an absolute threshold for reselection towards a target UTRAN TDD cell.

The MS shall store the UTRAN cell RSCP suitability criterion parameters above, whenever decoded from a UTRAN FDD cell of an equivalent PLMN while attempting to camp on the UTRAN FDD cell. The most recently decoded parameters from one UTRAN FDD cell of an equivalent PLMN are valid reselection criteria towards all UTRAN FDD cells. This list of parameters shall be cleared after PLMN selection (see 3GPP TS 23.122 [4]).

Cell reselection to UTRAN shall not occur within 5 seconds after the MS has reselected a GSM cell from an UTRAN cell if a suitable GSM cell can be found.

In case of a reselection attempt towards a barred UTRAN cell, the MS shall abandon further reselection attempts towards this UTRAN cell as defined by the T_barred value on the barred UTRAN cell (see 3GPP TS 25.331 [9]).

In case the highest ranked UTRAN cell is not suitable (see 3GPP TS 25.304 [8]) due to being part of the "list of forbidden LAs for roaming" or belonging to a PLMN which is not indicated as being equivalent to the registered PLMN, the MS may abandon further reselection attempts towards this UTRAN cell and all other cells on the same frequency, for a period of up to 20 min. If the MS has to perform cell selection, this limitation shall be removed. If the MS is redirected under GERAN control to a frequency for which the timer is running, any limitation on that frequency shall be removed.

If more than one UTRAN cell fulfils the above criteria, the MS shall select the cell with the greatest RSCP value.

10.1.3.3 Algorithm for inter-RAT cell re-selection based on priority information

This algorithm and its applicability are as specified in sub-clause 6.6.6.

10.1.3.4 Cell selection and re-selection to CSG cells and hybrid cells

If a mobile station is a member of at least one Closed Subscriber Group, i.e. at least one CSG ID and its PLMN ID is included in the MS’s Permitted CSG list, then, in addition to normal cell reselection, the MS shall use an autonomous search function to detect UTRAN and/or E-UTRAN CSG cells and hybrid cells. The autonomous search function shall at least detect previously visited allowed CSG cells and previously visited hybrid cells whose CSG IDs are included in the Permitted CSG list of the MS.

NOTE: The MS does not perform autonomous cell reselection to CSG cells in packet transfer mode if NC2 mode is configured.

Measurement of CSG cells and cell re-selection to CSG cells in packet idle mode and in packet transfer mode shall follow the same rules as in subclause 6.6.7.1 (the performance requirements for the autonomous search and cell re-selection to a previously visited allowed CSG cell shall not apply in packet transfer mode). Cell re-selection to cells detected as hybrid cells in packet idle mode and in packet transfer mode shall follow the rules in subclause 6.6.7.1a (the performance requirements for the autonomous search and cell re-selection to a previously visited hybrid cell, whose CSG ID is included in the Permitted CSG list of the MS, shall not apply in packet transfer mode). Manual search and selection of CSG ID(s) in packet idle mode shall follow the same rules as in subclause 6.6.7.2.

The MS is not required to perform manual search and selection of CSG ID(s) while in packet transfer mode.

10.1.4 Network controlled Cell re-selection

The network may request measurement reports from the MS and control its cell re‑selection. This is indicated by the parameter NETWORK_CONTROL_ORDER. The meaning of the different parameter values is specified as follows:

NC0 Normal MS control
The MS shall perform autonomous cell re-selection.

NC1 MS control with measurement reports
The MS shall send measurement reports to the network as defined in subclause 10.1.4.1.
The MS shall perform autonomous cell re-selection.

NC2 Network control
The MS shall send measurement reports to the network as defined in subclause 10.1.4.1.
The MS shall only perform autonomous cell re-selection when the reselection is triggered by a downlink signalling failure as defined in subclause 6.5 or a random access failure as defined in 3GPP TS 44.018 and 3GPP TS 44.060 or if the cell is barred or the C1 criterion falls below zero. The MS shall only determine whether the cell is barred once camped on the cell.

RESET The MS shall return to the broadcast parameters. Only sent on PCCCH or PACCH.

An exception is the case of a MS that has enabled PEO or EC operation in which case the MS shall only use NC0.

The parameter values NC1 and NC2 only apply in GMM Ready state (A/Gb mode) or RRC-Cell_Shared state (Iu mode). In GMM Standby state (A/Gb mode) or RRC-Idle mode or RRC-GRA_PCH state (Iu mode), the MS shall always use normal MS control independent of the ordered NC mode.

While in broadcast/multicast receive mode, the MS shall operate in Network Control mode NC0 even if it had been ordered otherwise by the network. If in GMM Ready state, the mobile station shall move to NC0 upon entering broadcast/multicast receive mode. When returning to packet idle mode, the mobile station shall revert to the control mode ordered by the network before entering broadcast/multicast receive mode if the mobile station is still in GMM Ready state. If leaving broadcast/multicast receive mode to enter packet transfer mode, the MS shall apply the network control mode commanded by the network in the system information.

A set of measurement reporting parameters (NETWORK_CONTROL_ORDER, NC_REPORTING_PERIOD(s) and optionally REPORT_TYPE, MULTIBAND_REPORTING, SERVING_BAND_REPORTING, XXX_MULTIRAT_REPORTING, XXX_REPORTING_OFFSET, XXX_REPORTING_THRESHOLD, FDD_REPORTING_THRESHOLD_2, REP_PRIORITY, REPORTING_RATE, INVALID_BSIC_REPORTING, SCALE_ORD, FDD_REP_QUANT, Qsearch_P, E-UTRAN_REP_QUANT, E-UTRAN_FDD_REPORTING_THRESHOLD_2, E-UTRAN_TDD_REPORTING_THRESHOLD_2, E-UTRAN_FDD_MEASUREMENT_REPORT_OFFSET, E-UTRAN_TDD_MEASUREMENT_REPORT_OFFSET, Qsearch_P_E-UTRAN, UTRAN_CSG_XXX_REPORTING_THRESHOLD, UTRAN_CSG_FDD_REPORTING_THRESHOLD_2 , E-UTRAN_CSG_XXX_REPORTING_THRESHOLD, E-UTRAN_CSG_XXX_REPORTING_THRESHOLD_2) is broadcast on BCCH and, excepting E-UTRAN parameters, on PBCCH if it exists. XXX indicates, as applicable, GSM frequency band (e.g. 900, 850, etc) or other radio access technology/mode (e.g. FDD, TDD, E-UTRAN, E-UTRAN FDD, E-UTRAN TDD). This set of parameters may also be sent individually to an MS on PACCH or, excepting E-UTRAN parameters, on PCCCH in :

– a PACKET MEASUREMENT ORDER message, in which case it overrides the NC parameters broadcast in the serving cell. These individual parameters are only valid in the serving cell.

– a PACKET CELL CHANGE ORDER message, in which case it overrides the NC parameters broadcast in the target cell. These individual parameters are only valid in the target cell.

The individual parameters are valid until the RESET command is sent to the MS or there is a downlink signalling failure or a random access failure or if the cell is barred or the C1 criterion falls below zero or the MS goes to the GMM Standby state (A/Gb mode) or RRC-Idle mode or RRC-GRA_PCH state (Iu mode) or MS enters dedicated mode or dual transfer mode (A/Gb mode) or RRC-Cell_Dedicated state (Iu mode). Before the MS has acquired NC parameters when entering a new cell, the MS shall assume mode NC0 unless NC0, NC1 or NC2 mode was explicitly commanded by a PACKET CELL CHANGE ORDER message in the previous cell.

A parameter NC_FREQUENCY_LIST may also be sent individually to an MS on PCCCH or PACCH. This list adds/deletes frequencies to the BA(GPRS) both for cell re-selection and for measurement reports. The NC_FREQUENCY_LIST and the REP_PRIORITY are valid until an empty NC_FREQUENCY_LIST is sent to the MS, there is a downlink signalling failure or the MS selects a new cell or the BA(GPRS) that is modified by the NC_FREQUENCY_LIST changes or MS enters dedicated mode (A/Gb mode) or RRC-Cell_Dedicated state (Iu mode).

The same considerations regarding validity apply to lists that include cells with other radio access technologies.

A list given by Packet Cell Change Order applies in the new cell. This list may also include cells with other radio access technologies.

If the MS operates in NC1 or NC2 modes, the network may control UTRAN measurements per individual UTRAN frequency by the parameters Measurement_Control_UTRAN and E-UTRAN measurements per individual E‑UTRAN frequency by the parameters Measurement_Control_E-UTRAN. In NC1 mode, cell reselection requirements shall have priority over reporting requirements. An MS operating in NC1 mode is not required to report a cell if the MS is not monitoring that cell for the purpose of cell reselection.

All signalling for support of network controlled cell re-selection and measurement reports are defined in 3GPP TS 44.060 [19].

10.1.4.1 Measurement reporting

When ordered to send measurement reports, the MS shall continuously monitor all carriers in BA(GPRS) or as indicated by the parameter NC_FREQUENCY_LIST and the BCCH carrier of the serving cell. The measurement requirements are defined in subclause 10.1.1 for the actual packet mode.

For each carrier, the measured received signal level (RXLEV) shall be the average of the received signal level measurement samples in dBm taken on that carrier within the reporting period. The reporting period is defined as follows:

– in packet idle mode or MAC-Idle state, the reporting period is NC_REPORTING_PERIOD_I rounded off to the nearest smaller integer multiple of DRX period if NC_REPORTING PERIOD_I is greater than DRX period, else, the reporting period is DRX period;

– in packet transfer mode or MAC-Shared state, the reporting period is indicated in NC_REPORTING_PERIOD_T.

In averaging, measurements made during previous reporting periods shall always be discarded. The start of the first reporting period may be random.

After each reporting period, the MS shall send a measurement report to BSS (see 3GPP TS 44.060 [19]). The MS shall then discard any previous measurement report, which it has not been able to send. Provided that the MS has received BSIC for all GSM neighbour cells, the parameter REPORT_TYPE indicates if the MS shall use Packet Measurement Report (normal reporting) or Packet Enhanced Measurement Report (enhanced reporting) (see 3GPP TS 44.060 [19]). The measurement report shall contain:

– RXLEV for the serving cell;

– received signal level for the non-serving cells:

– If the requirements for reporting a CSG cell are met, the MS shall follow the requirements specified in sub-clause 8.4.9 for the reporting of a CSG cell. Requirements in sub-clause 8.4.9 take precedence over the requirements in the following bullets.

– For normal measurement reporting, carriers shall be reported if they are among the 6 strongest carriers and BSIC is successfully decoded and allowed (see subclause 10.1.1), i.e. either equal to the BSIC of the list or with allowed NCC part of BSIC. In the latter case, which applies for BA(BCCH) where no BSIC is given, the decoded BSIC shall be included in the report. For an MS supporting network sharing, the cells with BSIC equal to the BSIC of the list shall also have a permitted NCC part (see clause 7.2). If the mobile station has acquired the GSM Neighbour Cell list (see 3GPP TS 44.060 [19]), only cells present in that list shall be included in the report. In the case of a multiband MS, the MS shall report the number of strongest BCCH carriers in each band as indicated by the parameter MULTIBAND_REPORTING (see subclause 8.4.3), broadcast on PBCCH, or if PBCCH does not exist, on BCCH. For multi-RAT MS, the MS shall report the number of best valid cells in each other radio access technology/mode as indicated by the parameters XXX_MULTIRAT_REPORTING, see subclause 8.4.7. In this case, the received signal level is replaced by the relevant measurement quantity (see subclause 8.1.5). Valid cells are defined in subclause 8.4.7;

– For Enhanced Measurement Reporting, cells shall be reported if they are among the at least 6 strongest carriers, and BSIC is successfully decoded and valid (see subclause 10.1.1) or, if indicated by the parameter INVALID_BSIC_REPORTING, with known and allowed NCC part. For an MS supporting network sharing, a valid BSIC is a BSIC of the list with a permitted NCC part. The neighbour cells shall be reported according to the priority defined in subclause 8.4.8.1. For other radio access technology/mode, RXLEV is replaced by the relevant measurement quantity (see subclause 8.1.5);

– BSIC_SEEN (only for Enhanced Measurement Reporting).
Indicates if a GSM cell with invalid BSIC and allowed NCC part of the BSIC is one of the six strongest cells.

In the case of Packet Transfer mode or MAC-Shared state with the NC_REPORTING_PERIOD_T = 0.48 s the MS shall report a new strongest GSM cell in the measurement report at the latest 5 s after a new strongest cell (which is part of the BA(GPRS)) has been activated under the following network conditions: Initial serving cell at RXLEV= -70 dBm, with 6 neighbours at RXLEV= -75 dBm. Then the new BCCH carrier is switched on at RXLEV= -60 dBm.

NOTE: Because of test equipment limitations it is acceptable to activate the new carrier to replace one of the 6 neighbours.

A UTRAN capable MS shall report a new best UTRAN cell, which is part of the neighbour cell list, at the latest 5 seconds after it has been activated under the condition that there is only one UTRAN frequency in the neighbour cell list (and no E-UTRAN frequencies in the neighbour cell list) and that no new GSM cells are activated at the same time and under good radio conditions. A E-UTRAN capable MS that supports measurement reporting of E-UTRAN cells shall report a new best E-UTRAN cell, on a frequency contained in the E-UTRAN Neighbour Cell list, at the latest 5 seconds after it has been activated under the condition that there is only one E-UTRAN frequency in theE-UTRAN Neighbour Cell list (and no UTRAN frequencies in the 3G Neighbour Cell list) and that no new GSM cells are activated at the same time and under good radio conditions. For test purposes the following radio conditions can be used:

Serving GSM cell at RXLEV= -70 dBm, with 6 GSM neighbours at RXLEV= -75 dBm. Then either an UTRAN FDD neighbour cell or an UTRAN TDD neighbour cell or an E-UTRAN FDD neighbour cell or an E-UTRAN TDD neighbour cell is switched on. The radio conditions for the UTRAN FDD cells are as follows (see 3GPP TS 25.101 [5] for definitions):

Parameter	Unit	UTRAN FDD Cell
CPICH_Ec/Ior	dB	-10
P-CCPCH_Ec/Ior	dB	-12
SCH_Ec/Ior	dB	-12
PICH_Ec/Ior	dB	-15
DPCH_Ec/Ior	dB	-
OCNS_Ec/Ior	dB	-0.94
	dB	10
	dBm/3.84 MHz	-70
CPICH_Ec/Io	dB	-10.4
CPICH RSCP	dBm	-70
FDD_MULTIRAT_ REPORTING	integer	1
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

Parameter	Unit	UTRAN TDD Cell (3.84 Mcps option)
Timeslot Number		0	8
P-CCPCH_Ec/Ior	dB	-3
SCH_Ec/Ior	dB	-9	-9
SCH_t_offset	integer	0	0
PICH_Ec/Ior	dB		-3
OCNS_Ec/Ior	dB	-3.12	-3.12
P-CCPCH RSCP	dBm	-70	-70
TDD_MULTIRAT_ REPORTING	integer	1
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

NOTE: On timeslot 8 the P-CCPCH is not transmitted; on that timeslot, the P-CCPCH RSCP defines the power level of the beacon channel.

Parameter	Unit	UTRAN TDD Cell (1.28 Mcps option)
Timeslot Number		0	DwPTS
P-CCPCH_Ec/Ior	dB	-3
DwPCH_Ec/Ior	dB		0
OCNS_Ec/Ior	dB	-3
P-CCPCH RSCP	dBm	-70
TDD_MULTIRAT_ REPORTING	integer	1
Qsearch_P	integer	7 (search always)

Propagation Condition	AWGN

The radio conditions for the E-UTRAN FDD cell are as follows (see 3GPP TS 36.101 [37] for definitions):

Parameter			Unit		E-UTRAN FDD Cell
Channel Bandwidth		MHz		10
PSS_RB, SSS_RB, PBCH_RA, PBCH_RB, PCFICH_RA, PHICH_RA, PHICH_RB, PDCCH_RA, PDCCH_RB, PDSCH_RA, PDSCH_RB		dB		0
OCNG_RA (Note 1)		dB		0
OCNG_RB (Note 1)		dB		0
N_oc		dBm/15kHz		-98
Ê_s/I_ot		dB		12
RSRP		dBm/15kHz		-86
SCH_RP		dBm		-86
Qsearch_P		integer		7 (search always)
Qsearch_P_E-UTRAN		integer		7 (search always)
E-UTRAN_MULTIRAT_ REPORTING	integer			1

OCNG pattern	OP.2 FDD (see 3GPP TS 36.133 [39])
MIMO configuration		single transmitter
Propagation Condition			AWGN
NOTE 1: OCNG shall be used such that the E-UTRAN cell is fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

The radio conditions for the E-UTRAN TDD cell are as follows (see 3GPP TS 36.101 [37] for definitions):

Parameter	Unit		E-UTRAN TDD Cell
Channel Bandwidth	MHz	10
PSS_RB, SSS_RB, PBCH_RA, PBCH_RB, PCFICH_RA, PHICH_RA, PHICH_RB, PDCCH_RA, PDCCH_RB, PDSCH_RA, PDSCH_RB	dB	0
OCNG_RA (Note 1)	dB	0
OCNG_RB (Note 1)	dB	0
N_oc	dBm/15kHz	-98
Ê_s/I_ot	dB	12
RSRP	dBm/15kHz	-86
SCH_RP	dBm	-86
Qsearch_P	integer	7 (search always)
Qsearch_P_E-UTRAN	integer	7 (search always)
E-UTRAN_MULTIRAT_ REPORTING	integer		1

OCNG pattern	OP.2 TDD (see 3GPP TS 36.133 [39])
MIMO configuration	single transmitter
Propagation Condition	AWGN
NOTE 1: OCNG shall be used such that the E-UTRAN cell is fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

The allowed reporting time is increased by 5 seconds for each additional UTRAN frequency in the neighbour cell list or for each additional E-UTRAN frequency in the neighbour cell list and by the time required for BSIC decoding of new activated GSM cells. However, multiple UTRAN cells on the same frequency in the neighbour cell list does not increase the allowed reporting time.

NOTE: The requirements above assume that only one UTRAN or E-UTRAN frequency is switched on.

In case a cell is abandoned for cell reselection attempts due to being part of the "list of forbidden LAs for roaming" (for UTRAN cells) or part of the "list of forbidden TAs for roaming" (for E-UTRAN cells), or belonging to a PLMN which is not indicated as being equivalent to the registered PLMN, as defined in subclause 10.1.3.2 and in subclause 10.1.3.3, the MS may abandon monitoring and reporting this UTRAN or E-UTRAN cell and all other cells on the same frequency for the same period of time that reselection attempts are abandoned. If the MS has received the PCID to TA Mapping information element for the E-UTRAN frequency of the cell (see 3GPP TS 44.060 [19]), the MS may abandon, for the same period of time that reselection attempts are abandoned, monitoring and reporting this E-UTRAN cell and any E-UTRAN cell which known to belong to the same Tracking Area.

NOTE: Monitoring and reporting of E-UTRAN cells whose PCID does not belong to the PCID group associated with the forbidden Tracking Area is not affected.

In packet transfer mode, a multi-RAT MS with no or an empty Permitted CSG list is not required to measure, and shall not report, cells known to be CSG cells; a multi-RAT MS indicating support of neither "UTRA CSG Cells Reporting" nor "E-UTRA CSG Cells Reporting" in the MS Radio Access Capability IE (see 3GPP TS 24.008 [46]) shall not report cells known to be CSG cells other than as part of a cell change notification procedure (see 3GPP TS 44.060 [19]) when the target cell is a CSG cell.

10.1.4.2 Cell re-selection command

A cell re-selection command may be sent from the network to an MS. When the MS receives the command, it shall re-select the cell according to the included cell description and change the network control mode according to the command (see 3GPP TS 44.060 [19]). An exception is the case of a MS that has enabled PEO or EC operation in which case only autonomous cell reselection is used by the MS. The command may include re-selection of another radio access technology/mode.

If an MS receives a cell re-selection command towards a GSM cell to which it is not synchronised, the MS shall indicate a packet cell change failure (see 3GPP TS 44.060 [19]).

If a UTRAN capable MS receives a cell re-selection command towards a not known UTRAN cell (see 3GPP TS 25.133 [7] and 3GPP TS 25.123 [6]), or if a E-UTRAN capable MS receives a cell re-selection command towards a not known E-UTRAN cell (see 3GPP TS 36.133 [39]), then the MS shall search for synchronisation information up to 800 ms. In case of failure, the MS shall return to the old cell and indicate a packet cell change failure (see 3GPP TS 44.060 [19]).

10.1.4.3 Exceptional cases

An MS in network control mode NC1 or NC2 may enter an exceptional case if a circuit switched connection is established, which takes precedence over GPRS cell re-selection. This includes an MS operating in DTM.

In such a case the MS is not required to send measurement reports according to subclause 10.1.4.1, and shall not obey any cell re-selection command.

Whenever the exceptional case ends, the MS shall resume the GPRS mode tasks as specified in sub-clause 10.

10.1a Measurement and Reporting of CSG Cells and hybrid cells

If a mobile station supports "UTRA (respectively E-UTRA) CSG Cells Reporting", it shall support MIB/SIB reading and reporting in packet transfer mode. The MS may acquire routing parameters and the CSG ID for a UTRAN (respectively E-UTRAN) CSG cell by reading MIB and SIB3 (respectively MIB and SIB1) of that cell. The MS is allowed to autonomously skip idle frames or TDMA frames on PDCH to read MIB and SIB and only skips the timeslot(s) or TDMA frame(s) during which either MIB or SIB is transmitted.

A multi RAT mobile station which indicates support of "UTRA CSG Cells Reporting" (respectively "E-UTRA CSG Cells Reporting") in the MS Radio Access Capability IE (see 3GPP TS 24.008) shall report CSG cells and hybrid cells in packet transfer mode according to the procedures in sub-clause 8.4.9 if:

– the cell is the strongest of any cell on the same frequency (see 3GPP TS 25.304 and 3GPP TS 36.304 for the definition of the strongest cell); and

– (for UTRAN FDD CSG cells) the reported value (CPICH Ec/No) is equal to or higher than UTRAN_CSG_FDD_REPORTING_THRESHOLD and the non-reported value (CPICH RSCP) is equal to or higher than UTRAN_CSG_FDD_REPORTING_THRESHOLD_2; and

– (for UTRAN TDD CSG cells) the reported value (P-CCPCH RSCP) is equal to or higher than UTRAN_CSG_TDD_REPORTING_THRESHOLD; and

– (for E-UTRAN FDD CSG cells) the reported value (RSRQ) is equal to or higher than E-UTRAN_CSG_FDD_REPORTING_THRESHOLD and the non-reported value (RSRP) is equal to or higher than E-UTRAN_CSG_FDD_REPORTING_THRESHOLD_2; and

– (for E-UTRAN TDD CSG cells) the reported value (RSRQ) is equal to or higher than E-UTRAN_CSG_TDD_REPORTING_THRESHOLD and the non-reported value (RSRP) is equal to or higher than E-UTRAN_CSG_TDD_REPORTING_THRESHOLD_2; and

– the conditions specified in 3GPP TS 44.060 are met.

The parameters Qsearch_P and Measurement_Control_UTRAN are not applicable to UTRAN CSG cells. The parameters Qsearch_P_E-UTRAN and Measurement_Control_E-UTRAN are not applicable to E-UTRAN CSG cells.

If information about dedicated CSG frequencies is available to the MS, the MS may restrict the measurement of CSG cells only on these dedicated frequencies and on the other frequencies listed in the system information.

10.2 RF Power Control

Sub-clauses 10.2.1 and 10.2.2 do not apply for the PDCH/H in Exclusive MAC mode while in DTM. In this case:

– The MS shall apply the output power ordered by the network on the SACCH to all channels (both for the TCH/H and the PDCH/H).

– The network shall use the same output power on the dedicated connection and on all the blocks on the PDCH/H addressed to the MS. Blocks not addressed to the MS may be transmitted at a lower power level. As an exception, the bursts transmitted on the BCCH carrier shall be transmitted at the BCCH level.

NOTE: Power control is not applicable to point-to-multipoint services if transmission is without ARQ (see 3GPP TS 44.060).

10.2.1 MS output power

The RF output power, P_CH , to be employed by the MS on each individual uplink PDCH shall be:

P_CH = min(₀ – _CH –  * (C + 48), PMAX), (1)

where

_CH is an MS and channel specific power control parameter, sent to the MS in an RLC control message (see 3GPP TS 44.060). For those uplink PDCHs, for which _CHhas not been defined, value 0 shall be used.

₀ = 39 dBm for GSM 400, GSM 700, GSM 850, ER-GSM 900 and GSM900
= 36 dBm for DCS1 800 and PCS 1900

 is a system parameter, broadcast on PBCCH or optionally sent to MS in an RLC control message (see 3GPP TS 44.018 and 3GPP TS 44.060). In case of EC operation,  is given by the ALPHA parameter broadcast in EC SI 2 (see 3GPP TS 44.018 [17]) and the ALPHA_Enable parameter given in assignment messages (see 3GPP TS 44.018 [17] and 3GPP TS 44.060 [19]). If ALPHA_Enable equals 1, the broadcast ALPHA shall be used. If ALPHA_Enable equals 0,  shall be set to 0.

C is the normalised received signal level at the MS as defined in 10.2.3.1.

PMAX is the maximum allowed output power in the cell.

For DCS 1800 and PCS 1900, PMAX =
GPRS_MS_TXPWR_MAX_CCH if present,
MS_TXPWR_MAX_CCH otherwise:

For all other bands, PMAX =

LB_MS_TXPWR_MAX_CCH + Band_offset, if LB_MS_TXPWR_MAX_CCH is present, otherwise GPRS_MS_TXPWR_MAX_CCH if present, otherwise MS_TXPWR_MAX_CCH;

where Band_offset equals:

0 dB for GSM 850, ER-GSM 900 and GSM 900,

-2 dB for GSM 700,

-6 dB for GSM 400.

All power values are expressed in dBm.

When the MS receives new _CHor  values, the MS shall use the new value to update P_CH according to equation (1) 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value, which ensures 2 blocks time for processing even in case of timeslot reconfiguration.

The MS may round the calculated output power to the nearest nominal output power value (see 3GPP TS 45.005) although a higher resolution is preferred. The output power actually transmitted by the MS shall fulfil the absolute accuracy as specified in 45.005. In addition, the transmitted power shall be a monotonic function of the calculated output power and any change of 2 dB in the calculated value shall correspond to a change of 2 1.5 dB in the transmitted value.

The MS shall use the same output power on all four bursts within one radio block. An EC-GSM-IoT capable MS transmitting blind physical layer transmissions shall use the same output power on all transmissions within one fixed uplink allocation.

When accessing a cell on the PRACH or RACH (random access) or on the PACCH when sending the PS Handover Access message, the MS shall use the output power defined by min{PMAX, PRED}, where PRED is the power defined in subclause 4.2. If INIT_PWR_RED is not broadcast, the MS shall use the output power defined by PMAX for all random access attempts.

MS_TXPWR_MAX_CCH is broadcast on the BCCH of the cell. A class 3 DCS1 800 MS shall add to it the value POWER OFFSET broadcast on the BCCH.

GPRS_MS_TXPWR_MAX_CCH is broadcast on PBCCH or CPBCCH of the serving cell and in case of DTM, sent on SACCH and optionally on main DCCH.

LB_MS_TXPWR_MAX_CCH is optionally broadcast on BCCH of the serving cell, and on PBCCH, PCCCH and PACCH if PBCCH is present.

INIT_PWR_RED is broadcast on the BCCH of the cell. After a cell re-selection, within GERAN, if access is needed before INIT_PWR_RED has been acquired from the serving cell, the value in the previous cell shall be applied.

If the MS accesses a cell on the PRACH before receiving GPRS_MS_TXPWR_MAX_CCH on PBCCH and if LB_MS_TXPWR_MAX_CCH is not broadcast, the MS shall determine PMAX using MS_TXPWR_MAX_CCH as default.

If a calculated output power is not supported by the MS, the MS shall use the supported output power which is closest to the calculated output power.

In case of DTM, if a valid C value does not exist, the MS may transmit on each uplink PDCH with the output power signalled in the L1 header of the main SACCH, until a valid C value exists.

The value of _CH shall be the same for both PDCHs constituting an uplink PDCH-pair in RTTI configuration (see 3GPP TS 44.060).

The MS may calculate the C value in dedicated mode.

10.2.2 BTS output power

Downlink power control can only be used when the serving BCCH or CPBCCH and the used PDCH frequencies are in the same frequency band.

On the PDCHs that contain PBCCH or PCCCH, the BTS shall use constant output power, which may be lower than the output power used on BCCH. The power reduction (Pb) used on PCCCH, relative to the output power used on BCCH, is broadcast on PBCCH. For COMPACT, on the blocks that contain CPBCCH, CPCCCH, CFCCH, or CSCH, the BTS shall use constant output power.

On PTCCH/D, the BTS shall use the same output power as for PBCCH, or BCCH if PBCCH does not exist. As an exception to this, the output power for some of the PTCCH/D blocks may be lower in some cases (e.g. with adaptive antennas), but with no requirements for the MS to decode them. The network is however responsible to provide each MS with required TA information.

On other PDCH radio blocks, downlink power control may be used. The BTS shall use the same output power on all four bursts within one radio block except for bursts transmitted on the BCCH carrier. Thus, a procedure may be implemented in the network to control the output power of the downlink transmission based on the Channel Quality Reports.

On PDCHs that do not contain PBCCH or PCCCH and do not use downlink power control (as indicated in the assignment message), the BTS shall use a constant output power with the exception that it is not required to transmit on every block. If the output power used on the transmitted blocks is not equal to (BCCH level – Pb) then the MS is not required to fulfil 3GPP TS 45.005 requirements for the first 25 blocks addressed to this MS.

In case of downlink power control, parameter P0 is used: P0 is defined as a power reduction relative to BCCH or CPBCCH and is included in the assignment message. The value of P0 is not allowed to change during Packet Transfer Mode or MAC-Shared state except in the case a reassignment or a new assignment is established not including any of the previously assigned PDCH(s). A MS shall only have one P0 value at a time.

On each PDTCH/D block, the PR field of the MAC header, if present and if downlink power control is used, shall indicate the output power level used to send this block (see 3GPP TS 44.060). There shall be two PR management cases, PR mode A and PR mode B, as indicated by the PR_MODE parameter in the assignment (see 3GPP TS 44.060):

– in PR mode A, the PR value shall be calculated relative to the P0 value of the MS to which the RLC block is addressed;

– in PR mode B, the network shall use the same P0 value for all the MS with a TBF established on the same PDCH. Consequently, the PR value shall be calculated relative to this P0 value.

The network shall not be allowed to change between PR modes during a TBF. The network shall only allocate to an MS one PR_MODE at a time.

NOTE: Correct MS behaviour can not be assumed if PR mode B is used with adaptive antennas.

The MS is required to meet the 45.005 specification under the following conditions:

For synchronisation purpose, the network shall ensure that each MS with an active TBF in uplink or downlink receives at least one block transmitted with a coding scheme and a modulation that can be decoded by a MS using GPRS, EGPRS or EGPRS2 at least once every 360 millisecond interval (78 TDMA frames) and by a MS using EC-GSM-IoT at least once every 720 millisecond interval. As an exception, the network shall not allocate any DL blocks to an MS with an active UL EC TBF for the duration of a fixed uplink allocation (see 3GPP TS 44.060 [19]). If downlink power control is used:

– in PR mode A, this block shall be addressed (RLC information) to this MS and shall contain a usable PR field (i.e. not set to Not usable as specified in 3GPP TS 44.060);

– in PR mode B, this block shall contain a usable PR field (i.e. not set to Not usable as specified in 3GPP TS 44.060) and does not necessarily have to be addressed to any particular MS. The PR field remains optional in a downlink RLC/MAC control block (see 3GPP TS 44.060).

If downlink power control is used, the BTS shall limit its output power on blocks addressed to a particular MS (USF or RLC blocks) to levels between (BCCH level – P0dB) and (BCCH level – P0dB – 10dB). For other blocks the output power shall not exceed (BCCH level – P0dB). For COMPACT, the BCCH level shall be replaced by the CPBCCH level in these formulas. The output power must be sufficient for the MS for which the RLC block is intended as well as the MS(s) for which the USF is intended (see 3GPP TS 44.060).

As an exception to the rules above, the bursts transmitted on the BCCH carrier shall be transmitted at the BCCH level.

In DTM multislot configurations, if the BTS output power for the CS timeslot is not within the range from the maximum downlink power allowed for the MS on the PS timeslot(s) to a power level 10 dB lower, the MS is not required to fulfil the requirements in 3GPP TS 45.005 on the CS timeslot and/or the PS timeslot(s).

10.2.3 Measurements at MS side

A procedure shall be implemented in the MS to monitor periodically the downlink Rx signal level and quality from its serving cell.

10.2.3.1 Deriving the C value

10.2.3.1.1 Packet idle mode or MAC-Idle state

In packet idle mode or MAC-Idle state, if EC operation is not enabled, the MS shall periodically measure the received signal level of the PCCCH or, if PCCCH is not existing, the CCCH or, for COMPACT, the CPCCCH or CPBCCH, CFCCH, and CSCH. The MS shall measure the received signal level of each paging block monitored by the MS according to its current DRX mode and its paging group.

The normalised C value for each radio block is calculated:

C_block,n = SS_block,n + Pb (2)

where

SS_block,n is the mean of the received signal level of the four normal bursts that compose the block.

Pb is the BTS output power reduction (relative to the output power used on BCCH) used on the channel on which the measurements are performed. For PCCCH, Pb is broadcast on PBCCH. If frequency hopping is being used on the associated physical channel, Pb shall be reduced by 25% for each burst in the block which is received on the BCCH frequency. For BCCH and for COMPACT, Pb =0 (not broadcast).

Finally, the C_block,n values are filtered with a running average filter:

C_n = (1-a)  C_n-1 + a  C_block,n,

where a is the forgetting factor:

a = 1/MIN(n, MAX(5, T_{AVG_W}*N_DRX)).

N_DRX = the average number of monitored blocks per multiframe (see 3GPP TS 45.002).

T_{AVG_W} is broadcast on PBCCH or, if PBCCH does not exist, on BCCH, or on CPBCCH or optionally sent to mobile station in an RLC/MAC control message (see 3GPP TS 44.060).

n is the iteration index. The filter shall be restarted with n=1 for the first sample every time a new cell is selected. If the MS leaves dedicated mode and then enters packet idle mode or MAC-Idle state, the filter shall be restarted with n=1 for the first sample in case there is no valid C value during dedicated mode. Otherwise, when entering packet idle mode or MAC-Idle state, the filter shall continue from the n and C_n values obtained during previous mode. The filter shall also continue from its previous state if N_DRX is changed.

The current C_n value shall be used in formula (1) in subclause 10.2.1 to calculate the output power when the MS transfers its first radio block.

A MS that has enabled EC operation shall measure the C value as described in subclause 6.9.

10.2.3.1.2 Packet transfer mode or MAC-Shared state

10.2.3.1.2.1 MS that have not enabled EC operation

In packet transfer mode or MAC-Shared state, the MS shall use the same received signal level measurements as made for cell reselection on the BCCH carrier of the serving cell (see 10.1.1.2) or, for COMPACT, on the CPBCCH carrier of the serving cell (see 12.4.1.2). The measurements shall be filtered with a running average filter:

C_n = (1-b)  C_n-1 + b  SS_n,

where

SS_n is the received signal level of the measurement samples.

b is the forgetting factor:

b = 1 for n=1;

b = 1/(6*T_{AVG_T}).

n is the iteration index. The filter shall be restarted with n=1 for the first sample at every cell change. When entering packet transfer mode from packet idle mode or MAC-Shared state from MAC-Idle state, the filter shall continue from the n and C_n values obtained during packet idle mode or MAC-Idle state. In case the MS and the network support enhanced DTM CS release procedure, when entering packet transfer mode from DTM, the filter shall continue from the n and C_n values obtained during DTM. When entering DTM from dedicated mode, the filter shall be restarted with n=1 for the first sample in case there is no valid C value during dedicated mode. In case the MS and the network support enhanced DTM CS establishment procedure, when entering DTM from packet transfer mode, the filter shall continue from the n and C_n values obtained during packet transfer mode.

If indicated by the parameter PC_MEAS_CHAN, the MS shall instead measure the received signal level of each radio block on one of the PDCH s in BTTI configuration or on one of the PDCH-pairs in RTTI configuration monitored by the MS for PACCH. If downlink power control is used, PC_MEAS_CHAN shall indicate measurements on the BCCH or CPBCCH, or the MS is not required to fulfil 45.005 requirements. The MS may discard new PC_MEAS_CHAN values received during packet transfer mode or MAC-Shared state. For each downlink radio block C_block,n shall be derived according to formula (2) specified in 10.2.3.1.1 (if PBCCH does not exist, and for COMPACT, Pb = 0). Finally, the C_block,n values are filtered with a running average filter:

C_n = (1-c)  C_n-1 + c  C_block,n,

where c is the forgetting factor:

c = 1 for n=1;

c = 1/(12*T_{AVG_T}).

NOTE 1: This method is suitable in the case where BCCH or CPBCCH is in another frequency band than the used PDCHs.

The current C_n value shall be used to update formula (1) in subclause 10.2.1 each time a new C_n value is obtained or whenever the MS applies new _CH or  values.

For each correctly received block on one of the PDCHs monitored by the MS, the MS shall calculate the variance of the received signal level as:

BL_VAR_n = 1/(j-1)*SUM(SS_k – SS_block,n)², k = 1,…,4

where SS_k is the received signal level of burst k within the block.

SS_block,n is the mean of the received signal level of the j normal bursts that compose the radio block.

j is the number of bursts in the radio block = 4.

If frequency hopping is used and 1 burst of the block is received on the BCCH carrier, that burst shall be discarded from the calculation (j = 3). If 2 bursts are received on the BCCH carrier, the whole block shall be discarded. If 3 bursts are received on the BCCH carrier, the other burst shall be discarded (j = 3).

If more than one PDCH are monitored the MS shall for each block period try to find one correctly received block for the BL_VAR calculation. The block may be taken from any of the monitored PDCHs.

The reported value, SIGN_VAR, shall be the average of BL_VAR within the reporting period. The first reporting period starts with and includes the first assignment message for an uplink or downlink transfer. The reporting period ends, and the subsequent reporting period starts, no earlier than two blocks before the transmission of a quality report and no later than one block before the transmission of a quality report. In averaging, measurements made during previous reporting periods shall always be discarded.

SIGN_VAR shall be included in the channel quality report (see subclause 10.2.3.2.3). If the channel quality report is included in a PACKET RESOURCE REQUEST message, which is retransmitted due to lack of response (see 3GPP TS 44.060), the same or the most recent SIGN_VAR value shall be sent and no new reporting period shall be started. This will ensure that a valid SIGN_VAR value exists. The most recent SIGN_VAR value corresponds to the most recent average of BL_VAR computed since the beginning of the last reporting period.

T_{AVG_T} and PC_MEAS_CHAN are broadcast on PBCCH or, if PBCCH does not exist, on BCCH or on CPBCCH or optionally sent to mobile station in an RLC/MAC control message (see 3GPP TS 44.060).

10.2.3.1.2.2 MS that have enabled EC operation

A MS that has enabled EC operation shall for each correctly received EC-PDTCH block and EC-PACCH block addressed to it derive C_block,n as the mean of the received signal level of either all bursts of the block if Coverage Class 1 is used, or of all blind physical layer transmissions of all bursts of the block if a Coverage Class higher than 1 is used. The measured received signal level shall exclude contributions from other sources such as interference and noise.

The C_block,n values are filtered with a running average filter:

C_n = (1-c)  C_n-1 + c  C_block,n,

where c is the forgetting factor defined as c = 1/(12*T_{AVG_T}).

n is the iteration index.

When entering packet transfer mode from packet idle mode, the filter shall be initiated with n=1 and C₀ = the most recent C value obtained during packet idle mode.

In addition, if the DL_CC_Selection parameter (see 3GPP TS 44.018 [17]) indicates that DL CC selection shall be based on SLA, the MS shall for each block used to derive C_block,n as described above, also derive I_block,n as the mean of the interference plus noise level of all bursts of the block, if Coverage Class 1 is used, or of all blind physical layer transmissions of all bursts of the block, if a Coverage Class higher than 1 is used.

The I_block,n values are filtered with a running average filter:

I_n = (1-c)  I_n-1 + c  I_block,n,

where c is the forgetting factor defined above.

When entering packet transfer mode from packet idle mode, the filter shall be initiated with n=1 and I₀ = the most recent INA value (see subclause 6.9) obtained during packet idle mode.

T_{AVG_T} is not broadcast on EC-BCCH. A default value of T_{AVG_T} = [1/3] shall be used by the mobile station for EC TBF reception in CC1 or CC2 and a default value of T_{AVG_T} = [1/6] for EC TBF reception in CC3 or CC4. T_{AVG_T} may be sent to the mobile station in an RLC/MAC control message (see 3GPP TS 44.060 [19]) overwriting the default value and being valid until the mobile station receives a new value in the serving cell or until it reselects to another cell.

The current C_n value shall be used to update formula (1) in subclause 10.2.1 each time a new C_n value is obtained or whenever the MS applies new _CH or  values.

If the DL_CC_Selection parameter indicates that DL CC selection shall be based on RLA_EC, the current C_n is also reported to the BSS as the C value, as described in subclause 10.2.3.2.3. If the DL_CC_Selection parameter indicates that DL CC selection shall be based on SLA, the current C_n and I_n are combined into the reported C value, as described in subclause 10.2.3.2.3.

10.2.3.2 Derivation of Channel Quality Report

The channel quality is measured as the interference signal level during idle frames of the multiframe, when the serving cell is not transmitting. No measurements shall be taken on the BCCH carrier of the serving cell since the BTS transmits with constant output power on this carrier. For COMPACT, the channel quality is measured as the interference signal level during a PDTCH or PACCH block (see Annex C). No measurements shall be taken on the CPBCCH, CPCCCH, PTCCH, CFCCH, or CSCH since the BTS of the neighbouring co-channel cells either does not transmit or transmits with constant output power.

10.2.3.2.1 Packet transfer mode or MAC-Shared state

In case of a downlink dual carrier assignment, the measurements specified in this subclause shall be made separately on both radio frequency channels.

In case of a downlink multi carrier assignment, how to report the measurements specified in this subclause is described in subclause 10.2.3.2.5.

In packet transfer mode or MAC-Shared state, the MS shall measure the interference signal level on the same radio frequency channel(s) as the assigned PDCHs. The MS shall make these measurements during the search frames and PTCCH frames, which are not required for BSIC decoding or the timing advance procedure. For COMPACT, the MS shall estimate the interference level during PDTCH/PACCH bursts (see Annex C).

Additionally, a multi-RAT MS is allowed to ignore interference signal level measurements in search frames according subclause 10.1.1.3.

The MS shall perform interference signal measurements on as many of the channels (timeslots) as possible and as a minimum:

For multislot class type 1 MS (see 3GPP TS 45.002 [22]), on the PDCH timeslot numbers TSmin to TSmax, where

TSmin = the lowest numbered timeslot assigned (In case of downlink dual carrier assignment: on the respective radio frequency channel. In case of a downlink multi carrier assignment: on the lowest numbered radio frequency channel, or the radio frequency channel assigned for reporting (see 3GPP TS 44.060 [19])) for uplink or downlink transfer including downlink PACCH associated with an uplink transfer.

TSmax = MIN(TSmin + Rx –1, 7).

Rx = the maximum number of receive timeslots that the MS can use per TDMA frame according to its multislot class, or Equivalent multislot class in case of a downlink dual carrier assignment (see 3GPP TS 45.002 [22]).

In case of DTM, the type 1 MS shall perform interference measurements also on the TCH timeslot. Interference measurements need not be supported on PDCH timeslot numbers above the TCH timeslot plus one.

For multislot class type 2 MS (see 3GPP TS 45.002 [22]), on the maximum number of receive timeslots (Rx) that the MS can use per TDMA frame according to its multislot class, or Equivalent multislot class in case of a downlink dual carrier assignment (see 3GPP TS 45.002 [22]), in the following priority order, except that no measurements are required on any timeslot number below those with priority 1:

1) the PDCH timeslot numbers assigned for downlink transfer including the downlink PACCH associated with an uplink transfer;

2) the PDCH timeslot numbers assigned for uplink transfer;

3) other timeslots that would be possible to add for downlink transfer to the current assignment according to the MSs multislot class. If more then one combination of timeslots is possible according to this rule, it is implementation dependent which combination to chose.

Interference measurement timeslots have lower priority than real receiver or transmit timeslot and are not compulsory in case of conflict.

For each channel, every measurement SS_CH,n shall consist of the minimum of the two signal level samples from one search frame and one PTCCH frame. These two measurements should be spaced as closely as possible, but there is no requirement that they shall be contiguous. Thus the SACCH frames are avoided (except for a physical channel with two TCH/Hs) and only the interference is measured. As an exception in case of DTM, every measurement SS_CH,n on the TCH timeslot shall consist of a signal level sample from one search frame only (since SACCH transmission on this slot cannot occur at the search frame). For COMPACT, for each channel, at least two interference measurement sample, SS_CH,n, shall shall be taken every multiframe.

The measured interference shall be averaged in a running average filter:

_CH,n = (1-d)  _CH,n-1 + d  SS_CH,n, _{CH, 0} = 0

where d is the forgetting factor:

d = 1/MIN(n, N_{AVG_I}).

n is the iteration index.

The filter shall be restarted with n=1 for the first sample when the MS enters packet transfer mode or MAC-Shared state or every time a new cell is selected. Channel reassignment during packet transfer mode or MAC-Shared state shall be considered as start of a new packet transfer mode or MAC-Shared state preceded by a zero length packet idle mode or MAC-Idle state.

For each channel, the MS shall perform at least N_{AVG_I} (rounded to the nearest integer) measurements of SS_CH,n before valid _CH values can be determined.

N_{AVG_I} is broadcast on PBCCH or, if PBCCH does not exist, on BCCH or CPBCCH or optionally sent to mobile station in an RLC/MAC control message (see 3GPP TS 44.060).

During GPRS downlink TBF transfer, the MS shall measure the received signal quality as defined in subclause 8.2. The reported value, RXQUAL, shall be the average within the reporting period. Only successfully decoded blocks intended for that MS shall be included in the average. Alternatively, if CS4 only is used during the reporting period, the MS is allowed to report RXQUAL = 7. If CS-4 is used with other CS within a reporting period, the MS shall not take into account CS-4 blocks in the calculation of RXQUAL: the MS shall compute the average taking into account other CS only. If no block has been correctly decoded during the reporting period, the MS shall report RXQUAL = 7, whatever the used CS. The first reporting period starts with and includes the first assignment message for the downlink transfer. The reporting period ends, and the subsequent reporting starts, no earlier than two blocks before the transmission of a quality report and no later than one block before the transmission of a quality report. In averaging, measurements made during previous reporting periods shall always be discarded.

During EGPRS and EC-GSM-IoT downlink TBF transfer, the MS shall measure the received signal quality as defined in subclause 8.2.

In BTTI configuration, the quality parameters shall be, for the radio blocks intended for this MS only (i.e. at least radio blocks where the TFI identifying this MS can be decoded from the RLC/MAC header and radio blocks where the TFI identifying this MS can be decoded from the RLC/MAC control block header: see 3GPP TS 44.060), individually averaged per channel (timeslot, or, for EC-GSM-IoT, if a Coverage Class higher than 1 is used, set of timeslots across which blind physical layer transmissions of the same burst are received, where one BEP value is derived, and where TN is the lowest numbered timeslot of the timeslot set) and per modulation type as follows:

Where: n is the iteration index, incremented per each downlink radio block.

R_n denotes the reliability of the filtered quality parameters for the respective modulation type.

e is the forgetting factor defined below.

x_n denotes the existence of quality parameters for the n^th block for the respective modulation type, i.e. if the radio block is intended for this MS. x_n values 1 and 0 denote the existence and absence of quality parameters, respectively.

In RTTI configuration, the quality parameters shall be, for the radio blocks intended for this MS only (i.e. at least radio blocks where the TFI identifying this MS can be decoded from the RLC/MAC header and radio blocks where the TFI identifying this MS can be decoded from the RLC/MAC control block header: see 3GPP TS 44.060 [19]), individually averaged per channel (timeslot pair where TN is the lower numbered timeslot of the timeslot pair) and per modulation type as follows:

Where: n is the iteration index, incremented per 20ms filtering.

R_n denotes the reliability of the filtered quality parameters for the respective modulation type for the n^th 20ms filtering.

e is the forgetting factor defined below.

x_n,a denotes the existence of quality parameters for the first 10ms RTTI radio block in the n^th 20ms filtering for the respective modulation type, i.e. if the radio block is intended for this MS. x_n,a values 1 and 0 denote the existence and absence of quality parameters, respectively.

x_n,b denotes the existence of quality parameters for the second 10ms RTTI radio block in the n^th 20ms filtering for the respective modulation type, i.e. if the radio block is intended for this MS. x_n,b values 1 and 0 denote the existence and absence of quality parameters, respectively.

MEAN_BEP_TN_n is the mean bit error probability of the timeslot-pair value of the n^th 20ms filtering. CV_BEP_TN_n is the coefficient variation of the bit error probability of the timeslot-pair value of the n^th 20ms filtering.

MEAN_BEP_block,n,a is the mean bit error probability of the first 10ms RTTI radio block in the n^th 20ms filtering. CV_BEP_block,n,a is the coefficient variation of the bit error probability of the first 10ms RTTI radio block of the n^th 20ms filtering.
MEAN_BEP_block,n,b is the mean bit error probability of the second 10ms RTTI radio block in the n^th 20ms filtering. CV_BEP_block,n,b is the coefficient variation of the bit error probability of the second 10ms RTTI radio block of the n^th 20ms filtering.

In case BEP_PERIOD2 is received and with a field value different than 15, e shall be defined as e₂ according to BEP_PERIOD2 as shown in the table below. This allows for individual filtering per MS.

In case BEP_PERIOD2 is received and with the field value 15 (norm), e shall be defined as e₁ according to BEP_PERIOD as shown in the table below. This allows for normal filtering (non-individual). This BEP_PERIOD2 shall be used by the considered MS in the serving cell, until a new BEP_PERIOD2 is received by this MS in the same cell, or the MS leaves the cell or the MS enters packet idle mode or MAC-Idle state.

Field value	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
BEP_PERIOD	Reserved					25	20	15	12	10	7	5	4	3	2	1
e₁	–					0.08	0.1	0.15	0.2	0.25	0.3	0.4	0.5	0.65	0.8	1
BEP_PERIOD2	Norm	90	70	55	40	25	20	15	12	10	7	5	4	3	2	1
e₂	e₁	0.03	0.04	0.05	0.065	0.08	0.1	0.15	0.2	0.25	0.3	0.4	0.5	0.65	0.8	1

BEP_PERIOD2 is sent to individual MS on PACCH D/L. See 3GPP TS 44.060 [19]. In EC-GSM-IoT, BEP_PERIOD2 is not used.

BEP_PERIOD is broadcast on PBCCH or, if PBCCH does not exist, on BCCH. In EC-GSM-IoT, BEP_PERIOD has the fixed value of [10], i.e. e = [0.25].

An MS shall calculate the overall MEAN_BEP, and CV_BEP per modulation type as average over all assigned channels (timeslots, timeslot pairs or, for EC-GSM-IoT, if a Coverage Class higher than 1 is used, sets of timeslots across which blind physical layer transmissions of the same burst are received, where one BEP value is derived) irrespective whether blocks were received on a channel (timeslot, timeslot pair where TN is the lower numbered timeslot of the timeslot pair, or timeslot set where TN is the lowest numbered timeslot of the timeslot set) since it last sent a measurement report to the network as follows:

where n = the iteration index at reporting time

j = the channel number.

In averaging, measurements made during previous reporting periods shall always be discarded.

When entering packet transfer mode or MAC-Shared state and/or when selecting a new cell, the filters shall reset the values of n to 0. When a new channel (timeslot, timeslot pair or timeslot set) is assigned for a downlink TBF, the filters shall reset the values of MEAN_BEP_TN_n-1 , CV_BEP_TN_n-1 and R_n-1 to 0 for this channel (timeslot, timeslot pair where TN is the lower numbered timeslot of the timeslot pair or timeslot set where TN is the lowest numbered timeslot of the timeslot set). If frequency hopping is used, channels that only differ in MAIO shall not be considered new in this context.

The reporting period ends no earlier than two blocks for a GPRS TBF mode and three blocks for an EGPRS TBF mode before the transmission of a quality report and no later than one block before the transmission of a quality report.

10.2.3.2.2 Void

10.2.3.2.3 Measurement reporting

A MS using GPRS shall transfer _CH values and the RXQUAL, C and SIGN_VAR values (see subclause 10.2.3.1.2) to the network in the Channel Quality Report on PACCH. An MS using EGPRS or EGPRS2 shall instead of RXQUAL and SIGN_VAR send MEAN_BEP and CV_BEP.

An MS that has enabled EC operation shall send C, MEAN_BEP and CV_BEP. The reported C value shall be C (as defined in subclause 10.2.3.1.2.2) if the DL_CC_Selection parameter indicates RLA_EC based DL CC selection, or C – I (where C and I are defined in subclause 10.2.3.1.2.2) if the DL_CC_Selection parameter indicates SLA based DL CC selection.

In case of EGPRS or EC-GSM-IoT the MS shall report the overall MEAN_BEP and CV_BEP for the modulations, GMSK and/or 8-PSK (i.e. GMSK_MEAN_BEP, GMSK_CV_BEP; and/or 8PSK_MEAN_BEP, 8PSK_CV_BEP respectively) for which it has received blocks on at least one allocated channel (timeslot, timeslot pair or timeslot set) since it last sent a measurement report to the network.

Additionally, in case of EGPRS, the MS shall report MEAN_BEP_TNx on a per timeslot basis in BTTI configuration, or on a per timeslot pair basis in RTTI configuration where TNx is the lower numbered timeslot of the timeslot pair according to what the network has ordered (see 3GPP TS 44.060 [19]). An MS shall only include MEAN_BEP_TNx values for the modulation scheme with which it has received the larger number of blocks on its currently assigned channels (timeslots or timeslot pairs) since it last sent a measurement report to the network.

In case of EGPRS2 downlink the MS shall report the MEAN_BEP and CV_BEP for up to two modulations schemes for all timeslots in the TBF using the EGPRS BEP Link Quality Measurements Type 2 IE (see 3GPP TS 44.060 [19]). The selection of the modulation schemes to report is based on the blocks which it has received since it last sent a measurement report to the network.

In the case of EGPRS2-A downlink, the MS shall report the MEAN_BEP and CV_BEP only for the two modulation schemes with the highest number of received blocks, not including RLC/MAC control blocks. If an equal number of blocks have been received for two or more modulation schemes that are subject to reporting, the selection of which of these modulation schemes to report is implementation dependent.

In the case of EGPRS2-B downlink, the MS shall report the MEAN_BEP and CV_BEP for the (at most two) modulation schemes with the highest non-zero values of N_BLOCKS_WEIGHTED, where:

– N_BLOCKS_WEIGHTED = 2 x N_BLOCKS, if the modulation scheme is ‘preferred’,

– otherwise, N_BLOCKS_WEIGHTED = min(N_BLOCKS, BEP_PERIOD2, RP/2), if BEP_PERIOD2 has been received by the mobile station or N_BLOCKS_WEIGHTED = min(N_BLOCKS, BEP_PERIOD,RP/2) if BEP_PERIOD2 has not been received by the mobile station,

– N_BLOCKS is the number of blocks using the modulation scheme that were received with a TFI value associated with a TBF corresponding to the mobile station since the previous report, not including RLC/MAC control blocks,

– RP is the number of basic radio block periods that have elapsed since the previous report (i.e. the previous instance of the EGPRS BEP Link Quality Measurements Type 2 IE) was transmitted,

– EGPRS2-B modulation schemes which are ‘preferred’ are: GMSK, QPSK, 16-QAM HSR and 32-QAM HSR.

In case two or more modulation schemes that are subject to reporting have an equal value of N_BLOCKS_WEIGHTED, the modulation scheme with higher N_BLOCKS shall be reported in preference. If these modulation schemes have also equal values of N_BLOCKS, the selection of which of these modulation schemes to report is implementation dependent.

If fewer than two modulation schemes other than GMSK have non-zero values of N_BLOCKS_WEIGHTED and one or more RLC/MAC control blocks with a TFI value associated with a TBF corresponding to the mobile station were received since the previous report, the MS shall also report the link quality for GMSK.

EGPRS2-B downlink is not supported in case of downlink multi carrier assignment.

Additionally, in case of EGPRS2, if commanded by the network according to the LINK_QUALITY_MEASUREMENT_MODE field, the MS shall report both MEAN_BEP_TNx and REPORTED_MODULATION on a per timeslot (in BTTI configuration) or timeslot pair (in RTTI configuration where TNx is the lower number timeslot of the timeslot pair) basis as specified in the EGPRS Timeslot Link Quality Measurements Type 2 IE. More specifically, for each of its currently assigned timeslots or timeslot pairs, an MS shall report the modulation scheme (indicated using the REPORTED_MODULATION field) with which it has received the greatest number of blocks since the last report and shall report the MEAN_BEP_TNx of that modulation scheme (see 3GPP TS 44.060 [19]). In case there are more than one modulation scheme having the same number and the largest number of blocks on a currently assigned timeslot, the MS shall report the MEAN_BEP_TNx for the highest order modulation scheme among those modulation schemes on that timeslot.

The report contains the available _CH values for the radio frequency channel on which the message is sent as well as the RXQUAL, C and SIGN_VAR values (see subclause 10.2.3.1.2) or in case of EGPRS, EGPRS2 and EC-GSM-IoT the MEAN_BEP, C and CV_BEP values, except for a downlink dual carrier assignment (see subclause 10.2.3.2.4) and multi carrier assignment (see subclause 10.2.3.2.5).

The conditions for including the different values, which are not always mandatory, are specified in 3GPP TS 44.060 [19]. The mapping of _chto the reported I_LEVEL value is defined in subclause 10.3.

10.2.3.2.4 Measurement reporting – additional requirements for downlink dual carrier

In case of a downlink dual carrier assignment, the _CH, C, MEAN_BEP (overall and per timeslot or timeslot pair measurements) and CV_BEP values may be reported for each of the radio frequency channels as specified in 3GPP TS 44.060.

If the required set of the measurements (overall MEAN_BEP and CV_BEP, MEAN_BEP_TNx measurements and / or _ch) to be reported for a given carrier as specified in sub-clause 10.2.3.2.3 does not fit in the message used for sending the measurements (see 3GPP TS 44.060) and would otherwise include the overall MEAN_BEP and CV_BEP for two candidate modulations, the mobile station shall, for the corresponding carrier, only send the overall MEAN_BEP and CV_BEP for a single modulation, selected as follows:

– in case of EGPRS or EGPRS2-A, the modulation scheme for which it has received the highest number of blocks since it last sent a measurement report; if an equal number of blocks have been received for the two candidate modulation schemes, the selection of which of these modulation schemes to report is implementation dependent;

– in case of EGPRS2-B, the modulation scheme with the highest non zero value of N_BLOCKS_WEIGHTED; if the two candidate modulation schemes have equal non zero value of N_BLOCKS_WEIGHTED, the modulation scheme with higher N_BLOCKS shall be reported in preference; if these two modulation schemes have also equal values of N_BLOCKS, the selection of which of these modulation schemes to report is implementation dependent.

In addition, when not all MEAN BEP_TNx measurements can be included in the message used for reporting the measurements, the selection of the timeslots for which MEAN BEP_TNx measurements are included is left implementation dependent.

10.2.3.2.5 Measurement reporting – additional requirements for downlink multi carrier

In case of a downlink multi carrier assignment:

– the overall MEAN_BEP and CV_BEP shall be reported per carrier, or per UFPS as indicated by the applicable assignment message (see 3GPP TS 44.060).

– In case of per carrier based reporting additional per timeslot or timeslot pair MEAN_BEP may be reported.

– In case of UFPS based reporting, a single representative value for the overall MEAN_BEP and CV_BEP respectively, averaged over all assigned channels belonging to the same UFPS, is reported for one or two modulations.

– the C values shall be reported in a single value. If the parameter PC_MEAS_CHAN indicates that the downlink measurements for power control shall be made on PDCH a single value shall be reported for the carrier/UFPS (depending on if carrier based or UFPS based reporting is used, see 3GPP TS 44.060) on which the MS was polled.

– the _CH provides the interference measurement information and is reported for the radio frequency channel with lowest number, or on the assigned carrier for reporting as indicated by the applicable assignment message (see 3GPP TS 44.060). _CH is reported for a single radio frequency channel regardless if radio frequency channels are assigned in one or two frequency bands.If the required set of measurements (overall MEAN_BEP, overall CV_BEP, C value, MEAN_BEP_TNx and _ch) to be reported as specified in sub-clause 10.2.3.2.3 does not fit in the message used for sending the measurements (see 3GPP TS 44.060) the mobile station shall always send the overall MEAN_BEP and CV_BEP for the carrier/UFPS (depending on if carrier based or UFPS based reporting is used, see 3GPP TS 44.060) on which the poll was received. If there is room in the message the MS shall report overall MEAN_BEP and CV_BEP for additional carrier(s)/UFPS(s) (if any) beginning with the next in sequence carrier/UFPS (see 3GPP TS 44.060 for carrier/UFPS numbering). If there is not enough room for including an additional carrier/UFPS in the reporting message then the mobile station may attempt to enable its inclusion by only reporting the overall MEAN_BEP and CV_BEP for a single modulation for that carrier/UFPS. If the attempt is successful then the single modulation reported shall be that for which the MS has received the highest number of blocks since it last sent a measurement report; if an equal number of blocks have been received for the two candidate modulation schemes, the selection of which of these modulation schemes to report is implementation dependent.

10.2.3.3 Range of parameters MEAN_BEP and CV_BEP for EGPRS2

The mapping of the MEAN_BEP to the equivalent BEP and the accuracies to which an MS shall be capable of estimating the quality parameters under static channel conditions are given in the following tables for EGPRS2-A DL (16-QAM and 32-QAM) and for EGPRS2-B DL (QPSK, 16-QAM and 32-QAM) respectively. The accuracy requirements below apply for sensitivity limited operation for signal levels above the reference sensitivity level for the type of MS, assuming no changes in transmitted downlink power. The requirements apply for PDTCH/F in A/Gb mode, and the estimated values are averaged applying filtering according to subclause 10.2.3.2.1 with forgetting factor of 0.03.

MEAN_BEP mapping and accuracy for QPSK (EGPRS2-B)

MEAN_BEP	Range of log10(actual BEP)	Expected MEAN_BEP interval	Probability that the expected MEAN_BEP is reported shall not be lower than see NOTE *):
MEAN_BEP_0	[ > -0.60]	MEAN_BEP_0/1	tbd
MEAN_BEP_1	[-0.70 — -0.60]	MEAN_BEP_1/0/2	tbd
MEAN_BEP_2	[-0.80 — -0.70]	MEAN_BEP_2/1/3	tbd
MEAN_BEP_3	[-0.90 — -0.80]	MEAN_BEP_3/2/4	tbd
MEAN_BEP_4	[-1.00 — -0.90]	MEAN_BEP_4/3/5	tbd
MEAN_BEP_5	[-1.10 — -1.00]	MEAN_BEP_5/4/6	tbd
MEAN_BEP_6	[-1.20 — -1.10]	MEAN_BEP_6/5/7	tbd
MEAN_BEP_7	[-1.30 — -1.20]	MEAN_BEP_7/6/8	tbd
MEAN_BEP_8	[-1.40 — -1.30]	MEAN_BEP_8/7/9	tbd
MEAN_BEP_9	[-1.50 — -1.40]	MEAN_BEP_9/8/10	tbd
MEAN_BEP_10	[-1.60 — -1.50]	MEAN_BEP_10/9/11	tbd
MEAN_BEP_11	[-1.70 — -1.60]	MEAN_BEP_11/10/12	tbd
MEAN_BEP_12	[-1.80 — -1.70]	MEAN_BEP_12/11/13	tbd
MEAN_BEP_13	[-1.90 — -1.80]	MEAN_BEP_13/12/14	tbd
MEAN_BEP_14	[-2.00 — -1.90]	MEAN_BEP_14/13/15	tbd
MEAN_BEP_15	[-2.10 — -2.00]	MEAN_BEP_15/13/14/16/17	tbd
MEAN_BEP_16	[-2.20 — -2.10]	MEAN_BEP_16/14/15/17/18	tbd
MEAN_BEP_17	[-2.30 — -2.20]	MEAN_BEP_17/15/16/18/19	tbd
MEAN_BEP_18	[-2.40 — -2.30]	MEAN_BEP_18/16/17/19/20	tbd
MEAN_BEP_19	[-2.50 — -2.40]	MEAN_BEP_19/17/18/20/21	tbd
MEAN_BEP_20	[-2.60 — -2.50]	MEAN_BEP_20/18/19/21/22	tbd
MEAN_BEP_21	[-2.70 — -2.60]	MEAN_BEP_21/19/20/22/23	tbd
MEAN_BEP_22	[-2.80 — -2.70]	MEAN_BEP_22/20/21/23/24	tbd
MEAN_BEP_23	[-2.90 — -2.80]	MEAN_BEP_23/21/22/24/25	tbd
MEAN_BEP_24	[-3.00 — -2.90]	MEAN_BEP_24/22/23/25/26	tbd
MEAN_BEP_25	[-3.10 — -3.00]	MEAN_BEP_25/22/23/24/26/27/28	tbd
MEAN_BEP_26	[-3.20 — -3.10]	MEAN_BEP_26/23/24/25/27/28/29	tbd
MEAN_BEP_27	[-3.30 — -3.20]	MEAN_BEP_27/24/25/26/28/29/30	tbd
MEAN_BEP_28	[-3.40 — -3.30]	MEAN_BEP_28/25/26/27/29/30/31	tbd
MEAN_BEP_29	[-3.50 — -3.40]	MEAN_BEP_29/26/27/28/30/31	tbd
MEAN_BEP_30	[-3.60 — -3.50]	MEAN_BEP_30/27/28/29/31	tbd
MEAN_BEP_31	[< -3.60]	MEAN_BEP_31/28/29/30	tbd
NOTE ) The values in this column apply for PDTCH/F in A/Gb mode*.

MEAN_BEP mapping and accuracy for 16-QAM (EGPRS2-A and EGPRS2-B)

MEAN_BEP	Range of log10(actual BEP)	Expected MEAN_BEP interval	Probability that the expected MEAN_BEP for EGPRS2-A is reported shall not be lower than see NOTE *):	Probability that the expected MEAN_BEP for EGPRS2-B is reported shall not be lower than see NOTE *):
MEAN_BEP_0	[> -0.60]	MEAN_BEP_0/1/2	90 %	tbd
MEAN_BEP_1	[-0.64 — -0.60]	MEAN_BEP_1/0/2/3	90 %	tbd
MEAN_BEP_2	[-0.68 — -0.64]	MEAN_BEP_2/0/1/3/4	90 %	tbd
MEAN_BEP_3	[-0.72 — -0.68]	MEAN_BEP_3/1/2/4/5	90 %	tbd
MEAN_BEP_4	[-0.76 — -0.72]	MEAN_BEP_4/2/3/5/6	90 %	tbd
MEAN_BEP_5	[-0.80 — -0.76]	MEAN_BEP_5/3/4/6/7	90 %	tbd
MEAN_BEP_6	[-0.84 — -0.80]	MEAN_BEP_6/4/5/7/8	90 %	tbd
MEAN_BEP_7	[-0.88 — -0.84]	MEAN_BEP_7/5/6/8/9	90 %	tbd
MEAN_BEP_8	[-0.92 — -0.88]	MEAN_BEP_8/6/7/9/10	90 %	tbd
MEAN_BEP_9	[-0.96 — -0.92]	MEAN_BEP_9/7/8/10/11	90 %	tbd
MEAN_BEP_10	[-1.00 — -0.96]	MEAN_BEP_10/8/9/11/12	90 %	tbd
MEAN_BEP_11	[-1.04 — -1.00]	MEAN_BEP_11/9/10/12/13	90 %	tbd
MEAN_BEP_12	[-1.08 — -1.04]	MEAN_BEP_12/10/11/13/14	90 %	tbd
MEAN_BEP_13	[-1.12 — -1.08]	MEAN_BEP_13/11/12/14/15	90 %	tbd
MEAN_BEP_14	[-1.16 — -1.12]	MEAN_BEP_14/12/13/15/16	90 %	tbd
MEAN_BEP_15	[-1.20 — -1.16]	MEAN_BEP_15/13/14/16	90 %	tbd
MEAN_BEP_16	[-1.36 — -1.20]	MEAN_BEP_16/14/15/17	90 %	tbd
MEAN_BEP_17	[-1.52 — -1.36]	MEAN_BEP_17/16/18	90 %	tbd
MEAN_BEP_18	[-1.68 — -1.52]	MEAN_BEP_18/17/19	90 %	tbd
MEAN_BEP_19	[-1.84 — -1.68]	MEAN_BEP_19/18/20	90 %	tbd
MEAN_BEP_20	[-2.00 — -1.84]	MEAN_BEP_20/19/21	90 %	tbd
MEAN_BEP_21	[-2.16 — -2.00]	MEAN_BEP_21/20/22	90 %	tbd
MEAN_BEP_22	[-2.32 — -2.16]	MEAN_BEP_22/21/23	90 %	tbd
MEAN_BEP_23	[-2.48 — -2.32]	MEAN_BEP_23/22/24	90 %	tbd
MEAN_BEP_24	[-2.64 — -2.48]	MEAN_BEP_24/23/25	90 %	tbd
MEAN_BEP_25	[-2.80 — -2.64]	MEAN_BEP_25/23/24/26/27	90 %	tbd
MEAN_BEP_26	[-2.96 — -2.80]	MEAN_BEP_26/24/25/27/28	90 %	tbd
MEAN_BEP_27	[-3.12 — -2.96]	MEAN_BEP_27/25/26/28/29	90 %	tbd
MEAN_BEP_28	[-3.28 — -3.12]	MEAN_BEP_28/26/27/29/30	90 %	tbd
MEAN_BEP_29	[-3.44 — -3.28]	MEAN_BEP_29/27/28/30/31	90 %	tbd
MEAN_BEP_30	[-3.60 — -3.44]	MEAN_BEP_30/28/29/31	90 %	tbd
MEAN_BEP_31	[< -3.60]	MEAN_BEP_31/29/30	90 %	tbd
NOTE ) The values in this column apply for PDTCH/F in A/Gb mode*.

MEAN_BEP mapping and accuracy for 32-QAM (EGPRS2-A and EGPRS2-B)

MEAN_BEP	Range of log10(actual BEP)	Expected MEAN_BEP interval	Probability that the expected MEAN_BEP for EGPRS2-A is reported shall not be lower than see NOTE *):	Probability that the expected MEAN_BEP for EGPRS2-B is reported shall not be lower than see NOTE *):
MEAN_BEP_0	[> -0.60]	MEAN_BEP_0/1/2	90 %	tbd
MEAN_BEP_1	[-0.64 — -0.60]	MEAN_BEP_1/0/2/3	90 %	tbd
MEAN_BEP_2	[-0.68 — -0.64]	MEAN_BEP_2/0/1/3/4	90 %	tbd
MEAN_BEP_3	[-0.72 — -0.68]	MEAN_BEP_3/1/2/4/5	90 %	tbd
MEAN_BEP_4	[-0.76 — -0.72]	MEAN_BEP_4/2/3/5/6	90 %	tbd
MEAN_BEP_5	[-0.80 — -0.76]	MEAN_BEP_5/3/4/6/7	90 %	tbd
MEAN_BEP_6	[-0.84 — -0.80]	MEAN_BEP_6/4/5/7/8	90 %	tbd
MEAN_BEP_7	[-0.88 — -0.84]	MEAN_BEP_7/5/6/8/9	90 %	tbd
MEAN_BEP_8	[-0.92 — -0.88]	MEAN_BEP_8/6/7/9/10	90 %	tbd
MEAN_BEP_9	[-0.96 — -0.92]	MEAN_BEP_9/7/8/10/11	90 %	tbd
MEAN_BEP_10	[-1.00 — -0.96]	MEAN_BEP_10/8/9/11/12	90 %	tbd
MEAN_BEP_11	[-1.04 — -1.00]	MEAN_BEP_11/9/10/12/13	90 %	tbd
MEAN_BEP_12	[-1.08 — -1.04]	MEAN_BEP_12/10/11/13/14	90 %	tbd
MEAN_BEP_13	[-1.12 — -1.08]	MEAN_BEP_13/11/12/14/15	90 %	tbd
MEAN_BEP_14	[-1.16 — -1.12]	MEAN_BEP_14/12/13/15/16	90 %	tbd
MEAN_BEP_15	[-1.20 — -1.16]	MEAN_BEP_15/13/14/16	90 %	tbd
MEAN_BEP_16	[-1.36 — -1.20]	MEAN_BEP_16/14/15/17	90 %	tbd
MEAN_BEP_17	[-1.52 — -1.36]	MEAN_BEP_17/16/18	90 %	tbd
MEAN_BEP_18	[-1.68 — -1.52]	MEAN_BEP_18/17/19	90 %	tbd
MEAN_BEP_19	[-1.84 — -1.68]	MEAN_BEP_19/18/20	90 %	tbd
MEAN_BEP_20	[-2.00 — -1.84]	MEAN_BEP_20/19/21	90 %	tbd
MEAN_BEP_21	[-2.16 — -2.00]	MEAN_BEP_21/20/22	90 %	tbd
MEAN_BEP_22	[-2.32 — -2.16]	MEAN_BEP_22/21/23	90 %	tbd
MEAN_BEP_23	[-2.48 — -2.32]	MEAN_BEP_23/22/24	90 %	tbd
MEAN_BEP_24	[-2.64 — -2.48]	MEAN_BEP_24/23/25	90 %	tbd
MEAN_BEP_25	[-2.80 — -2.64]	MEAN_BEP_25/23/24/26/27	90 %	tbd
MEAN_BEP_26	[-2.96 — -2.80]	MEAN_BEP_26/24/25/27/28	90 %	tbd
MEAN_BEP_27	[-3.12 — -2.96]	MEAN_BEP_27/25/26/28/29	90 %	tbd
MEAN_BEP_28	[-3.28 — -3.12]	MEAN_BEP_28/26/27/29/30	90 %	tbd
MEAN_BEP_29	[-3.44 — -3.28]	MEAN_BEP_29/27/28/30/31	90 %	tbd
MEAN_BEP_30	[-3.60 — -3.44]	MEAN_BEP_30/28/29/31	90 %	tbd
MEAN_BEP_31	[< -3.60]	MEAN_BEP_31/29/30	90 %	tbd
NOTE ) The values in this column apply for PDTCH/F in A/Gb mode.*

For a coding on 4 bits, i.e. for timeslot based EGPRS2 link quality reports, the 4 most significant bits are used.

NOTE1: MEAN_BEP is calculated and filtered according to the procedure described in section 10.2.3.2.1.

NOTE2: The accuracy requirements above take into account possible fluctuations of the bit error rate due to adaptiveness of receivers.

NOTE3: Testing requires measurement of the actual bit error rate and assessment of MEAN_BEP reports based on the same period of time.

The mapping table for the coefficient of variation of the channel quality is defined as follows for QPSK, 16-QAM and 32-QAM:

CV_BEP 0	2.00	> CV_BEP >	1.75
CV_BEP 1	1.75	> CV_BEP >	1.50
CV_BEP 2	1.50	> CV_BEP >	1.25
CV_BEP 3	1.25	> CV_BEP >	1.00
CV_BEP 4	1.00	> CV_BEP >	0.75
CV_BEP 5	0.75	> CV_BEP >	0.50
CV_BEP 6	0.50	> CV_BEP >	0.25
CV_BEP 7	0.25	> CV_BEP >	0.00

The accuracy requirements for CV_BEP need not be specified since they are directly linked to those for MEAN_BEP. Nevertheless, the CV_BEP measured at the MS shall be the one used by this MS.

10.2.4 Measurements at BSS side

A procedure shall be implemented in the BSS to monitor the uplink Rx signal level and quality on each uplink PDCH, active as well as inactive.

The BSS shall also measure the Rx signal level and the quality of a specific MS packet transfer.

10.2a Packet-switched Handover

If an MS receives a packet-switched handover command towards a GSM cell which it is not synchronised to, then the MS shall search for synchronisation information up to 300 ms. In case of failure, the MS shall indicate a packet cell change failure (see 3GPP TS 44.060).

If a multi-RAT MS receives a packet-switched handover command towards a not known cell (see 3GPP TS 25.133 and 3GPP TS 25.123 for UTRAN or 3GPP TS 36.133 for E-UTRAN), then the multi-RAT MS shall search for synchronisation information up to 800 ms. In case of failure, the multi-RAT MS shall indicate a packet cell change failure (see 3GPP TS 44.060).

Details of the synchronization mechanisms appear in 3GPP TS 45.010.

10.3 Measurement requirements

The accuracy of the received signal level and interference measurements shall be as defined in subclause 8.1.2. For COMPACT, the accuracy of the interference estimate, which is based upon received signal level during a PDTCH/PACCH block (see Annex C), is ± 2 dB in addition to the accuracy of the received signal level defined in subclause 8.1.2 without downlink power control activated on the serving cell. The measured signal strength values shall be mapped to the reported C values as defined for RXLEV in subclause 8.1.4. If included in a PACKET DOWNLINK ACK/NACK or a PACKET RESOURCE REQUEST message, the measured interference level, g_CH, shall be mapped to a reported I_LEVEL value between 0 and 15, relative to reported C value as follows:

I_LEVEL 0 = interference level is greater than C
I_LEVEL 1 = interference level is less than or equal to C and greater than C – 2 dB
I_LEVEL 2 = interference level is less than or equal to C – 2 dB and greater than C – 4 dB
:
:
I_LEVEL 14 = interference level is less than or equal to C – 26 dB and greater than C – 28 dB
I_LEVEL 15 = interference level is less than or equal to C – 28 dB

10.4 Control parameters

A non-exhaustive list of parameters employed to control the radio links for GPRS are shown in table 3.

Table 3: Radio sub-system link control parameters for GPRS
((s) and (n) denote serving cell and non-serving cell respectively)

Parameter name	Description	Range	Bits	Channel
BA(GPRS)	BCCH Allocation for GPRS re-selection Note: If PBCCH does not exist, BA(GPRS) = BA(BCCH)	‑	‑	PBCCH D/L
BSIC(s+n)	Base station Identification Code for carriers in BA(GPRS) and the serving BCCH carrier	0‑63	6	PBCCH D/L (**)
MS_TXPWR_MAX_CCH	See table 1.	0-31	5	BCCH D/L
POWER OFFSET(s)	See table 1.	0‑3	2	BCCH D/L
RXLEV_ACCESS_MIN	See table 1.	0‑63	6	BCCH D/L
GPRS_MS_TXPWR_MAX_CCH(s+n)	The maximum TX power level an MS may use when accessing the system	0-31	5	PBCCH D/L
LB_MS_TXPWR_MAX_CCH(s)	The maximum allowed TX power level for GPRS access on the serving cell, on all other than DCS 1800 and PCS 1900 frequency bands. 0 = 43 dBm, 1 = 41 dBm, 2 = 39 dBm,…,18 = 7 dBm, 19 = 5 dBm, 20 = 5 dBm,…,31 = 5dBm.	0-31	5	BCCH D/L PBCCH D/L PCCCH D/L PACCH D/L
GPRS_RXLEV_ACCESS_MIN(s+n)	Minimum received signal level at the MS required for access to the system.	0‑63	6	PBCCH D/L
GPRS_RESELECT_OFFSET (n)	Applies an offset and hysteresis to the C32 re-selection criterion. -52, -48,…, -12, -10,…, 12, 16, …,48 dB	0-31	5	PBCCH D/L
PRIORITY_CLASS (s+n)	The HCS priority for the cells	0-7	3	PBCCH D/L
LSA ID (s+n)	The LSA identities for the cells			PBCCH D/L
HCS_THR(s+n)	HCS signal level threshold -110, -108,…, -50, infinity dB	0-31	5	PBCCH D/L
GPRS_TEMPORARY_OFFSET(n)	Applies a negative offset to C32 for the duration of PENALTY_TIME. 0, 10,…, 60 dB, infinity	0‑7	3	PBCCH D/L
GPRS_PENALTY_TIME(n)	Gives the duration for which the temporary offset is applied. 10, 20,…, 320 seconds	0‑31	5	PBCCH D/L
GPRS_CELL_RESELECT_ HYSTERESIS	Additional hysteresis applied in GMM Ready state or RRC-Cell_Shared state for cells in the same RA. 0, 2,…, 14 dB	0-7	3	PBCCH D/L
RA_RESELECT_HYSTERESIS	Additional hysteresis applied for cells in different RAs. 0, 2,…, 14 dB	0-7	3	PBCCH D/L
CELL_RESELECT_HYSTERESIS	Additional hysteresis applied for cells in different RAs if PCCCH does not exist. See table 1.	0-7	3	BCCH D/L
C32_QUAL	Flag indicating an exception rule for GPRS_RESELECT_OFFSET	1/0	1	PBCCH D/L
C31_HYST	Flag indicating if hysteresis shall be applied to C31.	1/0	1	PBCCH D/L
MULTIBAND_REPORTING	The number of carriers from each frequency band that shall be included in the list of 6 strongest cells or in the measurement report.	0-3	2	PBCCH D/L BCCH D/L
	Power control parameter 0,0.1,…,1	0-10	4	PBCCH D/L PACCH D/L (**)
Pb	Power reduction used by BTS on PBCCH blocks, relatively to the output power used on BCCH 0, -2,…, -30 dB	0-15	4	PBCCH D/L PACCH D/L
PC_MEAS_CHAN	Flag that indicates whether the downlink measurements for power control shall be made on BCCH or PDCH.	0/1	1	PBCCH D/L PACCH D/L (**)
T_{AVG_W}	Signal level filter period for power control in packet idle mode or MAC-Idle state 2^(k/2)/ 6 multiframes, k = 0,1,…, 25	0-25	5	PBCCH D/L PACCH D/L (**)
T_{AVG_T}	Signal level filter period for power control in packet transfer mode or MAC-Shared state 2^(k/2)/ 6 multiframes, k = 0,1,…, 25	0-25	5	PBCCH D/L PACCH D/L EC-PACCH D/L (**)
N_{AVG_I}	Interference signal level filter constant for power control 2^(k/2), k = 0,1,…, 15	0-15	4	PBCCH D/L PACCH D/L (**)
(continued)

Table 3 (concluded): Radio sub‑system link control parameters for GPRS

Parameter name		Description		Range		Bits				Channel
BEP_PERIOD		Filter constant for EGPRS Channel quality measurements. See subclause 10.2.3.2.1		0-15		4				PBCCH D/L (**)
BEP_PERIOD2		Filter constant for EGPRS Channel quality measurements. See subclause 10.2.3.2.1		0-15		4				PACCH D/L
NETWORK_CONTROL_ORDER		Controls cell re-selection and measurement reporting		0-3		2				PBCCH D/L PCCCH D/L PACCH D/L (**)
NC_FREQUENCY_LIST		Frequency list for cell re-selection measurement reporting		–		–				PCCCH D/L PACCH D/L
NC_REPORTING_PERIOD_I NC_REPORTING_PERIOD_T		Time period for measurement reporting 0.48, 0.96, 1.92, …, 61.44 seconds		0-7		3				PBCCH D/L PCCCH D/L PACCH D/L (**)
NCC_PERMITTED		Bit map of NCC part of BSIC for which the MS shall report enhanced measurements.		–		8				PBCCH D/L PCCCH D/L PACCH D/L
SCALE		Indication of the offset, which applies for the reported RXLEV values. 0 = 0 dB, 1 = +10 dB		0-1		1			PACCH U/L
SCALE_ORD		Indication of the offset, which shall be used for the reported RXLEV values. 0 = +0 dB, 1 = + 10 dB, 2 = automatic Default value = 0 dB.		0-2		2			PBCCH D/L PCCCH D/L PACCH D/L (**)
CELL_BAR_ACCESS_2		See table 3b		0/1		1			PBCCH D/L
Qsearch_P		Search for UTRAN FDD cells if signal level below threshold (0-7): – 98, – 94, … , – 74 dBm,  (always) or above threshold (8-15): – 78, – 74, … , – 54 dBm,  (never). Default value =  (never). Search for UTRAN TDD cells if signal level below threshold (0-7): – 98, – 94, … , – 74 dBm,  (always) or above threshold (8-15): – 90, – 86, … , -66 dBm,  (never).		0-15		4				PBCCH D/L PCCCH D/L PACCH D/L (**) (See note 1)
FDD_GPRS_Qoffset		Applies an offset to RLA_P for UTRAN FDD cell re‑selection, 0 = –  (always select a cell if acceptable), 1 = -28 dB, 2 = -24 dB, … , 15 = 28 dB. Default value = 0 dBm.		0-15		4					PBCCH D/L
TDD_GPRS_Qoffset		An absolute threshold of RSCP for UTRAN TDD cell re-selection, 0 = -105dBm, 1 = -102dBm, 2=-99dBm, 3 = -96dBm, 4 = -93dBm, 5 = -90dBm, 6 = -87dBm, 7 = -84dBm, 8 = -81dBm, 9 = -78dBm, 10 = -75dBm, 11 = -72dBm, 12 = -69dBm, 13 = -66dBm, 14 = -63dBm, 15 = -60dBm. Default value = -90dBm.		0-15		4					PBCCH D/L
FDD_Qmin		A minimum threshold for Ec/No for UTRAN FDD cell re-selection, 0= -20dB, 1= -6dB, 2= -18dB, 3= -8dB, 4= -16dB, 5= -10dB, 6= -14dB, 7= -12dB. Default value= -12dB.		0-7		3					PBCCH D/L
FDD_Qmin_Offset		Applies an offset to FDD_Qmin value, 0 = 0 dB, 1 = 2 dB, 2 = 4 dB, 3 = 6 dB, 4 = 8 dB, 5 = 10 dB, 6 = 12 dB, 7 = 14 dB. Default value = 0 dB.		0-7		3					PBCCH D/L PCCCH D/L PACCH D/L (**)
FDD_RSCPmin		A minimum threshold of RSCP for UTRAN FDD cell re-selection, 0 = -114 dBm, 1 = -112 dBm, 2 = -110 dBm, 3 = -108 dBm, 4 = -106 dBm, 5 = -104 dBm, 6 = -102 dBm, 7 = -100 dBm, 8 = -98 dBm, 9 = -96 dBm, 10 = -94 dBm, 11 = -92 dBm, 12 = -90 dBm, 13 = -88 dBm, 14 = -86 dBm, 15 = -84 dBm. Default value = -102 dBm.		0-15		4					PBCCH D/L PCCCH D/L PACCH D/L (**)
XXX_MULTIRAT_REPORTING		The number of cells from the access technology/mode XXX (one or more) that shall be included in the measurement report.		0-3		2					PBCCH D/L PCCCH D/L PACCH D/L (**)
SERVING_BAND_REPORTING		The number of cells from the GSM serving frequency band that shall be included in the measurement report. Default value = 3		0-3		2			PBCCH D/L PCCCH D/L PACCH D/L (**)
REPORT_TYPE		Indicates which report type the MS shall use, 0 = enhanced, 1 = normal. Default value = normal.		0/1		1			PBCCH D/L PCCCH D/L PACCH D/L (**)
REP_PRIORITY		Indicates the reporting priority per cell, 0 = normal, 1 = high Default value = normal		0/1		1			PBCCH D/L PCCCH D/L PACCH D/L (**)
REPORTING_RATE		Indicates the allowed reporting rate, 0 = normal, 1 = reduced		0/1		1			PBCCH D/L PCCCH D/L PACCH D/L (**)
INVALID_BSIC_REPORTING		Indicates if GSM cells with invalid BSIC and allowed NCC part may be reported, 0 = no, 1 = yes		0/1		1			PBCCH D/L PCCCH D/L PACCH D/L (**)
XXX_REPORTING_THRESHOLD		Apply priority reporting if the reported value is above threshold for GSM frequency band or access technology/mode XXX (one or more), 0, 6, … , -36,  (never). Default value = always.		0-7		3			PBCCH D/L PCCCH D/L PACCH D/L (**)
FDD_REPORTING_THRESHOLD_2		Reporting threshold for the CPICH parameter (Ec/No or RSCP) that is not reported according to FDD_REP_QUANT. Default value = 0 (disabled)		0-63		6			PBCCH D/L PCCCH D/L PACCH D/L (**)
XXX_REPORTING_OFFSET		Apply an offset to the reported value when prioritising the cells for reporting for GSM frequency band or access technology/mode XXX (one or more), 0, 6, … , 42. Default value = 0.		0-7		3			PBCCH D/L PCCCH D/L PACCH D/L (**)
FDD_REP_QUANT		Indicates the reporting quantity for UTRAN FDD cells, 0 = RSCP, 1 = Ec/No		0/1		1			PBCCH D/L PCCCH D/L PACCH D/L (**)
RTD		The real time difference to other GSM cells, modulo 51 TDMA frames, step: 1 or 1/64 TDMA frame		0-50 or 0-3263		6 or 12			PBCCH D/L (**)
3G_BA_IND		Sequence number of 3G neighbour cell list and/or E-UTRAN neighbour cell list		0/1		1			PBCCH DL PCCCH D/L PACCH D/L (**)
THRESH_GSM_low		A threshold below which the MS is allowed to reselect to lower priority layers, 0 = 0 dB, 1 = 2 dB, 2 = 4 dB, …, 13 = 26 dB, 14 = 28 dB, 15 =  (always).		0-15		4			PACCH D/L (**)
THRESH_priority_search		A threshold for the serving cell that controls measurement of inter-RAT cells or frequencies of lower priority when the priority-based cell reselection algorithm is used, 0 = -98 dBm, 1 = -95 dBm, 2 = -92 dBm, …, 13 = -59 dBm, 14 = -56 dBm, 15 =  (always).		0-15		4			PACCH D/L (**)
GERAN_PRIORITY		Priority of GSM cells, 0 = lowest priority, …, 7 = highest priority.		0-7		3			PACCH D/L (**)
UTRAN_QRXLEVMIN		Minimum required RX level for cells on the target UTRAN frequency (dBm), 0 = -119 dBm, 1 = -117 dBm, 2 = -115 dBm, …, 30 = -59 dBm, 31 = -57 dBm. Default value = -119 dBm.		0-31		5			PACCH D/L (**)
THRESH_UTRAN_high, THRESH_UTRAN_low		Reselection thresholds towards UTRAN FDD or TDD cells, 0 = 0 dB, 1 = 2 dB, 2 = 4 dB, 3 = 6 dB, …, 30 = 60 dB, 31 = 62 dB. Default value of THRESH_UTRAN_low = value of THRESH_UTRAN_high.		0-31		5			PACCH D/L (**)
UTRAN_PRIORITY		Priority of a UTRAN frequency layer, 0 = lowest priority, …, 7 = highest priority.		0-7		3			PACCH D/L (**)
E-UTRAN_QRXLEVMIN		Minimum required RX level for cells on the target E-UTRAN frequency (dBm), 0 = -140 dBm, 1 = -138 dBm, 2 = -136 dBm, …, 30 = -80 dBm, 31 = -78 dBm. Default value = -140 dBm.		0-31		5			PACCH D/L (**)
THRESH_E-UTRAN_high, THRESH_E-UTRAN_low		Reselection thresholds towards E-UTRAN FDD or TDD cells, 0 = 0 dB, 1 = 2 dB, 2 = 4 dB, 3 = 6 dB, …, 30 = 60 dB, 31 = 62 dB. Default value of THRESH_E-UTRAN_low = value of THRESH_E‑UTRAN_high.		0-31		5			PACCH D/L (**)
E-UTRAN_PRIORITY		Priority of a E-UTRAN frequency layer, 0 = lowest priority, …, 7 = highest priority.		0-7		3			PACCH D/L (**)
H_PRIO		Hysteresis used in the priority reselection algorithm, 0 =  (rule disabled), 1 = 5 dB, 2 = 4 dB, 3 = 3 dB.		0-3		2			PACCH D/L (**)
T_reselection		Time hysteresis in the reselection algorithm, 0 = 5 sec, 1 = 10 sec, 2 = 15 sec, 3 = 20 sec. Default value = 0 (5 sec)		0-3		2			PACCH D/L (**)
E-UTRAN_REP_QUANT		Indicates the reporting quantity for E-UTRAN cells, 0 = RSRP, 1 = RSRQ		0/1		1			PACCH D/L (**)
E-UTRAN_FDD_REPORTING_THRESHOLD_2		Reporting threshold for the parameter (RSRP or RSRQ) that is not reported according to E-UTRAN_REP_QUANT. Default value = 0 (disabled)		0-63		6			PACCH D/L (**)
E‑UTRAN_TDD_REPORTING_THRESHOLD_2		Reporting threshold for the parameter (RSRP or RSRQ) that is not reported according to E-UTRAN_REP_QUANT. Default value = 0 (disabled)		0-63		6			PACCH D/L (**)
E‑UTRAN_FDD_MEASUREMENT_REPORT_OFFSET		Parameter used in the calculation of the value of the quantity (RSRP or RSRQ) that is reported according to E-UTRAN_REP_QUANT, when 3-bit reporting is used. For RSRP the mapping is as follows: 0 = -140 dBm, 1 = -139 dBm, 2 = -138 dBm, …, 62 = -78 dBm, 63 = -77 dBm. For RSRQ the mapping is as follows: 0 = -19.5 dB, 1 = -19 dB, 2 = -18.5 dB, …, 31 = -4 dB, 32 = -3.5 dB, 33 = -3 dB. Default value = 0.		0-63		6			PACCH D/L (**)
E‑UTRAN_TDD_MEASUREMENT_REPORT_OFFSET		Parameter used in the calculation of the value of the quantity (RSRP or RSRQ) that is reported according to E-UTRAN_REP_QUANT, when 3-bit reporting is used. For RSRP the mapping is as follows: 0 = -140 dBm, 1 = -139 dBm, 2 = -138 dBm, …, 62 = -78 dBm, 63 = -77 dBm. For RSRQ the mapping is as follows: 0 = -19.5 dB, 1 = -19 dB, 2 = -18.5 dB, …, 31 = -4 dB, 32 = -3.5 dB, 33 = -3 dB. Default value = 0.		0-63		6			PACCH D/L (**)
REPORTING_GRANULARITY		Signals whether fine or coarse granularity is used in 3-bit reporting. For RSRP: 0 = 2 dB step size, 1 = 3 dB step size; for RSRQ: 0 = 1 dB step size, 1 = 2 dB step size). Default value = 0.		0/1		1		PACCH D/L (**)
Qsearch_P_E-UTRAN	Search for E-UTRAN cells if signal level below threshold (0-7): – 98, – 94, … , – 74 dBm,  (always) or above threshold (8-15): – 78, – 74, … , – 54 dBm,  (never). Default value =  (never).		0-15		4		PACCH D/L (**)
Measurement_Control_E-UTRAN	Frequency-specific search enabled 0 = never search 1 = use Qsearch_P_E-UTRAN		0/1		1		PACCH D/L
Measurement_Control_UTRAN	Frequency-specific search enabled 0 = never search 1 = use Qsearch_P		0/1		1		PACCH D/L
E-UTRAN_Qmin	Minimum required quality for cells on the target E-UTRAN frequency (dB), 0= -34dB, 1= -32dB, 2= -30dB, …, 14= -6dB, 15= -4dB. Default value= -34dB.		0-15		4		PACCH D/L
E-UTRAN_RSRPmin	Minimum required RX level for cells on the target E-UTRAN frequency (dBm), 0 = -140 dBm, 1 = -138 dBm, 2 = -136 dBm, …, 30 = -80 dBm, 31 = -78 dBm. Default value = -140 dBm.		0-31		5		PACCH D/L
E-UTRAN_QQUALMIN	Minimum required quality for cells on the target E-UTRAN frequency (dB), 0= -34dB, 1= -32dB, 2= -30dB, …, 14= -6dB, 15= -4dB. Default value= -34dB.		0-15		4		PACCH D/L
THRESH_E-UTRAN_high_Q, THRESH_E-UTRAN_low_Q	Reselection thresholds towards E-UTRAN FDD or TDD cells, 0 = 0 dB, 1 = 1 dB, 2 = 2 dB, 3 = 3 dB, …, 30 = 30 dB, 31 = 31 dB. Default value of THRESH_E-UTRAN_low_Q = value of THRESH_E‑UTRAN_high_Q.		0-31		5		PACCH D/L
UTRAN_CSG_FDD_REPORTING_THRESHOLD	Reporting threshold for the reported value (Ec/No) for UTRAN FDD CSG cells, 0, 6, … , 36,  (never). Default value = same as the value of FDD_REPORTING_THRESHOLD if signalled and if FDD_REP_QUANT = 1; otherwise 4 (-12.5 dB ≤ CPICH Ec/Io < -12 dB).		0-7		3		PACCH D/L (**)
UTRAN_CSG_FDD_REPORTING_THRESHOLD_2	Reporting threshold for the non-reported value (RSCP) for UTRAN FDD CSG cells, Default value = same as the value of FDD_REPORTING_THRESHOLD_2 if signalled and if FDD_REP_QUANT = 1; otherwise 6 (‑110 dBm ≤ CPICH RSCP < ‑109 dBm).		0-63		6		PACCH D/L (**)
UTRAN_CSG_TDD_REPORTING_THRESHOLD	Reporting threshold for the reported value (RSCP) for UTRAN TDD CSG cells, 0, 6, … , 36,  (never). Default value = TDD_REPORTING_THRESHOLD if signalled; otherwise 0.		0-7		3		PACCH D/L (**)
E-UTRAN_CSG_FDD_REPORTING_THRESHOLD	Reporting threshold for the reported value (RSRQ) for E-UTRAN FDD CSG cells, 0, 6, … , 36,  (never). Default value = same as the value of E-UTRAN_FDD_REPORTING_THRESHOLD if signalled and if E-UTRAN_REP_QUANT = 1; otherwise 3 (‑11.0 dB ≤ RSRQ < ‑10.5 dB) .		0-7		3		PACCH D/L (**)
E-UTRAN_CSG_FDD_REPORTING_THRESHOLD_2	Reporting threshold for the non-reported value (RSRP) for E-UTRAN FDD CSG cells. Default value = same as the value of E-UTRAN_FDD_REPORTING_THRESHOLD_2 if signalled and if E-UTRAN_REP_QUANT = 1; otherwise 11 (‑120 dBm ≤ RSRP < ‑118 dBm).		0-63		6		PACCH D/L (**)
E-UTRAN_CSG_TDD_REPORTING_THRESHOLD	Reporting threshold for the reported value (RSRQ) for E-UTRAN TDD CSG cells, 0, 6, … , 36,  (never). Default value = same as the value of E-UTRAN_TDD_REPORTING_THRESHOLD if signalled and if E-UTRAN_REP_QUANT = 1; otherwise 3 (‑11.0 dB ≤ RSRQ < ‑10.5 dB).		0-7		3		PACCH D/L (**)
E-UTRAN_CSG_TDD_REPORTING_THRESHOLD_2	Reporting threshold for the non-reported value (RSRP) for E-UTRAN TDD CSG cells, Default value = same as the value of E-UTRAN_TDD_REPORTING_THRESHOLD_2 if signalled and if E-UTRAN_REP_QUANT = 1; otherwise 11 (‑120 dBm ≤ RSRP < ‑118 dBm).		0-63		6		PACCH D/L (**)

NOTE: (**) These parameters occur also on BCCH if PBCCH does not exist.

NOTE 1: If PBCCH does not exist, the MS shall perform cell re-selection according to the idle mode procedures defined in clause 6 (i.e. use parameter Qsearch_I). In case parameter Qsearch_P is broadcast on BCCH it shall be used according to clause 10 only if GPRS cell re-selection parameters for one or more cells are provided to the MS in a Packet Cell Change Order or Packet Measurement Order message.

NOTE 2: In case an optional parameter is not included in a point-to-point signalling message, the default value of that parameter shall replace any previously broadcast value, where applicable.

Table 3a: Conversion from idle mode to GPRS cell re-selection parameters

GPRS Parameter name	Conversion from idle mode parameters
GPRS_RXLEV_ACCESS_MIN	RXLEV_ACCESS_MIN
GPRS_MS_TXPWR_MAX_CCH	MS_TXPWR_MAX_CCH
C31	0
GPRS_RESELECT_OFFSET(n)	CELL_RESELECT_OFFSET(n) – CELL_RESELECT_OFFSET(s)
GPRS_TEMPORARY_OFFSET	TEMPORARY OFFSET
GPRS_PENALTY_TIME	PENALTY_TIME
PRIORITY_CLASS	0
C31_HYST	0
C32_QUAL	0
GPRS_CELL_RESELECT_HYSTERESIS	CELL_RESELECT_HYSTERESIS
RA_RESELECT_HYSTERESIS	CELL_RESELECT_HYSTERESIS
XXX_GPRS_Qoffset	XXX_Qoffset
CELL_BAR_ACCESS_2	CELL_BAR_ACCESS
EXC_ACC	cell exclusive access support capability

NOTE: If PENALTY_TIME = 11111 for a cell, the sign of CELL_RESELECT_OFFSET shall be changed and TEMPORARY OFFSET set to 0 for that cell.

Table 3b: Parameters affecting cell priority for cell selection and re-selection

CELL_BAR ACCESS_2	Cell selection priority	Status for cell reselection
0	Normal	Normal
1	Barred	Barred

NOTE 1: A low priority cell is only selected if there are no suitable cells of normal priority (see 3GPP TS 43.022).

The conversion of the PENALTY_TIME into the GPRS_PENALTY_TIME shall be done by use of the timer values (e.g. PENALTY_TIME = 40s -> GPRS_PENALTY_TIME 2 = 40s). Similarly, dB values shall be used for GPRS_RESELECT_OFFSET(n) conversion.