8.1 General Measurement Requirements in CELL_DCH State

25.1333GPPRelease 17Requirements for support of radio resource management (FDD)TS

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

8.1.1 Introduction

This section contains requirements on the UE regarding measurement reporting in CELL_DCH state. The requirements are split in FDD intra frequency, FDD inter frequency, TDD, GSM and E-UTRAN measurements. These measurements may be used by the UTRAN, e.g. for handover decisions. The measurements are defined in TS 25.215, the measurement model is defined in TS 25.302 and measurement accuracies are specified in section 9. Control of measurement reporting is specified in TS 25.331 and parallel measurements are specified in section 8.2. Compressed mode is specified in TS 25.215.

If UE indicates support for increased UE carrier monitoring UTRA or increased carrier monitoring E-UTRA, the measurement performance for different carriers may be configured by higher layers to be either normal or reduced. A measurement scaling factor [16] defining the relaxation to be applied to the requirements for carriers measured with reduced measurement performance is signalled by higher layers and has the possible settings shown in table 8.0a.

Table 8.0a: Measurement scaling factor Configurations supported by the UE

	Measurement scaling factor information element settting	K_n	K_r
SF_UTRA_CF1	8	8/7	8
SF_UTRA_CF2	16	16/15	16

If no reduced performance group carrier is configured, the UE shall consider all carriers to have normal performance. If no measurement scaling factor is configured, a UE indicating support for increased carrier monitoring UTRA or increased carrier monitoring E-UTRA shall monitor at least the number of carriers specified in section 8.1.2.1 and 8.4.2.1 and is not required to monitor the increased number of carriers specified in section 8.1.2.1a and 8.4.2.1a.

The minimum performance requirements for a UE which indicates support for Increased UE carrier monitoring UTRA [16, 31] are calculated as defined in section 8.1.2.3 provided that N_freq,n≤2 or if all FDD interfrequency carriers are indicated to have normal performance. The minimum performance requirements for a UE which indicates support for Increased UE carrier monitoring E-UTRA [16, 31] are calculated as defined in section 8.1.2.6 provided that N_{freq,E-UTRA,n}≤4 for a UE capable of either FDD E-UTRA carriers or TDD E-UTRA carrier monitoring or N_{freq,E-UTRA,n}≤8 for a UE capable of both FDD and TDD E-UTRA carrier monitoring provided N_{freq,E-UTRA,n,FDD}≤4 and N_{freq,E-UTRA,n,TDD}≤4 or if all E-UTRA carriers are indicated to have normal performance.

Capabilities for number of carriers to monitor for UE which indicates support for Increased UE carrier monitoring UTRA or E-UTRA are specified in section 8.1.2.1a.

8.1.2 Requirements

8.1.2.1 UE Measurement Capability

In CELL_DCH state, when a single uplink carrier frequency is configured, the UE shall be able to monitor up to

– 32 intra frequency FDD cells (including active set); and

– 32 inter frequency cells, including

– FDD cells distributed on up to 2 additional FDD carriers; and

– Depending on UE Capability, TDD cells, distributed on up to 3 TDD carriers; and

– Depending on UE capability, 32 GSM cells distributed on up to 32 GSM carriers; and

– Depending on UE capability, 4 E-UTRA FDD cells per E-UTRA FDD carrier for up to 4 E-UTRA FDD carriers; and

– Depending on UE capability, 4 E-UTRA TDD cells per E-UTRA TDD carrier for up to 4 E-UTRA TDD carriers; and

– Depending on UE capability, the UE shall be able to monitor up to 16 intra frequency cells during IPDL gaps.

In addition to the requirements defined above, a UE supporting E-UTRA measurements shall be capable of monitoring a minimum total of at least 8 carrier frequency layers, including the intra-frequency serving layer and comprising of any above defined combination of E-UTRA FDD, E-UTRA TDD, UTRA FDD, UTRA TDD and GSM layers (one GSM layer corresponds to 32 cells).

In CELL_DCH state, when dual uplink carrier frequencies are configured, the UE shall be able to monitor up to

– 32 intra frequency FDD cells (including active set) per intra frequency carrier, and

– 32 inter frequency cells, including

– FDD cells distributed on up to 2 additional FDD carriers and

– Depending on UE Capability, TDD cells, distributed on up to 3 TDD carriers and

– Depending on UE capability, 32 GSM cells distributed on up to 32 GSM carriers and

– Depending on UE capability, 4 E-UTRA FDD cells per E-UTRA FDD carrier for up to 4 E-UTRA FDD carriers and

– Depending on UE capability, 4 E-UTRA TDD cells per E-UTRA TDD carrier for distributed on up to 4 E-UTRA TDD carriers and

– Depending on UE capability, the UE shall be able to monitor up to 16 intra frequency cells during IPDL gaps.

In addition to the requirements defined above, a UE supporting E-UTRA measurements shall be capable of monitoring a minimum total of at least 9 carrier frequency layers, including the two intra-frequency carriers and comprising of any above defined combination of E-UTRA FDD, E-UTRA TDD, UTRA FDD, UTRA TDD and GSM layers (one GSM layer corresponds to 32 cells).

If the UE utilises compressed mode for inter-frequency and/or inter-RAT measurements, in order for the requirements in the following subsections to apply the UTRAN must:

– provide transmission gap pattern sequences with TGPL1 > 1, and

– ensure that with the activation of one or more transmission gap pattern sequences, no more than two frames contain a transmission gap within any window of three consecutive frames, and

– ensure that there is a minimum of 8 slots between the end of the first transmission gap and the beginning of the second transmission gap in case of two successive compressed frames.

Performance requirements for different types of transmission gap pattern sequences and different number of cells is defined in the following sections.

The requirements in section 9 are applicable for a UE performing measurements according to this section.

The received CPICH E_c/I_o is defined as

and the received SCH E_c/I_o is defined as

8.1.2.1a UE Measurement Capability (Increased UE carrier monitoring)

UE which indicates support for Increased UE carrier monitoring UTRA according to capabilities in [16,31] shall additionally be capable of monitoring at least

80 inter-frequency cells, including

– 5 FDD UTRA inter-frequency carriers with up to 32 cells per carrier.

UE which indicates support for increased UE carrier monitoring E-UTRA according to capabilities in [16,31] shall be capable of monitoring at least

– Depending on UE capability, 8 FDD E-UTRA carriers, and

– Depending on UE capability, 8 TDD E-UTRA carriers.

In addition to the requirements defined above, a UE supporting E-UTRA measurements and supporting Increased UE carrier monitoring UTRA or increased UE carrier monitoring E-UTRA according to capabilities in [16,31] shall be capable of monitoring a total of at least 13 carrier frequency layers, which includes serving layer, comprising of any above defined combination of of E-UTRA FDD, E-UTRA TDD, UTRA FDD, UTRA TDD and GSM layers (one GSM layer corresponds to 32 cells).

8.1.2.2 FDD intra frequency measurements

During the CELL_DCH state the UE shall continuously measure identified intra frequency cells and search for new intra frequency cells in the monitoring set. In case the network requests the UE to report detected set cells, the UE shall also search for intra frequency cells outside the monitored and active set. Cells, which are neither included in the active set nor in the monitored set, and are identified by the UE belong to the detected set according to TS 25.331. If compressed mode pattern sequences are activated, intra frequency measurements can be performed between the transmission gaps simultaneously for data reception from the active set cell/s. If DL_DRX_Active=1, and the UE is performing DRX, intra frequency measurements can be performed when the receiver is active, simultaneously to data reception from the active set cell/s.

The performance of intra frequency measurements when IPDL is active has not been studied.

8.1.2.2.1 Identification of a new cell

If DL_DRX_Active = 0, the UE shall be able to identify and decode the SFN of a new detectable cell belonging to the monitored set within

If DL_DRX_Active = 1, the UE shall be able to identify and decode the SFN of a new detectable cell belonging to the monitored set according to the figures in Table 8.0b.

Table 8.0b: Cell identification times for intra-frequency measurements when DL DRX is active

DRX cycle length (subframes)	T_{identify intra}(s)
DRX-cycle length <10	0.8
10 ≤ DRX-cycle length ≤ 80	1.5 Note 1
Note1: The requirements for DRX cycle lengths of greater than 20 subframes are only applicable for UEs that support DRX cycle 2 according to its capability in IE “Enhanced Downlink DRX” defined in section 10.3.3.25 of TS 25.331 [16].

A cell shall be considered detectable when

– CPICH Ec/Io > -20 dB if DL_DRX_Active = 0, or CPICH Ec/Io ≥-17dB if DL_DRX_Active=1,

– SCH_Ec/Io > -20 dB if DL_DRX_Active = 0, or SCH Ec/Io ≥-17dB if DL_DRX_Active=1, for at least one channel tap and SCH_Ec/Ior is equally divided between primary synchronisation code and secondary synchronisation code. When L3 filtering is used an additional delay can be expected.

In case of conflict when a compressed gap sequence is activated the UE may choose to prioritise the SFN decoding

The UE shall be able to identify a new detectable cell not belonging to the monitored set within

when CPICH Ec/Io > -20 dB, SCH_Ec/Io > -17 dB and SCH_Ec/Ior is equally divided between primary synchronisation code and secondary synchronisation code. When L3 filtering is used an additional delay can be expected.

8.1.2.2.1.1 Identification of a new cell using IPDL gaps

When the UE is supporting IPDL measurements and when idle periods with a length of 1 slot are scheduled the UE physical layer shall be capable to identify a new cell and report SFN-SFN observed time difference type 2 measurement within

T_{identify,IPDL}=Max{T_{Measerement_Period Intra},T_IPDL} ms

where

T_{Measurement_Period Intra}= The measurement period for Intra frequency CPICH measurements defined in Section 8.1.2.2.2.

and

T_IPDL depends on the Search Window Size given in UE positioning OTDOA neighbour cell info as given in Table 8.0

Table 8.0: T_IPDL

Search Window Size	T_IPDL
less than or equal to +/- 40 chips	Time over which 4 consecutive IPDL gaps occur
+/- 80 chips	Time over which 8 consecutive IPDL gaps occur

8.1.2.2.2 UE CPICH measurement capability

In the CELL_DCH state the measurement period for intra frequency measurements is 200 ms. When no transmission gap pattern sequence is activated and DL_DRX_Active=0, the UE shall be capable of performing CPICH measurements for 8 identified-intra-frequency cells of the monitored set and/or the active set, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 200 ms. When one or more transmission gap pattern sequences are activated, and/or DL_DRX_Active=1, the UE shall be capable of performing CPICH measurements for at least Y_{measurement intra}cells , where Y_{measurement intra}is defined in the following equation. The measurement accuracy for all measured cells shall be as specified in the sub-clause 9.1.1 and 9.1.2. If the UE has identified more than Y_{measurement intra}cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

cells

where

X_{basic measurement FDD}= 8 (cells)

T_{Measurement_Period Intra}= 200 ms. The measurement period for Intra frequency CPICH measurements.

T_Intra : This is the minimum time that is available for intra frequency measurements, during the measurement period with an arbitrarily chosen timing. If DL_DRX_Active=1, and the UE is performing DRX, intra frequency measurements are assumed only to be performed when the receiver is guaranteed to be active, and simultaneously to data reception from the active set cell/s.

T_{basic_identify_FDD, intra} = 800 ms. This is the time period used in the intra frequency equation where the maximum allowed time for the UE to identify a new FDD cell is defined.

The UE shall furthermore be capable of performing CPICH measurements for at least 1 detected intra-frequency cell, in the detected set, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 10 s. The measurement accuracy for all measured cells shall be as specified in the sub-clause 9.1.1 and 9.1.2.

8.1.2.2.2.1 Capabilities for measurements during IPDL gaps

When idle periods with a length of 1 slot are scheduled, the UE physical layer shall be capable of reporting SFN-SFN observed time difference type 2 measurements to higher layers with measurement accuracy as specified in sub-clause 9.1.8.2.2 with measurement period given by

where

T_{Measurement_Period Intra}= The measurement period for Intra frequency CPICH measurements defined in Section 8.1.2.2.2.

T_{4 IPDLs} = Time period over which 4 consecutive idle periods occur.

8.1.2.2.3 Periodic Reporting

Reported measurements contained in periodically triggered measurement reports shall meet the requirements in section 9.

8.1.2.2.4 Event-triggered Periodic Reporting

Reported measurements contained in event triggered periodic measurement reports shall meet the requirements in section 9.

The first report in event triggered periodic measurement reporting shall meet the requirements specified in section 8.1.2.2.3 Event Triggered Reporting.

8.1.2.2.5 Event Triggered Reporting

Reported measurements contained in event triggered measurement reports shall meet the requirements in section 9.

The UE shall not send event triggered measurement reports, as long as the reporting criteria are not fulfilled.

The measurement reporting delay is defined as the time between any event that will trigger a measurement report until the UE starts to transmit over the Uu interface. This requirement assumes that the measurement report is not delayed by other RRC signalling on the DCCH. This measurement reporting delay excludes a delay uncertainty resulted when inserting the measurement report to the TTI of the uplink DCCH. The delay uncertainty is twice the TTI of the uplink DCCH.

The event triggered measurement reporting delay, on cells belonging to monitored set, measured without L3 filtering, shall be less than the above defined T_{identify intra} defined in Section 8.1.2.2.1

If a cell, belonging to monitored set, which the UE has identified and measured at least once over the measurement period, becomes undetectable for a period ≤ 5 seconds and then the cell becomes detectable again and triggers an event, the measurement reporting delay shall be less than T_{Measurement_Period Intra}ms provided the timing to that cell has not changed more than +/-32 chips, the UE CPICH measurement capabilities of section 8.1.2.2.2 are valid and L3 filtering has not been used. When L3 filtering is used an additional delay can be expected.

If a cell belonging to monitored set has been detectable at least for the time period T_{identify_intra} and then triggers the measurement report as per TS 25.331, section 14 [16], the event triggered measurement reporting delay shall be less than T_{Measurement_Period Intra} when the L3 filter has not been used and the UE CPICH measurement capabilities of Section 8.1.2.2.2 are valid.

The event triggered measurement reporting delay on cells not belonging to monitored set, measured without L3 filtering, shall be less than the above defined T _{identify detected set} defined in Section 8.1.2.2.1.

8.1.2.3 FDD inter frequency measurements

In the CELL_DCH state when a transmission gap pattern sequence with the "FDD measurements" purpose is provided by the network the UE shall continuously measure identified inter frequency cells and search for new inter frequency cells indicated in the measurement control information.

In order for the requirements in the following subsections to apply the UTRAN must provide a transmission gap pattern sequence with measurement purpose FDD measurement using the following combinations for TGL1, TGL2, TGD and Max TGPL:

Table 8.1

TGL1 [slots]	TGL2 [slots]	TGD [slots]	Max TGPL [frames]
7	–	undefined	18
14	–	undefined	36
10	–	undefined	24
7	7	15…269	18 + ceil(TGD/15)
14	14	45…269	36 + ceil(TGD/15)

8.1.2.3.1 Identification of a new cell

The UE shall be able to identify a new detectable cell belonging to the monitored set within

(normal performance) and

(reduced performance)

and UE that supports inter frequency detected set CPICH measurements shall also be able to identify a new detectable cell belonging to the detected set within T_{identify inter detected set} = 30·K_n·N_freq,ns (normal performance) and 30·K_r·N_freq,rs (reduced performance).

If the UE does not need compressed mode to measure cells on a frequency adjacent to the intra-frequency (irrespective of the number of serving cells configured in the UE) according to its measurement capability in the IE “Adjacent Frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16], and if the Adjacent Frequency Index [16] is configured, the UE shall be able to identify a new detectable cell on the indicated adjacent frequency belonging to the monitored set within T_{identify,inter,optional} and UE that supports inter frequency detected set CPICH measurements shall be able to identify a new detectable cell on the indicated adjacent frequency within T_{identify,inter detected set} = 30s.

If the UE does not need compressed mode to measure cells on a frequency in a band jointly supported with the band of intra-frequency according to its measurement capability in the IE “Inter-band Frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16], the UE shall be able to identify a new detectable cell on that frequency belonging to the monitored set within T_{identify,inter,optional} and UE that supports inter frequency detected set CPICH measurements shall be able to identify a new detectable cell on that frequency within T_{identify,inter detected set} = 30s.

If the UE is able to search enhanced inter-frequency measurements without compressed mode according to its measurement capability in the IE “Enhanced inter-frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16],

– when a single uplink frequency is configured, the UE shall be able to identify a new detectable cell each of the 2 indicated frequencies belonging to the monitored set within T_{identify,inter,optional}; or

– when dual uplink frequencies are configured, the UE shall be able to identify a new detectable cell on the indicated frequency belong to the monitored set within T_{identify,inter,optional,}

where the indicated frequenc(ies) together with intra-frequenc(ies) shall be within UE RF capability as per Band Combination and Supported Carrier Combination List in [16] and UE that supports inter frequency detected set CPICH measurements shall be able to identify a new detectable cell on the indicated frequenc(ies) within T_{identify,inter detected set} = 30s.

If DL_DRX_Active = 0,

If DL_DRX_Active = 1, the UE shall be able to identify and decode the SFN of a new detectable cell belonging to the monitored set according to the figures in Table 8.1a.

Table 8.1a: Cell identification times, inter-frequency measurements, Enhanced IF measurements, No CM, DL DRX active

DRX cycle length (subframes)	T_{identify, inter, optional}(s)
DRX-cycle length <10	0.8
10 ≤ DRX-cycle length ≤ 20	1.5 Note 1
20 < DRX-cycle length ≤ 80	3.0 Note 1
Note1: The requirements for DRX cycle lengths of greater than 20 subframes are only applicable for UEs that support DRX cycle 2 according to its capability in IE “Enhanced Downlink DRX” defined in section 10.3.3.25 of TS 25.331 [16].

If the UE does not need compressed mode to measure cells on configured carrier frequencies corresponding to secondary serving HS-DSCH cells according to its measurement capability in the IE, “Inter-frequency measurements on configured carriers without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16], the UE shall be able to identify a new detectable cell on the configured carrier frequency belonging to the monitored set within T_{identify,inter,optional}where:

If DL_DRX_Active = 0, T_{identify, inter, optional} = 2.2*K_n*N_freq,n seconds (normal performance) and 2.2*K_r*N_freq,r.(reduced performance).

If DL_DRX_Active = 1, the value of T_{identify, inter, optional}is according to the figures in Table 8.1b.

Table 8.1b: Cell identification times, inter-frequency measurements, IF measurements on configured carriers, No CM, DL DRX active

DRX cycle length (subframes)	T_{identify, inter, optional}(s) (normal performance)	T_{identify, inter, optional}(s) (reduced performance)
DRX-cycle length <10	2.2K_n N_freq,n	2.2K_r N_freq,r
10 ≤ DRX-cycle length ≤ 20	4.4K_n N_freq,n Note 1	4.4K_r N_freq,r
20 < DRX-cycle length ≤ 80	6.6K_n N_freq,n Note 1	6.6K_r N_freq,r
Note1: The requirements for DRX cycle lengths of greater than 20 subframes are only applicable for UEs that support DRX cycle 2 according to its capability in IE “Enhanced Downlink DRX” defined in section 10.3.3.25 of TS 25.331 [16].

A cell shall be considered detectable when

– CPICH Ec/Io > -20 dB,

– SCH_Ec/Io > -17 dB for at least one channel tap and SCH_Ec/Ior is equally divided between primary synchronisation code and secondary synchronisation code. When L3 filtering is used an additional delay can be expected.

8.1.2.3.2 UE CPICH measurement capability

When transmission gaps are scheduled for FDD inter frequency measurements the UE physical layer shall be capable of reporting measurements to higher layers with measurement period given by

(normal performance) and

(reduced performance)

If the UE does not need compressed mode to perform inter-frequency measurements, the measurement period for inter frequency measurements is 480 ms.

The UE shall be capable of performing CPICH measurements for X_{basic measurement FDD inter}inter-frequency cells per FDD frequency of the monitored set or the virtual active set, or the detected set for UE that supports inter frequency detected set meaurements, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of T_{Measurement_Inter.} If the UE has identified more than Xbasic measurement FDD inter cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

X_{basic measurement FDDinter}= 6

T_{Measurement_Period Inter}= 480 ms. The period used for calculating the measurement period T_{measurement_inter} for inter frequency CPICH measurements.

T_Inter::This is the minimum time that is available for inter frequency measurements , during the period T_{Measurement_Period inter} with an arbitrarily chosen timing. The minimum time per transmission gap is calculated by using the actual idle length within the transmission gap as given in the table 11 of Annex B in TS 25.212 and by assuming 2*0.5 ms for implementation margin and after that taking only full slots into account in the calculation.

T_{basic_identify_FDD,inter} = 300 ms. This is the time period used in the inter frequency equation where the maximum allowed time for the UE to identify a new FDD cell is defined.

T_{basic_measurement_FDD inter} = 50 ms. This is the time period used in the equation for defining the measurement period for inter frequency CPICH measurements.

N_Freq: Number of FDD frequencies indicated in the inter frequency measurement control information.

N_freq,n: Number of interfrequency carriers to be monitored with normal performance

N_freq,r: Number of interfrequency carriers to be monitored with reduced performance

If N_freq,r is not equal to zero then K_n and K_r are as shown in table 8.0a. Otherwise K_n=1 and all interfrequency layers have normal performance.

The minimum performance requirements for a UE which does not indicate support for Increased UE carrier monitoring UTRA [16,31] are calculated assuming all UTRA carriers required to be monitored for such UE, are having normal performance and are in normal performance group, i.e. N_freq,n = N_Freq and N_freq,r =0.

For UE that supports inter frequency detected set CPICH measurements, out of the X_{basic measurement FDD inter}inter-frequency cells per FDD frequency for which the UE is capable of performing CPICH measurements, the UE shall be capable of measuring the CPICH of at least one detected set cell.

– when DL_DRX_Active=0, the UE shall be capable of performing CPICH measurements for 8 cells on the indicated adjacent frequency, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 200ms. For UE that supports inter frequency detected set CPICH measurements, out of 8 cells on the indicated adjacent frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than 8 cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased; or

– when DL_DRX_Active=1, the UE shall be capable of performing CPICH measurements for at least Y_{measurement intra} cells on the indicated adjacent frequency, where Y_{measurement intra} is defined in sub-clause 8.1.2.2.2. If the UE has identified more than Y_{measurement intra} cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased. For UE that supports inter frequency detected set CPICH measurements, out of Ymeasurement intra cells on the indicated adjacent frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than Ymeasurement intra cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

– when DL_DRX_Active=0, the UE shall be capable of performing CPICH measurements for 8 cells on that frequency, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 200ms. For UE that supports inter frequency detected set CPICH measurements, out of 8 cells on that frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than 8 cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased; or

– when DL_DRX_Active=1, the UE shall be capable of performing CPICH measurements for at least Y_{measurement intra}cells on that frequency. If the UE has identified more than Y_{measurement intra}cells, where Y_{measurement intra}is defined in sub-clause 8.1.2.2.2, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased. For UE that supports inter frequency detected set CPICH measurements, out of Ymeasurement intra cells on that frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than Ymeasurement intra cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

– when a single uplink frequency is configured, the UE shall be capable of performing CPICH measurements for 8 cells each on 2 indicated frequencies, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 200ms. For UE that supports inter frequency detected set CPICH measurements, out of 8 cells each on 2 indicated frequencies, the UE shall be capable of measuring the CPICH of at least one detected set cell each on 2 indicated frequencies. If the UE has identified more than 8 cells on each frequency, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased; or

– when dual uplink frequencies are configured, the UE shall be capable of performing CPICH measurements for 8 cells on the indicated frequency, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 200ms. For UE that supports inter frequency detected set CPICH measurements, out of 8 cells on the indicated frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than 8 cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

– when a single uplink frequency is configured, the UE shall be capable of performing CPICH measurements for at least Y_{measurement intra}cells each on 2 indicated frequencies, where Y_{measurement intra}is defined in sub-clause 8.1.2.2.2. If the UE has identified more than Y_{measurement intra}cells on the indicated frequency, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased for that frequency. For UE that supports inter frequency detected set CPICH measurements, out of Ymeasurement intra cells each on 2 indicated frequencies, the UE shall be capable of measuring the CPICH of at least one detected set cell each on 2 indicated frequencies. If the UE has identified more than Ymeasurement intra cells on each frequency, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased; or

– when dual uplink frequencies are configured, the UE shall be capable of performing CPICH measurements for at least Y_{measurement intra}cells on the indicated frequency, where Y_{measurement intra}is defined in sub-clause 8.1.2.2.2. If the UE has identified more than Y_{measurement intra}cells on the indicated frequency, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased for that frequency. For UE that supports inter frequency detected set CPICH measurements, out of Ymeasurement intra cells on the indicated frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than Ymeasurement intra cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

– when DL_DRX_Active=0, the UE shall be capable of performing CPICH measurements for 6 cells per configured carrier frequency belonging to the monitored set or the virtual active set, or the detected set for UE that supports inter frequency detected set measurements on the configured carrier frequency, and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of 1000* K_n*N_Freq,n ms (normal performance) or 1000* K_r*N_Freq,r ms. For UE that supports inter frequency detected set CPICH measurements, out of 6 cells per configured carrier frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than 6 cells, the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased; or

– when DL_DRX_Active=1, the UE shall be capable of performing CPICH measurements for at least 6cells per configured carrier frequency belonging to the monitored set or the virtual active set, or the detected set for UE that supports inter frequency detected set measurements on the configured carrier frequency, and the UE physical layer shall be capable of reporting measurements to high layers with the measurement period according to Table 8.1c.. For UE that supports inter frequency detected set CPICH measurements, out of 6 cells per configured carrier frequency, the UE shall be capable of measuring the CPICH of at least one detected set cell. If the UE has identified more than 6cells then the UE shall perform measurements of all identified cells but the reporting rate of CPICH measurements of cells from UE physical layer to higher layers may be decreased.

Table 8.1c: Measurement period, DL DRX active, IF measurements on configured carriers, No CM, DL DRX active

DRX cycle length (subframes)	Measurement Period (s), Normal performance	Measurement Period (s), Reduced performance
DRX-cycle length <10	1.0K_nN_freq,n	1.0K_rN_freq,r
10 ≤ DRX-cycle length ≤ 20	2.0K_n N_freq,n Note 1	2.0K_rN_freq,r
20 < DRX-cycle length ≤ 80	3.0K_n N_freq,n Note 1	3.0K_rN_freq,r
Note1: The requirements for DRX cycle lengths of greater than 20 subframes are only applicable for UEs that support DRX cycle 2 according to its capability in IE “Enhanced Downlink DRX” defined in section 10.3.3.25 of TS 25.331 [16].

The measurement accuracy for all measured cells shall be as inter frequency measurement accuracy specified in the sub-clause 9.1.1 and 9.1.2.

8.1.2.3.3 Periodic Reporting

Reported measurements in periodically triggered measurement reports shall meet the requirements in section 9.

8.1.2.3.4 Event Triggered Reporting

Reported measurements in event triggered measurement reports shall meet the requirements in section 9.

The UE shall not send any event triggered measurement reports, as long as the reporting criteria is not fulfilled.

The measurement reporting delay is defined as the time between any event that will trigger a measurement report until the UE starts to transmit the measurement report over the Uu interface. This requirement assumes that the measurement report is not delayed by other RRC signalling on the DCCH. This measurement reporting delay excludes a delay uncertainty resulted when inserting the measurement report to the TTI of the uplink DCCH. The delay uncertainty is twice the TTI of the uplink DCCH.

The event triggered measurement reporting delay of a cell belonging to the monitored set, measured without L3 filtering shall be less than T _{identify inter} defined in Section 8.1.2.3.1When L3 filtering is used an additional delay can be expected.

The event triggered measurement reporting delay of a cell belonging to the detected set, measured without L3 filtering shall be less than T_{identify inter detected set} defined in Section 8.1.2.3.1_.When L3 filtering is used an additional delay can be expected.

If a cell belonging to a monitored set has been detectable at least for the time period T_{identify_inter} or a cell belonging to a detected set has been detectable at least for the time period T_{identify inter detected set} and then triggers the measurement report as per TS 25.331, section 14 [16], the event triggered measurement reporting delay shall be less than T_{Measurement_Period Inter} provided the timing to that cell has not changed more than +/-32 chips while transmission gap has not been available and the L3 filter has not been used.

If one of the following conditions is met,

1) if the UE does not need compressed mode to measure cells on a frequency adjacent to the intra-frequency (irrespective of the number of serving cells configured in the UE) according to its measurement capability in the IE “Adjacent Frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16], and if the Adjacent Frequency Index [16] is configured; or

2) if the UE does not need compressed mode to measure cells on a frequency in a band jointly supported with the band of intra-frequency according to its measurement capability in the IE “Inter-band Frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16]; or

3) if the UE is able to search enhanced inter-frequency measurements without compressed mode according to its measurement capability in the IE “Enhanced inter-frequency measurements without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16]; or

4) if the UE does not need compressed mode to measure cells on configured carrier frequencies corresponding to secondary serving HS-DSCH cells according to its measurement capability in the IE, “Inter-frequency measurements on configured carriers without compressed mode” defined in section 10.3.3.21 of TS 25.331 [16],,

the event triggered measurement reporting delay of a cell belonging to the monitored set, measured without L3 filtering shall be less than T _{identify,inter,optional} defined in Section 8.1.2.3.1.When L3 filtering is used an additional delay can be expected. If a cell has been detectable at least for the time period T_{identify,inter,optional} and then triggers the measurement report as per TS 25.331, section 14 [16], the event triggered measurement reporting delay shall be less than T_{Measurement_Period Intra}defined in Section 8.1.2.2.2 provided the timing to that cell has not changed more than +/-32 chips while transmission gap has not been available and the L3 filter has not been used.

8.1.2.4 TDD measurements

The requirements in this section shall apply to UE supporting FDD and TDD.

In the CELL_DCH state when a transmission gap pattern sequence with the "TDD measurements" purpose is provided by the network, the UE shall continuously measure identified inter frequency TDD cells and search for new inter frequency TDD cells indicated in the measurement control information.

In order for the requirements in the following subsections to apply, the Beacon timeslots of the inter-frequency TDD cells indicated in the measurement control information shall either be synchronised or non-overlapping in time such that the UE can measure an inter-frequency TDD cell at least once in every transmission gap pattern as given in [7] for the slot allocation case in use in this cell and by assuming 2*0.5 ms implementation margin per transmission gap.

UTRAN shall provide a transmission gap pattern sequence with measurement purpose TDD measurement using the combinations for TGL1, TGL2 and TGD in Table 8.2:

Table 8.2

TGL1 [slots]	TGL2 [slots]	TGD [slots]
10	–	undefined
10	10	41…269
14	7	37…269

8.1.2.4.1 Identification of a new cell

8.1.2.4.1.1 3,84 Mcps TDD Option

When transmission gaps are scheduled for inter-frequency TDD measurements, the UE shall be able to identify a new detectable inter-frequency TDD cell belonging to the monitored set within

If the UE does not need compressed mode to perform inter-frequency TDD measurements, the UE shall be able to identify a new detectable inter-frequency TDD cell belonging to the monitored set within 5000 ms.

When L3 filtering is used an additional delay can be expected.

An inter-frequency TDD cell shall be considered detectable when P-CCPCH Ec/Io ≥ -8 dB and SCH_Ec/Io ≥ -13 dB.

The received P-CCPCH_E_c/I_o is defined as

and the received SCH_E_c/I_o is defined as

8.1.2.4.1.2 1.28 Mcps TDD Option

When transmission gaps are scheduled for inter-frequency TDD measurements, the UE shall be able to identify a new detectable inter-frequency TDD cell belonging to the monitored set within

When L3 filtering is used an additional delay can be expected.

A cell shall be considered detectable when P-CCPCH Ec/Io > -8 dB and DwPCH_Ec/Io > -5 dB. When L3 filtering is used an additional delay can be expected.

The received P-CCPCH E_c/I_o is defined as

The received DwPTS E_c/I_o is defined as

8.1.2.4.2 P-CCPCH RSCP measurement period

When transmission gaps are scheduled for inter frequency TDD measurements the UE physical layer shall be capable of reporting measurements to higher layers with measurement accuracy as specified in sub-clause 9.1.11 and with a measurement period as given by

If the UE does not need compressed mode to perform inter-frequency TDD measurements, the measurement period for inter-frequency TDD measurements shall be 480 ms.

The UE shall be capable of performing P-CCPCH RSCP measurements for X_{basic measurement TDD inter} inter-frequency TDD cells per TDD frequency of the monitored set and the UE physical layer shall be capable of reporting measurements to higher layers with the measurement period of T_{measurement TDD inter}.

X_{basic measurement TDD inter} = 6 (cells)

T_{Measurement_Period TDD inter}= 480 ms. The time period used for calculating the measurement period T_{measurement_TDD inter} for inter frequency P-CCPCH RSCP measurements.

N_TDD _inter:This is the smallest resulting integer number of transmission gap patterns in a transmission gap pattern sequence assigned to UE by UTRAN for inter frequency TDD measurements during the time period T_{Measurement_Period TDD inter} with an arbitrarily chosen timing.

N_{basic_identify_TDD,inter} =80. This is the number of transmission gap patterns in a transmission gap pattern sequence for inter-frequency TDD measurements during the time period used in the inter frequency TDD equation where the maximum allowed time for the UE to identify a new inter frequency TDD cell is defined.

N_{basic_measurement_TDD inter} = 5. This is the number of transmission gap patterns in a transmission gap pattern sequence for inter-frequency TDD measurements during the time period T_{Measurement_Period TDD inter} with an arbitrarily chosen timing that is used in the inter-frequency TDD equation where the measurement period for inter-frequency P-CCPCH RSCP measurements is defined.

N_Freq: This is the number of TDD frequencies indicated in the inter frequency measurement control information.

8.1.2.4.3 Periodic Reporting

Reported measurements in periodically triggered measurement reports shall meet the requirements in section 9.

8.1.2.4.4 Event Triggered Reporting

Reported measurements in event triggered measurement reports shall meet the requirements in section 9.

The UE shall not send event triggered measurement reports, as long as the reporting criteria are not fulfilled.

The measurement reporting delay is defined as the time between any event that will trigger a measurement report, until the UE starts to transmit the measurement report over the Uu interface. This requirement assumes that the measurement report is not delayed by other RRC signalling on the DCCH.. This measurement reporting delay excludes a delay uncertainty resulting when inserting the measurement report to the TTI of the uplink DCCH. The delay uncertainty is twice the TTI of the uplink DCCH.

The event triggered measurement reporting delay, measured without L3 filtering shall be less than T_{identify TDD inter} defined in Section 8.1.2.4.1When L3 filtering is used an additional delay can be expected.

8.1.2.5 GSM measurements

The requirements in this section apply only to UE supporting FDD and GSM.

Measurements on GSM cells can be requested with BSIC verified or BSIC non-verified.

1) In CELL_DCH state when a transmission gap pattern sequence is provided by the UTRAN the UE shall continuously measure GSM cells and search for new GSM cells given in the monitored set.

2) If the UE does not need compressed mode to perform GSM measurements:

– the UE shall measure all GSM cells present in the monitored set

– the relevant requirements for GSM dedicated mode when a TCH channel is assigned in TS 45.008 shall apply. This is further detailed in the following sub-sections.

8.1.2.5.1 GSM carrier RSSI

1) For a UE requiring compressed mode

A UE supporting GSM measurements using compressed mode shall meet the minimum number of GSM RSSI carrier measurements specified in table 8.4. This measurement shall be based on a transmission gap pattern sequence with purpose "GSM carrier RSSI measurements"

In order for the requirements in this subsection to apply the UTRAN must provide a transmission gap pattern sequence with measurement purpose GSM carrier RSSI measurements using the following combinations for TGL1, TGL2 and TGD:

Table 8.3

TGL1 [slots]	TGL2 [slots]	TGD [slots]
3	–	undefined
4	–	undefined
5	–	undefined
7	–	undefined
10	–	undefined
14	–	undefined
3	3	15…269
4	4	15…269
5	5	15…269
7	7	15…269
10	10	41…269
14	14	45…269

In the CELL_DCH state the measurement period, T_{Measurement Period, GSM}, for the GSM carrier RSSI measurement is 480 ms.

The UE shall meet the measurement accuracy requirements stated for RXLEV in TS45.008, when the given measurement time allows the UE to take at least 3 GSM carrier RSSI samples per GSM carrier in the monitored set during the measurement period.

Table 8.4

TGL	Number of GSM carrier RSSI samples in each gap.
3	1
4	2
5	3
7	6
10	10
14	15

In case the UE is not able to acquire the required number of samples per GSM carrier during one measurement period, the UE shall measure as many GSM carriers as possible during that measurement period using at least 3 samples per GSM carrier. The GSM carriers that were not measured during that measurement period shall be measured in the following measurement periods. This means that, in this particular case, the L1 reporting period to higher layers of a GSM neighbour can be a multiple of the measurement period.

2) For a UE not requiring compressed mode

The samples allocated to each carrier shall as far as possible be uniformly distributed over each measurement period. At least 3 received signal level measurement samples are required per RSSI value. The measurement period is 480 ms.

8.1.2.5.2 BSIC verification

1) For a UE requiring compressed mode

In order for the requirements in the following subsections to apply the UTRAN must provide a transmission gap pattern sequence with measurement purpose GSM Initial BSIC identification or with measurement purpose GSM BSIC re-confirmation, using the following combinations for TGL1, TGL2 and TGD:

Table 8.5

TGL1 [slots]	TGL2 [slots]	TGD [slots]
5	–	undefined
7	–	undefined
10	–	undefined
14	–	undefined
5	5	15…269
7	7	15…269
10	10	41…269
14	14	45…269

The procedure for BSIC verification on a GSM cell can be divided into the following two tasks:

Initial BSIC identification

Includes searching for the BSIC and decoding the BSIC for the first time when there is no knowledge about the relative timing between the FDD and GSM cell. The UE shall trigger the initial BSIC identification within the available transmission gap pattern sequence with purpose "GSM Initial BSIC identification". The requirements for Initial BSIC identification can be found in 8.1.2.5.2.1.

BSIC re-confirmation

Tracking and decoding the BSIC of a GSM cell after initial BSIC identification is performed. The UE shall trigger the BSIC re-confirmation within the available transmission gap pattern sequence with purpose "GSM BSIC re-confirmation". The requirements for BSIC re-confirmation can be found in 8.1.2.5.2.2.

Measurements on a GSM cell can be requested with BSIC verified or BSIC non-verified. If GSM measurements are requested with BSIC verified the UE shall be able to report the GSM cells with BSIC verified for those cells where the verification of BSIC has been successful.

If the network requests measurements on a GSM cell with BSIC verified, the UE shall behave as follows:

– The UE shall perform GSM carrier RSSI measurements according to Section 8.1.2.5.1 when ever a transmission gap pattern sequence with the purposes "GSM carrier RSSI measurements" is provided and the UE shall perform measurement reporting as defined in Section 8.6.7.6 of [16].

– The UE shall perform BSIC identification according to Section 8.1.2.5.2.1 when a "GSM Initial BSIC identification" transmission gap pattern sequence is activated. The UE shall use the last available GSM carrier RSSI measurement results for arranging GSM cells in signal strength order for performing BSIC identification.

– The UE shall perform BSIC re-confirmation according to Section 8.1.2.5.2.2 when a "GSM BSIC re-confirmation" transmission gap pattern sequence is activated.

– If a "GSM BSIC re-confirmation" transmission gap pattern sequence is not activated in parallel to a "GSM Initial BSIC identification" transmission gap pattern sequence or within one frame from the deactivation of a "GSM Initial BSIC identification" transmission gap pattern sequence, the BSIC shall be considered to be non-verified after 10s has elapsed after the UE identified the BSIC of the cell..

The UE shall perform event evaluation for event-triggered reporting after the BSIC has been verified for a GSM cell. The UE shall use the last available GSM carrier RSSI measurement results in event evaluation and event-triggered reporting. Periodic reports shall be triggered according to Sections 8.6.7.5 and 8.6.7.6 of [16].

The BSIC of a GSM cell is considered to be "verified" if the UE has decoded the SCH of the BCCH carrier and identified the BSIC at least one time (initial BSIC identification) and from that moment the BSIC shall be re-confirmed at least once every T_{re-confirm_abort} seconds. Otherwise the BSIC of the GSM cell is considered as "non-verified". If a transmission gap pattern sequence with a purpose "GSM BSIC re-confirmation " is not activated by the network after BSIC identified or the "GSM BSIC re-confirmation " transmission gap pattern sequence is deactivated, the UE shall behave as described previously in this section.

The parameters N_{identify_abort} and T_{re-confirm_abort} are defined by higher layers and are signalled to the UE together with the transmission gap pattern sequence. N_{identify_abort} indicates the maximum number of patterns that the UE shall use to attempt to decode the unknown BSIC of the GSM cell in the initial BSIC identification procedure. T_{re-confirm_abort} indicates the maximum time allowed for the re-confirmation of the BSIC of one GSM cell in the BSIC re-confirmation procedure.

The UE shall be able to decode a BSIC within a transmission gap when the time difference between the middle of the received GSM synchronisation burst at the UE and the middle of the effective transmission gap is within the limits specified in table 8.6.

The effective transmission gap is calculated by assuming both UL and DL compressed mode and applying the worst-case values for UL/DL timing offset and pilot field length of last DL gap slot.

Table 8.6: The gap length and maximum time difference for BSIC verification

Gap length [slots]	Maximum time difference [μs]
5	± 500
7	± 1200
10	± 2200
14	± 3500

The UE shall be able to perform BSIC verification at levels down to the reference sensitivity level or reference interference levels as specified in TS 45.005.

2) For a UE not requiring compressed mode

If a BSIC is decoded and matches the expected value, it is considered as "verified", else it is considered as "non verified".

The UE shall be able to perform BSIC verification at levels down to the reference sensitivity level or reference interference levels as specified in TS 45.005.

8.1.2.5.2.1 Initial BSIC identification

This measurement shall be based on a transmission gap pattern sequence with the purpose "GSM Initial BSIC identification"

For GSM cells that are requested with BSIC verified the UE shall attempt to decode the SCH on the BCCH carrier of the 8 strongest BCCH carriers of the GSM cells indicated in the measurement control information. The UE shall give priority for BSIC decoding attempts in decreasing signal strength order to BSIC carriers with unknown BSIC. The strongest BCCH carrier is defined as the BCCH carrier having the highest measured GSM carrier RSSI value after layer 3 filtering. The GSM signal strength levels used in BSIC identification for arranging GSM cells in signal strength order shall be based on the latest GSM carrier RSSI measurement results available.

When the UE attempts to decode the BSIC of one GSM BCCH carrier with unknown BSIC, the UE shall use all available transmission gaps, within the transmission gap pattern sequence with the purpose "GSM Initial BSIC identification", to attempt to decode the BSIC from that GSM BCCH carrier.

If the BSIC of the GSM BCCH carrier has been successfully decoded the UE shall immediately continue BSIC identification with the next GSM BCCH carrier, in signal strength order, with unknown BSIC. The GSM cell for which the BSIC has been successfully identified shall be moved to the BSIC re-confirmation procedure.

If the UE has not successfully decoded the BSIC of the GSM BCCH carrier within N_{identify_abort} successive patterns, the UE shall abort the BSIC identification attempts for that GSM BCCH carrier. The UE shall continue to try to perform BSIC identification of the next GSM BCCH carrier in signal strength order. The GSM BCCH carrier for which the BSIC identification failed shall not be re-considered for BSIC identification until BSIC identification attempts have been made for all the rest of the 8 strongest GSM BCCH carriers in the monitored set with unknown BSIC.

N_{identify_abort} values are given for a set of reference patterns in table 8.7. T_{identify_abort} is the elapsed time during N_{identify_abort} transmission gap patterns (informative). The figures given in table 8.7 represent the number of patterns required to guarantee at least two attempts to decode the BSIC for one GSM BCCH carrier.

Table 8.7: The worst-case time for identification of one previously not identified GSM cell

	TGL1 [slots]	TGL2 [slots]	TGD [slots]	TGPL1 [frames]	T_{identify abort} [s]	N_{identify_abort} [patterns]
Pattern 1	7	–	undefined	3	1.56	52
Pattern 2	7	–	undefined	8	5.28	66
Pattern 3	7	7	47	8	2.88	36
Pattern 4	7	7	38	12	2.88	24
Pattern 5	14	–	undefined	8	1.84	23
Pattern 6	14	–	undefined	24	5.28	22
Pattern 7	14	14	45	12	1.44	12
Pattern 8	10	–	undefined	8	2.88	36
Pattern 9	10	10	75	12	2.88	24

8.1.2.5.2.2 BSIC re-confirmation

The requirements of this section are applicable for BSIC re-confirmation.

The UE shall maintain the timing information of 8 identified GSM cells. Initial timing information is obtained from the initial BSIC identification. The timing information shall be updated every time the BSIC is decoded.

For each transmission gap of a transmission gap pattern sequence with the measurement purpose "GSM BSIC re-confirmation", the UE shall attempt to decode the BSIC falling within the effective gap duration. If more than one BSIC can be decoded within the same gap, priority shall be given to the least recently decoded BSIC.

If the UE fails to decode the BSIC after two successive attempts or if the UE has not been able to re-confirm the BSIC for a GSM cell within T_{re-confirm_abort} seconds, the UE shall abort the BSIC re-confirmation attempts for that GSM cell. The GSM cell shall be treated as a new GSM cell with unidentified BSIC and the GSM cell shall be moved to the initial BSIC identification procedure, see section 8.1.2.5.2.1. The UE shall be able to make BSIC re-confirmation attempts for the 8 strongest GSM cells in the monitored list.

N_{re-confirm_abort} is the number of transmission gap patterns executed during T_{re-confirm_abort} (informative).

Table 8.8: The worst-case time for BSIC re-confirmation of one GSM cell

	TGL1 [slots]	TGL2 [slots]	TGD [slots]	TGPL1 [frames]	T_{re-confirm_abort}[s]	N_{re-confirm_abort} [patterns]
Pattern 1	7	–	undefined	3	1.32	44
Pattern 2	7	–	undefined	8	5.04	63
Pattern 3	7	–	undefined	15	8.1	54
Pattern 4	7	7	69	23	10.12	44
Pattern 5	7	7	69	8	2.64	33
Pattern 6	14	–	undefined	8	1.6	20
Pattern 7	14	14	60	8	0.80	10
Pattern 8	10	–	undefined	8	2.64	33
Pattern 9	10	–	undefined	23	8.05	35
Pattern 10	7	7	47	8	2.64	33
Pattern 11	7	7	38	12	2.64	22
Pattern 12	14	–	undefined	24	5.04	21
Pattern 13	14	14	45	12	1.20	10
Pattern 14	10	–	undefined	13	4.94	38
Pattern 15	10	10	75	12	2.64	22

8.1.2.5.3 Periodic Reporting

Reported measurements in periodically triggered measurement reports shall meet the requirements in section 9.

8.1.2.5.4 Event Triggered Reporting

Reported measurements in event triggered measurement reports shall meet the requirements in section 9.

The UE shall not send any event triggered measurement reports, as long as the reporting criteria is not fulfilled.

The measurement reporting delay is defined as the time between any event that will trigger a measurement report until the UE starts to transmit the measurement report over the Uu interface. This requirement assumes that that the measurement report is not delayed by other RRC signalling on the DCCH. This measurement reporting delay excludes a delay uncertainty resulted when inserting the measurement report to the TTI of the uplink DCCH . The delay uncertainty is twice the TTI of the uplink DCCH.

The event triggered reporting delay requirement is valid when the UE for each GSM carrier in the monitored set can take the required number of samples during the measurement period T_{Measurement Period, GSM} (see section 8.1.2.5.1).

The event triggered measurement reporting delay for a GSM cell with verified BSIC, measured without L3 filtering shall be less than 2*T_{Measurement Period, GSM}, where T_{Measurement Period, GSM} is defined in Section 8.1.2.5.1. When L3 filtering is used an additional delay can be expected. For a GSM cell with non-verified BSIC an additional delay according to section 8.1.2.5.2.1 Initial BSIC identification can be expected.

8.1.2.6 E-UTRAN measurements

The requirements in this section apply only to UEs supporting UTRAN FDD and E-UTRAN FDD and TDD.

1) In CELL_DCH state when a transmission gap pattern sequence is provided by the UTRAN the UE shall continuously measure previously detected E-UTRAN cells and search for new E-UTRAN cells.

In order for the requirements in the following subsections to apply the UTRAN must provide a transmission gap pattern sequence with measurement purpose "E-UTRAN measurement" using the following combinations for TGL1, TGL2, TGD and Max TGPL:

Table 8.8a

TGL1 [slots]		TGL2 [slots]		TGD [slots]		Max TGPL [frames]
≥10		–		undefined		12

2) If the UE does not need compressed mode to perform E-UTRAN measurements:

– the UE shall measure either all E-UTRAN cells present in the monitored set or, if only frequencies are provided in the neighbour cell list, the strongest cells present in the detected set, up to the monitoring capabilities of the UE.

– the relevant requirements for E-UTRAN RRC_CONNECTED mode specified in 3GPP TS 36.133 [24] shall apply. This is further detailed in the following subclauses.

8.1.2.6.1 Identification of a new cell

When compressed mode gaps are used for E-UTRAN measurements, the UE shall be able to identify a new detectable E-UTRAN cell within

(normal performance) and

(reduced performance);

If the UE does not need compressed mode to perform E-UTRAN measurements, the UE shall be able to identify a new detectable E-UTRAN cell within ms.

Where:

T_E-UTRAN: This is the minimum time that is available for E-UTRAN measurements during a 480ms period with an arbitrarily chosen timing. The minimum time per compressed mode gap is calculated by subtracting 2*0.5 ms from the length of the gap.

N_freq,E-UTRAN:This is the number of E-UTRAN carriers being monitored

N_{freq,E-UTRA,n}: Number of E-UTRAN carriers to be monitored with normal performance

N_{freq,E-UTRA,n,FDD} : Number of E-UTRAN FDD carriers to be monitored with normal performance

N_{freq,E-UTRA,n,TDD} : Number of E-UTRAN TDD carriers to be monitored with normal performance

N_freq,_E-UTRA,r: Number of E-UTRAN carriers to be monitored with reduced performance.

If N_{freq,E-UTRA,r} is not equal to zero then K_n and K_r are as shown in table 8.0a. Otherwise K_n=1 and all E-UTRA layers have normal performance.

The minimum performance requirements for a UE which does not indicate support for Increased UE carrier monitoring E-UTRA [16,31] are calculated assuming all E-UTRA carriers required to be monitored for such UE, are having normal performance and are in normal performance group, i.e. N_{freq,E-UTRA,n} = N_freq,E-UTRAN and N_{freq,E-UTRA,r} =0.

T_{Basic_Identify_E-UTRAN} = 480ms

When L3 filtering is used an additional delay can be expected.

An E-UTRANcell shall be considered detectable when

– RSRP|_dBm RSRP Ês/Iot according to Annex B.2.1 for a corresponding Band

– other RSRP related side condition given in Section 9.1 of [24] are fulfilled,

– SCH_RP|_dBm and SCH_RP/Iot according to Annex B.2.1 for a corresponding Band

8.1.2.6.2 E-UTRAN RSRP and RSRQ measurement period

When compressed mode gaps are scheduled for E-UTRAN measurements the UE physical layer shall be capable of reporting measurements to higher layers with measurement accuracy as specified in sub-clause 9.1.4a and 9.1.4b with measurement period of T_{Measurement_Period_E-UTRAN} =480 x K_n x N_{freq,E-UTRA,n} ms (normal performance) and T_{Measurement_Period_E-UTRAN} =480 x K_r x N_{freq,E-UTRA,r,} (reduced performance) where N_{freq,E-UTRA,n}and N_{freq,E-UTRA,r}are defined in section 8.1.2.6.

The UE shall be capable of performing RSRP and RSRQ measurements of at least 4 E-UTRAN cells per E-UTRAN frequency, according to its supported UE capabilities. Additionally, for a UE supporting E-UTRA measurements in Cell-DCH state, the UE shall be capable of monitoring a minimum total of at least 13 carrier frequency layers, including the intrafrequency serving layer and comprising of any allowed combination of E-UTRA FDD, E-UTRA TDD, UTRA FDD, UTRA TDD and GSM layers (one GSM layer corresponds to 32 cells).

8.1.2.6.3 Periodic reporting

Reported measurements in periodically triggered measurement reports shall meet the requirements in section 9.

8.1.2.6.4 Void

8.1.2.6.5 Event Triggered reporting

Reported measurements in event triggered measurement reports shall meet the requirements in section 9.

The UE shall not send any event triggered measurement reports, as long as the reporting criteria is not fulfilled.

The measurement reporting delay is defined as the time between any event that will trigger a measurement report until the UE starts to transmit the measurement report over the Uu interface. This requirement assumes that the measurement report is not delayed by other RRC signalling on the DCCH. This measurement reporting delay excludes a delay uncertainty resulted when inserting the measurement report to the TTI of the uplink DCCH . The delay uncertainty is twice the TTI of the uplink DCCH.

The event triggered measurement reporting delay, measured without L3 filtering shall be less than T _{identify ,E-UTRAN} defined in Section 8.1.2.6.1When L3 filtering is used an additional delay can be expected.

If a cell has been detectable at least for the time period than T _{identify ,E-UTRAN} and then triggers the measurement report as per TS 25.331, section 14 [16], the event triggered measurement reporting delay shall be less than T_{Measurement_Period_E-UTRAN} provided the timing to that cell has not changed more than ± 50 Ts while transmission gap has not been available and the L3 filter has not been used.