12.53 E-UTRAN Parameters

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

This information element is sent to provide information about E-UTRAN frequencies and priority information about neighbouring E-UTRAN cells.

Table 12.53.1: E-UTRAN parameters information element

< E-UTRAN Parameters IE > ::=

< E-UTRAN_CCN_ACTIVE : bit >

{ 0 | 1 < GPRS E-UTRAN Measurement Parameters :

< GPRS E-UTRAN Measurement Parameters struct >> }

{ 1 < Repeated E-UTRAN Neighbour Cells : < Repeated E-UTRAN Neighbour Cells struct >> } ** 0

{ 1 < Repeated E-UTRAN Not Allowed Cells : < Repeated E-UTRAN Not Allowed Cells struct >> } ** 0

{ 1 < Repeated E-UTRAN PCID to TA mapping : < Repeated E-UTRAN PCID to TA mapping struct >> } ** 0 ;

< GPRS E-UTRAN Measurement Parameters struct > ::=

< Qsearch_P_E-UTRAN : bit(4) >

< E-UTRAN_REP_QUANT : bit >

< E-UTRAN_MULTIRAT_REPORTING : bit(2) >

{ 0 | 1 < E-UTRAN_FDD_REPORTING_THRESHOLD : bit(3) >

{ 0 | 1 < E-UTRAN_FDD_REPORTING_THRESHOLD_2 : bit(6) > }

{ 0 | 1 < E-UTRAN_FDD_REPORTING_OFFSET : bit(3) > } }

{ 0 | 1 < E-UTRAN_TDD_REPORTING_THRESHOLD : bit(3) >

{ 0 | 1 < E-UTRAN_TDD_REPORTING_THRESHOLD_2 : bit(6) > }

{ 0 | 1 < E-UTRAN_TDD_REPORTING_OFFSET : bit(3) > } } ;

< Repeated E-UTRAN Neighbour Cells struct > ::=
{ 1 < EARFCN : bit (16) >

{ 0 | 1 < Measurement Bandwidth : bit (3) > } } ** 0

{ 0 | 1 < E-UTRAN_PRIORITY : bit(3) > }

< THRESH_E-UTRAN_high : bit(5) >

{ 0 | 1 < THRESH_E-UTRAN_low : bit(5) > }

{ 0 | 1 < E-UTRAN_QRXLEVMIN : bit(5) > } ;

< Repeated E-UTRAN Not Allowed Cells struct > ::=

< Not Allowed Cells : < PCID Group IE >>

{ 1 < E-UTRAN_FREQUENCY_INDEX : bit(3) > } ** 0 ;

< Repeated E-UTRAN PCID to TA mapping struct > ::=

{ 1 — each repetition corresponds to a different TA

< PCID to TA mapping : < PCID Group IE >> — group of PCIDs belonging to the same TA

} ** 0

{ 1 < E-UTRAN_FREQUENCY_INDEX : bit(3) > } ** 0 ;

Table 12.53.2: E-UTRAN parameters information element details

E-UTRAN_CCN_ACTIVE (1 bit field)
This field indicates whether CCN is enabled towards E-UTRAN neighbouring cells. It is coded as follows:

0 The broadcast E-UTRAN_CCN_ACTIVE parameter shall apply if available. Otherwise, CCN towards E-UTRAN cells is disabled in the cell.

1 CCN towards E-UTRAN cells is enabled in the cell.

GPRS E-UTRAN Measurement Parameters

Qsearch_P_E-UTRAN (4 bit field)
E-UTRAN_REP_QUANT (1 bit field)
E-UTRAN_MULTIRAT_REPORTING
(2 bit field)
E-UTRAN_FDD_REPORTING_THRESHOLD (3 bit field)
E-UTRAN_FDD_REPORTING_THRESHOLD_2
(6 bit field)
E-UTRAN_FDD_REPORTING_OFFSET
(3 bit field)
E-UTRAN_TDD_REPORTING_THRESHOLD
(3 bit field)
E-UTRAN_TDD_REPORTING_THRESHOLD_2 (6 bit field)
E-UTRAN_TDD_REPORTING_OFFSET
(3 bit field)
These fields control the measurement and reporting of E-UTRAN cells, as defined in 3GPP TS 45.008.

If both TDD and FDD frequencies are provided in the Repeated E-UTRAN Neighbour Cells IE and the E-UTRAN reporting thresholds are present for only one mode (i.e. TDD or FDD), then the parameter values for both modes shall be interpreted as having the same values.

If any of these parameters is included in more than one instance of the PACKET MEASUREMENT ORDER message, the value of the parameter in the instance with the highest PMO_INDEX shall be used.

Repeated E-UTRAN Neighbour Cells

If E-UTRAN cells or frequencies are included in the neighbour cell list, this information element may be included in the message.

EARFCN (16 bit field)
This field specifies the E-UTRA Absolute Radio Frequency Channel Number as defined in 3GPP TS 36.104.

Measurement Bandwidth (3 bit field)
This field specifies the minimum value of the channel bandwidth of all valid E-UTRAN cells on the specified EARFCN. It is defined by the parameter Transmission Bandwidth Configuration, NRB (see 3GPP TS 36.104). The values indicate the number of resource blocks over which the mobile station could measure if the mobile station does not support wideband RSRQ measurements (see 3GPP TS 24.008). A mobile station supporting wideband RSRQ measurements shall measure over the indicated number of resource blocks. The field is coded according to the following table:

bit
3 2 1
0 0 0 NRB = 6
0 0 1 NRB = 15
0 1 0 NRB = 25
0 1 1 NRB = 50
1 0 0 NRB = 75
1 0 1 NRB = 100
All others Reserved for future use. If received by the mobile station, it shall be interpreted as ‘101’.

When missing, this indicates NRB = 6.

E-UTRAN_PRIORITY (3 bit field)
THRESH_E-UTRAN_high (5 bit field)
THRESH_E-UTRAN_low (5 bit field)
If THRESH_E-UTRAN_low is not present, then THRESH_E-UTRAN_low shall take on the same value as THRESH_E-UTRAN_high.
E-UTRAN_QRXLEVMIN (5 bit field)

These fields are used for the inter-RAT cell re-selection algorithm based on priority, as defined in 3GPP TS 45.008. These values apply to each of the EARFCN values listed within this structure.

Repeated E-UTRAN Not Allowed Cells struct

This structure identifies Not Allowed Cells with zero or more corresponding E-UTRAN frequency indices. If no E-UTRAN_FREQUENCY_INDEX is present, the Not Allowed Cells IE is applicable to all E-UTRAN frequencies specified in the Repeated E-UTRAN Neighbour Cells struct(s).

E-UTRAN_FREQUENCY_INDEX (3 bit field)
This field contains the index into the frequencies specified as part of the E-UTRAN Neighbour Cell list. A value of 0 refers to the first E-UTRAN frequency (EARFCN) defined in the list. A value of 1 refers to the second defined frequency and so on.

Not Allowed Cells
This information element identifies one or more E-UTRAN cells by means of their physical layer cell identities (see 3GPP TS 36.211). The mobile station shall not perform measurements or attempt reselection to these cells. This information element is defined as the PCID Group IE described in subclause 12.57.

PCID to TA mapping
This information element identifies, on the frequency or frequencies that this information element is associated with, one or more E-UTRAN cells by means of their physical layer cell identities (see 3GPP TS 36.211) that belong to the same Tracking Area. If no PCIDs or groups of PCIDs are indicated within this structure, then all PCIDs belong to the same Tracking Area.

This information element is defined as the PCID Group IE described in 3GPP TS 44.060.