8.6.1 CN information elements

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

8.6.1.1 Void

8.6.1.2 CN information info

If the IE "CN information info" is present in a message, the UE shall:

1> if the IE "Primary PLMN Identity" is present:

2> forward the content of the IE "Primary PLMN identity" to upper layers.

1> else:

2> if the IE "PLMN Identity" is present:

3> forward the content of the IE "PLMN identity" to upper layers.

1> if present, forward the content of the IE "CN common GSM-MAP NAS system information" to upper layers;

1> if the IE "CN domain related information" is present:

2> forward each occurrence of the IE "CN domain specific GSM-MAP NAS system info" together with the IE "CN domain identity" to upper layers.

2> if an IE "CN domain specific GSM-MAP NAS system info" is not present for a particular CN domain:

3> indicate to upper layers that no CN system information is available for that CN domain.

NOTE: If UTRAN at SRNS relocation includes and sets the IE "Primary PLMN identity" to the PLMN identity signalled in RANAP RELOCATION REQUEST [57], the UTRAN should also set the IE "PLMN identity" to the PLMN identity in the IE "PLMN Identity" of the Master Information Block transmitted in the cell(s) used by the UE after completed SRNS relocation.

8.6.1.3 Signalling connection release indication

If the IE "Signalling Connection release indication" is present in a message, the UE shall:

1> if all radio access bearers for the CN domain identified with the value of the IE "Signalling Connection release indication" would have been released in the variable ESTABLISHED_RABS after processing of the received message:

2> indicate release of the signalling connection identified with the value of the IE "Signalling Connection release indication" to the upper layers;

2> remove the signalling connection identified with the value of the IE "Signalling Connection release indication" from the variable ESTABLISHED_SIGNALLING_CONNECTIONS.

1> if radio access bearers for the CN domain identified with the value of the IE "Signalling Connection release indication" would remain in the variable ESTABLISHED_RABS after processing of the received message:

2> set the variable INVALID_CONFIGURATION to TRUE.

8.6.1.4 Extended DRX in Idle mode

If upper layers indicate that timer T331 (IE "eDRX value") and timer T332 (IE "Paging Time Window") have been configured, as specified in [5], the UE shall start or restart T331, and stop the timer T332, if running.

If upper layers indicate that timer T331 (IE "eDRX value") and timer T332 (IE "Paging Time Window") have not been configured the UE shall stop the timers T331 and T332, if running.

8.6.1.4.1 T331 expiry

When the timer T331 expires the UE shall:

1> start timer T332;

1> if the UE is in Idle mode:

2> read the master information block and perform actions as specified in subclause 8.1.1.5;

2> start to monitor its paging occasions on the selected PICH.

1> restart timer T331.

8.6.1.4.2 T332 expiry

When the timer T332 expires the UE may:

1> when in Idle mode stop to monitor its paging occasions on the selected PICH.