ts_125331v120300p

3GPP TS 25.331 version 12.3.0 Release 12
465
ETSI TS 125 331 V12.3.0 (2014-10)
8.6.3.15 SR-VCC Info
The presence of the IE "NONCE" in the IE "SR-VCC Info" triggers the relevant actions for mapping keys from the PS
domain to the CS domain. The IE "NONCE" is not included if ciphering is not active for PS domain prior to the
reception of the the IE "SR-VCC Info".
If the IE "SR-VCC Info" is included and the IE "NONCE" is present in the IE "SR-VCC Info", the UE shall:
1> set the "Status" in the variable CIPHERING_STATUS of the CS domain to "Started";
1> calculate the CK and IK for the CS domain as specified in [40];
1> if the IE "SR-VCC Info" is included in a message other than HANDOVER FROM UTRAN COMMAND:
2> set the variable LATEST_CONFIGURED_CN_DOMAIN to "CS domain";
2> use the ciphering algorithm in use for the PS domain as part of the new ciphering configuration for the CS
domain unless otherwise specified by the message triggering SR-VCC.
If the IE "SR-VCC Info" is included, the UE shall:
1> add the signalling connection with the identity "CS domain" in the variable
ESTABLISHED_SIGNALLING_CONNECTIONS.
8.6.3.16 rSR-VCC Info
If the IE "rSR-VCC Info" is received and contains the IE "IMS information", the UE shall:
1> indicate the "IMS information" IE to the upper layers as part of rSR-VCC procedure.
If the IE "rSR-VCC Info" is received and contains the IE "NONCE", the UE shall:
1> forward the IE "NONCE" to upper layers as specified in [79];
8.6.3.17 Access Group identity
If the IE "Access Group identity" is included, the UE shall:
1> store the value in the variable CONNECTED_MODE_ACCESS_CONTROL, replacing any stored value of the
IE "Access Group identity";
1> if in CELL_FACH; or
1> if in CELL_PCH state and the variable READY_FOR_COMMON_EDCH or variable
HSPA_RNTI_STORED_CELL_PCH is set to TRUE:
2> if System Information Block type 24 is scheduled on the broadcast channel:
3> if the n-th Bit in the IE "DTCH transmission blocked" in the variable
CONNECTED_MODE_ACCESS_CONTROL is set to 1, where n is the value stored in the IE "Access
Group identity" in the variable CONNECTED_MODE_ACCESS_CONTROL:
4> configure RLC entities mapped onto the logical channel DTCH to not submit any data PDUs to lower
layers.
3> else:
4> configure RLC entities mapped onto the logical channel DTCH to allow submitting data PDUs to
lower layers.
ETSI