7.7.48 Common Flags
29.0603GPPGeneral Packet Radio Service (GPRS)GPRS Tunnelling Protocol (GTP) across the Gn and Gp interfaceRelease 17TS
The Common Flags information element is used to hold values for multiple bit flags.
The Prohibit Payload Compression bit field is relevant only for A/Gb mode access and is used to determine whether or not an SGSN should attempt to compress the payload of user data when the users asks for it to be compressed.
The MBMS Service Type bit field is relevant only for MBMS session start procedure and is used to determine whether the MBMS session is for multicast service or for broadcast service.
The RAN Procedures Ready bit field is relevant for the Secondary PDP Context Activation Procedure and is used to indicate that RAN Procedures are ready and that the SGSN is ready to receive payload from the GGSN on the new PDP Context.
The MBMS Counting Information bit field is relevant only for MBMS session start procedure and is used to determine whether the MBMS counting procedures are applicable for this MBMS session.
The NRSN bit field is relevant for Create PDP Context and Update PDP Context procedures and is used by SGSN to indicate to GGSN support of network requested bearer control procedure in the SGSN.
The No QoS negotiation bit field is relevant for an Update PDP Context procedure and is used by SGSN to indicate to GGSN whether QoS re-negotiation may be done during the Update procedure.
The Upgrade QoS Supported bit field is relevant for an Create PDP Context or Update PDP Context procedure and is used by SGSN to indicate to GGSN whether QoS upgrade in Response message functionality is supported.
The Dual Address Bearer Flag bit field is relevant for the PDP Context Activation procedure and is used by SGSN to indicate to the GGSN that the PDP type, determined based on the MS request and subscription information, is set to IPv4v6 and all SGSNs, which the MS may be handed over to, are Release 9 or above supporting dual addressing, which is determined based on node pre‑configuration by the operator.
Bits marked as Spare shall be assigned the value 0 by the sending node and shall not be evaluated by the receiving node.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type=148 (Decimal) |
|||||||||
|
2-3 |
Length |
|||||||||
|
4 |
Dual Address Bearer Flag |
Upgrade QoS Supported |
NRSN |
No QoS negotiation |
MBMS Counting Information |
RAN Procedures Ready |
MBMS Service Type |
Prohibit Payload Compression |
||
Figure 62a: Common Flags Information Element