Cisco Cisco ASR 5000
Network Requested Secondary PDP Context Activation
▀ Feature Description
▄ SGSN Administration Guide, StarOS Release 18
Feature Description
The SGSN supports Secondary PDP context activation by the network - NRSPCA.
3GPP TS 23.060 specifies two procedures for GGSN-initiated PDP Context Activation:
Network Requested PDP Context Activation (NRPCA) is supported by SGSN but only for 3G access
Network Requested Secondary PDP Context Activation (NRSPCA) is now supported by both Gn/Gp and S4
type SGSNs.
P-GW supports only the NRSPCA procedure. Network requested bearer control, uesed by P-GW and the SGSN, makes
use of the NRSPCA procedure.
use of the NRSPCA procedure.
Benefits
NRSPCA allows the network to initiate secondary PDP context activation if the network determines that the service
requested by the user requires activation of an additional secondary PDP context.
requested by the user requires activation of an additional secondary PDP context.
Network requested bearer control functionality is mandatory in EPC networks, requiring use of NRSPCA. With this
feature S4-SGSN now supports network requested bearer control.
feature S4-SGSN now supports network requested bearer control.
Relationships to Other Features
For NRSPCA on Gn/Gp SGSN, the sgtp-service configuration must include common IE flags in GTP messages.
Network requested activation must be enabled in the call-control profile.
NRSPCA must be supported on the GGSN used for the PDP session. SGSN indicates support of NRSPCA by setting
the NRSN flag in the common flags IE of the Create PDP Context Request and the Update PDP Context
Request/Response messages to GGSN.
the NRSN flag in the common flags IE of the Create PDP Context Request and the Update PDP Context
Request/Response messages to GGSN.
For S4-SGSN, network requested activation must be enabled in the call-control profile.