Cisco Cisco ASR 5000
Support For QoS Upgrade From GGSN or PCRF
▀ Feature Description
▄ SGSN Administration Guide, StarOS Release 18
Feature Description
The SGSN negotiates the Requested QoS with Subscribed QoS from HLR (the HLR Subscribed QoS can be over-ridden
by the local configuration). The SGSN includes this Negotiated QoS in Create PDP Context Request and Update PDP
Context Request messages to the GGSN, the negotiate QoS is capped to the Subscribed QoS and cannot exceed it. The
“Upgrade QoS Supported” flag is not set, and the GGSN cannot negotiate a QoS higher than that sent by the SGSN.
by the local configuration). The SGSN includes this Negotiated QoS in Create PDP Context Request and Update PDP
Context Request messages to the GGSN, the negotiate QoS is capped to the Subscribed QoS and cannot exceed it. The
“Upgrade QoS Supported” flag is not set, and the GGSN cannot negotiate a QoS higher than that sent by the SGSN.
This feature enables the functionality, where the SGSN can set the “Upgrade QoS Supported” flag within the common
flags IE in Tunnel management messages, Create PDP Context Request and Update PDP Context Request messages.
The SGSN accepts the QoS from GGSN in Create PDP Context Response, Update PDP Context Request/Response
messages as the Negotiated QoS for the PDP session.
flags IE in Tunnel management messages, Create PDP Context Request and Update PDP Context Request messages.
The SGSN accepts the QoS from GGSN in Create PDP Context Response, Update PDP Context Request/Response
messages as the Negotiated QoS for the PDP session.
In a 3G scenario, if QoS is downgraded by the RNC then SGSN sets the “No QoS negotiation” flag in the common
Flags IE of the corresponding Update PDP Context Request. The “QoS upgrade supported” flag is not set.
Flags IE of the corresponding Update PDP Context Request. The “QoS upgrade supported” flag is not set.