Cisco Cisco ASR 5000
Paging in Common Routing Area for 2G and 3G
How it Works ▀
SGSN Administration Guide, StarOS Release 18 ▄
How it Works
This section describes the support for common Routing Area (RA) for 2G and 3G in detail. Consider the following 2G
and 3G scenarios:
and 3G scenarios:
Paging in Common Routing Area for 2G subscriber
The Subscriber is attached in 2G and is in Standby state. Downlink data is received at the SGSN and it starts paging in
both 3G and 2G as the RA is shared.
both 3G and 2G as the RA is shared.
Scenario-1:
A detach request (power off) is sent in 3G, stop paging in 2G
Handle the detach request (power off).
Scenario-2:
If detach request (power off) is sent in 3G, stop paging in 3G
Indicate to the 2G network
Scenario-3:
If page response arrives in 2G, stop paging in 3G
Handle the page response in 2G.
Scenario-4:
If service request arrives in 3G, drop the packet.
Any packet other than RAU, Attach and Detach (power off) as page response will be dropped in the other RAT.
In paging policy has to be RA based under GPRS service to initiate common RA paging.
To enable common Routing Area paging, the configured paging-policy under the GPRS service must be Routing Area
based. If the paging-policy configuration is not Routing Area based BSSGP paging, this feature will not be supported
though the Routing Area is shared.
based. If the paging-policy configuration is not Routing Area based BSSGP paging, this feature will not be supported
though the Routing Area is shared.
Paging in Common Routing Area for 3G subscriber
The Subscriber is attached in 3G and is in an IDLE state. Downlink data is received at the SGSN and it starts paging in
both 3G and 2G as the RA is shared.
both 3G and 2G as the RA is shared.
Scenario-1:
If a detach request (power off) is sent in 3G, stop paging in 2G.
Handle detach request (power off).
Scenario-2:
If a detach request (power off) is sent in 2G, stop paging in 2G.
Indicate to 3G network.
Scenario-3: