W/D NO S/S * X-REF ETSI TS 123.203
This specification addresses the linkage between session controland bearer level resource control mechanisms. The linkage isdefined through two interfaces. One interface (Tx) connects thePolicy and Charging Rules Function PCRF) to an Application Function(e.g., P-CSCF) that is responsible for application level servicedecisions. The other interface(Ty) connects the PCRF to the AGW(e.g., PDSN) that is responsible for bearer resources policyenforcement. The PCRF acts as a Policy Decision Point from theperspective of policy control.
The Tx and Ty interfaces shall allow:
1. Interactions for the purpose of application authorization ofbearer level QoS resources based on the resources negotiated at theapplication layer.
2. Coordination between the application and the bearer level forper flow accounting
3. Notification of loss of bearer from the bearer control entityto the application
4. Application control of the flow of packets on the bearerincluding the restriction of flow end-points (flow filtering).
5. General policy considerations for the allocation of resourceson the bearer in the local domain.
The specification should also consider subscription basedauthorization of flows.
- Edition:
- 09
- Published:
- 06/01/2009
- Number of Pages:
- 54
- File Size:
- 1 file , 3.9 MB
Reviews
There are no reviews yet.