Cisco Cisco Packet Data Gateway (PDG) Guía Para Resolver Problemas
Ty Interface Support
▀ Overview
▄ Cisco ASR 5000 Series Enhanced Feature Configuration Guide
OL-22983-01
Terminology and Definition
This section provides the descriptions of the terms used in this chapter for IMS authorization service support.
Binding Information: The binding information associates a bearer to the IP flows of a session. The binding
information is based on IMS session information for IMS sessions and sent by UE. The system receives the
binding information from the UE during bearer activation or modification. The binding information consists of
flow identifiers, QoS information, and flow description, if any for the IMS session.
binding information from the UE during bearer activation or modification. The binding information consists of
flow identifiers, QoS information, and flow description, if any for the IMS session.
Flow Identifier: In an IMS session an IP flow is indicated uniquely by means of a flow identifier. The flow
identifier is created based on the ordinal number of the flow stream and of the IP flow in the session where the
IP flows are arranged based on the ports used.
IP flows are arranged based on the ports used.
Binding Mechanism: This mechanism is used to associate a bearer with the IP flow(s) of an IMS session in the
PDF.
Service-based Local Policy (SBLP): This term refers to the instantiation of a policy for use of bearer resources
in the access network based on Authorization by a service. In the context of Ty interface this is the combined
QoS given to a set of IP flows for an IMS session.
QoS given to a set of IP flows for an IMS session.
Service Based Authorization: This term refers to the authorization for use of bearer resources in the access
network based on a determination by the application, possibly due to negotiation involving the user. In general,
bearer resources are authorized if the resources requested at the bearer do not exceed the resources negotiated
or requested at the service level.
bearer resources are authorized if the resources requested at the bearer do not exceed the resources negotiated
or requested at the service level.
Charging Rule: This is a set of information that contains the key to identify the packet flow(s) and defines how
the flow(s) is to be charged. The Traffic Plane Function (TPF)/ PCEF installs the charging rules either
statically or dynamically.
statically or dynamically.
Dynamic Charging Rule: The charging rules that depend upon real time analysis of the IP flow data being
negotiated at the time of the session setup.
Main A10: This is the primary bearer used for all the signaling. The traffic TFTs can be associated with both
main A10 and auxiliary A10.
Auxiliary A10: This is the secondary bearer used for data traffic only.