Serving gateway proxies for non-SIP speakers in a next generation network

摘要

Methods and systems for extending the IMS/SIP architecture of the NGN to provide QoS service to generic bearer flows. QoS treatment of a bearer flow destined to a non-SIP client attached to the network via an attachment segment connected to an attachment gateway is supported. A SIP-INVITE message is received in respect of the bearer flow. The SIP-INVITE message contains a Universal Resource Identifier (URI) identifying the non-SIP client as a destination of the bearer flow. An attempt is made to install a QoS policy on the attachment segment in accordance with a Traffic Specification (T-Spec) identified in the SIP-INVITE message, and the result of the installation attempt detected. A appropriate SIP messaging is generated on behalf of the non-SIP client, to either accept or refuse the bearer flow, based on the detected result.

主权项

1. In a communication network in which Session Initiation Protocol (SIP) is used to establish communications sessions with QoS treatment of bearer flows, a method of providing QoS treatment of a bearer flow destined to a non-SIP client attached to the network via an attachment segment connected to an attachment gateway, the method comprising steps of:
receiving a SIP-INVITE message in respect of the bearer flow, the SIP-INVITE message containing a Universal Resource Identifier (URI) identifying the non-SIP client as a destination of the bearer flow; attempting to install a QoS policy on the attachment segment in accordance with a Traffic Specification (T-Spec) identified in the SIP-INVITE message; detecting a result of the attempt to install the QoS policy; and generating appropriate SIP messaging on behalf of the non-SIP client to either accept or refuse the bearer flow, based on the detected result.