Patent ID: 8477636
Filing Date: 2013-07-02
Classification: H04L,H04W

Abstract:
1. A method of providing an update on access network capability to an IP Multimedia System (IMS) network, the method comprising the steps of: a User Equipment (UE) connected to the access network, sending a Session Initiation Protocol (SIP) registration request to the IMS network, wherein the SIP registration request includes a P-Access-Network-Info header having a tag providing current information, including current round trip time in the access network, regarding a capability of the access network; and responsive to a triggering event, wherein said triggering event comprises one or more values including, a predetermined threshold value for the degree of change in measured average bandwidth within the access network or between the access and IMS networks, the IMS network modulating service provisions according to the information regarding the capability of the access network available in the tag.