Patent ID: 7613147
Filing Date: 2009-11-03
Classification: H04L,H04W

Abstract:
1. A method for establishing a session involving a mobile radio terminal configured to access a packet-based access network via a radio access network, comprising: establishing a first bearer with an interactive quality of service extending between the mobile terminal and the packet-based access network; using the first bearer to initiate a session that includes a packet-based voice communication and to carry one or more session messages for implementing a packet-based voice service; establishing a second bearer with a conversational quality of service for the session extending between the mobile terminal and the packet-based access network and carrying voice packets associated with the packet-based voice service; and using the first bearer with the interactive quality of service to carry control messages associated with the packet-based voice service, wherein the first and second bearers are radio access bearers (RABs) and the method further comprises: establishing a first Packet Data Protocol (PDP) context for session messages relating to the packet-based voice service and for control messages associated with the voice packets; mapping the first PDP context onto the first RAB; establishing a second PDP context for voice packets; and mapping the second PDP context onto the second RAB.