Patent ID: 7801035
Filing Date: 2010-09-21
Classification: H04L,H04M,H04Q

Abstract:
1. A method in an interworking node for exchanging service parameters between a circuit-switched network in which payload data are transported utilizing a circuit-oriented protocol and a packet-switched network in which payload data are transported utilizing a packet-oriented protocol, wherein as a result of the service parameter exchange, the payload data are transported in the packet-switched network with a precedence level corresponding to a mapped precedence level from the circuit-switched network, said method comprising: receiving in the interworking node, circuit-switched service parameters from the circuit-switched network, wherein the circuit-switched service parameters define a level of precedence assigned to a call in the circuit-switched network by defining multi-level service information, said multi-level service information being selected from (a) precedence information to assign a priority to the call, and (b) pre-emption information for seizing resources for transporting higher precedence calls in the absence of idle resources; and mapping the circuit-switched service parameters into corresponding packet-switched service parameters, wherein the packet-switched service parameters define a level of precedence utilized for a data stream within the packet-switched network corresponding to the level of precedence assigned to the call in the circuit-switched network; wherein a mapping result is utilized to forward payload data across a network boundary between the circuit-switched network and the packet-switched network.