Method to take mobile station preference for channel type into consideration when performing codec negotiation

摘要

Controlling establishment of a connection between an originating subscriber connected via an originating radio network to a communication network and a terminating subscriber connected via a terminating radio network to the communication network. The connection is established between originating payload node and terminating payload node employing a common coding scheme. Coding scheme negotiation comprises establishing, in originating control node (OCN), a list of supported coding schemes of originating subscriber, originating radio network and originating payload node. Determining, by the OCN, a radio channel property of the originating subscriber, oRCP, relaying the list and the radio channel property between the control nodes controlling the connection towards a terminating control node (TCN). Removing, by the control nodes, non-supported coding schemes from the list. Determining, by the TCN, common coding scheme(s) for the connection by selecting a remaining coding scheme considering the oRCP and a radio channel property of the terminating subscriber, tRCP.

主权项

1. A method for controlling the establishment of a connection between an originating subscriber connected via an originating radio network to a communication network and a terminating subscriber connected via a terminating radio network to the communication network, the method comprising:
establishing, in an originating control node, a list of supported coding schemes from supported coding schemes of the originating subscriber, supported coding schemes of the originating radio network and supported coding schemes of an originating payload node, determining, by the originating control node, a radio channel property of the originating subscriber, oRCP, that indicates a channel rate that is preferred or required by the originating subscriber, relaying, by one or more intermediate control nodes, the list of supported coding schemes and the oRCP a terminating control node and removing, by the one or more intermediate control nodes, non-supported coding schemes from the list of supported coding schemes to provide a list of remaining supported coding schemes, and determining, by the terminating control node, a common coding scheme for the connection by selecting one of the coding schemes from the list of remaining supported coding schemes based on the radio channel property of the originating subscriber, oRCP and based on a radio channel property of the terminating subscriber, tRCP, that indicates a channel rate that is preferred or required by the terminating subscriber, wherein the communication network comprises control nodes through which control signals are routed and payload nodes through which payload data is routed, wherein the connection is to be established between the originating payload node and a terminating payload node, and wherein the originating payload node and the terminating payload node are adapted to employ the common coding scheme.