Patent ID: 6625473
Filing Date: 2003-09-23
Classification: H04W

Abstract:
In a telecommunication system comprising a mobile switching center (MSC) connected to a plurality of base station controllers (BSCs), wherein said MSC includes a plurality of work stations having a processor in a first module and a plurality of access switch processors (ASPs) coupled to respective said base station controllers in a second module, a method for processing a call between originating and terminating call halves in said mobile switching center, comprising the steps of:(a) determining, by an access switch processor (ASP), if a message received therein is transmitted from a base station controller (BSC); (b) if said received message is transmitted from said BSC, selecting one of said work stations for exchanging control signals between said first module and said second module; (c) if said received message is not transmitted from said BSC, determining whether said receive message is transmitted from one of said work stations; and, (d) if said received message is transmitted from said one of said work stations, marking a work station identifier with an index number in a tag parameter of said received message and transmitting said message to said BSC; wherein said step (b) of selecting said work station comprises: (1) retrieving a call distinct code from said received message from said BSC; (2) determining whether said received message is a call originating message; (3) detecting a total number of said work stations within said MSC in service if said received message corresponds to said call originating message; (4) selecting one of said work stations to transmits said call origination message, said work station is selected according to a remainder value, which is derived by dividing said determined total number of said work stations by said retrieved distinct code; (5) storing said selected work station corresponding to said call distinct code in a look-up table of said MSC; and (6) transmitting said received message to said selected work station.