Patent ID: 7327703

Claim:
A method for concurrently providing a first service between a mobile station and a mobile switching center (MSC) and a second service between the mobile station and a packet data service network (PDSN) in a mobile communication system including the mobile station, a base station in communication with the mobile station, the MSC connected to the base station, and the PDSN connected to the base station, the method comprising the steps of: forming, in the base station, a signaling link for the first service between the base station and the MSC; receiving, in the base station, a service request signal for the second service from the PDSN while providing the first service; upon receipt of the service request signal for the second service, sending, from the base station, a resource assignment request for the second service to the MSC through the formed signaling link, wherein the second service is a voice service or a packet service; and receiving, by the base station, a resource assignment approval signal from the MSC through the formed signaling link, wherein the MSC determines whether the newly requested second service is identical to the presently connected first service by comparing a service option.