Patent ID: 8385914

Claim:
A method for implementing communications among multiple subnets that are covered by a physical Mobile Switching Center (MSC), comprising: mapping a physical MSC having a physical MSC number to multiple virtual MSCs that are logical MSCs within the physical MSC, wherein each virtual MSC corresponds to one subnet that represents one or more location areas within the physical MSC; assigning, to each of the multiple virtual MSCs, a virtual MSC number; setting relationships between each subnet that represents one or more location areas within the physical MSC and each virtual MSC number; receiving a location update request from a wireless mobile terminal, wherein the location update request comprises information of an original location area and a current location area of the wireless mobile terminal; identifying a virtual MSC number of one of the virtual MSCs that is currently visited by the wireless mobile terminal, according to the current location area and the set relationship between each subnet that represents one or more location areas within the physical MSC and each virtual MSC number; and transmitting the identified virtual MSC number of one of the virtual MSCs that is currently visited by the wireless mobile terminal when the wireless mobile terminal implements communications.