Patent ID: 8638748

Claim:
A base station comprising: a receiving unit that receives a service flow addition request including an identifier of a first service flow which is assigned, by another apparatus, to the first service flow to be newly established with respect to a mobile station; a determining unit that determines whether a competition of identifiers occurs by determining whether the identifier of the first service flow and an identifier of a second service flow which is assigned, by the base station, to the second service flow established with respect to the mobile station are the same as each other; a changing unit that changes the identifier of the first service flow or the identifier of the second service flow, when the determining unit determines that the identifier of the first service flow and the identifier of the second service flow are the same as each other; and an establishing unit that establishes the first service flow by using the identifier of the first service flow with the competition being eliminated against the second service flow through the change by the changing unit, wherein the changing unit comprises: an adding unit that adds a service flow similar to the second service flow, the added service flow including a different identifier from that of the second service flow when the determining unit determines that the competition of identifiers occurs; and a deleting unit that deletes the second service flow after the service flow is added by the adding unit.