Patent ID: 8059598

Claim:
A wireless communication system, comprising: a plurality of access points for controlling a plurality of access terminals in a radio network; and a plurality of packet access routers (PARs) for providing wireless communication services to the plurality of access terminals through the plurality of access points, each of the PARs comprising a service flow identifier controller for managing a service flow identifier that is used for identifying a connection service of each of the plurality of access terminals, a timer controlled by the service flow identifier controller and measuring a time for preventing a service flow identifier allocation error due to system errors or an abnormal state of a radio network, wherein the service flow identifier controller manages a service flow identifier generated by a home PAR to which the service flow identifier controller belongs and a service flow identifier generated by another PAR among service flow identifiers of an access terminal that has performed handoff from the another PAR to the home PAR, wherein the service flow identifier comprises a PAR identifier for identifying a packet access router that has generated the service flow identifier, wherein both the service flow identifier controller of the home PAR and the service flow identifier controller of the another PAR respectively manage service flow identifiers of the access terminal when the access terminal performs a handoff from the home PAR to the another PAR or when the access terminal performs a handoff from the another PAR to the home PAR, and wherein the service flow identifier controller of the home PAR changes a state of the service flow identifiers of the access terminal in response to the handoff of the access terminal from the home PAR to the another PAR or from the another PAR to the home PAR, and the service flow identifier controller of the another PAR generates the service flow identifiers of the access terminal in response to the handoff of the access terminal from the home PAR to the another PAR or deletes the service flow identifiers of the access terminal in response to the handoff of the access terminal from the another PAR to the home PAR.