Patent ID: 7269155

Claim:
A method for performing a handoff of a mobile subscriber device between a first and a second wireless router in a communication network, the method comprising: when the subscriber device is moving from a coverage area of the first wireless router to a coverage area of the second wireless router, unicast transmitting a routing advertisement, including information identifying the subscriber device, from the subscriber device to the second wireless router; updating a routing table of the second wireless router in accordance with the information included in the routing advertisement when the second wireless router receives the routing advertisement; changing communication routing for the subscriber device from the first wireless router to the second wireless router; and unicast transmitting another routing advertisement, including information identifying the subscriber device, along a path of communication between the second wireless router and an access point via which the second wireless router gains access to a portion of the network, to inform the access point of the change of communication routing with the subscriber device, wherein said path includes a plurality of wireless routers via which said another routing advertisement travels to reach the access point.