Patent ID: 6832087
Filing Date: 2004-12-14
Classification: H04L,H04W

Abstract:
A method of implementing a low latency handoff by a mobile node between source and target nodes, comprising the steps of:(a) triggering at least one of the mobile node and the source and target nodes to initiate the handoff process; (b) identifying at least one candidate node to the source node; (c) establishing a tunnel between the source node and each of the at least one candidate node before the mobile node completes an L2 handoff from the source node; (d) identifying one target node from the at least one candidate node; and (e) removing the tunnel(s) established in step (c) except the tunnel for the one target node identified in step (d), wherein using the tunnel for the one target node, the mobile node keeps data communication with the source node through the one target node after the mobile node completes the L2 handoff from the source node to the one target node but before undergoing IP routing update with the one target node.