MOBILE IPV6 OPTIMISED REVERSE TUNNELLING FOR MULTI-HOMED TERMINALS

摘要

The invention relates to a method for packet-switched data transmission between a multi-homed mobile node and a correspondent node in a mobile communication system comprising a plurality of mobile networks. The method comprises the steps of selecting by the mobile node one of its home addresses to be used for communication with the correspondent node. The mobile node registers at least one of a plurality of addresses assigned to a considered network interface as care-of-address at a mobile node's home agent responsible for the selected home address. The correspondent node's home agent and mobile node's home agent receive and store candidate proxy home agent addresses. A correspondent node's home agent sends a request to the correspondent node. The correspondent node registers at least one of a plurality of addresses assigned to a considered network interface as care-of-address at the correspondent node's home agent. At least one of the proxy home agent addresses, one of the mobile node's care-of-addresses, and one of the correspondent node's care-of-addresses is selected on both the mobile node's home agent and the corresponding node's home agent, and the mobile node is triggered by the mobile node's home agent and the correspondent node by the corresponding node's home agent to switch a tunnel, so that two endpoints of the tunnel are one of the selected proxy home agent addresses and the selected mobile node's care-of addresses.