Method and system for performing handoff in wireless networks

A method for a handoff process in a wireless communication network, the method comprising:

• providing an access terminal, the access terminal being configured to perform wireless IP communication;
• providing a first network access for the access terminal by a first connectivity node and a first access node;
• assigning a plurality of addresses for the access terminal, the plurality of addresses including a first address and a second address, the first address being associated with a first priority level, the second address being associated with a second priority level;
• storing the plurality of addresses by a home agent;
• performing a handoff process for switching from the first connectivity node to a second connectivity node;
• wherein the handoff process comprises:
• determining the first priority level and the second priority level by the home agent, the first priority level being higher than the second priority level;
• performing a first binding update for the first address between the home agent and a first access node;
• performing a second binding update for the second address between the home agent and the access terminal;
• initiating a timer by the second connectivity node;
• sending a handoff acknowledge message from the second connectivity node to the first connectivity node if a handoff confirm message is not received by the second connectivity node before an expiration of the timer.

A system for wireless communication, the system comprises:

• an access terminal, the access terminal being configured to perform wireless IP communication;
• a first access node, the first access node being configured for providing a first wireless connection for the access terminal;
• a first connectivity node for providing a first network access for the access terminal;
• a home agent, the home agent being configured to store a plurality of addresses for the access terminal, the plurality of addresses including a first address and a second address, the first address being associated with a first priority level, the second address being associated with a second priority level;
• wherein:
• the access node is configured to initiate a handoff process for switching from the first connectivity node to a second connectivity node;
• the home agent is configured to determine the first priority level and the second priority level by the home agent, the first priority level being higher than the second priority level;
• the home agent is configured perform a first binding update for the first address with the first access node;
• the home agent is configured to perform a second binding update for the second address with the access terminal;
• the second connectivity node is configured to provide a second network access for the access terminal.