Patent ID: 8654738

Claim:
A method of supporting flow mobility of a mobile node in a local mobility anchor (LMA), the method comprising: generating a unique flow identifier (ID) for a flow of the mobile node, and using the flow ID as an extension field of a binding cache entry (BCE) to identify the flow; updating the binding cache entry (BCE) using the flow identifier when the flow of the mobile node moves from a first mobile access gateway (MAG) to a second MAG; sending a first message for requesting binding registration of the flow to the second MAG; and sending a second message for requesting binding de-registration of the flow to the first MAG; wherein each of the first message and the second message is a proxy binding acknowledgement (PBA) message including the flow ID, home network prefix (HNP) identification information, a first flag and a second flag, and wherein the first flags of the first and second messages have the same value, and the second flags of the first and second messages have different values.