| 摘要 |
<p>Methods and apparatus for enhancing Mobile IP (MIP) signalling and to support the use of a novel proxy Co-located Care-of Address (PCCoA) are described. The enhanced MIP signalling adds the ability for the Mobile Node (MN) (504) to acquire a MN specific Foreign Agent (FA) (505) CoA that provides the MN (504) with a topologically correct local address yet whose tunnel encapsulation/decapsulation is provided by the FA (505). This address is called a proxy CCoA (PCCoA) (2116) and the associated processing in the MN (504) and FA (505) is called Proxy CCoA tunneling. This capability is applicable to any access technology but is especially useful for wireless systems where the access bandwidth is expensive and when point-to-point link-layer connectivity exists between the MN (504) and the FA (505). A method is supported for reverse tunneling and smooth hand-off extensions based on the PCCoA that enables inter-FA forwarding even for CCoAs.</p> |
