Patent ID: 8345593

Claim:
A method for obtaining a home node address in a packet switched network comprising nodes, the method comprising the steps of: a) sending by a first server to a first home node of a home network a request containing information about a home address or a compressed value of the home address of a mobile node, said mobile node being physically distinct from said first server, to determine whether a binding with said home address indicating a registration of said mobile node at the first home node exists; b) receiving the request by the first home node, said first home node comprising a stored binding table; c) determining whether the binding with said home address exists in any home node of the home network, each of home nodes of the home network including a binding table; and d) receiving by the first server a reply comprising the address of the home node with said binding, if the home address of the mobile node is in the binding table of any of the home nodes in the home network, wherein, in case the compressed value of the home address is contained in the request, the home address of the mobile node is compressed by applying a hash function and the compressed home address is transported in an identifier field of a Home Agent Address Discovery request message.