Patent ID: 6771604
Filing Date: 2004-08-03
Classification: H04W

Abstract:
A method for location management of a mobile in a communications network, said communications network comprises an calling switch, a home switch, and a visiting switch, said home switch being the default network node for said mobile user and said visiting switch is a temporary network node for said mobile user because said mobile user has moved, and an optimal connection is desired between said calling switch and said visiting switch, said communications network comprising a plurality of interconnectable network nodes, said method comprising:setting up a connection path from said calling switch to said home switch of said mobile user; determining a location of said visiting switch; determining an optimal crossover node, said optimal crossover node being a network node located on said connection path; cranking back said connection path from said home switch until said optimal crossover node is reached; and setting up a connection between said crossover node and said visiting switch wherein said step of determining a optimal crossover node comprises the steps of: determining a shortest path between said first calling switch and said visiting switch along said plurality of interconnectable network nodes; determining a portion of said shortest path and said existing connection that coincide; and determining a network node on said coinciding portion of said shortest path and said existing connection that is farthest from said first calling switch, said network node being said optimal crossover node.