Patent ID: 8073459

Claim:
A wireless cellular telecommunication system having one or a plurality of mobile terminals, one or a plurality of nodes and a centralizing device, the mobile terminal, in a wireless area, communicates with the node, each of the nodes manning a cell, the centralizing device being connected to the nodes, the wireless area including the cell or cells, the wireless cellular telecommunication system comprising: means for checking, at the mobile terminal, if the wireless area that the mobile terminal enters is not in a first list including information related to stored wireless areas, wherein the first list includes the information related to the wireless areas as a form of identifiers for identifying the wireless areas; means for transmitting a location area update message, at the mobile terminal, in a case where the wireless area is not in the first list, the location area update message including information related to a visited wireless area which it has previously moved into; means for transmitting a response message, at the centralizing device, as a response to the location area update message, the response message comprising a second list including updated information related to wireless areas, wherein the second list includes the information related to the wireless areas as a form of identifiers for identifying the wireless areas; and means for obtaining the second list from the received response message at the mobile terminal.