Patent ID: 6442616
Filing Date: 2002-08-27
Classification: H04L,H04W

Abstract:
A method for controlling communications in a communication network system formed by a plurality of computers, said plurality of computers being capable of communicating data with each other through a plurality of interconnected networks and including at least one mobile computer for communicating data while changing a location in the communication network system, the method comprising the steps of:(a) when the mobile computer is located within a home network of the mobile computer, carrying out a communication with the mobile computer by transferring communication data using a first location identifier specific to the mobile computer which is uniquely defined within own organization networks of the mobile computer; (b) when the mobile computer is located within an external own organization network, carrying out a communication with the mobile computer by routing communication data to the external own organization network using a third location identifier indicating a current visited location of the mobile computer in the communication network system which is uniquely defined over all the networks, and addressing the mobile computer within the external own organization network using the first location identifier; (c) when the mobile computer is located within an external other organization network, carrying out a communication with the mobile computer by routing communication data to the external other organization network using the third location identifier, and addressing the mobile computer within the external other organization network using a second location identifier assigned to the mobile computer at a time of moving outside the own organization networks which is uniquely defined over all the networks; and (d) managing an address information for the mobile computer within the own organization networks of the mobile computer, the address information containing a corresponding set of the first location identifier, the second location identifier and the third location identifier.