Patent ID: 6314300
Filing Date: 2001-11-06
Classification: H04W

Abstract:
A mobile communication system, comprising:at least one mobile terminal device configured to carry out multiple simultaneous communication using a plurality of independent calls and having:more than one mobile terminal side call control units for controlling the plurality of independent calls independently at a mobile terminal side, said more than one mobile terminal side call control units having mutually different call identification information assigned thereto; anda mobile terminal side mobile terminal management unit for managing a communication state of the mobile terminal device with respect to each one of the plurality of independent calls independently while identifying each mobile terminal side call control unit which is currently in communication; anda network device having:a plurality of network side call control units for controlling the plurality of independent calls independently at a network side, said plurality of network side call control units having identical call identification information as corresponding ones of said more than one mobile terminal side call control units assigned thereto; anda network side mobile terminal management unit, provided in correspondence to the mobile terminal device, for managing the communication state of the mobile terminal device with respect to each one of the plurality of independent calls independently and correspondences between said plurality of network side call control units and the mobile terminal device while identifying each network side call control unit which is currently in communication.