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MOBILE COMMUNICATION SYSTEM, CORE NETWORK APPARATUS, AND MOBILE COMMUNICATION TERMINAL

  • US 20080043666A1
  • Filed: 08/15/2007
  • Published: 02/21/2008
  • Est. Priority Date: 08/17/2006
  • Status: Active Grant
First Claim
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1. A mobile communication system comprising:

  • a plurality of base station apparatus each for forming a cell for connecting to a terminal through a wireless link;

    core network apparatus for separately managing an idle mode service area in which a terminal in an idle mode, in which the terminal is not communicating, can be connected, and an active mode service area in which a terminal in an active mode, in which the terminal is communicating, can be connected, said active mode service area being wider than said idle mode service area, with respect to respective cells of said base station apparatus, keeping itself connected to a terminal in the idle mode which is connected to the core network apparatus through a base station apparatus in said idle mode service area as long as said terminal in the idle mode is located in said idle mode service area, and keeping itself connected to a terminal in the active mode which is connected to the core network apparatus through a base station apparatus in said active mode service area as long as said terminal in the active mode is located in said active mode service area; and

    a terminal for, when moved beyond the border of the idle mode service area while in said idle mode, switching its connection from a core network apparatus which is managing the idle mode service area as a source to a core network apparatus which is managing the idle mode service area as a destination, and, when moved beyond the border of the active mode service area while in said active mode, switching its connection from a core network apparatus which is managing the active mode service area as a source to a core network apparatus which is managing the active mode service area as a destination.

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