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Communication system and mobile communication terminal

  • US 20060211428A1
  • Filed: 11/19/2005
  • Published: 09/21/2006
  • Est. Priority Date: 03/17/2005
  • Status: Abandoned Application
First Claim
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1. A communication system, in which a base station which assigns a channel for data communication and a mobile communication terminal which requests assignment of the channel are connected by means of a radio communication path;

  • wherein the base station comprises;

    a request receiving unit which receives an assignment request for the channel specifying a transmission rate, transmitted by the mobile communication terminal;

    an assigning unit which assigns the channel having a transmission rate determined based upon the transmission rate specified in the assignment request and available channel resources, in response to the assignment request received by the request receiving unit;

    an assignment reporting unit which transmits information including the transmission rate of the channel assigned by the assigning unit, to the mobile communication terminal;

    a release request receiving unit which receives a release request for the channel assigned by the assigning unit, from the mobile communication terminal; and

    a releasing unit which releases the channel received by the release request receiving unit; and

    the mobile communication terminal comprises;

    a request transmitting unit which transmits the assignment request for a channel designating the transmission rate, to the base station;

    an assignment report receiving unit which receives information including the transmission rate of the assigned channel, from the base station;

    a release request transmitting unit which transmits the release request for the channel received by the assignment report receiving unit, to the base station; and

    a channel control unit which judges whether or not the transmission rate received by the assignment report receiving unit can be accepted, and if it cannot be accepted, controls the release request transmitting unit so as to transmit the release request for the assigned channel, and controls the request transmitting unit so as to transmit the assignment request for the channel specifying the transmission rate, thereby issuing a repeat channel assignment request.

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