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MOBILE RADIO COMMUNICATION SYSTEM, COMMUNICATION APPARATUS APPLIED IN A MOBILE RADIO COMMUNICATION SYSTEM, AND MOBILE RADIO COMMUNICATION METHOD

  • US 20080076416A1
  • Filed: 10/31/2007
  • Published: 03/27/2008
  • Est. Priority Date: 04/23/1998
  • Status: Abandoned Application
First Claim
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1. A mobile radio communication method employed in a mobile radio communication system that comprises a first communication system employing a code division multiple access method including a transmitter for transmitting a first frame having a first frame-length (L1), and for transmitting a first frame, at a first transmission period which is defined as a period required to transmit a first specified number of the first frames;

  • and a receiver for receiving the frame transmitted by the transmitter; and

    a second communication system for transmitting a second frame having a second frame-length (L2), employing a GSM method where the second frame is transmitted at a second transmission period which is defined as a period required to transmit a second specified number of the second frames and not an integer-times of the first transmission period, the second communication system coexisting with the first communication system, the mobile radio communication method including the steps of;

    transmitting the first frame from the transmitter in the first communication system to the receiver in the first communication system, the transmitting step including setting a plurality of idle periods in the first transmission period;

    determining an idle-period interval, defined as an interval between corresponding portions in an idle period and in one of other idle periods, such that the idle-period interval corresponds to an odd-number times of a value obtained by dividing the second frame-length (L2) by a predetermined even number; and

    transmitting the first frames including the idle periods which are placed at the determined idle-period interval to the receiver in the first communication system; and

    observing a control data transmission channel in the second communication system during the idle periods at the receiver in the first communication system, wherein the idle periods are set fixedly in the first transmission period by the transmitter.

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