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CDMA transceiver used in mobile communication system

  • US 6,289,009 B1
  • Filed: 07/21/1998
  • Issued: 09/11/2001
  • Est. Priority Date: 07/22/1997
  • Status: Expired due to Fees
First Claim
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1. A CDMA transceiver used in a mobile station in a mobile communication system comprising a base station and one or more mobile stations for communication using a direct spread code division multiple access system, whereinthe CDMA transceiver determines a mean transmission power on the basis of a transmission power control signal received from the base station, the mean transmission power being equal to the transmission power when transmission is “

  • on”

    multiplied by a transmission “

    on”

    time ratio;

    the CDMA transceiver changes the transmission “

    on”

    time ratio of a transmitting amplifier based on the determined mean transmission power;

    the mobile station transmits data in frames of a predetermined time length, the frames each having N (N being an interger equal to 2 or greater) slots of a predetermined time length, the transceiver comprising a controller which on-off controls the transmission of the data to change a transmission on-off ratio for each slot; and

    the controller controls the transmission to be performed only in one slot when the mean transmission power is lower than 1/N of a maximum transmission power of the transmitting amplifier, and in m (m being an integer in a range between 2 and N inclusive) slots when the mean transmission power is higher than 1/N of the maximum transmission power of the transmitting amplifier.

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