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COMMUNICATION SYSTEM

  • US 20120163226A1
  • Filed: 03/02/2012
  • Published: 06/28/2012
  • Est. Priority Date: 09/04/2009
  • Status: Active Grant
First Claim
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1. A transmitter comprising:

  • a transmission module configured to transmit a signal to a communication partner;

    a reception module configured to receive a positive acknowledge transmitted by the communication partner when the signal is successfully received by the communication partner;

    a timer configured to measure a time elapsed from the reception of the positive acknowledge by the reception module;

    a storage configured to store the order of change of a plurality of frequency channels to be used for transmission by the transmission module; and

    a controller configured to control the transmission module to change the frequency channel based on the change order when the positive acknowledge is not received even after the time measured by the timer exceeds a first period.

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