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TDMA communications apparatus having adaptive burst duration

  • US 4,686,672 A
  • Filed: 10/10/1984
  • Issued: 08/11/1987
  • Est. Priority Date: 10/13/1983
  • Status: Expired due to Term
First Claim
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1. A time division multiple access (TDMA) communications system for enabling each of a plurality of stations served by said system to adaptively vary its own burst duration in a TDMA frame in response to their own instantaneous communications traffic needs, said system comprising:

  • transmit buffer memory means for temporarily storing data to be transmitted;

    data assembling means coupled to said buffer memory means for assembling an output of said transmit buffer memory means into a predetermined burst format;

    burst position control means coupled to control said data assembly means for shifting said assembled burst to a desired position in said TDMA frame;

    transmitting means for transmitting said assembled burst into said format to a satellite;

    receiving means for receiving all the bursts contained in said TDMA frames;

    burst duration detector means coupled to an output of said receiving means for determining a duration of all of said received bursts and a duration of a burst at the head of said TDMA frame;

    detector means for detecting when said transmitted burst is at the head of said TDMA frame; and

    channel controller means responsive to an output of said detector means and to an output of the burst duration detector means for causing the burst position control means to shift said transmitted burst at each predetermined period of time while causing the burst assembling device to vary the duration of said transmitted burst.

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