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Methods of communicating over time-division multiple-access (TDMA) communication systems with distinct non-time-critical and time-critical network management information transmission rates

  • US 5,982,761 A
  • Filed: 09/30/1996
  • Issued: 11/09/1999
  • Est. Priority Date: 09/30/1996
  • Status: Expired due to Term
First Claim
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1. A method of communicating over a channel group of a time-division multiple-access (TDMA) communication system, the channel group having a time-division multiplexed forward channel, wherein a central station transmits over said forward channel to a plurality of terminals, and transmissions by any one of the terminals to the central station occur over a return channel of said channel group, the method comprising:

  • periodically formatting at the central station login frames of N-type network control data, R-type network control data, protocol data and message data;

    periodically formatting message frames of data exclusive of N-type network control data and including R-type network control data, protocol data and message data;

    arranging in periodic repetition one of the login frames and a plurality of the message frames into a sequential grouping of frames forming a superframe, the superframes formed in each such periodic repetition being of identical length;

    transmitting the superframes at a predetermined rate over said forward channel, whereby the transmission rate of the superframes is less than the transmission rate of the sequential grouping of the frames within each superframe.

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