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Wireless communications protocol

  • US 6,169,730 B1
  • Filed: 05/15/1998
  • Issued: 01/02/2001
  • Est. Priority Date: 05/15/1998
  • Status: Expired due to Term
First Claim
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1. A method for implementing a time division multiple access protocol for digital communications between a radio transceiver and a repeater, the method comprising the steps of:

  • a) dividing a communication into a plurality of frames having a predetermined length of time;

    b) dividing each frame into;

    i) a plurality of downlink slots, each downlink slot for containing a transmission from the repeater to the transceiver;

    ii) a plurality of uplink slots, each uplink slot for containing a transmission from the transceiver to the repeater;

    iii) wherein each of the downlink and uplink slots are divided into;

    (a) a bit synchronization for timing acquisition field;

    (b) a slot field for slot acquisition;

    (c) a header field for control information, wherein the header field is further divided into;

    (i) a message type field for identifying a message type;

    (ii) a message subtype field for identifying a point-to-point mode of communication;

    (iii) an user-programmable ID field for identifying sending/receiving transceivers;

    (iv) a reserved field for providing subsequent additional protocol information;

    (v) a first modifier field for identifying communication channels;

    (vi) a second modifier field for identifying available uplink slots and current active slots;

    (d) a data field for digital audio and digital data information;

    (e) a 16-bit CRC field for error detection;

    (f) a slot gap field for accommodating clock inaccuracies; and

    c) transmitting the communication.

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