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Method and apparatus for a radio system using variable transmission reservation

  • US 5,502,722 A
  • Filed: 08/01/1994
  • Issued: 03/26/1996
  • Est. Priority Date: 08/01/1994
  • Status: Expired due to Fees
First Claim
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1. A method of operating a radio communication system, the radio communication system having first and second transceivers, the method comprising the steps of:

  • selecting a sequence of communication channels;

    selecting a reservation channel from among the sequence of communication channels;

    providing a channel hop period for channel hopping on the sequence of communication channels;

    at the first transceiver;

    cycling through each channel of the sequence of communication channels within a communication slot, while channel hopping at an interval equal to the channel hop period; and

    reserving a communication slot of a slot duration less than the channel hop period for a subsequent cycle through the sequence of communication channels by transmitting a reservation signal for the slot duration when on the reservation channel;

    at the second transceiver;

    monitoring the reservation channel to detect an open communication slot indicated by an absence of a reservation signal on the reservation channel, including the steps of;

    monitoring the reservation channel for a monitor period of at least a hop cycle period to detect an open communication slot having a duration of at least the channel hop period; and

    when an open communication slot is not detected within the monitor period, monitoring the reservation channel to detect an open communication slot having a duration less than the channel hop period; and

    establishing communications in the open communication slot on the sequence of communication channels, when an open communication slot exists.

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