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Radio telephone system supporting busy and out-of-range function

  • US 5,203,013 A
  • Filed: 09/10/1990
  • Issued: 04/13/1993
  • Est. Priority Date: 09/10/1990
  • Status: Expired due to Term
First Claim
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1. In a radio telephone communication system having:

  • a base station with at least one frequency agile transceiver capable of time division duplex operation on at least one radio frequency channel for facilitating communication with at least one radio telephone on the at least one radio frequency channel, a method of determining acquisition status of the at least one frequency agile transceiver in the base station comprising the steps of;

    at a radio telephone;

    providing an indication representing a base station busy status when one of;

    requesting a communication link fails and bidirectional time division duplex communication exists on the at least one radio frequency channel; and

    requesting a communication link fails and unidirectional time division duplex communication exists on the radio frequency channel and the unidirectional time division duplex communication originates from the base station.

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