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Method and apparatus for controlling operation of a portable or mobile battery-operated radios

  • US 5,787,338 A
  • Filed: 03/14/1997
  • Issued: 07/28/1998
  • Est. Priority Date: 05/18/1995
  • Status: Expired due to Term
First Claim
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1. In a trunked radio communications system where trunked radio communications over radio frequency communications channels are coordinated from a base station having an associated geographical coverage area, a method for optimizing the performance of a portable or mobile battery-operated radio comprising the steps of:

  • establishing operating parameter values of the radio at various performance levels corresponding to particular radio operating conditions;

    determining at the radio a current radio operating condition; and

    adjusting the radio operating parameter value based on the determined radio operating condition,wherein one of the radio frequency communication channels is a control channel divided in time into slots, a radio obtains access to transmit to the base station during one or more predetermined time slots by transmitting a channel request message, and the operating parameter is a number of slots used for making a channel request such that as the current radio operating condition determined by the radio changes, the radio adjusts the number of slots.

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