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Cellular radio system having reduced handover disruption and method for use in such a system

  • US 5,146,609 A
  • Filed: 02/27/1990
  • Issued: 09/08/1992
  • Est. Priority Date: 02/27/1990
  • Status: Expired due to Term
First Claim
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1. In a cellular radio communication system covering a plurality of cells and having a plurality of base station radios each serving a respective cell, a population of user radios which may communicate on radio channels with the plurality of base station radios in the plurality of cells, and a central controller linked to the plurality of base station radios for communicating messages between the central controller and the population of user radios, handover means for causing one of the user radios to cease communicating on a first channel in a first cell and to begin communicating on a second channel in a second cell adjacent the first cell, the handover means comprising:

  • fill-in means for generating a fill-in message extrapolated from a message of the one of the user radios on the first channel and for communicating the fill-in message when the one of the user radios has ceased communicating on the first channel;

    validating means, responsive to signals on the second channel, for validating when the one of the user radios begins communicating on the second channel in the second cell; and

    terminating means, responsive to the validating means, for terminating the fill-in message when the one of the user radios begins communicating on the second channel in the second cell, thereby reducing handover disruption.

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