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Delay insensitive base station-to-handset interface for radio telephone systems

  • US 5,590,173 A
  • Filed: 08/22/1995
  • Issued: 12/31/1996
  • Est. Priority Date: 08/05/1992
  • Status: Expired due to Term
First Claim
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1. A method of exchanging telephone signals between a basestation and a mobile cordless time division duplex (TDD) handset, comprising the steps of:

  • passing transmit signals as frequency division duplex (FDD) signals from said basestation to a remote antenna driver;

    converting said transmit signals to time division duplex (TDD) signals at said remote antenna driver;

    broadcasting said time division duplex signals to said handset;

    receiving at said remote antenna driver TDD receive signals broadcast by said handset, said TDD receive signals including bit clock timing;

    converting said TDD receive signals to FDD receive signals at said remote antenna driver;

    passing said FDD receive signals to said basestation; and

    deriving bit clock timing from said FDD receive signals at said basestation and employing said bit clock timing to process said FDD receive signals.

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