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Efficient frequency division duplex communication system with interleaved format and timing adjustment control

  • US 5,689,502 A
  • Filed: 06/05/1995
  • Issued: 11/18/1997
  • Est. Priority Date: 06/05/1995
  • Status: Expired due to Term
First Claim
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1. A method of duplex communication, comprising the steps oftransmitting, over a first frequency band of a plurality of frequency bands, a control pulse preamble from a user station to a base station,receiving, during a first preamble interval, said control pulse preamble at said base station,transmitting, over a second frequency band of said plurality of frequency bands and during a base message interval following said first preamble interval, a base-to-user message from said base station to said user station,receiving said base-to-user message at said user station,transmitting, over said first frequency band, a user-to-base message from said user station to said base station, andreceiving, during a user message interval following said base message interval, said user-to-base message at said base station.

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