Communications system

  • US 5,969,837 A
  • Filed: 07/01/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 12/15/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A communications station comprising:

  • a base unit comprising;

    a communications interface for communicating with plural wireless communications networks;

    wherein the plural wireless communications networks comprise at least two communications networks selected from the group consisting of cellular telephone networks cordless telephones, wide area data networks wireless local area networks, personal communications systems, personal communications networks, paging/messaging networks and satellite mobile systems;

    a received communications combiner for combining received analog communications signals received from said plural wireless communications networks into a single radio frequency analog output;

    a transmit communications splitter for splitting previously combined transmit analog communications signals to be transmitted to said plural wireless communications networks into plural radio frequency analog outputs;

    at least one fiberoptic transmitter receiving said single radio frequency analog output and providing a corresponding optical output; and

    at Least one fiberoptic receiver receiving an optical input and providing an RF analog output containing previously combined transmit analog communications signals;

    a plurality of remote units, each comprising;

    plural antennas for communicating with communicators along plural wireless communications networks;

    a received communications splitter for splitting previously combined received analog communications signals from said base unit and supplying them to said plural antennas;

    a transmit communications combiner for combining transmit analog communications signals from said plural antennas into a combined radio frequency analog output;

    a fiberoptic transmitter receiving said combined radio frequency analog output and providing a corresponding optical output; and

    a fiberoptic receiver receiving an optical input and providing an RF analog output to said received communications splitter containing previously received transmit analog communications signals;

    a first optical fiber connecting each fiberoptic transmitter of said base unit with a corresponding fiberoptic receiver in a corresponding remote unit; and

    a second optical fiber connecting each fiberoptic transmitter of a remote unit with a corresponding fiberoptic receiver in said base unit; and

    wherein a low frequency control signal is multiplexed by said communications interface onto said optical fiber for providing loop back alarm status of each remote unit and for providing control signals thereto, which control amplifier gain and balance thereof.

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