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Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit

  • US 10,397,929 B2
  • Filed: 06/05/2017
  • Issued: 08/27/2019
  • Est. Priority Date: 08/29/2014
  • Status: Active Grant
First Claim
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1. A wireless communication system, comprising:

  • a central unit configured to;

    receive a plurality of uplink communications signals from a plurality of remote units; and

    distribute the received plurality of uplink communications signals to a network;

    the plurality of remote units each configured to;

    receive a plurality of uplink band communications signals from at least one client device;

    combine the received plurality of uplink band communications signals into a combined uplink communications signal; and

    distribute the received combined uplink communications signal to the central unit;

    each of the plurality of remote units comprising;

    a plurality of remote uplink band power measurement circuits each coupled to a remote uplink band path among a plurality of remote uplink band paths each carrying at least one uplink band communications signal in a remote unit, each remote uplink band power measurement circuit among the plurality of remote uplink band power measurement circuits configured to;

    measure a remote uplink band power of an uplink band communications signal in the remote uplink band path in the remote unit; and

    provide a remote uplink band power measurement indicative of the measured remote uplink band power of the uplink band communications signal in the remote uplink band path; and

    a remote combined uplink power measurement circuit coupled to a remote combined uplink path in the remote unit carrying a combined uplink communications signal comprised of a combined plurality of the uplink band communications signals, the remote combined uplink power measurement circuit configured to;

    measure a remote combined uplink power of the combined uplink communications signal in the remote combined uplink path; and

    provide a remote combined uplink power measurement indicative of the measured remote combined uplink power of the combined uplink communications signal in the remote combined uplink path; and

    at least one remote controller configured to, for each of the plurality of remote units;

    (a) receive the remote combined uplink power measurement for the remote unit;

    (b) receive an individual remote uplink band power measurement for each remote uplink band path of the plurality of remote uplink band paths in the remote unit; and

    (c) determine if the remote combined uplink power measurement is greater than a remote combined uplink threshold power level for the remote unit;

    (d) if the remote combined uplink power measurement is greater than the remote combined uplink threshold power level for the remote unit, in response;

    identify high power remote uplink band paths among the plurality of remote uplink band paths; and

    direct a remote combined uplink band gain control circuit for at least one remote uplink band path identified as a high power remote uplink band path, to reduce an uplink band gain of the respective remote uplink band path by a defined remote uplink band gain level.

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