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System-wide uplink band gain control in a distributed antenna system (DAS), based on per-band gain control of remote uplink paths in remote units

  • US 9,788,279 B2
  • Filed: 08/16/2016
  • Issued: 10/10/2017
  • Est. Priority Date: 09/25/2014
  • Status: Active Grant
First Claim
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1. A wireless communication system, comprising:

  • a central unit configured to;

    receive at least one downlink communications signal from a network;

    distribute the received at least one downlink communications signal to a plurality of remote units;

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

    combine the received plurality of uplink communications signals into a combined uplink communications signal in a central uplink path; and

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

    the plurality of remote units each comprising;

    a plurality of remote uplink band power measurement circuits each coupled to a remote uplink path among a plurality of remote uplink 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 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 path;

    each remote unit configured to;

    receive the at least one downlink communications signal from the central unit;

    distribute the received at least one downlink communications signal to at least one client device;

    receive at least one uplink communications signal among the plurality of uplink communications signals in at least one remote uplink path from the at least one client device; and

    distribute the received at least one uplink communications signal among the plurality of uplink communications signals to the central unit; and

    a central controller configured to;

    for each uplink band in the wireless communication system;

    (i) receive the remote uplink band power measurement for each remote uplink path for the uplink band;

    (ii) determine if an uplink gain of the remote uplink paths of the plurality of remote uplink paths of the uplink band should be adjusted; and

    (iii) if the uplink gain of the remote uplink paths of the plurality of remote uplink paths of the uplink band should be adjusted;

    direct a remote uplink gain control circuit for each remote uplink path of the uplink band to adjust the uplink gain of the respective remote uplink path by a defined remote uplink band gain level.

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