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Transmit power control in multicarrier communications

  • US 9,615,339 B2
  • Filed: 11/01/2015
  • Issued: 04/04/2017
  • Est. Priority Date: 04/17/2012
  • Status: Active Grant
First Claim
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1. A wireless device comprising:

  • one or more processors; and

    memory storing instructions that, when executed by the one or more processors, cause the wireless device to;

    receive at least one control message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

    receive a control packet comprising an uplink grant to transmit a first packet via a secondary cell of the at least one secondary cell;

    compute transmission power of the first packet based on, at least in part, a parameter calculated by accumulation of an initial value and at least one power control value corresponding to a sequence of subframes, wherein the accumulation is reset responsive to;

    receiving, via a higher layer, a power information element;

    orreceiving a random access response, wherein the random access response corresponds to a random access preamble transmitted on the secondary cell; and

    transmit the first packet using radio resources indicated by the uplink grant.

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