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Transmission power in a multicarrier wireless device

  • US 8,599,785 B1
  • Filed: 08/06/2013
  • Issued: 12/03/2013
  • Est. Priority Date: 01/25/2012
  • Status: Active Grant
First Claim
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1. A method for use in a wireless device, the method comprising:

  • a) receiving at least one message causing configuration of;

    i) a plurality of cells comprising a primary cell and at least one secondary cell; and

    ii) a plurality of cell groups comprising a primary cell group and a secondary cell group;

    b) receiving a command causing transmission of a random access preamble on a secondary cell, said random access preamble transmitted in parallel with at least one of the following uplink transmissions;

    i) a first packet on a control channel of said primary cell; and

    ii) at least one second packet on at least one data channel of said plurality of cells;

    c) determining a transmission power for said random access preamble; and

    d) when a total calculated transmission power exceeds a predefined value, adjusting transmission power of one or more of said at least one uplink transmission according to a predefined rule considering a higher priority for said transmission power compared with a transmission power priority of said first packet and said at least one second packet.

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