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Uplink transmissions in a wireless device

  • US 8,971,280 B2
  • Filed: 04/14/2013
  • Issued: 03/03/2015
  • Est. Priority Date: 04/20/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • a) receiving, by a wireless device, at least one radio resource control message from a base station, said at least one radio resource control message to cause in said wireless device;

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

    ii) assignment of each of said at least one secondary cell to a cell group in a plurality of cell groups, each of said plurality of cell groups comprising a subset of said plurality of cells;

    b) receiving, by said wireless device, a control command causing said wireless device to transmit a random access preamble on a random access channel of a first cell in a first cell group in said plurality of cell groups; and

    c) transmitting, by said wireless device, overlapping in time with transmission of said random access preamble, an uplink packet on a first subframe of said first cell; and

    wherein transmission power of said uplink packet is calculated considering;

    i) a maximum allowable transmission power in said first subframe of said first cell; and

    ii) transmission power of said random access preamble.

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