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Simultaneous transmission in multiple timing advance groups

  • US 10,206,181 B2
  • Filed: 01/29/2013
  • Issued: 02/12/2019
  • Est. Priority Date: 01/30/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • performing by one or more processors in a user equipment device,receiving a Physical Downlink Control Channel (PDCCH) order to initiate a random access procedure on a serving cell;

    identifying a Physical Uplink Control Channel (PUCCH) transmission for a different serving cell other than the serving cell;

    transmitting a Physical Random Access Channel (PRACH) transmission to the serving cell in a subframe;

    transmitting the PUCCH transmission to the different serving cell in the subframe; and

    scaling down the PUCCH transmission power level during a portion of the subframe having overlapping PRACH and PUCCH transmissions so that a combined transmission power level for the PRACH transmission and the PUCCH transmission during the overlapping portion does not exceed a maximum transmission power for the user equipment device.

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