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Method and apparatus for transmitting uplink signals in wireless communication system

  • US 10,736,047 B2
  • Filed: 10/02/2019
  • Issued: 08/04/2020
  • Est. Priority Date: 01/03/2013
  • Status: Active Grant
First Claim
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1. A method for controlling uplink power at a user equipment (UE) in a carrier aggregation based wireless communication system, the method comprising:

  • configuring a first cell group and a second cell group, the first cell group consisting of a primary cell (PCell) and zero or more secondary cells (SCells), the second cell group consisting of one or more SCells;

    performing a procedure for transmitting a first physical uplink control channel (PUCCH) signal via a cell of the first cell group; and

    performing a procedure for transmitting a second PUCCH signal via a cell of the second cell group,wherein, based on that the first and second PUCCH signals is overlapped in time, and the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCH signal exceeds a maximum transmit power for the UE;

    the transmit power of one of the first and second PUCCH signals including uplink control information (UCI) having a lower priority is reduced, andwherein, based on the first and second PUCCH signals is overlapped in time, the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCH signal exceeds the maximum transmit power for the UE, and the first and second PUCCH signals include UCI having same priority;

    the transmission power of one of the first and second PUCCH signals transmitted in a cell having a lower cell priority is reduced.

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