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Method and apparatus for transmitting uplink signals in wireless communication system

  • US 10,531,398 B2
  • Filed: 11/20/2018
  • Issued: 01/07/2020
  • Est. Priority Date: 01/03/2013
  • Status: Active Grant
First Claim
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1. A method for transmitting physical random access preamble channels (PRACHs) by a user equipment (UE) to in a wireless communication system, the method comprising:

  • transmitting a first PRACH for a first cell group; and

    transmitting a second PRACH for a second cell group such that the first PRACH and the second PRACH overlap in time,wherein the first PRACH is transmitted at a first PRACH power and the second PRACH is transmitted at a second PRACH power, the second PRACH power being a reduced second PRACH power level so that a sum of the first PRACH power and the second PRACH power does not exceed a total PRACH power limit, andwherein the first cell group comprises a primary cell (PCell), and the second cell group comprises at least one secondary cell (SCell).

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