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Method and apparatus for receiving a timing advance command in a wireless communication system

  • US 9,143,970 B2
  • Filed: 01/07/2011
  • Issued: 09/22/2015
  • Est. Priority Date: 01/07/2010
  • Status: Active Grant
First Claim
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1. A method of receiving a timing advance command by a user equipment in a wireless communication system, the method comprising:

  • receiving information related to a time alignment group through a radio resource control (RRC) signaling from a base station before receiving the timing advance command;

    receiving the timing advance command corresponding to the time alignment group from the base station; and

    applying the timing advance command to at least one serving cell belonging to the time alignment group,wherein the timing advance command is received together with a time alignment group identifier after receiving the information related to the time alignment group through the RRC signaling,wherein the time alignment group identifier identifies the time alignment group to which the timing advance command is applied, andwherein the time alignment group identifier is included in a medium access control (MAC) control element (CE).

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