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METHOD AND APPARATUS FOR CONTROLLING RANDOM ACCESS IN WIRELESS COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION

  • US 20140341011A1
  • Filed: 08/01/2014
  • Published: 11/20/2014
  • Est. Priority Date: 04/05/2011
  • Status: Active Grant
First Claim
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1. A method for controlling a random access procedure by a terminal in a wireless communication system, the method comprising:

  • transmitting a random access preamble to a base station;

    determining whether a number of transmissions of the random access preamble reaches a predetermined value;

    determining whether the random access preamble is transmitted on a primary cell or a secondary cell if the number of transmissions of the random access preamble reaches the predetermined value;

    indicating the random access problem to upper layers if the random access preamble is transmitted on the primary cell; and

    determining that the random access procedure is completed if the random access preamble is transmitted on the secondary cell.

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