Method and device for terminal to transmit/receive signal in wireless communication system having carrier aggregation technique applied thereto

  • US 9,363,798 B2
  • Filed: 03/07/2012
  • Issued: 06/07/2016
  • Est. Priority Date: 03/11/2011
  • Status: Active Grant
First Claim
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1. A method of a user equipment transceiving a signal to and from an eNode B in a wireless communication system having a carrier aggregation technique applied thereto, the method comprising:

  • performing a carrier sensing procedure with respect to an unlicensed frequency band;

    configured the unlicensed frequency band as a specific component carrier upon sensing that the unlicensed frequency band is in an idle state;

    receiving a preamble in a subframe from the eNode B through the specific component carrier;

    determining the subframe as an uplink subframe or a downlink subframe based on the preamble, wherein the preamble includes information indicating the uplink subframe or the downlink subframe; and

    performing transmission of an uplink signal in the determined uplink subframe to the eNode B through the specific component carrier, or reception of a downlink signal in the determined downlink subframe from the eNode B through the specific component carrier according to a result of determining.

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