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Method and apparatus for acquiring control information in wireless communication system

  • US 9,401,794 B2
  • Filed: 11/07/2012
  • Issued: 07/26/2016
  • Est. Priority Date: 11/08/2011
  • Status: Active Grant
First Claim
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1. A method for acquiring control information of a user equipment (UE) in a wireless communication system, the method comprising:

  • receiving Enhanced-Physical Downlink Control Channel (E-PDCCH) configuration information from a base station (BS); and

    transmitting an acknowledgement/negative acknowledgment (ACK/NACK) response to the E-PDCCH configuration information,wherein, during a predetermined time after the transmission of the ACK/NACK response, the user equipment (UE) performs blind decoding for downlink control information (DCI) in a common search space of a physical downlink control channel (PDCCH) resource region and in a search space of an E-PDCCH resource region,wherein the DCI is received through the search space of the E-PDCCH resource region, andwherein the predetermined time starts from a next subframe of a subframe in which the ACK/NACK response is transmitted, and ends at a subframe in which a response to the received DCI is transmitted.

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