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Method and apparatus for transmitting control information in wireless communication system

  • US 10,244,517 B2
  • Filed: 11/13/2012
  • Issued: 03/26/2019
  • Est. Priority Date: 11/13/2011
  • Status: Active Grant
First Claim
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1. A method for transmitting control information by a base station in a wireless communication system, the method comprising:

  • transmitting an enhanced physical downlink channel (E-PDCCH) to a user equipment, using at least one or more physical resource block (PRB) pairs among a plurality of PRB pairs for E-PDCCH transmission,wherein the plurality of PRB pairs include one or more PRB pair sets,wherein one or more initial values of a scrambling sequence used to generate a demodulation reference signal (DMRS) for the E-PDCCH are respectively configured for the one or more PRB pair sets,wherein, if the E-PDCCH is related to a localized transmission, each antenna port of plurality of antenna ports is allocated to enhanced control channel elements (eCCEs) in the one or more PRB pairs, andwherein, if the E-PDCCH is related to a distributed transmission, two antenna ports are allocated in an alternating manner to enhanced resource element groups (eREGs) in the one or more PRB pairs.

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