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Method and apparatus for monitoring control channel

  • US 9,609,675 B2
  • Filed: 01/16/2013
  • Issued: 03/28/2017
  • Est. Priority Date: 01/16/2012
  • Status: Active Grant
First Claim
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1. A method for monitoring an enhanced physical downlink control channel (EPDCCH) in a subframe including a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time division duplex (TDD)-based wireless communication system, the method comprising:

  • receiving a primary synchronization signal (PSS) in 6 resource blocks (RBs) and on a 3rd OFDM symbol of the subframe;

    monitoring, by a wireless device, the EPDCCH in the 6 RBs and on at least one OFDM symbol located after the 3rd OFDM symbol where the PSS is received; and

    receiving a demodulation reference signal (DMRS) to demodulate the EPDCCH,wherein when the DMRS is received in the 6 RBs and on the subframe where the PSS is received and when the subframe corresponds to a TDD-based special subframe, a location of the DMRS is changed from a 3rd to a 6th symbol and from a 4th to a 7th symbol.

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