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Method and apparatus for establishing a mapping between enhanced downlink control channel resource and antenna port

  • US 10,009,880 B2
  • Filed: 03/13/2015
  • Issued: 06/26/2018
  • Est. Priority Date: 09/14/2012
  • Status: Active Grant
First Claim
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1. A method for establishing a mapping between an enhanced downlink control channel resource and an antenna port, comprising:

  • establishing a mapping between each resource element carrying control data in an enhanced downlink control channel resource and an antenna port, whereinthe enhanced downlink control channel resource comprises multiple resource block pairs (PRB pairs), each of the multiple PRB pairs comprises multiple orthogonal frequency division multiplexing (OFDM) symbols in a time domain, and each of the multiple OFDM symbols corresponds to an OFDM symbol index, whereineach of the multiple PRB pairs further comprises multiple subcarriers in a frequency domain, and each of the multiple subcarriers corresponds to a subcarrier index, whereinresource elements carrying control data in odd-indexed OFDM symbols and odd-indexed subcarriers being mapped to a first antenna port,resource elements carrying control data in odd-indexed OFDM symbols and even-indexed subcarriers being mapped to a second antenna port,resource elements carrying control data in even-indexed OFDM symbols and even-indexed subcarriers being mapped to the first antenna port, andresource elements carrying control data in even-indexed OFDM symbols and odd-indexed subcarriers being mapped to the second antenna port; and

    sending, according to a reference signal corresponding to the first antenna port or the second antenna port, the control data carried by the resource element, wherein establishing the mapping between each resource element in the enhanced downlink control channel resource and the first antenna port or second antenna port is performed by each of the multiple PRB pairs, wherein the multiple PRB pairs have a same mapping between the resource element and the first antenna port or second antenna port.

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