Data retransmission method and data retransmission device under unbalanced antenna gain

Data retransmission method and data retransmission device under unbalanced antenna gain

  • CN 102,611,541 B
  • Filed: 12/26/2011
  • Issued: 05/03/2017
  • Est. Priority Date: 12/26/2011
  • Status: Active Grant
First Claim
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1. the unbalanced data repeating method of a kind of antenna gain, it is characterised in that methods described includes:

  • When determining that the antenna gain of transmitting terminal is uneven according to the Signal to Interference plus Noise Ratio SINR of the data flow of multi-antenna transmission, describedWhen the data flow of multi-antenna transmission employs identical modulation coding mode, the preferable space letter used in the multiple antennasRoad retransmits data;

    When the data flow of the multi-antenna transmission employs different modulation coding modes, in the multiple antennasData are retransmitted using preferable spatial sub-channel and/or retransmit data using single data stream mode;

    Wherein, the determination transmitting terminalAntenna gain imbalance be:

    Channel estimation is carried out according to the pilot frequency information that the transmitting terminal sends, the data flow correspondence of the multi-antenna transmission is calculatedSignal to Interference plus Noise Ratio SINR, when the difference between the SINR for being calculated exceeds given threshold, it is determined that it is uneven to there is antenna gain.

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