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Downlink transmission method and user terminal equipment

  • US 10,257,841 B2
  • Filed: 03/18/2014
  • Issued: 04/09/2019
  • Est. Priority Date: 09/03/2013
  • Status: Active Grant
First Claim
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1. A method for downlink transmission, comprising:

  • reporting, by a user equipment (UE) to a base station (BS), downlink channel quality indicator (CQI) information based on a backward compatible CQI table or a CQI table which supports 256QAM modulation, wherein the backward compatible CQI table or the CQI table which supports 256QAM modulation is selected based on a state of the UE; and

    receiving, by the UE from the BS, downlink scheduling information configured based on the CQI information;

    receiving, by the UE from the BS, downlink data based on modulation coding scheme (MCS) information of downlink control information (DCI) included in the downlink scheduling information; and

    processing, by the UE, the MCS information based on a backward compatible MCS table or a MCS table which supports 256QAM modulation,wherein the CQI table which supports 256QAM modulation is generated by changing at least one CQI item in the backward compatible CQI table.

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