Downlink transmission method and eNodeB in multiple input multiple output system

  • US 8,724,653 B2
  • Filed: 10/15/2010
  • Issued: 05/13/2014
  • Est. Priority Date: 05/11/2010
  • Status: Active Grant
First Claim
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1. A downlink transmission method in a Multiple Input Multiple Output (MIMO) system, comprising:

  • obtaining Channel Quality Indication (COI) of a User Equipment (UE) to generate a channel condition indication value;

    obtaining channel Rank Indication (RI) of the UE to generate a channel correlation indication value;

    obtaining uplink Channel Impulse Response (CIR) estimation data of the UE to generate a channel variation state indication value;

    selecting by an eNobeB in a Multiple Input Mutilple Output (MIMO) system, a downlink transmission mode according to the channel condition indication value, the channel correlation indication value and the channel variation state indication value; and

    transmitting data to the UE in the selected downlink transmission mode.

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