×

Multiple-input multiple-output (MIMO) transmission method and apparatus

  • US 9,485,759 B2
  • Filed: 10/28/2014
  • Issued: 11/01/2016
  • Est. Priority Date: 04/28/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. An uplink multiple-input multiple-output (MIMO) transmission method, comprising:

  • sending, by a user equipment (UE), first data to a NodeB in a first process in a hybrid automatic repeat request round trip time (HARQ_RTT);

    receiving, by the UE, an acknowledgement character related to the first data and returned by the NodeB; and

    determining, by the UE according to the acknowledgement character and a rank value to be used for next transmission, data transmission of the first process in a next HARQ_RTT;

    wherein the rank value to be used for next transmission comprises 1 or 2;

    wherein, when the first data is first stream data, determining, by the UE according to the acknowledgement character and a rank value to be used for next transmission, data transmission of the first process in a next HARQ_RTT, comprises;

    when the acknowledgement character indicates the first stream data is correct, and the rank value is 1, sending, by the UE, new first stream data in the first process in the next HARQ_RTT according to a single-stream transmission form corresponding to the rank value 1, and adopting a power offset newly scheduled in the first process; and

    when the acknowledgement character indicates the first stream data is correct, and the rank value is 2, sending, by the UE, new first stream data and new second stream data in the first process in the next HARQ_RTT according to a double-stream transmission form corresponding to the rank value 2, and adopting a power offset newly scheduled in the first process.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×