Patent ID: 9197305
Filing Date: 2015-11-24
Classification: H04B

Abstract:
1. A precoding control indication feedback method, comprising: calculating channel capacity values corresponding to precoding matrices in a precoding matrix set, wherein a channel capacity value corresponding to a precoding matrix; using a sequence number of a precoding matrix corresponding to a maximum channel capacity value as a precoding control indication (PCI) to be used; bearing the PCI to be used, a channel quality indication (CQI) indicating downlink channel quality, and ACK/NACK indicating a data decoding result over an uplink high-speed dedicated physical control channel (HS-DPCCH); and feeding back the PCI, the CQI and the ACK/NACK to a corresponding base station node to instruct the base station node to select a multiple input multiple output (MIMO) single-stream manner or a single-antenna manner to send data to be sent; wherein the precoding matrix set comprises antenna switching precoding matrices and original precoding matrices in a precoding protocol; and wherein the antenna switching precoding matrices enable a result of precoding processing performed by the base station node on the data to be sent to be one-dimensional data, thereby using the single-antenna manner to send the data to be sent.