Method for transmitting and receiving a signal to protect against erroneous feedback information

摘要

A method for providing precoding weights for data symbols of data control subframes includes generating a downlink frame having control subframes which individually correspond to one of a plurality of downlink data subframes, and inserting weight information into each of the control subframes, such that the weight information is to be applied to data symbols present in the corresponding one of the data subframes. The method further includes transmitting the control subframes and the inserted weight information to a receiving device.

主权项

1. A method for transmitting signals at a base station (BS) to a user equipment (UE) configured to operate in a multi input multi output (MIMO) mode, the method comprising:
receiving, by the BS from the UE, first precoding information for use by the BS in a data transmission; transmitting, by the BS to the UE, downlink control information through one of a plurality of downlink control channel candidates for the UE within a subframe, wherein the transmitted downlink control information corresponds to a physical downlink shared channel and includes second precoding information determined by the BS; determining whether to precode downlink data of the physical downlink shared channel based on the first precoding information received from the UE or based on the second precoding information determined by the BS; precoding, by the BS, the downlink data of the physical downlink shared channel, wherein the downlink data of the physical downlink shared channel is precoded based on the second precoding information determined by the BS when the first and second precoding information indicates different precoding weight parameters, and the downlink data of the physical downlink shared channel is precoded based on the first precoding information received from the UE when the first and second precoding information indicates a same precoding weight parameter; and transmitting, by the BS to the UE, the precoded downlink data through the physical downlink shared channel.