Information reporting and indicating method, terminal equipment and network equipment
A technology of network equipment and terminal equipment, which is applied in the field of information reporting, terminal equipment and network equipment, and indication methods. It can solve problems such as the inability to determine the precoding matrix, and achieve the effect of improving throughput and optimizing design.
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[0029] Terminal devices and network devices communicate based on multi-antenna technology, the terminal device can feed back the CSI to the network device based on the disparity of the upper and downlink channels so that the network device determines the precoding matrix for downlink transmission. Specifically, the terminal device can transmit a detection reference signal (SRS, SOUNDING REFERENCE SIGNAL) to the network device, and the network device can determine the uplink channel information based on the SRS, and use the mutuality of the uplink channel and the downlink channel to determine the downlink channel information, and then determine for use Downlinking precoding matrix.
[0030] However, in the FDD system, the mutuality of the upper and downlink channels is only partial interaction, ie at the angle domain, the left corner of the downlink channel is equal to the arrival angle of the uplink channel, and the upper and downlink channel has the same multipath. Delay and mult...
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