| CPC H04B 7/0626 (2013.01) [H04B 7/0417 (2013.01)] | 36 Claims |
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1. A channel information feedback method, comprising:
generating first indication information, wherein the first indication information is determined based on a received precoded reference signal, and the received precoded reference signal corresponds to P reference signal ports; the first indication information indicates B complex coefficients, the B complex coefficients are determined from K complex coefficients according to a preset priority value, the K complex coefficients are determined from a complex coefficient set, the complex coefficient set comprises U complex coefficients that are determined for an sth reference signal port in S reference signal ports at each transport layer of Z transport layers, wherein s=0, 1, . . . , S−1, the S reference signal ports are a part or all of the P reference signal ports, the U complex coefficients are a part or all of Ts complex coefficients corresponding to the sth reference signal port, and the preset priority value is related to at least one of the following: an index value of each complex coefficient in the K complex coefficients, an index value of a reference signal port corresponding to each complex coefficient in the K complex coefficients in the S reference signal ports, and an index value of each complex coefficient in the K complex coefficients in a plurality of complex coefficients that are allowed to be selected for a corresponding reference signal port; wherein P, B, K, S, Z, and Ts are positive integers, B≤K, U≤Ts, and S≤P; and
sending the first indication information.
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