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US 2019/0158247 A1Published application
Channel Information Transmission Apparatus and Method, and System
AssigneeHuawei Technologies Co., Ltd.
InventorsDi Zhang, Kunpeng Liu
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Abstract
A channel information transmission apparatus and method, and a system are disclosed to improve channel information feedback precision. A first device includes: a receiving module, configured to receive a reference signal from a second device; a processing module, configured to obtain a precoding matrix based on the reference signal, and generate first channel information and second channel information that are used to indicate the precoding matrix; and a sending module, configured to send the first channel information and the second channel information to the second device.
Claims15
A first device, comprising:
- a receiver configured to receive a reference signal from a second device;
- a processor;
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
- obtaining a precoding matrix in accordance with the reference signal;
- and
- generating first channel information and second channel information corresponding to the precoding matrix;
- and
- a transmitter configured to send the first channel information and the second channel information to the second device, wherein
- the first channel information is more precise than the second channel information;
- the first channel information comprises phase information of each element in the precoding matrix;
- and
- the second channel information comprises amplitude information of each element in the precoding matrix.
9 more elements
A second device, comprising:
- a transmitter configured to send a reference signal to a first device;
- a receiver configured to receive first channel information and second channel information from the first device, wherein the first channel information and the second channel information indicates a precoding matrix, and the precoding matrix is obtained by the first device in accordance with the reference signal, wherein the first channel information more precise than the second channel information, the first channel information comprises phase information of each element in the precoding matrix, and the second channel information comprises amplitude information of each element in the precoding matrix;
- a processor;
- and
- a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for determining the precoding matrix in accordance with the first channel information and the second channel information, wherein the transmitter is further configured to send data to the first device in accordance with the precoding matrix.
2 more elements
A method, comprising:
- receiving, by a first device, a reference signal from a second device;
- obtaining, by the first device, a precoding matrix in accordance with the reference signal;
- generating, by the first device, first channel information and second channel information corresponding to the precoding matrix;
- and
- sending, by the first device, the first channel information and the second channel information to the second device, wherein
- the first channel information is more precise than the second channel information;
- the first channel information comprises phase information of each element in the precoding matrix;
- and
- the second channel information comprises amplitude information of each element in the precoding matrix.
6 more elements
A method, comprising:
- sending, by a second device, a reference signal to a first device;
- receiving, by the second device, first channel information and second channel information from the first device, wherein the first channel information and the second channel information indicate a precoding matrix, and the precoding matrix is obtained by the first device in accordance with the reference signal, wherein the first channel information is more precise than the second channel information, the first channel information comprises phase information of each element in the precoding matrix, and the second channel information comprises amplitude information of each element in the precoding matrix;
- determining, by the second device, the precoding matrix in accordance with the first channel information and the second channel information;
- and
- sending, by the second device, data to the first device in accordance with the precoding matrix.
2 more elements
Dependencies are inferred from the claim text.