Communication method and communication apparatus
Through the two-level feedback method, the terminal device reduces the resource overhead of full-channel feedback in the 5G communication system, solving the problem of increasing resource overhead caused by the number of antenna ports greater than the number of transmission layers.
WO2025066887A1 Publication Date: 2025-04-03HUAWEI TECH CO LTD
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Patent Information
- Application Number
- PCT/CN2024/117868
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-09-28
- Filing Date
- 2024-09-10
- Publication Date
- 2025-04-03
AI Technical Summary
Technical Problem
In 5G communication systems, when the terminal device performs full-channel feedback, the number of antenna ports may be greater than the number of transmission layers, resulting in an increase in resource overhead.
Method used
Through the two-stage feedback method, the terminal device indicates the union of the space frequency substrate group during the first level of feedback, and specifically indicates the non-zero coefficient position of each antenna port during the second level of feedback, reducing resource overhead.
Benefits of technology
This method effectively reduces the resource overhead of full channel feedback, reduces the complexity of terminal equipment sending information to network equipment and the complexity of resource configuration.
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Abstract
Provided in the present application are a communication method and a communication apparatus. The communication method comprises: a terminal device reporting a full-channel measurement result to a network device by means of two stages of feedback, wherein in a first stage, at least one space-frequency base group in which all antenna ports of the terminal device have non-zero coefficients in a matrix that corresponds to a space-domain base set and a frequency-domain base set is fed back, and in a second stage, the position where each antenna port from among all the antenna ports has a non-zero coefficient in the at least one space-frequency base group is specifically fed back. By means of this type of two-stage feedback method, the embodiments of the present application can reduce the resource overheads of full-channel feedback.
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