Communication method and related device

The channel quality parameters of the spatial stream are determined by the receiving device, and indication information is generated to accurately select the modulation mode and code rate, which solves the problem of limited channel capacity in the MIMO system in Wi-Fi and improves transmission performance.

CN120658347APending Publication Date: 2025-09-16HUAWEI TECH CO LTD
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Patent Information

Application Number
CN202410296366.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-03-14
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

In Wi-Fi 6 or Wi-Fi 7, due to the channel differences experienced by each spatial stream in MIMO communications, existing technologies cannot accurately select the modulation method and code rate, resulting in the inability to maximize channel capacity and affecting transmission performance.

Method used

The receiving device determines the channel quality parameters of each spatial stream, such as the bit error probability or EVM, and generates indication information to accurately feedback the modulation mode and code rate of each spatial stream. Performance indicators are negotiated to flexibly feedback channel quality.

Benefits of technology

It improves the communication performance of each spatial stream, ensures more accurate selection of modulation mode and code rate, and improves the throughput and transmission efficiency of the MIMO system.

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Abstract

The invention provides a communication method and a related device, which can enable the selection of a modulation mode and a code rate of each spatial stream to be more accurate, and facilitate the improvement of the transmission performance of each spatial stream. The method comprises the steps that a second communication device sends a plurality of spatial streams to a first communication device, the coded code rate of each spatial stream in the plurality of spatial streams is a first code rate, and the modulated mode is a first modulation mode. A first communication device determines a first parameter of a first spatial stream. And the first communication device generates first indication information based on the first parameter, the first indication information being used for indicating a second modulation mode and / or a second code rate of the first spatial stream. And the first communication device sends the first indication information to the second communication device. And the second communication device determines a second modulation mode and a second code rate of the first spatial stream according to the first indication information.
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