Communication method, communication device and communication system

By having the first and second APs determine the transmit power based on the channel state information of the site equipment and simultaneously send PPDUs in Wi-Fi technology, the problem of low communication efficiency in Co-BF measurement is solved, signal strength and stability are improved, and network performance and device power consumption are optimized.

WO2026148537A1PCT designated stage Publication Date: 2026-07-16BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Filing Date
2025-01-09
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing Wi-Fi technologies have room for improvement in communication efficiency in coordinated beamforming (Co-BF) measurement mechanisms, particularly in terms of insufficient throughput and high device power consumption at different signal-to-noise ratio (SNR) levels.

Method used

During the Coordinated Beamforming (Co-BF) measurement process, the first and second APs determine the transmit power based on the measurement results of the NDP frame from their respective associated site equipment (STA), thereby enabling the transmission of PPDUs, ensuring signal strength and stability, and simultaneously transmitting PPDUs to optimize network resource utilization.

Benefits of technology

It improves the communication efficiency of the Co-BF measurement process, ensures the strength and stability of the signal during transmission, optimizes the overall network performance, increases throughput, and reduces device power consumption.

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Abstract

The embodiments of the present disclosure relate to a communication method, a communication device and a communication system. The communication method comprises: during coordinated beamforming (Co-BF) measurement established by a first AP, determining, on the basis of first channel state information, a first transmission power for transmitting a physical layer protocol data unit (PPDU) to a first station device (STA), wherein the first channel state information comprises measurement results obtained by the first STA after measuring a first null data packet (NDP) frame and a second NDP frame, the first NDP frame is transmitted by the first AP during the Co-BF measurement, the second NDP frame is transmitted by a second AP during the Co-BF measurement, the first AP is associated with the first STA, and the second AP participates in the Co-BF measurement and is associated with a second STA; and on the basis of the first transmission power, transmitting the PPDU to the first STA, wherein PPDU transmission between the first AP and the first STA and PPDU transmission between the second AP and the second STA are performed simultaneously. The embodiments of the present disclosure can provide a PPDU transmission method during Co-BF measurement.
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