PPDU sending method, PPDU receiving method and communication device

CN121907418APending Publication Date: 2026-04-21HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2019-05-28
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

In multi-AP cooperative transmission, the different physical layer preambles of PPDUs sent by different APs make it impossible for the receiver to determine whether it has its own MPDU to receive, resulting in mutual interference of physical layer preambles and affecting the success rate of PPDU reception.

Method used

By constructing an AP cooperation set, all APs are treated as a special AP, and the physical layer preamble of the PPDU carries a special BSS color, making the preamble portion of the PPDU sent by all APs identical, eliminating mutual interference of physical layer preambles, and improving the reception success rate.

Benefits of technology

It eliminates physical layer preamble interference, improves the success rate of PPDU reception at the receiving end, and ensures the accuracy and efficiency of data transmission.

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Abstract

The invention provides a PPDU sending method, a PPDU receiving method and a communication device, and the method comprises the steps: building a special BSS based on an AP cooperation set, taking all APs in the AP cooperation set as a special AP, employing the AP cooperation set to serve a first station, enabling a physical layer preamble of a PPDU sent by each AP in the AP cooperation set to carry a BSS color of a special BSS, and enabling the PPDU to be in a PPDU transmission state, and enabling the PPDU to be in a PPDU transmission state. Therefore, when the PPDU of the special AP is sent by the first AP in the AP cooperation set, the physical layer preamble part of the first AP is the same as the physical layer preamble part of the PPDU sent by other APs, namely the second AP, in the AP cooperation set, so that the mutual interference phenomenon of the physical layer preambles can be eliminated, and the success rate that the PPDU is accurately received by the STA is improved.
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