Communication methods and communication devices
By increasing the number of pilot subcarriers in high-frequency WLANs, the issues of carrier frequency offset and phase noise are mitigated, improving communication quality and robustness.
JP2026520547APending Publication Date: 2026-06-23HUAWEI TECH CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2024-05-29
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
In high-frequency wireless local area networks (WLANs), the use of an 'upclocking' version based on low-frequency PPDU for transmission at high frequencies leads to issues with carrier frequency offset (CFO) and phase noise, which are not adequately addressed by existing methods.
Method used
Increasing the number of pilot subcarriers in the PPDU transmission, specifically by adding M additional pilot subcarriers to the existing K pilot subcarriers, to enhance resistance to CFO and phase noise, thereby improving communication quality.
Benefits of technology
The increased number of pilot subcarriers helps mitigate the effects of CFO and phase noise, enhancing the robustness and quality of high-frequency transmissions.
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Smart Images
Figure 2026520547000001_ABST
Abstract
This application provides a communication method and a communication apparatus. The method includes the steps of generating a PPDU and transmitting the PPDU on a channel corresponding to a first bandwidth. X subcarriers of Y subcarriers corresponding to the first bandwidth are used to carry data corresponding to X data subcarriers of at least one RU and / or at least one MRU, where the X subcarriers are subcarriers other than K pilot subcarriers of the Y subcarriers, where the Y subcarriers further include M pilot subcarriers, where the M pilot subcarriers are the X subcarriers and K pilot subcarriers of the Y subcarriers. The method is designed to "increase the number of pilot subcarriers," where the number of pilot subcarriers is expanded from K to K+M. In other words, M pilot subcarriers are added. This helps to withstand the effects of a larger CFO and higher frequency phase noise, improve the robustness of low-frequency transmission, and improve communication quality.
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