Communication method and communication device

By designing a new PPDU structure and using energy harvesting and backscattering technologies, the communication difficulties of IoT terminals in extreme environments of wireless communication systems have been solved, realizing low-cost, battery-free, and maintenance-free IoT communication, which is suitable for IoT devices with extremely small size and in extreme environments.

WO2026031385A1PCT designated stage Publication Date: 2026-02-12GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
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Patent Information

Application Number
PCT/CN2024/131425
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-09-20
Filing Date
2024-11-11
Publication Date
2026-02-12

AI Technical Summary

Technical Problem

Existing wireless communication systems face communication difficulties in extreme environments and applications with extremely small, low-cost IoT terminals. In particular, the PPDU structure of the 802.11ba standard cannot effectively wake up wireless devices in extreme environments, and existing IoT terminals are difficult to maintain in extreme environments.

Method used

A novel PPDU structure is designed, comprising broadband and narrowband sections. The narrowband section includes a synchronization domain, which uses a specific sequence for signal synchronization, supporting communication of zero-power devices. It also utilizes energy harvesting and backscattering techniques to enable communication of passive or semi-passive devices.

Benefits of technology

It enables low-cost, low-complexity communication without batteries in extreme environments, improving the capacity and efficiency of communication systems, and is suitable for extremely small and maintenance-free IoT terminals.

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Abstract

Provided are a communication method and a communication device. The method comprises: a first device sending a first PPDU to a second device, wherein the first PPDU comprises a wideband part and a narrowband part, the narrowband part comprises a synchronization domain, and a sequence in the synchronization domain is a first sequence.
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Citation Information

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