AMP PPDU Preamble Segmentation for Low-Complexity IoT Links
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Solution Overview
Problem
The design of dedicated PPDUs for ambient power-enabled IoT devices (AMP devices) is an urgent issue due to their low complexity, low power consumption, and maintenance-free characteristics, which are essential for large-scale deployment in harsh environments and ultra-compact, ultra-low-cost applications.
Innovation Solution
A method for wireless communication involving the transmission of a first PPDU with a first preamble part and an AMP part, specifically designed for AMP devices, allowing differentiation through unique modulation schemes and synchronization sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dedicated PPDUs are designed for AMP devices, then communication efficiency with AMP devices is improved, but device complexity increases
Solution Approach 1:
The PPDU is segmented into distinct parts: a legacy preamble part for compatibility with non-AMP devices and an AMP-specific part for AMP device communication. This segmentation allows AMP devices to process only the relevant AMP part while non-AMP devices can ignore it, improving communication efficiency for AMP devices without significantly increasing complexity for other devices.
Solution Approach 2:
The legacy preamble part serves multiple functions: it maintains compatibility with non-AMP devices and simultaneously provides a foundation for AMP device communication. The dual functionality reduces the need for completely separate communication protocols, thereby improving efficiency without proportionally increasing complexity.
2Measurement precision
If AMP-specific PPDUs are transmitted, then identification accuracy for AMP devices is improved, but signal processing complexity increases
Solution Approach 1:
The patent uses distinct modulation schemes and synchronization sequences as unique identifiers for AMP PPDUs, analogous to using different colors for identification. These distinctive signal characteristics enable receiving devices to quickly and accurately identify whether a transmitted PPDU is intended for an AMP device, improving identification accuracy through easily distinguishable signal features.
3Adaptability or versatility
If legacy preamble part is included for compatibility, then interoperability with non-AMP devices is improved, but transmission overhead increases
Solution Approach 1:
The patent extracts only the essential legacy preamble components needed for non-AMP device compatibility, rather than including the entire legacy PPDU structure. This selective extraction maintains interoperability with non-AMP devices while minimizing the overhead introduced by the legacy portion, as only the necessary synchronization and identification elements are retained.
Data Source
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AI summary
A wireless communication method, and a device. The method comprises: a network device sending a first physical layer protocol data unit (PPDU), wherein the first PPDU comprises a first preamble portion and an ambient power enabled IoT (AMP) portion, and the first PPDU is a PPDU sent to an AMP device.