Low-Power Radio Sequence Correlation for Edge Device Detection
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Solution Overview
Problem
Existing wireless device detection methods fail to detect peer devices at the edge of the detection range or in crowded signal environments, especially for battery-powered devices, leading to inefficient power consumption and network resource waste.
Innovation Solution
Implement sequence-level correlation operations using signal peaks in wireless communication frames, where a device is detected based on the relative timings of signal peaks generated by a sequence correlator, even in crowded environments, without increasing power or frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing wireless device detection methods are used, then power consumption is reduced for battery-powered devices, but detection range is limited and peer devices at the edge of detection range cannot be detected
Solution Approach 1:
The patent segments the wireless communication frame into multiple sequences (preamble, access address, payload) and performs correlation operations on each sequence independently. This segmentation allows the receiver to detect peer devices using multiple independent detection opportunities, improving detection reliability without requiring increased transmission power.
2Reliability
If existing wireless device detection methods are used, then device complexity is kept simple, but detection performance fails in crowded signal environments
Solution Approach 1:
The patent performs preliminary correlation operations on individual sequences (preamble, access address, payload) before combining results. By pre-processing each sequence separately and identifying matches early, the system improves detection performance in crowded environments while managing processing complexity through staged operations rather than simultaneous full-frame analysis.
Data Source
AI summary
Systems and methods for low power wireless device detection are provided. In one or more implementations, a transmitting/advertising device may include a device identifier and/or one or more time-offset bits in a wireless communication frame for a scanning/receiving device. The scanning/receiving device may perform sequence-level correlation operations to detect the presence of the transmitting/advertising device. The sequence-level correlation operations may detect the transmitting/advertising device based on a detection of a correlation signal peak corresponding to the device identifier, and/or based relative timing of the correlation signal peak corresponding to the device identifier and a correlation signal peak corresponding to another item in the wireless communication frame.