ESL Beacon Scanning for Low-Power Indoor Positioning
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Solution Overview
Problem
Existing ESL devices consume excessive power during scanning operations for positioning procedures, which is inefficient and may not ensure timely and accurate location determination of target devices.
Innovation Solution
Configure ESL devices to perform targeted scanning operations based on location, transmission time, and transmission channel information of beacons, allowing for a selective and energy-efficient scanning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ESL devices perform continuous scanning operations to ensure timely and accurate location determination, then positioning accuracy and timeliness are improved, but power consumption increases excessively
Solution Approach 1:
The system performs preliminary actions by pre-configuring scanning parameters, selecting optimal scanning zones based on location information, and establishing beacon transmission schedules before actual positioning operations. This allows ESL devices to perform targeted scanning only where and when needed, rather than continuous scanning, thereby reducing power consumption while maintaining positioning accuracy.
Solution Approach 2:
The patent applies local quality by configuring different scanning strategies for different spatial zones. Instead of uniform continuous scanning across the entire area, the system identifies specific scanning zones based on target device location information and concentrates scanning resources in those local areas, reducing overall power consumption while maintaining accurate positioning in relevant zones.
2Reliability
If ESL devices perform comprehensive scanning of all beacons, then positioning reliability is improved, but scanning time and energy consumption increase
Solution Approach 1:
The system implements local quality by focusing scanning operations on specific spatial zones and temporal windows where beacons are most likely to be transmitted. Based on location information and beacon transmission schedules, the system concentrates scanning efforts in relevant local areas rather than comprehensively scanning the entire space, reducing scanning time while maintaining positioning reliability through targeted detection.
Solution Approach 2:
The patent applies preliminary action by pre-determining optimal scanning zones and time windows based on location information and beacon transmission patterns. This allows the system to perform reliable positioning by scanning only in pre-identified critical zones rather than exhaustively scanning all possible areas, thereby reducing scanning time while maintaining reliability.
Data Source
AI summary
In an aspect, a method of operating a processing device includes obtaining location information of a target device, transmission time information of first one or more beacons transmitted by the target device, or transmission channel information of the first one or more beacons; and configuring a first set of electronic shelf label (ESL) devices to perform a targeted scanning operation based on the location information, the transmission time information, or the transmission channel information. The method of operating the processing device further includes receiving one or more targeted scanning reports from the first set of ESL devices based on the targeted scanning operation, and engaging in a positioning procedure for determining an estimated location of the target device based on the one or more targeted scanning reports.