Sensing Schedule Coordination for Positioning Accuracy
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Solution Overview
Problem
Mobile device positioning systems face inaccuracies due to temporal misalignment of sensor readings from central and connected devices, leading to position errors when performing hybrid positioning and crowdsourced sensor measurements.
Innovation Solution
A central device coordinates sensing operations among connected devices by establishing network connections, querying their sensing capabilities, and generating a synchronized sensing schedule to align sensor readings, eliminating redundancy and increasing resolution without increasing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor readings are collected independently from central and connected devices, then device operation simplicity is maintained, but temporal misalignment occurs leading to position errors
Solution Approach 1:
The central device acts as an intermediary that coordinates sensing operations among connected devices. It generates and distributes a synchronized sensing schedule to all devices, ensuring temporal alignment of sensor readings without requiring complex peer-to-peer coordination between devices.
Solution Approach 2:
The sensing schedule is dynamically adjusted based on the specific sensing capabilities of each connected device. The central device queries each device's capabilities and tailors the schedule accordingly, allowing flexible adaptation while maintaining synchronization.
2Measurement precision
If sensing operations are performed continuously at high frequency, then measurement resolution is increased, but power consumption increases
Solution Approach 1:
Instead of continuous high-frequency sensing, the system uses periodic sensing operations scheduled at specific time intervals. The synchronized sensing schedule allows multiple devices to perform sensing at coordinated intervals, achieving high measurement resolution while minimizing power consumption by keeping sensors inactive between scheduled intervals.
Solution Approach 2:
The system achieves high overall sensing resolution through partial action by having different devices sense at different scheduled intervals rather than all devices sensing continuously. This distributes the sensing load across time and devices, maintaining high resolution while reducing individual device power consumption.
3Reliability
If multiple devices perform redundant sensing operations, then measurement coverage is improved, but energy waste and processing overhead increase
Solution Approach 1:
The sensing operations are segmented and distributed across multiple connected devices based on their specific capabilities and roles. Each device performs sensing for specific sensor types or time intervals assigned in the synchronized schedule, eliminating redundant operations while maintaining comprehensive measurement coverage through coordinated segmentation of sensing tasks.
Data Source
AI summary
Disclosed is an apparatus and method for synchronization of sensing operations performed by a plurality of devices. The method may include collecting sensing capabilities of one or more connected devices that are communicably coupled with a central device. Each connected device may include one or more sensors, and the sensing capabilities may include at least sensor type and sensing interval for each sensor. The method may also include coordinating sensing operations performed by the central device and the one or more connected devices.