Mobile Receiver Positioning for Multi-Hop Sensor Data Collection
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Solution Overview
Problem
Existing IoT systems face challenges with wired-type sensors requiring cumbersome installation and wireless-type sensors having limited transmission range and interference issues, while repeater-based systems limit data collection to a single hop, leading to operational inefficiencies and incomplete data reception from sensors beyond one hop.
Innovation Solution
A wireless communication system featuring a self-propelled receiver that moves based on sensor transmission timing, installation position, and reception range to efficiently collect data from sensors using a repeater for multi-hop data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a repeater is used to extend wireless communication range, then the reception range is improved, but the system complexity increases and single-hop limitation remains
Solution Approach 1:
The repeater is transformed from a stationary device to a mobile device capable of autonomous movement. The mobile repeater navigates to optimal positions to establish communication links between the edge device and sensors, dynamically adapting to changing environmental conditions and sensor locations while maintaining simple system architecture.
Solution Approach 2:
The mobile repeater performs autonomous navigation and positioning without requiring complex external control systems. It independently determines its movement path and positioning based on simple control signals from the edge device, reducing overall system complexity while extending reception range through multi-hop communication.
2Loss of energy
If sensors transmit data at specific timing, then energy consumption is reduced, but data may be lost if receiver is not in position
Solution Approach 1:
The edge device and mobile repeater perform preliminary positioning actions before the sensor's scheduled data transmission. The mobile repeater navigates to the optimal reception position in advance, ensuring it is within communication range when the sensor transmits data at its specific timing, thus preventing data loss while maintaining energy-efficient periodic transmission.
Solution Approach 2:
The system implements feedback mechanisms where the edge device monitors the positional relationship between the mobile repeater and sensors. Based on this feedback, the edge device sends control signals to adjust the repeater's position, ensuring optimal alignment before data transmission occurs, thereby guaranteeing reliable data reception at specific transmission timings.
3Area of stationary object
If multiple edges are installed to cover areas beyond repeater range, then coverage is improved, but operational effort increases
Solution Approach 1:
Instead of deploying multiple stationary edge devices to cover large areas, the system uses a single mobile repeater that dynamically moves to different locations. This dynamic approach allows one edge device to effectively cover the entire area by relaying data from various sensor locations sequentially, significantly reducing the number of edge devices needed and simplifying operational management.
Data Source
AI summary
A wireless communication system includes a receiver that is configured to be capable of self-propelled movement, performs movement control of the receiver based on a transmission timing of sensing information of a sensor, an installation position of the sensor, and a range in which reception is possible in a case where the sensing information is received from the sensor, and receives the sensing information of the sensor.