Border Radio Control for AGV Interference Mitigation
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Solution Overview
Problem
Existing interference mitigation techniques for stationary devices are not easily applicable to mobile devices like Automated Guided Vehicles (AGVs) in industrial environments, which can cause disruptions in neighboring networks due to their mobile operation, especially when operating near the borders of licensed frequency areas.
Innovation Solution
A border assistance device equipped with dual radio interfaces measures signal strength and adjusts transmission parameters of mobile devices to prevent interference, using a network management device to manage communications and enforce predefined thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile devices operate with high transmission power to maintain communication coverage, then communication reliability is improved, but interference to neighboring networks increases
Solution Approach 1:
The system implements a feedback mechanism where border assistance devices monitor signal strength from mobile devices. When a mobile device approaches the border of the licensed area, the system receives signal strength information, compares it against thresholds, and sends control messages back to the mobile device to adjust its transmission power accordingly, creating a closed-loop control system that dynamically balances communication reliability with interference mitigation
Solution Approach 2:
The system dynamically adjusts transmission parameters of mobile devices based on their real-time position and signal strength measurements. Instead of using fixed transmission power, the mobile device's transmission power is continuously adapted as it moves through different zones (normal area, border area, outside area), allowing the system to maintain communication reliability while minimizing interference to neighboring networks
2Adaptability or versatility
If mobile devices travel freely within the licensed area, then operational flexibility is improved, but interference to neighboring networks increases
Solution Approach 1:
The system maintains operational flexibility by allowing mobile devices to travel freely within the licensed area while dynamically adjusting transmission parameters based on real-time position. The border assistance devices monitor signal strength and trigger control messages only when the mobile device approaches the border, enabling unrestricted movement in safe zones while applying interference mitigation measures only when necessary
Solution Approach 2:
The system applies different control strategies to different spatial zones. In the normal area (away from borders), mobile devices operate with standard transmission parameters maintaining full operational flexibility. In the border area (near the licensed area boundary), the system activates interference mitigation measures by adjusting transmission power, creating location-specific operational characteristics
3Object-generated harmful factors
If transmission power is reduced to minimize interference, then interference to neighboring networks is reduced, but communication coverage and reliability deteriorate
Solution Approach 1:
The system applies transmission power reduction measures locally only in the border area where interference to neighboring networks is a concern. In the normal area (away from borders), mobile devices maintain full transmission power for optimal communication coverage. This spatially differentiated approach ensures that communication reliability is preserved in areas where it matters while minimizing interference in border zones
Solution Approach 2:
The system dynamically adjusts transmission power based on the mobile device's real-time position relative to the border. When the mobile device is in the normal area, full transmission power is maintained for optimal coverage. When the mobile device approaches the border and enters the border area, the system reduces transmission power to minimize interference, and when the mobile device exits the licensed area, further power reduction is applied
Data Source
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AI summary
The current disclosure describes a method for regulating transmission of a plurality of industrial devices in a first section of an industrial facility. The method comprises measuring radio signal strength at a first location in the first section and comparing the measured radio signal strength against a predefined threshold associated with the first location in the first section. The radio signal strength is associated with one or more signals transmitted by at least one industrial device of a first wireless network in the first section. The comparison of the measured radio strength against the predefined threshold is performed for transmitting a message to the industrial device. Based on the message, the at least one industrial device is configured to adjust at least one transmission parameter of the industrial device.