Dynamic Master Unit Selection for Battery Smoothing in Wireless Networks
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Solution Overview
Problem
In smart grid wireless communication networks, the battery life of master units is consumed more quickly than that of slave units, leading to potential network failures due to uneven battery consumption, which is not effectively addressed by existing methods that only re-select a master unit upon communication failure or radio interruption.
Innovation Solution
A wireless communication network system that dynamically selects a master unit based on reception quality information and remaining battery levels, sending a master unit request notification and storage battery remaining level threshold information, allowing for proactive monitoring and change of the master unit when the battery level falls below a threshold, thereby smoothing battery consumption across all terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a master unit is selected in multihop communication, then network control and data collection are enabled, but the master unit's battery is consumed significantly faster than slave units
Solution Approach 1:
The patent implements dynamic master unit selection where the master unit role is not fixed but can be transferred between terminals based on real-time battery status. The system continuously monitors battery levels and automatically reassigns the master unit when the current master's battery falls below a threshold, making the master unit selection dynamic rather than static to balance energy consumption across the network.
Solution Approach 2:
The system performs preliminary monitoring of battery levels and proactively transfers the master unit role before the current master unit's battery is completely depleted. By setting a threshold and monitoring continuously, the system takes preliminary action to prevent communication failures, ensuring smooth role transition before the harmful effect of battery exhaustion occurs.
2Stability of the object's composition
If the master unit is not changed frequently, then network stability is maintained, but battery consumption is not smoothed among terminals
Solution Approach 1:
The system implements a feedback mechanism where battery level information is continuously monitored and fed back to the control logic. When the master unit's battery level feedback indicates it has fallen below the threshold, the system automatically triggers a master unit transfer. This closed-loop feedback ensures the network remains stable under normal conditions while automatically adapting when energy distribution becomes unbalanced.
Solution Approach 2:
The system changes the operational parameter of master unit identity based on battery level conditions. Rather than keeping the master unit fixed, the system allows the master unit parameter to change dynamically when battery thresholds are exceeded, thereby smoothing energy consumption across terminals while maintaining network stability through controlled, condition-based transitions.
3Device complexity
If existing methods re-select master unit only upon communication failure, then device complexity is reduced, but network reliability during long-term operation deteriorates
Solution Approach 1:
Instead of waiting for communication failure to trigger master unit re-selection, the system performs preliminary action by continuously monitoring battery levels and proactively transferring the master unit role before failure occurs. This preventive approach adds minimal complexity but significantly improves long-term network reliability by avoiding the disruption of master unit exhaustion.
Solution Approach 2:
The system implements self-service through automatic battery level monitoring and autonomous master unit transfer decisions. Each terminal monitors its own and others' battery levels, and the system automatically executes role transfer without external intervention, maintaining simple device architecture while ensuring reliable long-term operation through self-managed energy balancing.
Data Source
AI summary
A wireless communication network system includes a first wireless communication device; and second wireless communication devices. The first wireless communication device selects a master unit from among the second wireless communication devices, on the basis of reception quality and storage battery remaining levels, and sends, to the selected master unit, a master unit request and a storage battery remaining level threshold for the master unit. The selected second wireless communication device operates as the master unit in accordance with the master unit request, and monitors the storage battery remaining level of the selected second wireless communication device on the basis of the storage battery remaining level threshold. When the storage battery remaining level of the selected second wireless communication device does not match the storage battery remaining level threshold, the selected second wireless communication device sends a master unit change request to the first wireless communication device.