Mobile Relay Control for Signal Stability in Moving Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile base station communication systems face instability due to the assumption of fixed base stations, leading to poor signal quality when base stations move freely, such as in vehicles.
Innovation Solution
A control apparatus is developed to manage relay apparatuses mounted on mobile objects, acquiring mobile object information to determine movement speed and position, activating relay functions when stationary, and deactivating them when moving, thereby improving communication quality by optimizing relay apparatus placement and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay apparatus are mounted on mobile objects to provide base station coverage, then communication coverage is improved, but signal quality becomes unstable due to movement
Solution Approach 1:
The relay apparatus dynamically adjusts its operational state based on movement conditions. The control apparatus determines whether the mobile object is moving or stationary, and accordingly activates or deactivates the relay function. This dynamic adaptation resolves the contradiction by allowing the system to provide coverage when stationary while avoiding instability during movement.
Solution Approach 2:
The system changes the operational parameter (relay function activation state) based on the movement state of the mobile object. When the mobile object is stationary, the relay function is activated to provide stable signal relay. When movement is detected, the relay function is deactivated to prevent signal quality degradation. This parameter change strategy resolves the contradiction between coverage provision and signal stability.
2Productivity
If relay functions are continuously activated on mobile objects, then communication availability is improved, but communication quality deteriorates during movement
Solution Approach 1:
The system periodically checks the movement state of the mobile object and adjusts the relay function accordingly. Rather than continuous activation, the relay function is activated only during periods when the mobile object is stationary, as determined by periodic monitoring. This periodic action maintains communication availability while ensuring quality by avoiding activation during movement periods.
Solution Approach 2:
The control apparatus receives feedback about the movement state of the mobile object and adjusts the relay function based on this feedback. The system monitors movement conditions and uses this information to make real-time decisions about relay activation. This feedback mechanism ensures that the relay function is activated only when conditions are favorable for stable communication.
3Area of stationary object
If multiple relay apparatus operate simultaneously in high-traffic areas, then communication coverage is enhanced, but interference increases
Solution Approach 1:
The system extracts or removes potentially harmful relay operations from the system when movement is detected. By deactivating relay functions on moving mobile objects, the system eliminates the source of interference that would otherwise be generated by unstable relay operations. This extraction of harmful elements reduces overall interference in high-traffic areas while maintaining necessary coverage through stationary relays.
Data Source
AI summary
A mobile object communication system is configured with the assumption that a base station is fixed. Therefore, signal quality becomes unstable if the base station moves freely. Provided is a control apparatus controlling a relay apparatus that is mounted in a mobile object and relays communication between a base station and a communication terminal, including a mobile object information acquiring section that acquires mobile object information indicating a state of the mobile object and a control section that controls the relay apparatus based on the mobile object information. If the movement speed of the mobile object is judged to be less than a predetermined value, the control section may generate a relay control signal indicating that a relay function of the relay apparatus is to be activated.