Mobile Relay Control Device Speed-Based Handover Selection
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Solution Overview
Problem
Current mobile relaying systems lack the ability to effectively select a suitable handover or carrier-aggregation destination for wireless communication terminals, leading to unstable communication quality and shorter service periods due to the consideration of only radio wave intensity without accounting for relative vehicle speeds.
Innovation Solution
The system determines a vehicle with a slower relative speed as the handover or carrier-aggregation destination for wireless communication terminals, ensuring a more stable connection by prioritizing vehicles with stronger received radio wave intensity and slower relative speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile relaying systems select handover or carrier-aggregation destinations based only on radio wave intensity, then connection establishment is simplified, but communication stability deteriorates and service duration shortens
Solution Approach 1:
The patent changes the selection parameters from only radio wave intensity to a composite of radio wave intensity and relative vehicle speed. The control device calculates relative speed between vehicles and uses this additional parameter to determine handover or carrier-aggregation destinations, thereby improving communication stability while maintaining operational simplicity
Solution Approach 2:
The system performs beforehand evaluation of both radio wave intensity and relative vehicle speed before making handover or carrier-aggregation decisions. By predicting future connection quality based on current speed parameters, the system prevents premature disconnection and extends service duration
2Device complexity
If mobile relaying systems select handover or carrier-aggregation destinations based only on radio wave intensity, then selection process is simplified, but service duration shortens
Solution Approach 1:
The patent introduces relative vehicle speed as an additional selection parameter alongside radio wave intensity. The control device obtains moving information from other vehicles, calculates relative speed, and incorporates this into the destination selection criteria, thereby extending service duration while maintaining manageable system complexity
Solution Approach 2:
The system performs preliminary evaluation of relative vehicle speed and radio wave intensity before handover or carrier-aggregation decisions. By anticipating future connection quality based on current speed parameters, the system extends service duration without significantly increasing selection process complexity
Data Source
AI summary
A control device is provided, including: a relative-speed acquiring unit for acquiring relative speeds of a movable first mobile relaying apparatus and a movable second mobile relaying apparatus, which are camped on a cell of a wireless base station to relay communications between the wireless base station and a wireless communication terminal; and a determination unit for determining, based on the relative speeds, whether the second mobile relaying apparatus becomes a handover destination, from the first mobile relaying apparatus, of the wireless communication terminal camped on the first mobile relaying apparatus, or becomes a carrier-aggregation destination of the first mobile relaying apparatus for the wireless communication terminal camped on the first mobile relaying apparatus.