Communication Apparatus Active Measurement Path Control
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Solution Overview
Problem
In automated transportation systems, unstable communication between the communication apparatus and access points leads to unstable control of mobile bodies, particularly when moving outside coverage areas or between access points, causing disconnections and delays.
Innovation Solution
A communication apparatus with a reception information acquisition unit, influence estimation unit, active measurement unit, communication quality estimation unit, and communication path control unit that acquires and analyzes reception information to estimate communication quality and control paths between the communication apparatus and access points, ensuring stable wireless communication by switching communication paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the mobile body moves outside coverage areas or between access points, then the communication coverage is expanded, but the communication stability deteriorates causing disconnections and delays
Solution Approach 1:
The communication apparatus performs active measurement in advance to evaluate communication quality with multiple access points before actual communication occurs. The reception information acquisition unit acquires reception information, the influence estimation unit estimates the influence of active measurement on current communication, and the communication quality estimation unit estimates communication quality based on these factors. This preliminary evaluation enables the communication path control unit to select optimal communication paths in advance, ensuring stable communication even when moving between coverage areas.
Solution Approach 2:
The system continuously monitors communication quality through active measurement and uses this feedback to dynamically control communication paths. The communication quality estimation unit provides real-time feedback on communication quality, and the communication path control unit adjusts communication paths based on this feedback. This closed-loop feedback mechanism ensures that the mobile body maintains stable communication by switching to optimal access points when moving between coverage areas.
2Measurement precision
If active measurement is performed to estimate communication quality, then the communication quality estimation accuracy is improved, but the influence on current communication increases
Solution Approach 1:
The system performs active measurement with controlled parameters to achieve sufficient measurement precision without excessive impact on current communication. The influence estimation unit evaluates the potential influence of active measurement on current communication and adjusts the measurement parameters accordingly. By using partial action (controlled active measurement) rather than excessive action (continuous full-power measurement), the system achieves adequate communication quality estimation while minimizing interference with ongoing communication.
Data Source
AI summary
A communication apparatus according to the present disclosure includes an communication unit that can communicate with a plurality of access points, a reception information acquisition unit that acquires reception information about the communication unit, an influence estimation unit that can estimate an influence on current communication when the communication unit performs active measurement based on the reception information acquired by the reception information acquisition unit, an active measurement unit that performs the active measurement based on a result of the estimation of the influence by the influence estimation unit, a communication quality estimation unit configured to estimate communication quality based on the reception information and a result of the measurement by the active measurement unit, and a communication path control unit that controls a communication path between the communication unit and the plurality of access points based on the communication quality estimated by the communication quality estimation unit.