LPWA Communication Device Adaptive Speed Control for Mobile Position Data
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Solution Overview
Problem
Existing LPWA communication devices do not effectively consider the reception success rate of position information when the terminal device is moving, leading to difficulties in receiving position information due to ongoing movement at the time of retransmission.
Innovation Solution
A communication device equipped with a position information acquisition unit, a storage unit, a communication unit, a movement detection unit, and a control unit that changes the communication speed when movement is detected, thereby improving the reception success rate of position information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If position information is retransmitted when movement is detected, then the position information can be sent again, but the reception success rate remains low because the terminal device is still moving
Solution Approach 1:
The patent applies dynamics by making the communication speed adaptive rather than fixed. The control unit dynamically adjusts the communication speed based on real-time movement detection results. When movement is detected, the system switches to a higher communication speed to complete transmission before position changes affect reception accuracy, thereby resolving the contradiction between maintaining reliability and reducing transmission time loss.
2Adaptability or versatility
If the terminal device continues to move during retransmission, then the device remains mobile, but the receiving side device cannot reliably receive position information
Solution Approach 1:
The patent applies parameter changes by modifying the communication speed parameter in response to movement conditions. The control unit changes the communication speed from a standard rate to an increased rate when movement is detected. This parameter adjustment allows the system to maintain adaptability for mobile transmission while improving reliability by completing transmission faster, before movement causes reception failure.
3Use of energy by moving object
If position information is transmitted at standard communication speed, then power consumption is low, but reception fails when the device is moving
Solution Approach 1:
The patent applies dynamics by implementing a dynamic communication speed adjustment mechanism. The control unit monitors movement detection results and adaptively changes the communication speed accordingly. When movement is detected, the system temporarily increases communication speed to ensure successful reception, then returns to standard speed for normal operation. This dynamic approach resolves the contradiction by only increasing power consumption when necessary for reliable transmission during movement.
Data Source
AI summary
A communication device is a communication device that transmits detection information including position information based on a communication system using LPWA, and includes a position information acquisition unit that acquires the position information, a storage unit that stores the detection information, a communication unit that performs wireless communication in compliance with the communication system, a movement detection unit that detects movement of the communication device, and a control unit that controls a communication speed of the wireless communication by the communication unit, in which, when the movement detection unit detects movement of the communication device, the control unit changes the communication speed.