Mobile Communication Control for Defective Wireless Link Recovery
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Solution Overview
Problem
Existing communication systems in mobile objects face issues with non-delivered packets due to defective communication states, leading to unnecessary packet resending and increased processing load.
Innovation Solution
A communication control system that includes a Telematics Control Unit (TCU) with a communication control unit that detects defective communication states and transmits Reset (RST) packets to ECUs and communication terminals, implementing a DROP processing to prevent unnecessary packet resending and switching to cellular communication when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication control unit continuously monitors and manages packet transmission states, then communication reliability is improved, but processing load and system complexity increase
Solution Approach 1:
The communication control unit acts as an intermediary between the defect detection unit and the RST packet transmission function. It receives defect information from the defect detection unit, determines whether RST packet transmission is necessary, and controls the transmission accordingly. This intermediary role simplifies the overall system architecture by centralizing the decision-making logic for packet management, thereby improving communication reliability without proportionally increasing system complexity.
2Reliability
If RST packets are transmitted frequently to prevent non-delivered packets, then packet delivery reliability is improved, but communication overhead and processing load increase
Solution Approach 1:
The system implements a feedback mechanism where the defect detection unit continuously monitors communication states and provides real-time information to the communication control unit. Based on this feedback, the communication control unit intelligently determines whether to transmit RST packets, rather than transmitting them at fixed intervals or unconditionally. This feedback-driven approach ensures packet delivery reliability while minimizing unnecessary communication overhead and energy consumption.
3Reliability
If the system implements comprehensive packet management and RST packet transmission control, then non-delivered packet prevention is improved, but processing time and computational load increase
Solution Approach 1:
The defect detection unit performs preliminary monitoring of communication states and identifies potential defects before they result in non-delivered packets. By detecting communication defects in advance, the system can proactively transmit RST packets to prevent packet loss, rather than reacting after packets are already lost. This preliminary action reduces the need for extensive post-detection processing and minimizes overall processing time while maintaining high reliability.
Data Source
AI summary
A communication control device is provided in a mobile object. The communication control device comprises a communication processing unit which performs processing for transmitting, through a wireless communication unit provided in the mobile object, a packet transmitted from a communication device, a detection unit which detects that a communication state in a communication channel through the wireless communication unit has become defective, and a control unit which performs control to transmit an RST packet to the communication device when a defective communication state is detected. The communication control method comprises performing control to transmit, through a wireless communication unit provided in the mobile object, a packet transmitted from a communication device, detecting that a communication state in a communication channel through the wireless communication unit has become defective, and when a defective communication state is detected, performing control to transmit an RST packet to the communication device.