Dynamic Communication Protocol Selection for Wireless and Wired Links
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Solution Overview
Problem
Wireless communication links, especially those using conventional radio waves or optical space communication, face issues such as radio wave interference, limited available lines, and signal errors due to obstacles or vibrations, leading to reduced communication performance and increased signal loss times, particularly affecting TCP/IP data transmission.
Innovation Solution
A communication system where a communication control apparatus establishes a communication path and notifies terminals of the path type, allowing them to adjust the communication protocol accordingly, such as using WTCP for wireless links or transport protocols for optical space communication, to match the communication path and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication links (radio waves or optical space communication) are used as alternatives to wired links, then cable installation complexity is reduced and connection flexibility is improved, but communication reliability deteriorates due to signal errors, obstacles, and vibrations
Solution Approach 1:
The patent dynamically adapts communication protocols based on the detected path type. The terminal device switches between different protocols (e.g., TCP for wired paths, UDP or specialized protocols for wireless paths) depending on whether the communication path is identified as wired or wireless, allowing the system to optimize reliability for each path type while maintaining connection flexibility
Solution Approach 2:
The patent changes communication protocol parameters based on path characteristics. When a wireless path is detected, the system modifies protocol parameters such as error handling mechanisms, retransmission strategies, and packet formatting to accommodate the less reliable wireless medium, thereby maintaining communication reliability while using wireless links
2Ease of manufacture
If conventional radio wave communication (2.4 GHz band) is used, then ease of implementation is improved, but communication performance deteriorates due to radio wave interference and limited available lines
Solution Approach 1:
The patent makes the communication system universal by supporting multiple communication protocols and path types. The terminal device can operate over wired or wireless paths using appropriate protocols, allowing the system to leverage the ease of implementation of wireless communication while avoiding its performance limitations by switching to wired paths when higher performance is needed
3Quantity of substance
If optical space communication is used, then wireless link density is improved, but communication reliability deteriorates due to optical axis deviation and signal loss from external vibrations
Solution Approach 1:
The patent dynamically selects communication protocols based on detected path characteristics. When optical space communication paths are identified, the system applies protocols specifically designed to handle the high link density scenario while compensating for vibration-induced optical axis deviations, thereby maintaining both high density and reliability
4Reliability
If TCP/IP protocol is used for wireless communication, then data transmission reliability is improved through retransmission control, but communication efficiency deteriorates due to increased signal loss times and retransmission delays
Solution Approach 1:
The patent applies different communication protocols to different path types rather than using a single protocol universally. For wired paths, TCP/IP provides robust error handling. For wireless paths, the system uses protocols better suited to the wireless medium, applying local quality adjustments to match protocol characteristics to path characteristics, thereby improving overall communication efficiency while maintaining appropriate reliability
Data Source
AI summary
A communication system includes a communication control apparatus that establishes a communication path between terminals and notifies at least one of the terminals of information about the established communication path. The terminal that has received the notification from the communication control apparatus establishes a communication protocol to be used for communication between the terminals on the basis of the information from the communication control apparatus.


