Communication Terminal Interface Selection Without Dedicated Route Packets
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Solution Overview
Problem
Communication terminals often fail to establish effective communication over wireless LAN due to channel congestion and radio interference, leading to deteriorated transmission quality and inefficiency in packet exchange, as existing methods require dedicated route determination packets.
Innovation Solution
A communication terminal with multiple wireless network interfaces that generates packets for service data and automatically selects the best interface based on response packets, switching to an alternative interface if the initial one is unavailable within a timeout period without using dedicated route determination packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated route determination packets are used to select communication interfaces, then communication transmission quality is improved, but communication efficiency and power efficiency are deteriorated
Solution Approach 1:
The patent merges the route determination function with the actual data packet transmission. Instead of sending separate route search frames and negotiation packets, the system uses the actual service packets themselves to determine communication interface availability and quality, eliminating the need for dedicated route determination packets while maintaining reliable communication selection
Solution Approach 2:
The communication terminal uses its own service packets to perform route determination. The packets generated for actual service communication simultaneously serve the dual purpose of determining which communication interface is available and assessing transmission quality, making the system self-sufficient without requiring separate determination packets
2Measurement precision
If route search frames are exchanged to determine communication routes, then accurate packet transmission is achieved, but communication efficiency is deteriorated due to additional packet exchange
Solution Approach 1:
The patent combines the measurement function with actual data transmission. The service packets carry both the user data and the route determination information simultaneously, eliminating the need for separate route search frames and reducing the total time for communication establishment
3Adaptability or versatility
If negotiation packets are used to change communication conditions, then adaptability to network changes is improved, but communication efficiency is deteriorated due to additional packet exchange
Solution Approach 1:
The patent merges negotiation and data transmission into a single process. The service packets simultaneously perform data communication and communication condition negotiation, allowing the system to adapt to network changes without requiring separate negotiation packets that would reduce communication efficiency
Data Source
AI summary
To provide a communication terminal capable of selecting a communication interface corresponding to a communicable wireless network without the use of a route determination dedicated packet. A packet generation means 93 generates a packet based on data for receiving a service from a destination device. A control means 94 selects a communication interface 91 from among a plurality of communication interfaces 91, instructs a packet processing means 95 to send a packet generated by the packet generation means 93 to the communication interface 91, and when a response packet for the packet is not input until a timeout determination reference time, selects a different communication interface 91 from the communication interface 91, instructs the packet processing means 95 to send a copy of the packet to the communication interface 91.