Wireless Communication Apparatus Dynamic Channel Switching
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Solution Overview
Problem
Current wireless communication systems lack established standards for switching between cellular communication and Device-to-Device (D2D) communication, leading to inadequate control over inter-terminal communication switching.
Innovation Solution
A wireless communication apparatus and system that includes a communication circuit and control circuit to establish and switch between communication channels, automatically switching from D2D communication to cellular communication when the D2D channel quality deteriorates or upon receiving specific Layer 2 or Layer 3 signals, ensuring continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D communication is used for direct terminal-to-terminal communication, then communication efficiency and speed are improved, but communication reliability deteriorates when channel quality degrades
Solution Approach 1:
The system dynamically switches between D2D communication mode and cellular communication mode based on real-time channel quality conditions. When D2D channel quality is good, the system operates in D2D mode for high efficiency; when channel quality deteriorates below a threshold, the system automatically switches to cellular mode via base station to maintain reliability, thus resolving the contradiction between efficiency and reliability.
Solution Approach 2:
The system changes the communication mode parameter based on channel quality parameters. By monitoring channel quality metrics and comparing them against predefined thresholds, the system adjusts the communication mode (D2D or cellular) to optimize the balance between communication efficiency and reliability under different channel conditions.
2Reliability
If automatic switching between communication modes is implemented, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The system implements a feedback mechanism where the terminal continuously monitors D2D channel quality and provides this information to the base station. The base station determines whether switching to cellular mode is necessary and sends switching instructions back to the terminal. This feedback-based approach automates the switching process while distributing complexity between the terminal and base station, reducing the burden on individual devices.
Solution Approach 2:
The base station acts as an intermediary that coordinates the switching between D2D and cellular communication modes. Instead of requiring complex autonomous decision-making at the terminal, the base station receives channel quality reports, makes the switching decision, and instructs the terminal accordingly. This intermediary approach simplifies terminal complexity while maintaining system-wide reliability.
3Reliability
If switching from D2D to cellular communication is implemented when channel quality degrades, then communication reliability is improved, but communication interruption time increases
Solution Approach 1:
The system performs preliminary actions by pre-establishing cellular communication paths and maintaining connection states with the base station even during D2D operation. When channel quality degradation is detected, the switching to cellular mode can occur more rapidly because the cellular path is already prepared and available, reducing the interruption time associated with mode switching.
Data Source
AI summary
A wireless apparatus, which is used as a first wireless apparatus in a wireless system that includes the first wireless apparatus and a plurality of second wireless apparatuses, includes: a communication circuit for receiving a result of measurement of a first channel from each of the plurality of second wireless apparatuses that communicate with each other via the first channel; and a control circuit for executing a first process when the result of the measurement is lower than a predetermined quality, wherein the first process causes the communication circuit to transmit a switching instruction to each of the plurality of second wireless apparatuses, to establish a second channel between the wireless apparatus and each of the plurality of second wireless apparatuses, and to switch wireless communication between each of the plurality of second wireless apparatuses via the first channel to wireless communication via the second channel.