D2D Communication Mode Switching via Link Quality Feedback
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Solution Overview
Problem
Current D2D communication technologies in cellular systems fail to effectively switch between D2D communication mode and base station-controlled communication mode, leading to inefficient utilization of spectrum resources.
Innovation Solution
A method and apparatus for communication mode switching, where state information such as link quality and distance parameters between UE devices are used to dynamically switch between D2D communication mode and base station communication mode, enabling efficient spectrum resource utilization by adjusting communication modes based on preset thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If D2D communication mode is used, then spectrum utilization is improved, but communication reliability deteriorates when link quality is poor
Solution Approach 1:
The system dynamically switches between D2D communication mode and base station communication mode based on real-time link quality state information. When link quality is good, D2D mode is used for high spectrum utilization; when link quality deteriorates below a threshold, the system switches to base station mode to ensure communication reliability, thus resolving the contradiction between spectrum utilization and communication reliability.
2Reliability
If switching mechanism is added, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The system employs a feedback mechanism where the receiving end device detects link quality state information and sends feedback to the transmitting end. Based on this feedback, the transmitting end automatically switches between communication modes. This feedback-driven approach improves communication reliability while keeping the switching mechanism relatively simple and manageable.
3Productivity
If automatic switching is implemented, then spectrum resource utilization is improved, but control complexity increases
Solution Approach 1:
The system implements self-service automatic switching where the transmitting end device autonomously decides when to switch between D2D and base station communication modes based on received link quality state information. This self-service mechanism improves spectrum resource utilization by automatically selecting the optimal mode without requiring complex centralized control, thus resolving the contradiction between productivity and control complexity.
Data Source
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AI summary
Embodiments of the present invention provide a method and an apparatus for communication mode switching. The method includes: acquiring state information of a device-to-device link between a first UE and a second UE; implementing a switching between a first communication mode and a second communication mode according to the state information of the device-to-device link between the first UE and the second UE, where the first UE and the second UE perform device-to-device communication under the first communication mode, and the first UE communicates with the second UE via a base station under the second communication mode. According to embodiments of the present invention, a switching between a D2D communication mode and a communication mode in which the communication is realized via a base station can be implemented according to the state information of the link between D2D devices, so that spectrum resources of a cellular system can be utilized effectively.