D2D Controller Dynamic Mode Switching for High-Speed Stability
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Solution Overview
Problem
Network-controlled Device-to-Device (D2D) communication in wireless networks becomes unstable and prone to failure when devices move at high speeds, leading to temporary connections and communication disruptions.
Innovation Solution
A method where a D2D controller dynamically switches the communication mode between devices to either cellular communication or device-controlled D2D mode based on the speed threshold of the devices, ensuring stable communication by configuring the first device to use a suitable communication mode when its speed exceeds a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network-controlled D2D communication is used, then communication stability is improved, but device adaptability to high-speed scenarios deteriorates
Solution Approach 1:
The patent implements dynamic communication mode switching between network-controlled D2D mode and device-controlled D2D mode based on device speed. When device speed exceeds a threshold, the system switches to device-controlled mode to maintain communication stability, thus adapting the system behavior to changing operational conditions.
Solution Approach 2:
The system changes the communication mode parameter based on device speed threshold. By monitoring speed and switching modes accordingly, the system optimizes communication performance for different mobility scenarios, resolving the contradiction between network control stability and high-speed adaptability.
2Adaptability or versatility
If device-controlled D2D mode is used for high-speed devices, then adaptability to high-speed scenarios is improved, but communication stability deteriorates
Solution Approach 1:
The system dynamically adjusts communication mode based on real-time speed conditions. For high-speed devices exceeding the threshold, device-controlled mode is activated to improve adaptability, while for low-speed devices, network-controlled mode maintains stability, thus resolving the contradiction through conditional mode selection.
3Reliability
If communication mode switching is implemented, then communication stability is improved, but device complexity increases
Solution Approach 1:
The system introduces a speed threshold parameter as an intermediary decision criterion for mode switching. This simple intermediary enables automatic mode selection based on speed conditions, improving communication stability while adding minimal complexity through a clear, rule-based switching mechanism.
Data Source
AI summary
A method in a D2D controller for sending a configuration message to use a communication mode to a first device, wherein the first device is configured to enable communication with a second device through a network-controlled D2D communication mode, wherein the D2D controller, the first device and the second device are comprised in a wireless network, and wherein the method comprises: obtaining (201) a first speed of the first device with respect to the D2D controller, and, when the first speed exceeds a first threshold, sending (207) a first configuration message to the first device to use a first communication mode, wherein the first communication mode is one of the following communication modes: a cellular communication mode, and a device-controlled D2D mode. A method in the first device for configuring the first device to use a communication mode, according to a message received from the D2D controller.