Application Relay Mode Selection for Secure and Continuous D2D Links
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Solution Overview
Problem
The challenge of selecting an appropriate relay mode between layer-2 and layer-3 relay modes in device-to-device communication scenarios is unresolved, affecting data security, service continuity, and quality of service.
Innovation Solution
A communication method where a remote terminal receives policy information to determine a relay mode based on supported modes and application requirements, enabling selection of the most suitable relay mode for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If layer-2 relay mode is used for indirect communication, then service continuity and network control are improved, but data security and relay flexibility deteriorate
Solution Approach 1:
The system dynamically selects between layer-2 and layer-3 relay modes based on real-time conditions. The network side device determines the relay mode by considering factors such as data security requirements, service continuity needs, and relay terminal capabilities, allowing the communication system to adapt flexibly to different scenarios rather than being fixed to a single mode
Solution Approach 2:
The invention changes the operational parameters of the relay system by introducing a mode selection mechanism that switches between layer-2 and layer-3 relay modes. This allows the system to adjust its security and continuity parameters based on specific communication requirements, transforming a static relay system into one that can optimize its behavior through parameter changes
2Object-affected harmful factors
If layer-3 relay mode is used for indirect communication, then data security is improved, but service continuity and network control deteriorate
Solution Approach 1:
The system dynamically selects between layer-2 and layer-3 relay modes based on real-time conditions. The network side device determines the relay mode by considering factors such as data security requirements, service continuity needs, and relay terminal capabilities, allowing the communication system to adapt flexibly to different scenarios rather than being fixed to a single mode
Solution Approach 2:
The invention changes the operational parameters of the relay system by introducing a mode selection mechanism that switches between layer-2 and layer-3 relay modes. This allows the system to adjust its security and continuity parameters based on specific communication requirements, transforming a static relay system into one that can optimize its behavior through parameter changes
3Adaptability or versatility
If multiple relay modes coexist, then relay flexibility and adaptability are improved, but system complexity and mode selection difficulty deteriorate
Solution Approach 1:
The network side device acts as an intermediary that handles the complexity of relay mode selection. Instead of requiring the remote terminal to independently determine the optimal relay mode among multiple options, the network side device receives relay mode information from the relay terminal and makes the final determination based on comprehensive factors including data security requirements, service continuity needs, and relay terminal capabilities
Solution Approach 2:
The relay terminal autonomously provides relay mode information and capabilities to the network side device, enabling the network to make informed selection decisions. The relay terminal self-describes its capabilities and the network uses this information to automatically determine the appropriate relay mode without requiring manual configuration or complex local decision-making at the terminal
Data Source
AI summary
This disclosure provides a communication method, apparatus, and system. The method is performed by a remote terminal, which receives first policy information from a policy control function network element, where the first policy information includes a relay mode corresponding to a first application of the remote terminal, determines a first relay mode based on the first policy information, and transmits data of the first application in the first relay mode to a relay device. In the method, the remote terminal selects a relay mode for individual application and deliver data of the individual application in the selected relay mode such that different relay modes can be applied to different applications. In this way, requirements of different applications are met, and collaboration between different relay modes is enabled.