Relay Session Establishment with Privacy-Preserving Service Codes
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Solution Overview
Problem
Existing session establishment methods in 5G networks do not ensure the privacy of traffic data during relay communication, particularly in layer 3 UE-to-network relay functions.
Innovation Solution
Introduce the concept of a relay service code (RSC) to characterize traffic attributes, allowing remote devices to determine and establish relay sessions with devices that support or are authorized to support the specific RSC, ensuring privacy by matching RSCs during the discovery process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional session establishment methods are used in 5G relay communication, then the network architecture can support both 3GPP and non-3GPP access technologies, but the privacy of traffic data cannot be ensured
Solution Approach 1:
The patent segments the traffic characterization by introducing relay service codes (RSCs) that divide traffic into distinct categories based on characteristics such as application identification, domain information, and IP address. This segmentation enables selective relay session establishment for specific traffic types while maintaining privacy, as only relevant RSCs are exchanged during discovery rather than exposing complete traffic data.
Solution Approach 2:
The relay service code acts as an intermediary element between the remote UE and the network. Instead of directly exchanging detailed traffic attributes or full session parameters, the RSC serves as a mediator that characterizes traffic types and enables privacy-preserving relay session establishment, thus protecting traffic data privacy while simplifying the interaction protocol.
2Object-affected harmful factors
If relay service codes are introduced to ensure traffic attribute privacy, then data transmission security is improved, but the discovery and establishment process becomes more complex
Solution Approach 1:
The patent extracts only the essential traffic characterization information needed for relay session establishment by defining relay service codes that capture key traffic attributes (application identification, domain information, IP address characteristics). This extraction approach ensures privacy by including only necessary RSC information in discovery messages, avoiding the exposure of complete traffic data while enabling proper relay selection.
3Adaptability or versatility
If multiple relay devices broadcast their supported relay service codes, then the remote device can select an appropriate relay, but the number of discovery messages increases
Solution Approach 1:
The relay service code serves multiple functions simultaneously: it characterizes traffic attributes, enables relay device discovery, facilitates relay selection, and ensures privacy protection. By making the RSC a multi-functional element that is broadcast once per relay device, the patent reduces the overall quantity of discovery messages needed compared to exchanging multiple separate parameters, while still providing comprehensive relay selection capability.
Data Source
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AI summary
The present application provides a relay session establishing method and apparatus, a device, and a storage medium. This solution provides a method for discovering a relay device by means of a relay service code and establishing a relay session. A remote device determines, according to description information of traffic, a relay service code that is used for indicating an attribute of the traffic, and discovers an appropriate relay device according to the relay service code, and then establishes a relay session with the relay device, so as to transmit data of the traffic. In this solution, the privacy of traffic attribute can be ensured during the process of discovering the relay device.