L2 UE Relay Session Offloading for Secure Low-Latency Handover
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, face challenges in efficiently managing session terminations and processing tasks between devices with varying capabilities, leading to suboptimal performance due to latency and security issues in user plane session offloading, especially in tethering-based solutions.
Innovation Solution
Implementing a system where session offloading is controlled by either the remote UE, relay UE, or network entities, ensuring end-to-end security and quality of service by maintaining user plane sessions directly between the remote UE and the network via a relay UE, utilizing layer 2 relay protocols to handle data processing tasks efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If session termination points are relocated between wireless devices, then processing task handover efficiency is improved, but session continuity and security may deteriorate
Solution Approach 1:
The patent applies preliminary action by establishing a relay connection between the first wireless device and the network before executing the session termination point relocation. This preliminary relay connection ensures that data transmission paths are pre-established, allowing the session to be relocated between devices while maintaining continuous connectivity and security through the relay infrastructure.
2Loss of time
If user plane session offloading is implemented, then latency is reduced, but security and QoS control may worsen
Solution Approach 1:
The patent introduces a relay connection as an intermediary between the first wireless device and the network for user plane session offloading. This relay connection acts as a mediator that enables data to be forwarded between devices while maintaining end-to-end security and quality of service control through the relay infrastructure, thus reducing latency without compromising security or QoS.
Solution Approach 2:
The patent applies parameter changes by relocating session termination points between different wireless devices, which changes the network topology parameters. This allows the system to optimize latency by selecting optimal relay paths while maintaining security and QoS through updated session management parameters in the relay connection.
3Productivity
If relay connection is established for session offloading, then processing tasks can be offloaded, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the first wireless device to autonomously establish a relay connection with the network for session offloading purposes. The device independently manages the relay connection setup and utilizes it for processing task offloading, reducing the need for complex centralized control while maintaining the ability to offload tasks efficiently.
Data Source
AI summary
A remote UE or a relay UE may identify a configuration for a relocation of one or more session termination points associated with one or more radio access packet data sessions from the relay UE to the remote UE or from the remote UE to the relay UE. The remote UE or the relay UE may execute the relocation of the one or more session termination points associated with the one or more radio access packet data sessions from the relay UE to the remote UE or from the remote UE to the relay UE based on the configuration. The session termination point relocation may be controlled by the remote UE, the relay UE, or a network entity. The remote UE may transmit or receive data with a network via the relay UE based on the relocation of the one or more session termination points.