Relay Node Authorization for URLLC Path Redundancy
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving ultra-reliable low latency communications (URLLC) due to issues with reliability and coverage, particularly when replicating protocol data units on the same path does not enhance communication reliability, and mobility management is affected by poor network coverage.
Innovation Solution
The implementation of a proximity service interface (PC_5) allows user equipment (UE) to act as relay nodes, with authorization procedures through the network, creating alternative communication paths between UE devices and the network, enabling data replication and control plane signaling over secondary paths for enhanced reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If protocol data units are replicated on the same path, then data redundancy is increased, but communication reliability is not enhanced
Solution Approach 1:
The patent transitions from replicating data on the same path (one-dimensional redundancy) to using alternative paths through relay nodes (multi-dimensional redundancy). This spatial dimensionality change allows data to traverse different physical routes, thereby enhancing reliability when one path fails while maintaining data redundancy.
Solution Approach 2:
The patent introduces relay nodes as intermediary entities that establish alternative communication paths. These intermediaries enable data to be routed through different nodes and paths, transforming the single-path replication approach into a multi-path transmission system that actually improves communication reliability.
2Reliability
If alternative communication paths are created through relay nodes, then communication reliability is improved, but network complexity is increased
Solution Approach 1:
The patent enables user equipment to autonomously select and establish relay nodes without requiring complex centralized path management. The UE performs self-service by identifying suitable relay nodes and establishing alternative paths independently, thereby improving reliability while minimizing the complexity overhead on the network infrastructure.
Solution Approach 2:
The patent changes the parameter of path selection from static network-controlled routing to dynamic UE-autonomous selection. This parameter change allows the system to adapt to varying network conditions and reliability requirements without implementing complex centralized path management mechanisms.
3Area of stationary object
If user equipment acts as relay nodes, then coverage is extended and mobility management is improved, but authorization and security management become more difficult
Solution Approach 1:
The patent implements a universal authorization framework where relay nodes can be authorized through existing network authentication mechanisms. The same authorization procedures used for regular network access are extended to relay node functionality, allowing coverage extension without creating separate complex authorization systems.
Solution Approach 2:
The patent uses the network infrastructure as an intermediary to manage authorization of relay nodes. Rather than requiring direct peer-to-peer authorization between UEs, the network acts as a trusted intermediary that verifies and authorizes relay node status, thereby extending coverage while maintaining manageable security protocols.
Data Source
AI summary
An apparatus including means for receiving, from a first user equipment associated with a network via a first path, a request at a second user equipment associated with the network, for the second user equipment to act as a relay node for the first user equipment acting as a master node to provide a second path between the first user equipment and the network, wherein the first user equipment and the second user equipment are connected using a proximity service interface, performing, at the second user equipment, an authorisation procedure with the network to act as a relay node for the first user equipment and providing an indication to the first user equipment that the second user equipment is authorised to act as a relay node for the first user equipment.