Relay UE Split QoS Reporting for Multi-PC5 Connections
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Solution Overview
Problem
The existing wireless communication systems face challenges in managing split quality of service (QoS) settings and reporting in UE-to-UE relays, which are crucial for ensuring reliable and efficient communication between user equipment (UEs) in various scenarios such as vehicle-to-everything (V2X) communication.
Innovation Solution
The proposed solution involves a relay UE establishing PC5 connections with multiple remote UEs, setting split QoS for these connections, and reporting relevant information to the serving base station, including UE identities and QoS details, to facilitate effective resource allocation and end-to-end communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay UE establishes PC5 connections with multiple remote UEs and implements split QoS settings, then communication reliability and service differentiation are improved, but device complexity and management overhead increase
Solution Approach 1:
The patent segments QoS handling into two parts: the relay UE performs basic QoS parameter configuration and forwarding, while the network (gNB) performs centralized QoS rule management and modification. This segmentation reduces the relay UE's complexity burden while maintaining reliable split QoS enforcement across multiple PC5 connections.
Solution Approach 2:
The network (gNB) acts as an intermediary that centralizes complex QoS management functions. Instead of each relay UE independently managing split QoS for multiple remote UEs, the gNB receives QoS modification requests, generates appropriate QoS rules, and distributes them to the relay UE, thereby reducing device complexity while ensuring communication reliability.
2Productivity
If the relay UE reports detailed QoS information for multiple remote UEs to the base station, then network resource allocation efficiency is improved, but signaling overhead and processing time increase
Solution Approach 1:
The relay UE performs preliminary actions by configuring local QoS parameters and maintaining QoS flow binding information before network requests. The UE prepares QoS rule sets and remote UE identification data in advance, allowing the network to quickly retrieve and modify QoS parameters without requiring complete information exchange, thus reducing signaling time while maintaining allocation efficiency.
Solution Approach 2:
The patent extracts only the essential QoS parameters and remote UE identification information needed for network resource allocation, rather than reporting complete QoS configurations. The network receives selective information (QoS flow IDs, remote UE IDs, and key QoS parameters) that enables efficient resource allocation without the signaling overhead of transmitting full QoS profiles.
Data Source
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AI summary
An embodiment relates to an operation method of a relay user equipment (UE) in a UE-to-UE relay in a wireless communication system, the method comprising: establishing, by the relay UE, a first PC5 connection with a first remote UE; establishing, by the relay UE, a second PC5 connection with a second remote UE, wherein the relay UE includes a split QoS related to the first PC5 connection and the second PC5 connection; and reporting, to a serving base station of the relay UE by the relay UE, information for identifying the first remote UE and information for identifying the second remote UE, together with the split QOS related to the second PC5 connection.