Relay UE Managing Multiple PC5 Connections for U2U Relay
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently supporting UE-to-UE relay communication, particularly in establishing and managing multiple target end UEs for relay operations within a wireless communication system.
Innovation Solution
A method and device for a relay end UE that establishes multiple 2nd hop PC5 connections with target end UEs, while maintaining a 1st hop PC5 connection with the source end UE, to facilitate efficient UE-to-UE relay communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a relay UE establishes multiple 2nd hop PC5 connections with target end UEs, then the productivity and communication efficiency are improved, but the device complexity and management overhead increase
Solution Approach 1:
The patent segments the relay communication into two distinct hops: 1st hop PC5 connection between source end UE and relay UE, and 2nd hop PC5 connections between relay UE and multiple target end UEs. This segmentation allows the relay UE to independently manage each connection leg, reducing overall system complexity while enabling multiple simultaneous communications.
Solution Approach 2:
The relay UE is designed with multi-functionality to simultaneously maintain a 1st hop PC5 connection with source end UE and multiple 2nd hop PC5 connections with different target end UEs. This universal capability allows a single relay UE to serve multiple communication pairs, improving productivity without proportionally increasing device complexity.
2Adaptability or versatility
If the relay UE maintains 1st hop PC5 connection with source end UE and multiple 2nd hop PC5 connections with target end UEs, then the adaptability and service support are improved, but the use of energy and resource consumption increase
Solution Approach 1:
The patent introduces a hierarchical dimension to relay communication by organizing connections into 1st hop and 2nd hop PC5 connections. This dimensional organization allows the relay UE to efficiently manage multiple target end UEs through structured connection layers, improving adaptability while optimizing energy usage through systematic resource allocation.
Solution Approach 2:
The relay UE acts as an intermediary between source end UE and multiple target end UEs, establishing 1st hop PC5 connections with source and 2nd hop PC5 connections with targets. This intermediary role enables versatile service support including voice over IP and multimedia by mediating communication between different UEs, while energy consumption is managed through the structured hop-based connection framework.
Data Source
AI summary
A method and device for a relay end UE are disclosed. The relay UE receives a first message from a source end UE, wherein the first message establishes a 1st hop PC5 connection with the relay UE for supporting UE-to-UE (U2U) relay communication with any target end UE. The relay UE establishes a first 2nd hop PC5 connection with a first target end UE for supporting the U2U relay communication with the source end UE. The relay UE establishes a second 2nd hop PC5 connection with a second target end UE for supporting the U2U relay communication with the source end UE. The relay UE sends a second message to the source end UE, wherein the second message is to complete establishment of the 1st hop PC5 connection and includes a user info of the first target end UE and a user info of the second target end UE.