PC5 Relay UE Local ID Mapping for Multi-UE Interference Control

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing local ID allocation for multiple end UEs in UE-to-UE relay communication, particularly in 5G networks, which can lead to interference and suboptimal connectivity.

Innovation Solution

A method and apparatus for enhancing local ID allocation by implementing a relay UE that establishes UE-to-UE relay communications and sends PC5 Radio Resource Control messages with mapped local UE Identifiers, optimizing layer-2 ID assignments for improved connectivity and reduced interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional mobile voice communication networks are used, then voice communication is supported, but data communication capability is insufficient

Engineering Contradiction:

Improvecommunication service typeVSAvoiddata throughput

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The system dynamically evolves from traditional voice communication networks to IP-based data communication networks, allowing the network to adapt its functionality based on service requirements. The E-UTRAN system is designed to support both voice and data services with dynamic resource allocation and service adaptation capabilities.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The network transitions by changing key parameters including switching from circuit-switched voice protocols to packet-switched IP protocols, increasing data throughput capabilities, and modifying network architecture to support multimedia and on-demand services while maintaining backward compatibility.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If existing local ID allocation methods are used in UE-to-UE relay communication, then communication between UEs is enabled, but interference occurs and connectivity is suboptimal

Engineering Contradiction:

ImproveUE-to-UE relay communication capabilityVSAvoidinterference

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent implements differentiated local ID allocation strategies for different target UEs based on their specific communication requirements, channel conditions, and interference environments. Each target UE receives optimized local ID assignments tailored to its local context, improving connectivity while minimizing interference specific to each communication pair.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The relay UE performs preliminary local ID allocation and mapping configuration before actual data transmission begins. This advance planning allows the system to optimize ID assignments based on predicted interference patterns and connectivity requirements, preventing interference issues before they occur during active communication.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12543227B2Method and apparatus for enhancing local ID allocation for multiple end UEs for UE-to-UE relay communication in a wireless communication system

Publication Date: 2026.02.03 ASUS TECH LICENSING INC

AI summary

A method and device for a relay User Equipment (UE) are disclosed. In one embodiment, the relay UE establishes a first UE-to-UE (U2U) relay communication between a source end UE and a first target end UE and a second U2U relay communication between the source end UE and a second target end UE. The relay UE also sends a PC5 Radio Resource Control (RRC) message to the source end UE, wherein the PC5 RRC message includes a list information indicating at least one of a first mapping of a first local UE Identity (ID) and a first layer-2 ID for the first target end UE and a second mapping of a second local UE ID and a second layer-2 ID for the second target end UE.