Sidelink Signal Priority Handling for PC5 Resource Conflicts

Solution Overview

Problem

Existing LTE sidelink communication systems face resource conflicts during transmission or reception of synchronization signals and channels, leading to link communication failures without specified solutions in current protocols.

Innovation Solution

A method to determine and prioritize the transmission of sidelink synchronization signals and broadcast channels based on signal types, priority parameters, and radio access technologies, allowing preferential transmission or reception of higher-priority signals to resolve conflicts and improve communication reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sidelink synchronization signal transmission is performed through PC5 interface, then synchronization function is achieved, but resource conflict with other channels/signals occurs causing link communication failure

Engineering Contradiction:

Improvelink communication reliabilityVSAvoidresource conflict

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by determining transmission priorities of different signals and channels before actual transmission occurs. The terminal device pre-establishes a priority relationship between sidelink synchronization signals, physical sidelink broadcast channels, and other channels/signals, and makes advance decisions on which signals to transmit or receive when resource conflicts are detected. This prevents link communication failures by resolving conflicts before they occur.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If multiple signals are transmitted at adjacent time intervals, then communication efficiency is improved, but resource conflict between signals occurs

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidsignal transmission reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by determining transmission priorities of different signals and channels before actual transmission occurs. The terminal device pre-establishes a priority relationship between sidelink synchronization signals, physical sidelink broadcast channels, and other channels/signals, and makes advance decisions on which signals to transmit or receive when resource conflicts are detected. This prevents link communication failures by resolving conflicts before they occur.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4057712B1Signal transmission method and communication device

Publication Date: 2025.12.03 VIVO MOBILE COMM CO LTD

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AI summary

Provided are a signal transmission method and a communication device. The method comprises: when the transmission of a first signal conflicts with the transmission of a second signal, determining a transmission priority; and according to the transmission priority, prioritising sending or receiving the first signal or prioritising sending or receiving the second signal, wherein the first signal comprises a signal carried by an SLSS or a PSBCH.