Positioning Reference Signal Scheduling via DCI in Sidelink Networks

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Solution Overview

Problem

In sidelink communication systems where a base station controls resource allocation, there is a need for effective scheduling of positioning reference signal resources for terminal devices.

Innovation Solution

A network device schedules a positioning reference signal resource for a terminal device using downlink control information (DCI), allowing the terminal device to send positioning reference signals on allocated resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If terminal devices autonomously sense and select positioning reference signal resources, then resource allocation flexibility is improved, but resource collision and interference increase

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidpositioning accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The network device acts as an intermediary to coordinate positioning reference signal resource allocation. It receives positioning requests from terminal devices, determines appropriate resources, and allocates them to terminals, thereby avoiding collisions while maintaining flexibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If network device schedules positioning reference signal resources, then resource collision is reduced, but indication overhead increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidindication overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The network device uses existing scheduling mechanisms and message formats for resource allocation, making the positioning reference signal resource allocation utilize universal communication protocols already in place, thereby reducing additional indication overhead.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If positioning reference signal resources are frequently allocated, then positioning performance is improved, but system resource consumption increases

Engineering Contradiction:

Improvepositioning precisionVSAvoidsystem resource consumption

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The network device allocates positioning reference signal resources selectively based on actual positioning needs. It evaluates positioning requests and allocates resources only when necessary, avoiding excessive resource consumption while maintaining positioning performance where required.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20260075621A1Communication method and related apparatus

Publication Date: 2026.03.12 HUAWEI TECH CO LTD

AI summary

A communication method, performed by a first terminal device or a chip in the first terminal device, includes sending a first request to a network device. The first request is for requesting a positioning reference signal resource. The communication method also includes receiving first downlink control information (DCI) from the network device. The first DCI indicates a first positioning reference signal resource scheduled for the first terminal device.