Sidelink Ranging Resource Allocation via SCI Indication

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing NR Sidelink communication system lacks dedicated resources for Sidelink ranging signals, leading to potential interference and reduced accuracy in distance and angle measurements between user devices, as existing channels are not designed for ranging purposes and do not consider resource allocation for Sidelink signals.

Innovation Solution

A resource allocation method where a user device reserves and indicates specific resources for sending Sidelink ranging signals, using Sidelink Control Information (SCI) to explicitly or implicitly indicate reserved resources, thereby reducing interference and improving ranging accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing NR Sidelink communication channels are used for ranging signals, then the system can maintain simplicity in resource allocation, but interference increases and ranging accuracy decreases

Engineering Contradiction:

Improveranging accuracyVSAvoidinterference

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent segments the Sidelink resource pool by dedicating specific time-frequency resources exclusively for ranging signals, separating them from data transmission resources. This segmentation prevents interference between ranging signals and data transmissions, thereby improving ranging accuracy without compromising system simplicity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces reserved resource indication information as an intermediary mechanism that explicitly designates resources for ranging signals. This intermediary layer coordinates resource allocation between ranging and data transmission, eliminating interference while maintaining efficient resource management

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If dedicated reserved resources are allocated for Sidelink ranging signals, then ranging accuracy improves, but resource allocation complexity increases

Engineering Contradiction:

Improveranging accuracyVSAvoidresource allocation complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-reserving specific time-frequency resources for ranging signals before actual ranging operations occur. This advance reservation simplifies the allocation process during runtime, as resources are already designated and do not require complex dynamic allocation algorithms

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The reserved resource indication information serves as an intermediary that simplifies resource allocation by providing explicit guidance on which resources are designated for ranging. This intermediary mechanism reduces the complexity of resource management by eliminating the need for complex arbitration between ranging and data transmission needs

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20240205947A1Resource allocation method and apparatus, and storage medium

Publication Date: 2024.06.20 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

The present disclosure relates to a resource allocation method and a device. The resource allocation method is performed by a first user device. The method includes: sending first reserved resource indication information, wherein the first reserved resource indication information is configured for indicating a first reserved resource, and the first reserved resource is a reserved resource used by the first user device for subsequent sending of a Sidelink ranging signal.