Sidelink Coordination Indication for Resource Conflict Avoidance

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Solution Overview

Problem

Current wireless communication systems lack effective mechanisms to indicate unavailable resources, leading to inefficiencies and potential collisions in sidelink communications between user equipment (UEs) without a central scheduler.

Innovation Solution

Implementing a coordination indication mechanism where UEs can transmit and receive explicit or implicit indications of resource availability statuses, allowing them to communicate on sidelinks or uplinks based on these statuses, thereby avoiding resource conflicts and optimizing resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If UEs communicate on sidelink without a central scheduler, then communication autonomy and flexibility are improved, but resource conflicts and collisions increase

Engineering Contradiction:

Improvecommunication autonomyVSAvoidresource conflict avoidance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

UEs perform sensing operations before resource selection to identify available resources and transmit coordination indications to inform other UEs of their resource intentions. This preliminary action allows autonomous UEs to coordinate resource usage without central scheduling, reducing collisions while maintaining communication freedom

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where UEs transmit coordination indications about their resource availability and reception capabilities. Other UEs use this feedback information to adjust their resource selections, creating a distributed feedback loop that resolves resource conflicts without central control

Inventive Principle:

Principle #23Feedback

2Measurement precision

If UEs transmit coordination indications frequently, then resource selection accuracy is improved, but power consumption increases

Engineering Contradiction:

Improveresource availability information accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

UEs transmit coordination indications periodically rather than continuously, at intervals sufficient to provide accurate resource availability information while allowing power savings during intervals between transmissions. This periodic action balances information freshness with energy conservation

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

UEs transmit coordination indications selectively based on changing conditions rather than always transmitting. When resource availability or reception capabilities change, UEs transmit updates; when conditions remain stable, transmissions are reduced or omitted, providing sufficient information accuracy with reduced power consumption

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20220361213A1Indication of unavailable resources

Publication Date: 2022.11.10 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a coordination indication identifying a set of availability statuses for a set of resources, wherein the coordination indication is an explicit indication or an implicit indication. The UE may communicate on a sidelink or an uplink in accordance with the set of availability statuses. Numerous other aspects are described.