Sidelink Resource Selection Across Multiple Pools Using Auxiliary Sets

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Solution Overview

Problem

Existing sidelink communication technologies, particularly in 3GPP Rel-16, struggle with effective resource coordination when user equipment is configured with multiple sidelink resource pools, lacking methods for efficient inter-user coordination.

Innovation Solution

A method and apparatus for selecting resources in sidelink communication systems, where devices coordinate resources by using auxiliary time and frequency resource sets indicated through sidelink control signaling, allowing selection from multiple configured sidelink resource pools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple sidelink resource pools are configured for user equipment, then resource selection flexibility and adaptability are improved, but inter-user coordination complexity increases and resource selection reliability deteriorates

Engineering Contradiction:

Improveresource selection flexibilityVSAvoidresource selection reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces auxiliary time and frequency resource sets as intermediary structures that mediate between multiple sidelink resource pools. These auxiliary resource sets serve as coordination information carriers, enabling user equipment to share resource selection preferences and constraints with neighboring devices, thereby improving resource selection reliability while maintaining flexibility across multiple resource pools.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements feedback mechanisms where user equipment transmits auxiliary time and frequency resource set information to neighboring devices. This feedback loop allows devices to learn from each other's resource selection experiences and adjust their own resource selection decisions, improving overall system reliability and reducing collisions in multi-resource-pool environments.

Inventive Principle:

Principle #23Feedback

2Reliability

If resource coordination methods are enhanced for multiple sidelink resource pools, then resource selection reliability is improved, but system complexity increases

Engineering Contradiction:

Improveresource selection reliabilityVSAvoidcoordination system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the resource coordination function by introducing separate auxiliary time and frequency resource sets that are distinct from the main sidelink resource pools. This segmentation allows the coordination mechanism to be implemented as a modular component, reducing overall system complexity while improving reliability through specialized coordination structures.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies preliminary action by having user equipment pre-configure and transmit auxiliary time and frequency resource set information before actual resource selection occurs. This advance preparation enables neighboring devices to make more informed resource selection decisions, improving reliability without requiring complex real-time coordination algorithms.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If inter-user coordination is enabled across multiple sidelink resource pools, then resource selection reliability is improved, but communication delays increase

Engineering Contradiction:

Improveresource selection reliabilityVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements periodic action by establishing regular transmission opportunities for auxiliary time and frequency resource set information. Instead of continuous coordination, the system uses periodic signaling intervals where devices exchange resource selection information, achieving reliable coordination while minimizing delays through efficient periodic updates rather than continuous communication.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12538272B2Method for selecting resource, apparatus for selecting resource, and storage medium

Publication Date: 2026.01.27 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A resource selection method, includes: receiving first direct connection control signaling sent by a second device by using a first direct connection resource pool, the first direct connection control signaling comprising an indication of an auxiliary time-frequency resource set, and the auxiliary time-frequency resource set belonging to a second direct connection resource pool and being used for assisting a first device in resource selection; and selecting a direct connection transmission resource in a third direct connection resource pool on the basis of the auxiliary time-frequency resource set.