Sidelink Resource Set Signaling for Half-Duplex Interference Avoidance

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Solution Overview

Problem

Existing D2D communication systems face issues such as the half-duplex problem and hidden node problem when terminal devices independently select transmission resources, leading to transmission failures and interference.

Innovation Solution

A method where a first terminal device sends indication information to a second terminal device to determine a resource set based on resource attribute information, allowing the second terminal device to select transmission resources that avoid interference and half-duplex issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If terminal devices independently select transmission resources from a pre-configured resource pool, then device autonomy and operation simplicity are improved, but transmission failures and interference occur due to half-duplex problems and hidden node problems

Engineering Contradiction:

Improvedevice autonomyVSAvoidtransmission success rate

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent introduces a network device as an intermediary that coordinates resource selection between terminal devices. The network device receives resource selection information from the first terminal device, determines an appropriate resource set, and notifies the second terminal device. This intermediary mechanism resolves the half-duplex and hidden node problems by centralizing coordination, thereby maintaining device autonomy while improving transmission reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If terminal devices independently select transmission resources, then system complexity is reduced, but interference and collisions increase leading to transmission failures

Engineering Contradiction:

Improveresource selection mechanismVSAvoidinterference and collisions

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism where the first terminal device sends resource selection information to the network device, which then determines and notifies the second terminal device of the selected resource set. This feedback loop allows the system to maintain simple terminal device operations while centrally managing interference and collisions through coordinated resource allocation, thus reducing harmful factors without significantly increasing overall system complexity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12526774B2Sidelink resource indication information determination method, first terminal device, and second terminal device

Publication Date: 2026.01.13 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

The present application relates to a resource determination method, a first terminal device, a second terminal device, a chip, a computer readable storage medium, a computer program product, and a computer program. The method includes: a first terminal device sends first indication information to a second terminal device, wherein the first indication information is used for indicating a resource set, and the resource set is determined on the basis of resource attribute information, and the resource set is used for determining a transmission resource of the second terminal device.