Device-to-Device Relay Activation Based on Sidelink Channel Quality

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Solution Overview

Problem

Current wireless communication technologies lack a method for activating or deactivating the device-to-device relay function based on channel quality information between devices.

Innovation Solution

A device-to-device relay processing method where a first device determines the processing manner for the device-to-device relay function by comparing channel quality information parameters with threshold values, activating or deactivating the relay function accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the relay device activates device-to-network relay function based on Uu channel quality thresholds, then network coverage is expanded, but there is no solution for activating or deactivating device-to-device relay

Engineering Contradiction:

Improverelay function activation capabilityVSAvoidrelay control mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent changes the parameter for relay activation from Uu channel quality to sidelink channel quality. The relay device now monitors sidelink channel quality parameters (RSRP, RSRQ, SINR) between itself and neighboring devices to determine whether to activate device-to-device relay function, enabling adaptive relay activation based on actual sidelink conditions rather than network interface conditions alone

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If device-to-device relay is activated based on single threshold comparison, then activation decision is simple, but relay activation stability is insufficient

Engineering Contradiction:

Improverelay activation decisionVSAvoidrelay activation stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent implements continuous monitoring of sidelink channel quality parameters over a duration period. Instead of making a single threshold comparison, the system continuously evaluates whether the channel quality parameters (RSRP, RSRQ, SINR) remain above thresholds for a specified duration, ensuring stable and reliable relay activation decisions that are not based on transient channel conditions

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The patent performs preliminary evaluation of channel quality parameters before activating the relay function. The system pre-establishes threshold values and duration requirements, and continuously monitors sidelink channel conditions in advance to determine the appropriate timing for relay activation, ensuring that activation occurs only when channel conditions are sustainably favorable

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12279202B2Device-to-device relay processing method, device and apparatus, and storage medium

Publication Date: 2025.04.15 DATANG MOBILE COMM EQUIP CO LTD

AI summary

The embodiments of the present application relate to the field of wireless communications, and provide a device-to-device relay processing method, device and apparatus, and a storage medium, which are used for implementing an activation or deactivation function of the device-to-device relay. Said method includes according to channel quality information of a direct link between a first device and at least two second devices, the first device determining a processing manner of the first device for a device-to-device relay function, the processing manner including activating the device-to-device relay function or deactivating the device-to-device relay function.