mmWave Link Status Determination After Beamforming Training

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Solution Overview

Problem

Existing mmWave communication systems face challenges in determining link statuses effectively, leading to inefficiencies and resource waste due to incomplete beamforming training and unreliable link connections.

Innovation Solution

A method for determining link statuses in mmWave communication systems by completing beamforming training and mapping TIDs to links, ensuring reliable communication through multi-link operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If beamforming training is not completed before establishing mmWave link, then link setup speed is improved, but communication reliability deteriorates

Engineering Contradiction:

Improvelink setup speedVSAvoidcommunication reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent applies preliminary action by completing beamforming training before establishing the mmWave link. The system performs beamforming training in advance to determine optimal beam pairs, and only after this training is complete does it establish the link and begin data transmission. This ensures that the link is established with reliable beamforming parameters already in place, resolving the contradiction between fast setup and reliable communication.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If incomplete beamforming training is performed, then training time is reduced, but link status determination accuracy deteriorates

Engineering Contradiction:

Improvetraining timeVSAvoidlink status determination accuracy

Core Design Contradiction:

Loss of timeVSMeasurement precision

Solution Approach 1:

The patent implements feedback mechanisms during beamforming training by exchanging training frames between transmitter and receiver. The receiver provides feedback information about received signal quality and beam performance, allowing the transmitter to adjust and select optimal beam pairs. This iterative feedback process ensures accurate link status determination while maintaining efficient training time through targeted beam selection based on actual channel conditions.

Inventive Principle:

Principle #23Feedback

3Productivity

If mmWave link is established without complete beamforming training, then productivity is improved, but loss of energy increases

Engineering Contradiction:

Improvecommunication productivityVSAvoidenergy waste

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by completing beamforming training before establishing the mmWave link for data transmission. This preliminary training phase identifies the optimal beam pairs that maximize communication efficiency and minimize energy consumption. By establishing the link only after this preparation, the system avoids energy waste from attempting communication with suboptimal beams, thereby improving overall energy efficiency while maintaining high productivity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260040380A1Method for determining link status, and wireless device and chip thereof

Publication Date: 2026.02.05 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

Provided is a method for determining link statuses. The method is performed by a multi-link device (MLD). The method includes: determining a link status of a mmWave link based on whether beamforming training is complete, wherein the link status includes at least one of a first status or a second status.