Multi-Link mmWave Link Status Control After Beamforming Training
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Solution Overview
Problem
mmWave communication suffers from short transmission distance, susceptibility to attenuation, and vulnerability to obstruction, affecting communication quality.
Innovation Solution
A method for determining link statuses and transmitting frames using a multi-link device (MLD) that includes determining a link status based on completed beamforming training and transmitting frames on a mmWave link with at least one traffic identifier (TID) mapped, ensuring beamforming training is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If mmWave communication is used to achieve high data rates, then communication speed is improved, but transmission distance becomes short and susceptibility to attenuation increases
Solution Approach 1:
The patent segments the communication link into multiple links (first link and second link) operating at different frequencies. The mmWave link (first link) provides high-speed data transmission, while the sub-7GHz link (second link) provides reliable control and management functions. This segmentation allows the system to achieve high data rates on mmWave while maintaining overall transmission reliability through the more robust sub-7GHz link.
2Reliability
If beamforming training is performed to improve link quality, then communication quality is improved, but system complexity and training time increase
Solution Approach 1:
The patent performs beamforming training preliminarily on the sub-7GHz link (second link) before establishing the mmWave link (first link). The MLD and AP MLD complete beamforming training and determine link statuses on the more robust sub-7GHz link first, then use this established link to support mmWave communication. This preliminary action on the reliable sub-7GHz link reduces the overall system complexity and training time required for the more challenging mmWave beamforming.
Data Source
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AI summary
Provided are a method for determining link statuses, and a wireless device thereof, which relate to the technical field of communications. 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.