TSN Data Transmission via Delay-Aware Multi-Link Selection
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Solution Overview
Problem
Existing wireless communication standards struggle to support low-latency data transmission across multiple frequency bands/links, particularly in IEEE802.11be, where existing mechanisms fail to efficiently reduce transmission/reception delay.
Innovation Solution
Broadcasting delay parameter information, including AC access delay and BSS load information, through beacon frames to enable stations to select optimal communication links that meet low-latency requirements for Time-Sensitive Networking (TSN) data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple frequency bands/links are aggregated for communication, then bandwidth and throughput are improved, but transmission delay and latency increase
Solution Approach 1:
The patent segments TSN data into different traffic classes (voice, video, best effort, background) and routes them through different links based on their latency requirements. This segmentation allows simultaneous optimization for both high throughput (by utilizing multiple links) and low latency (by prioritizing time-sensitive traffic on appropriate links).
Solution Approach 2:
The patent implements dynamic link selection where stations continuously monitor delay parameter information and adaptively choose the optimal link for each TSN data transmission. This dynamic approach allows the system to respond to changing network conditions and maintain low latency while utilizing multiple frequency bands for high bandwidth.
2Ease of operation
If delay parameter information is broadcasted to all stations, then link selection capability is improved, but network overhead increases
Solution Approach 1:
The patent enables stations to autonomously select optimal links by broadcasting delay parameter information (AC access delay and BSS load) that allows stations to independently evaluate and choose the best link for their TSN data without requiring complex centralized control or additional signaling overhead for link selection decisions.
3Measurement precision
If AC access delay and BSS load information are monitored, then optimal link selection is improved, but device complexity increases
Solution Approach 1:
The patent reduces complexity by having access points pre-calculate and broadcast delay parameter information (AC access delay and BSS load) before stations need to make link selection decisions. This preliminary provision of information allows stations to perform accurate link evaluation without implementing complex real-time monitoring and calculation mechanisms.
Data Source
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AI summary
Disclosed in embodiments of the present invention are a data transmission method and device, and a computer storage medium. The method comprises: receiving delay parameter information of multiple communication connections, the delay parameter information being used for reflecting an access category (AC) access delay situation corresponding to a time sensitive network (TSN) data type under each communication connection; and on the basis of the delay parameter information, sending, on a first communication connection among the multiple communication connections that satisfies a TSN data transmission delay requirement, TSN data to be sent.