Wireless TSN Frame Duplication for Multi-Link Reliability
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Solution Overview
Problem
Current wireless communication technologies lack effective methods for implementing time-sensitive networking standards over wireless networks, particularly for devices operating on multiple links, which can lead to unreliable data transmission in applications requiring deterministic timing and high reliability.
Innovation Solution
The implementation of a method that configures wireless stations and access points to duplicate frames over multiple wireless links when transmission reliability falls below a predetermined threshold, using transmission quality of service information such as Delay Bound and Expected Transmission Reliability values to ensure reliable data transmission in wireless time-sensitive networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication operates on a single band, then device complexity is reduced, but transmission reliability and bandwidth are insufficient for time-sensitive applications
Solution Approach 1:
The patent segments the transmission task by duplicating frames across multiple wireless links (2.4 GHz, 5 GHz, 6 GHz bands) and multiple access points. Each link operates independently, and the receiving device reconstructs the original data from any successful transmission, thereby improving reliability without requiring complex coordination protocols.
Solution Approach 2:
The patent applies different transmission strategies to different wireless links based on their specific characteristics. Each link can be configured with appropriate modulation schemes, data rates, and reliability parameters suited to its band characteristics, allowing optimized local performance while maintaining overall system reliability.
2Productivity
If multi-link operation is implemented to increase bandwidth, then network throughput improves, but transmission reliability for time-sensitive data deteriorates due to lack of deterministic timing
Solution Approach 1:
The patent performs preliminary configuration of transmission parameters, including frame duplication settings, link selection criteria, and timing synchronization, before actual time-sensitive data transmission. This pre-configuration ensures that when time-critical data needs to be transmitted, the multi-link infrastructure is already prepared and synchronized, providing deterministic timing guarantees.
Solution Approach 2:
The patent implements feedback mechanisms where transmission status, link quality, and timing information are continuously monitored and reported. This feedback enables dynamic adjustment of frame duplication strategies and link selection to maintain both high throughput and reliable transmission for time-sensitive applications.
3Reliability
If frame duplication is performed over multiple wireless links, then transmission reliability improves, but energy consumption increases
Solution Approach 1:
The patent implements partial frame duplication where not all frames are duplicated across all links. Instead, duplication is applied selectively based on the criticality of the data, current link conditions, and QoS requirements. This partial action approach achieves sufficient reliability for time-sensitive applications while avoiding the excessive energy consumption of universal duplication.
Solution Approach 2:
The patent dynamically adjusts the frame duplication strategy based on real-time link quality, traffic patterns, and energy availability. The system can transition between different duplication modes (no duplication, selective duplication, full duplication) to optimize the trade-off between reliability and energy consumption for battery-powered devices.
Data Source
AI summary
Embodiments of the present invention provide systems, devices and methods of wireless communications that improve transmission reliability for time sensitive traffic over multiple wireless communication links in a wireless TSN. The transmitting device can be configured for uplink QoS transmission according to transmission QoS information (e.g., a traffic profile) received from a TSN configuration server or from an application running on the transmitting device. For uplink transmission, the transmitting device can be a wireless STA or STA MLD operating over multiple wireless links to communicate with one or more wireless TSN-capable APs. The transmitting device can duplicate a frame for transmission when the measured transmission reliability is below a predetermined threshold of transmission reliability requirement. For downlink transmission, the transmitting device can be an AP MLD in communication with a TSN capable non-AP MLD for transmitting a duplicate transmission.