Multi-Link Block Acknowledgement for Low-Latency Wireless Traffic
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Solution Overview
Problem
The existing Block Acknowledgment (BA) mechanism in wireless communication is limited to single-link operations and needs enhancement for multi-link devices to manage communication efficiently across multiple frequency bands, particularly in scenarios requiring low latency and high throughput.
Innovation Solution
A communication method and device that utilize block acknowledgement policy information to determine the link for sending and receiving message frames based on traffic identifier (TID) requirements, enabling immediate or delayed responses across multiple links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing single-link BA mechanism is used for multi-link communication, then the implementation is simple, but the spectrum utilization efficiency is insufficient and latency requirements cannot be met
Solution Approach 1:
The patent segments the BA mechanism into link-specific operations. Each link can independently establish BA sessions and send/receive BA frames according to its own traffic characteristics. This segmentation allows optimized spectrum utilization on each link while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent extends the single-link BA mechanism into the multi-link dimension by introducing link identification fields and multi-link session management. This dimensional extension enables simultaneous BA operations across multiple frequency bands without fundamentally redesigning the core acknowledgment logic.
2Loss of time
If block acknowledgement policy information is used to determine link selection, then low latency transmission is achieved, but the message frame processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring block acknowledgement policy information in the initial message frames exchanged between devices. This preconfiguration establishes link selection criteria and BA parameters before actual data transmission begins, enabling low-latency acknowledgments without real-time decision complexity.
Solution Approach 2:
The patent implements feedback mechanisms where block acknowledgement policy information is exchanged and confirmed between communicating devices. This feedback loop ensures both devices agree on link selection criteria and BA parameters, reducing processing complexity through predetermined rules while maintaining low latency.
Data Source
AI summary
A method for communication on multiple links, includes: receiving a first message frame, wherein the first message frame includes block acknowledgement policy information; and sending, based on the block acknowledgement policy information, a second message frame on a first link among the multiple links.