Multi-Link Switching Mechanisms for Deterministic Listening
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Solution Overview
Problem
Existing multi-link operations in enhanced multi-link single radio (EML) mode lack predictability in switching back to listening mode after frame exchanges, leading to inefficiencies in bandwidth and latency.
Innovation Solution
Implement a deterministic switching mechanism for multi-link devices that automatically switch back to listening mode on enabled links after a predetermined time, using timeout intervals and spatial streams, suitable for both multi-radio and single-radio devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link operation is implemented in EML mode, then throughput is enhanced and latency is reduced, but the switching mechanism lacks predictability and cannot determine when to switch back to listening mode
Solution Approach 1:
The patent applies preliminary action by pre-establishing deterministic switching rules before frame exchange operations. The system pre-defines timeout intervals and switching conditions, allowing the wireless device to automatically and predictably switch back to listening mode without requiring real-time decisions or complex control mechanisms during operation.
2Quantity of substance
If frame exchange sequence is extended to utilize multiple spatial streams, then data reception capability is improved, but the time to switch back to listening mode increases
Solution Approach 1:
The patent applies continuity of useful action by implementing overlapping frame exchange sequences across multiple spatial streams. The system allows continuous data reception across different links while maintaining predictable switching timing through predetermined timeout intervals, ensuring that the useful action of data reception continues without unnecessary interruptions or delays in switching back to listening mode.
3Loss of time
If deterministic switching mechanism is implemented, then latency is reduced and bandwidth utilization is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the wireless device to automatically manage its own switching between frame exchange and listening modes based on predetermined rules. The device autonomously determines when to switch back to listening mode using built-in timers and timeout intervals, eliminating the need for external control or complex coordination mechanisms while maintaining low latency and high bandwidth utilization.
Data Source
AI summary
Embodiments of the present invention provide an improved switching mechanism for multi-link devices that can perform frame exchanges using multiple spatial streams and automatically switch back to a listening mode on enabled links deterministically for improved throughput and reduced latency. Embodiments of the present invention are suitable for multi-link operations performed using a multi-radio device or a single-radio device. The mechanism includes switching back to a listening operation on a plurality of EML single radio links after end of the frame exchange and after a switch delay time. The end of frame exchange with the AP includes ending frame exchanges after a timeout interval.