Bidirectional Wi-Fi Operating Mode Negotiation for Lower Switching Latency
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Solution Overview
Problem
The existing 802.11ax standard's operating mode indication mechanism lacks flexibility, leading to poor operating mode switching and low service transmission efficiency in Wi-Fi devices.
Innovation Solution
A communication method that allows both the first and second devices to actively initiate operating mode negotiation based on data transmission conditions, such as data amount or latency requirements, and includes frames with operating mode parameters to facilitate timely and efficient switching between different bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only the STA initiates OM negotiation in the conventional OMI mechanism, then the protocol complexity is reduced, but the flexibility of operating mode switching deteriorates and service transmission efficiency becomes low
Solution Approach 1:
The patent inverts the conventional OMI mechanism by enabling both STA and AP to initiate operating mode negotiation, rather than only the STA. This bidirectional negotiation capability allows either device to proactively request mode changes based on their own buffer status and channel conditions, significantly improving flexibility while maintaining manageable protocol complexity through standardized frame structures
Solution Approach 2:
The patent implements dynamic operating mode switching where both STA and AP can independently initiate negotiation based on real-time conditions such as buffer status, traffic load, and channel quality. This dynamic approach allows the system to adapt to changing conditions from either device's perspective, enhancing flexibility without requiring complex centralized control
2Productivity
If the first device switches from listening state to data transmission state with large data amount, then service transmission efficiency is improved, but switching latency increases without timely mode negotiation
Solution Approach 1:
The patent applies preliminary action by enabling devices to initiate operating mode negotiation before actual data transmission begins. When either STA or AP detects large data amounts in their buffers, they can proactively send OM negotiation frames to switch to appropriate transmission modes (such as MU-MIMO or wider bandwidth) before the data needs to be transmitted, avoiding last-minute switching delays
Solution Approach 2:
The patent implements feedback mechanisms where both STA and AP monitor their own buffer status, traffic load, and channel conditions, then use this information to trigger OM negotiation when conditions warrant mode changes. This feedback-driven approach ensures mode switching occurs at optimal times to maximize transmission efficiency while minimizing latency
3Productivity
If operating mode switching is delayed without proactive negotiation, then protocol simplicity is maintained, but air interface utilization deteriorates and channel preemption occurs
Solution Approach 1:
The patent enables both STA and AP to self-initiate operating mode negotiation based on their own conditions without requiring the other device to trigger it. This self-service capability allows each device to independently assess its buffer status and channel conditions, then proactively negotiate mode changes to optimize air interface utilization and prevent channel preemption issues
Data Source
AI summary
This application relates to the communication field, and in particular, to a communication method and apparatus, and a computer-readable storage medium, and is applicable to a sensing sensing system, and further applicable to a system that complies with the IEEE 802.11 system standards, for example, 802.11bf, 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or a next-generation standard thereof, for example, 802.11be or a further next-generation standard, a wireless personal local area network system based on ultra-wideband UWB, or the like. This application provides the communication method and apparatus. The method includes: A first device establishes a wireless communication link with a second device, where the first device operates in a first operating mode. The first device switches from the first operating mode to a second operating mode, and communicates with the second device. According to the method in embodiments of this application, service transmission efficiency can be improved.