RTS/CTS Mechanism Control via Channel Noisy Level Detection
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Solution Overview
Problem
Existing techniques fail to determine when to use the RTS/CTS mechanism effectively in IEEE 802.11 wireless networks, leading to low throughput rates due to the indirect nature of retransmission frequency in reflecting channel noise and busy/clear states, resulting in inefficient channel resource utilization.
Innovation Solution
A method and apparatus that determine the noisy level of a channel based on data received by a terminal, using equations to calculate a noisy level threshold, and control the startup of the RTS/CTS mechanism only when the channel is noisy, ensuring timely and effective communication by adapting to real-time channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RTS/CTS mechanism is always used to clear the channel, then channel resource acquisition is improved, but throughput rate decreases due to unnecessary overhead
Solution Approach 1:
The patent implements dynamic adaptation of the RTS/CTS mechanism by continuously monitoring channel noisy levels and adjusting mechanism activation accordingly. The system transitions from a static always-on approach to a dynamic conditional approach, activating RTS/CTS only when channel noisy level exceeds a threshold, thereby optimizing both reliability and throughput rate
Solution Approach 2:
The patent changes the operational parameters of the RTS/CTS mechanism based on channel conditions. By monitoring the noisy level parameter and comparing it against a threshold, the system adjusts whether to activate the mechanism, transforming it from a fixed parameter system to an adaptive parameter system that responds to environmental changes
2Productivity
If the RTS/CTS mechanism is not used when channel is clear, then throughput rate is improved, but channel resource acquisition fails when channel is noisy
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors channel noisy levels and uses this information to control RTS/CTS activation. The noisy level detection unit provides real-time feedback about channel conditions, which the control unit uses to make informed decisions about mechanism activation, ensuring both throughput optimization and reliable resource acquisition
Solution Approach 2:
The patent performs preliminary channel condition assessment by monitoring noisy levels before data transmission attempts. By detecting the channel state in advance and comparing it against thresholds, the system prepares appropriate transmission strategies, activating RTS/CTS beforehand when noisy conditions are detected, thus preventing transmission failures
3Device complexity
If retransmission frequency is used to determine RTS/CTS activation, then channel state detection is simplified, but detection precision is insufficient to reflect actual noisy level
Solution Approach 1:
The patent replaces the indirect mechanical-based detection method (retransmission frequency counting) with a direct electromagnetic field-based detection method (noisy level measurement). Instead of inferring channel state from transmission retries, the system directly measures the electromagnetic noise level on the channel, providing accurate real-time channel condition information without relying on indirect parameters
Data Source
AI summary
Method and apparatus for controlling startup of RTS/CTS mechanism is provided. The method includes: obtaining a noisy level of a channel based on the number of first data received by a first terminal in a first period, where the first terminal is a STA or an AP in a wireless network, and the first data include aggregation frames or non-aggregation frames; and if the noisy level is greater than or equal to a noisy level threshold, controlling the first terminal to start up the RTS/CTS mechanism when data is transmitted in a second period which is following and adjacent to the first period along a time axis. The noisy level of the channel may be obtained in real time, and the RTS/CTS mechanism may be controlled to be started up reasonably in real time, so that channel resources is utilized sufficiently, and a throughput rate is improved.