WiFi Transmitting Terminal Packet Prioritization for Latency Reduction
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Solution Overview
Problem
The current DCF mechanism in WIFI networks results in long communication delays and low data transmission efficiency due to its inability to adjust packet priority during transmission, which is detrimental for real-time communication applications.
Innovation Solution
A data processing method that determines if a data packet is of a preset type and within a specific duration, initiating a channel contention operation including carrier sensing and a back-off window, allowing it to be prioritized and transmitted promptly, thereby reducing latency and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the DCF mechanism is used for data packet transmission, then channel collision is reduced and wireless terminals can share channels, but communication delay increases and data transmission efficiency decreases
Solution Approach 1:
The patent performs preliminary classification of data packets into different queues based on their characteristics (real-time, best-effort, exempted) before transmission. This preliminary action allows the system to prioritize real-time packets and apply different transmission strategies, reducing communication delay while maintaining channel collision reduction through structured access control.
Solution Approach 2:
The patent segments the transmission system into multiple queues (real-time queue, best-effort queue, exempted queue) with different transmission mechanisms. Real-time packets use a dedicated transmission mechanism with adjustable parameters, while other packets use standard DCF, allowing optimized handling of time-sensitive data without compromising overall system stability.
2Adaptability or versatility
If the DCF mechanism is used for data packet transmission, then wireless terminals can share channels, but data transmission efficiency decreases
Solution Approach 1:
The patent introduces dynamic parameter adjustment for real-time data packets, where transmission parameters (such as contention window size, inter-frame spacing) can be adjusted based on channel conditions and packet priorities. This dynamic approach allows the system to adapt to varying traffic conditions, improving transmission efficiency while maintaining fair channel sharing through the multi-queue structure.
Data Source
AI summary
The present disclosure discloses a data processing method, apparatus, device, and computer-readable storage medium, wherein the method is performed by a transmitting terminal, and the method includes: in response to a type of a data packet to enter a transmission queue of the transmitting terminal being a preset type, determining a timing when the data packet is expected to enter the transmission queue of the transmitting terminal as an expected transmitting timing; and in response to a duration from current timing to the expected transmitting timing being within a preset range, initiating a channel contention operation related to transmitting the data packet, wherein the channel contention operation related to transmitting the data packet includes carrier sensing, waiting for a distributed inter-frame spacing DIFS, and waiting for a back-off window.