Wireless SIFS Frame Transmission for Low-Latency Collision Control
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Solution Overview
Problem
There is a need for increased and efficient access to the wireless communication medium in wireless communication networks to support high-throughput data transmission and low-latency, time-sensitive communications.
Innovation Solution
A mechanism utilizing the Short-Inter-Frame-Space (SIFS) period for wireless communication, allowing a station to transmit a short frame immediately after another frame, within the SIFS interval, without causing collisions, by predicting the end of the ongoing transmission and using dedicated receiver circuitry to decode both frames simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a station transmits during the SIFS period, then network efficiency and throughput are improved, but the risk of collision with other transmissions increases
Solution Approach 1:
The system performs preliminary actions by predicting the end of ongoing transmissions using duration fields and timing calculations before attempting to transmit during SIFS. This advance preparation allows the station to identify safe transmission opportunities without causing collisions, thereby improving network efficiency while maintaining reliability.
Solution Approach 2:
The system uses feedback mechanisms by monitoring the wireless medium for ongoing transmissions and using duration information from frame headers to determine when the medium will be free. This feedback loop enables the station to dynamically adjust its transmission timing to exploit SIFS periods safely, increasing throughput without causing collisions.
2Loss of time
If dedicated receiver circuitry is used to decode simultaneous transmissions, then low-latency communication is achieved, but device complexity increases
Solution Approach 1:
The receiver is segmented into dedicated circuitry specifically for decoding SIFS transmissions and separate circuitry for regular transmissions. This segmentation allows the dedicated receiver path to process SIFS frames with minimal latency while the main receiver continues normal operations, achieving low-latency communication without overwhelming the entire device complexity.
Solution Approach 2:
The dedicated receiver circuitry acts as an intermediary that handles the specific task of decoding simultaneous SIFS transmissions, isolating the complexity of parallel decoding from the main receiver path. This intermediary approach enables low-latency processing of time-sensitive frames without requiring complete redesign of the entire receiver system.
Data Source
AI summary
In one example, a first wireless communication station (STA) may be configured to identify an estimated end of a frame transmitted from a second STA to an Access point (AP); and to transmit a transmission to the AP within a Short-Inter-Frame-Space (SIFS) beginning at the estimated end of the frame from the second STA. For example, a duration of the transmission may be no longer than the SIFS. For example, the transmission to the AP may be on a same wireless communication channel as the frame from the second STA. In another example, an AP may be configured to process a frame from a first STA; and to process a transmission from a second STA, the transmission from the second STA received within a SIFS beginning at an end of the frame from the first STA.