QoS Feedback Control Fields for Wireless Frame Reporting
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Solution Overview
Problem
Current wireless communication systems, particularly in WLANs, face challenges in efficiently reporting Quality of Service (QoS) metrics, leading to suboptimal management of low latency and time-sensitive traffic, which is crucial for emerging applications like virtual reality and mobile gaming.
Innovation Solution
The implementation of mechanisms to generate and transmit frames containing QoS feedback information, such as in PPDU and BA frames, allowing for dynamic and proactive reporting of low latency parameters and QoS metrics on a per-MPDU basis, enabling STAs and APs to adjust their schedulers accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoS feedback information is reported frequently and in detail, then the management of low latency and time-sensitive traffic is improved, but the overhead and complexity of communication protocols increases
Solution Approach 1:
The QoS feedback information is segmented into multiple control fields within the frame structure. Each control field contains specific QoS metrics or indicators, allowing the information to be organized in a structured manner that improves reliability while maintaining manageable complexity through systematic division of the feedback data
Solution Approach 2:
The control fields are designed with universal structures that can carry multiple types of QoS information using standardized formats. This multi-functionality allows the same frame structure to handle various QoS reporting scenarios without requiring separate complex protocols for each case, thus improving reliability while controlling complexity
2Speed
If QoS feedback information is included in every frame, then the responsiveness to time-sensitive traffic is improved, but the frame size and transmission overhead increases
Solution Approach 1:
Only essential QoS feedback information is extracted and included in control fields within frames, rather than including all possible QoS data. This selective extraction maintains fast responsiveness by including critical metrics while minimizing frame size by omitting redundant or less important information
Solution Approach 2:
The patent implements partial action by including QoS feedback information in a controlled manner - not in every single frame unconditionally, but selectively based on traffic requirements and QoS conditions. This approach achieves adequate responsiveness for time-sensitive traffic while avoiding excessive frame size increases through selective inclusion
Data Source
AI summary
This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer-readable media, for reporting Quality of Service (QoS) feedback information. A method of wireless communication at an apparatus may include selecting, from a variable number of control fields, one or more control fields for inclusion in a frame, each control field comprising a control identifier field and a control information field. The control identifier field may include an indicator indicating a type of information for communication is QoS feedback information. The control information field may include one or more subfields containing the QoS feedback information. The method may further include generating the frame comprising the selected number of control fields, and outputting the frame for transmission.