Short Response Feedback Packet Formats for Multi-STA Wi-Fi
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Solution Overview
Problem
Existing wireless communication networks face inefficiencies in collecting feedback from multiple stations (STAs) due to the high resource usage of conventional feedback packet formats, leading to increased signaling overhead and reduced resource allocation efficiency.
Innovation Solution
A feedback packet format is introduced that is shorter in duration and uses fewer frequency domain tones, leveraging portions of an existing PHY PPDU format for backwards compatibility, allowing efficient feedback collection from a large number of STAs without significant changes to the existing implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional feedback packet formats are used, then feedback information can be transmitted reliably, but time and frequency resource overhead increases
Solution Approach 1:
The patent extracts and removes unnecessary fields from the conventional feedback packet format, specifically eliminating MAC address fields, packet control fields, duration fields, identification fields, and MPDU delimiters. This extraction principle reduces the feedback packet size while maintaining the essential feedback information, thereby reducing time overhead without compromising reliability
Solution Approach 2:
The patent changes the parameter structure of the feedback packet by modifying the packet format to exclude standard protocol fields. This parameter change transforms the conventional feedback packet into a streamlined format that contains only the necessary feedback data, reducing both time and frequency resource consumption while preserving transmission reliability
2Loss of information
If conventional feedback packet formats are used, then complete feedback information can be transmitted, but frequency resource usage increases
Solution Approach 1:
The patent extracts only the essential feedback information from the conventional packet structure, removing redundant fields such as MAC addresses, control fields, and delimiters. This extraction maintains the core feedback data while significantly reducing the frequency domain resources required for transmission
Solution Approach 2:
The patent applies parameter changes by redefining the feedback packet structure to use fewer frequency domain tones. The modified format eliminates the need for extensive protocol overhead fields, thereby reducing frequency resource consumption while preserving the completeness of feedback information through optimized data encoding
3Adaptability or versatility
If standard feedback packet formats are used, then protocol compatibility is maintained, but signaling overhead increases
Solution Approach 1:
The patent extracts and removes signaling overhead fields from the standard protocol format, eliminating MAC address fields, packet control fields, duration fields, identification fields, and MPDU delimiters. This extraction reduces signaling overhead while maintaining protocol compatibility through the use of a defined feedback packet format that APs can recognize and process
Solution Approach 2:
The patent changes the structural parameters of the feedback packet by adopting a simplified format that excludes standard protocol fields. This parameter change reduces signaling overhead while preserving adaptability through backward compatibility mechanisms and defined packet structures that ensure APs can correctly interpret the streamlined feedback information
Data Source
AI summary
This disclosure provides methods, components, devices and systems for short response feedback. Some aspects more specifically relate to communicating feedback from multiple wireless stations (STAs) to a wireless access point (AP) using fewer resources than conventional techniques. A STA may transmit a feedback packet according to a feedback packet format in response to receiving a trigger packet. The feedback packet format may include a data portion that is free of one or more medium access control fields, begin with training fields that are immediately followed by the data portion, or both. The trigger packet may trigger the transmission of the feedback packet via techniques which may be backwards compatible, reduce an overhead associated with the triggering of feedback from multiple STAs, or both. For example, a STA may transmit the feedback packet in accordance with a value of an uplink length frame of the trigger packet.