NFRP Trigger Frame Segmentation for Punctured Bandwidth Feedback
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Solution Overview
Problem
The existing NDP feedback report procedure in new generation wireless communication protocols, such as IEEE 802.11be, needs improvement to accommodate increased Physical Protocol Data Unit (PPDU) bandwidth and punctured operations, which are not efficiently handled by the previous generation protocols like IEEE 802.11ax.
Innovation Solution
The proposed solution involves dividing the total PPDU bandwidth into multiple frequency segments and using these segments to implement the NDP feedback report procedure, with a single NFRP trigger frame providing NDP Feedback associated information to multiple Stations (STAs) through multiple User Info fields, each corresponding to a respective frequency segment, allowing for efficient resource allocation and response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the NDP feedback report procedure is adapted for previous generation protocols (IEEE 802.11ax), then it can support basic feedback operations, but it cannot efficiently handle increased PPDU bandwidth (up to 320 MHz) and punctured operations in new generation protocols (IEEE 802.11be)
Solution Approach 1:
The trigger frame is segmented into multiple User Info fields, where each field corresponds to a specific frequency segment. This segmentation allows the system to efficiently manage feedback reports across different bandwidth configurations (20, 40, 80, 160, or 320 MHz) and handle punctured operations by selectively activating relevant User Info fields for non-punctured segments.
2Loss of energy
If a single NFRP trigger frame is used to serve multiple STAs across multiple frequency segments, then signaling overhead is reduced, but the frame structure complexity increases
Solution Approach 1:
The single NFRP trigger frame is designed with multi-functionality to serve multiple STAs across multiple frequency segments simultaneously. The frame contains a common information field for global parameters and multiple user-specific information fields that can be selectively activated based on the bandwidth and puncturing configuration, reducing the need for multiple separate trigger frames.
Solution Approach 2:
The trigger frame structure is made dynamic through the use of a feedback type field that can indicate different feedback configurations (single-user or multi-user feedback, different frequency segment assignments). This dynamic configuration allows the frame to adapt to various operational scenarios without requiring separate fixed structures for each case.
Data Source
AI summary
The disclosure provides techniques for configuration of a NFRP trigger frame for a NDP feedback report procedure. An apparatus may include interface circuitry; and processor circuitry coupled with the interface circuitry and configured to: encode a NFRP trigger frame in a PPDU; and provide the PPDU to the interface circuitry for transmission to a set of one or more STAs. A total bandwidth of the PPDU may be divided into one or more frequency segments, the NFRP trigger frame may include one or more User Info fields, and each User Info field may correspond to a respective frequency segment of the one or more frequency segments and provide NDP Feedback associated information for a subset of one or more STAs on the respective frequency segment.