NDPA Frame Structure for WLAN Collaborative Sensing
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Solution Overview
Problem
The existing mechanisms for collaborative sensing measurement in WLAN systems lack specific provisions for parameters and resources related to transmitting and receiving sensing measurement frames, such as NDP frames, leading to inefficiencies in cooperative sensing processes.
Innovation Solution
The implementation of a Null Data Packet Announcement (NDPA) frame that includes information about transmitters and receivers, specifying parameters like bandwidth, spatial streams, and resource units to enhance collaborative sensing measurement, particularly responder-to-responder interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing collaborative sensing measurement mechanisms are used in WLAN systems, then basic sensing functionality is provided, but efficiency and accuracy are insufficient due to lack of specific provisions for parameters and resources
Solution Approach 1:
The NDPA frame is segmented into distinct fields including transmitter information field, receiver information field, and resource allocation field. Each field contains specific parameters needed for collaborative sensing, allowing organized transmission of complex information without overwhelming the communication protocol
Solution Approach 2:
The NDPA frame is transmitted before the actual sensing measurement frames (NDP frames) to pre-announce the parameters, resources, and roles of transmitters and receivers. This preliminary action allows receiving devices to prepare appropriately for the upcoming sensing measurements, improving efficiency and accuracy
2Productivity
If generic sensing mechanisms are used without specific parameter provisions, then implementation simplicity is maintained, but cooperative sensing process efficiency deteriorates
Solution Approach 1:
The NDPA frame structure is designed to be universal and applicable to various collaborative sensing scenarios in WLAN systems. It can accommodate different numbers of transmitters and receivers, different resource allocations, and different sensing configurations, making it a multi-functional solution that improves efficiency without requiring multiple specialized protocols
Solution Approach 2:
The NDPA frame acts as an intermediary message that bridges the gap between general WLAN communication and specific collaborative sensing requirements. It carries the necessary parameter specifications and resource allocations that enable efficient cooperative sensing without requiring direct complex interactions between sensing devices
Data Source
AI summary
A communication method is performed by an access point device, and includes: determining a null data packet announcement (NDPA) frame, wherein the NDPA frame includes information about a transmitter and a receiver, wherein the transmitter is configured to transmit a sensing measurement frame and the receiver is configured to receive the sensing measurement frame; and transmitting the NDPA frame.