WLAN Sensing Bandwidth Negotiation for 320 MHz NDP Frames
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Solution Overview
Problem
Current WLAN sensing technologies do not effectively support bandwidth negotiation for null data packet (NDP) frames beyond 160 MHz, limiting the flexibility and efficiency of WLAN sensing processes.
Innovation Solution
The proposed communication method and apparatus enable initiators and responders to indicate a bearer bandwidth of 320 MHz for NDP frames by using specific message frames with defined bandwidth sub-fields, allowing for negotiation and support of higher bandwidths during WLAN sensing sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If WLAN sensing uses traditional bandwidth negotiation methods, then compatibility with existing standards is maintained, but bandwidth extension beyond 160 MHz is limited
Solution Approach 1:
The bandwidth indication is segmented into multiple sub-fields within the sensing parameter field: a first sub-field indicates the initiator's NDP frame bandwidth, and a second sub-field indicates the responder's NDP frame bandwidth. This segmentation allows independent configuration of bandwidth for each device, enabling support for 320 MHz and other extended bandwidths while maintaining structured communication.
Solution Approach 2:
The patent extends the bandwidth negotiation from a single-dimension parameter to a two-dimension parameter space by introducing separate bandwidth indication sub-fields for both initiator and responder. This dimensional expansion enables the system to negotiate different bandwidth configurations for each party, facilitating extended bandwidth support beyond traditional 160 MHz limitations.
2Productivity
If WLAN sensing negotiates higher bandwidths for improved efficiency, then sensing performance is enhanced, but communication protocol complexity increases
Solution Approach 1:
The sensing parameter field is designed with multi-functionality to serve both traditional bandwidth negotiation and extended bandwidth negotiation. By incorporating universal sub-fields that can indicate different bandwidth options (20 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz), the protocol structure remains consistent while accommodating varying sensing efficiency requirements.
Solution Approach 2:
The patent enables dynamic parameter changes in the bandwidth indication sub-fields, allowing the sensing system to adapt bandwidth configurations based on channel conditions and device capabilities. The sub-fields can be configured to indicate different bandwidth values, providing flexible parameter adjustment to optimize sensing efficiency without requiring fundamental protocol changes.
Data Source
AI summary
A communication method is performed by an initiator for wireless local area network (WLAN) sensing. The method includes: determining a message frame, wherein the message frame includes a sensing parameter field, and the sensing parameter field includes a bandwidth sub-field indicating that a bearer bandwidth of a null data packet (NDP) frame corresponding to the initiator to a responder (I2R) is 320 MHz; and sending the message frame.