Wireless Location Determination via Trigger Frame Sounding
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining the location of wireless devices, particularly in congested environments, as they require multiple associations with access points and lack efficient mechanisms for unassociated devices to participate in location measurements, leading to medium and power deterioration.
Innovation Solution
An enhanced location determination system that facilitates operation under high efficiency multi-user (HE MU) mode by using an enhanced sounding protocol, allowing associated and unassociated devices to perform location determination, with features like unique identification assignment, short feedback allocation, and opportunistic scheduling, which enables simultaneous responses from multiple devices and reduces the need for frequent resource reassignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple associations with access points are required for location determination, then location accuracy is improved, but medium congestion and power consumption increase
Solution Approach 1:
The patent combines location measurement opportunities for multiple access points into a single coordinated measurement event. The trigger frame allows unassociated devices to participate in location measurements with multiple access points simultaneously, merging what would otherwise be separate measurement procedures into one efficient operation that maintains accuracy while reducing power consumption and medium congestion.
Solution Approach 2:
The trigger frame mechanism serves multiple functions: it initiates location measurements, assigns resources, and coordinates multiple access points simultaneously. This universal mechanism allows both associated and unassociated devices to participate in location determination without requiring separate procedures, thereby reducing overall medium congestion and power consumption while maintaining location accuracy.
2Measurement precision
If multiple associations with access points are required for location determination, then location accuracy is improved, but device complexity increases
Solution Approach 1:
The trigger frame acts as an intermediary that coordinates location measurements between unassociated devices and multiple access points. Instead of requiring complex association management, the trigger frame mechanism mediates the interaction, allowing unassociated devices to participate in location measurements without establishing formal associations, thereby reducing device complexity while maintaining location accuracy.
3Adaptability or versatility
If frequent resource reassignment is performed, then location determination adaptability is improved, but medium congestion increases
Solution Approach 1:
The system performs preliminary resource assignment through the trigger frame before location measurements begin. Resources are assigned in advance based on predicted needs, allowing the system to adapt to different location determination scenarios without requiring frequent reassignments during operation. This preliminary action reduces medium congestion while maintaining adaptability for different measurement configurations.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to enhanced location determination. A device may cause to exchange one or more capabilities information with one or more station devices. The device may cause to assign one or more unassociated identifications (UIDs) to one or more unassociated station devices of the one or more station devices to participate in location determination of the one or more unassociated station devices. The device may cause to send a trigger frame comprising at least one of the one or more UIDs; wherein the trigger frame contains one or more resource assignments. The device may identify one or more sounding information from at least one of the one or more station devices.