Multi-Modal Fusion Capability Exchange for Accurate Wireless Positioning
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Solution Overview
Problem
Existing wireless communication protocols face challenges in accurately determining the location of client devices due to varying capabilities between client devices and wireless access points in implementing beam forming and other location techniques.
Innovation Solution
Wireless access points and client devices communicate their capabilities for multiple wireless location techniques through modified beacon and reply messages, enabling them to cooperate and determine location using common techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless access points and client devices use varying location techniques based on their capabilities, then device compatibility is improved, but location determination accuracy deteriorates
Solution Approach 1:
The patent implements a capability exchange mechanism where access points and client devices share their supported location techniques through beacon and reply messages. This allows each device to adapt its location determination approach based on the other's capabilities, achieving universal compatibility across different device types while maintaining the ability to use the most accurate available techniques for each specific pair of devices
2Use of energy by moving object
If beam forming is implemented to conserve energy and improve bandwidth efficiency, then energy consumption is reduced, but location estimation accuracy deteriorates
Solution Approach 1:
The patent employs a feedback mechanism where the receiving device sends capability information back to the transmitting device through reply messages. This feedback loop enables the transmitting device to adjust its beam forming parameters and location techniques based on the receiver's capabilities, optimizing the balance between energy consumption and location accuracy for each specific communication pair
Data Source
AI summary
An approach for performing discovery of capacity to perform multiple wireless location techniques includes a wireless access point that is capable of performing a first set of wireless location techniques transmitting a beacon message indicating this fact. A client device receives the beacon message and transmits a reply message listing a second set of wireless location techniques that the client device is capable of performing. The wireless access point and the client device may thereafter cooperate to determine the location of the client device relative to the access point using two or more wireless location techniques that are in the first and second sets. Other information, such as channels, bands, and bandwidth available for use in location determination may be shared between the wireless access point and the client device.