Hybrid RF Positioning Coordination for Interference-Aware Scheduling
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Solution Overview
Problem
Existing RF-based positioning technologies face interference issues due to the coexistence of multiple radio frequency technologies in a single device, leading to reduced accuracy and efficiency, particularly in indoor scenarios.
Innovation Solution
A method and system for hybrid positioning that coordinates multiple RF technologies, such as UWB and Wi-Fi, by requesting and transmitting capability reports to manage RF channels and session configurations, reducing interference and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple RF positioning technologies are used simultaneously in a single device, then positioning accuracy is improved, but RF interference increases
Solution Approach 1:
The patent segments the operation of multiple RF technologies by assigning them to different time slots through a coordinated scheduling mechanism. The system divides positioning sessions into discrete time intervals, allowing UWB, Wi-Fi, and cellular technologies to operate sequentially rather than simultaneously, thereby eliminating mutual interference while maintaining positioning accuracy through hybrid fusion of results from multiple technologies.
Solution Approach 2:
The patent implements periodic action through time-division multiplexing where different RF technologies are activated in periodic time slots. The coordinating device schedules positioning sessions for different technologies at specific periodic intervals, ensuring that each technology operates during its designated time window without conflicting with others, thus resolving the interference issue while preserving the benefits of multi-technology positioning.
2Object-affected harmful factors
If capability reporting mechanisms are implemented for coordinating RF devices, then interference management is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary coordinating device that acts as a mediator between multiple participating RF devices. This coordinator centralizes the capability reporting and scheduling functions, collecting capability information from all devices and generating coordinated time-division schedules. By concentrating the coordination logic in a single intermediary device, the complexity is managed centrally rather than requiring complex peer-to-peer coordination protocols among all devices.
Solution Approach 2:
The patent implements feedback mechanisms where participating devices report their capabilities and operational status to the coordinating device. The coordinator uses this feedback information to dynamically adjust scheduling decisions and resolve conflicts. This feedback loop enables the system to adapt to changing conditions and device capabilities, managing interference effectively while keeping individual device complexity low through standardized reporting protocols.
Data Source
AI summary
An example method of hybrid positioning performed by a coordinating radio frequency (RF) device. The method may comprise requesting one or more capability reports from one or more participating RF devices, wherein a capability report comprises parameters indicating whether the participating RF device: participates in a present hybrid positioning session utilizing each of a plurality of RF positioning technologies; and supports one or more RF channels for RF positioning; receiving, from each participating RF device, the corresponding capability report. The method may also comprise transmitting, to the participating RF devices that participate in the present hybrid positioning session, a hybrid positioning session configuration, determined based on the capability reports.