Hybrid Positioning with Frequency-Scaled AP Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining the scope of access points (APs) to be included in hybrid positioning procedures due to frequency-dependent propagation effects, which affect the accuracy of positioning procedures.
Innovation Solution
Implementing a frequency-scaled filtering distance model that considers the channel frequency, nominal frequency of the TRP, and decay parameter to determine a first frequency-scaled filtering distance, allowing for the inclusion of usable APs within this distance for improved hybrid positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed filtering distance is used for all frequency bands, then the positioning procedure is simple to implement, but APs with erroneous recorded positions are incorrectly included or excluded due to frequency-dependent propagation effects
Solution Approach 1:
The filtering distance is made dynamic by scaling it according to the operating frequency of the TRP. The location server determines a frequency-scaled filtering distance for each TRP based on its channel frequency, allowing the filtering criterion to adapt to frequency-dependent propagation characteristics while maintaining automated operation
Solution Approach 2:
The filtering distance parameter is changed from a fixed value to a frequency-dependent value. The location server applies a frequency-scaled filtering distance model that adjusts the filtering distance based on the TRP's operating frequency, thereby improving measurement precision without significantly complicating the positioning procedure
2Quantity of substance
If access points with erroneous recorded positions are included in the positioning procedure, then more APs are available for positioning, but the positioning accuracy deteriorates due to incorrect position data
Solution Approach 1:
The filtering distance parameter is scaled according to frequency to improve the accuracy of AP selection. By adjusting the filtering criterion based on the TRP's operating frequency, the system more accurately identifies and excludes APs with erroneous recorded positions, thereby improving positioning accuracy while maintaining an adequate number of usable APs
3Measurement precision
If a frequency-scaled filtering distance model is applied to filter out APs with inaccurate positions, then positioning accuracy is improved, but the complexity of the positioning procedure increases
Solution Approach 1:
The filtering distance is scaled based on the TRP's operating frequency using a frequency-scaled filtering distance model. This approach improves positioning accuracy by accounting for frequency-dependent propagation effects, while the automated nature of the scaling process minimizes the increase in procedural complexity
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a server device may obtain a channel frequency of a channel of a transmission-reception point (TRP), a positioning procedure for a user device being performed based on one or more positioning reference signals from the TRP over the channel. The server device may determine a first frequency-scaled filtering distance by applying a frequency-scaled filtering distance model based on the channel frequency, a nominal frequency of the TRP, a first filtering distance, and a decay parameter of the TRP. In an aspect, the first frequency-scaled filtering distance indicates that, based on one or more recorded positions of one or more access points (APs) being within the first frequency-scaled filtering distance from the TRP, the one or more recorded positions of the one or more APs are usable in the positioning procedure for the user device.