Hyper Zone Intersection for Indoor Positioning Resolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Indoor location systems face accuracy limitations due to complex radio signal interactions with physical structures, leading to compromised resolution in zone-based approaches, which can be costly and complex to improve with higher anchor node density.
Innovation Solution
Divide anchor nodes into multiple hyper zones based on average received signal quality, selecting and intersecting them to refine user location results without increasing node density, allowing for reliable and high-resolution location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the density of anchor nodes is increased to improve location resolution, then the location accuracy is improved, but the system cost and complexity increase
Solution Approach 1:
The system segments the set of anchor nodes into multiple groups, where each group forms a distinct zone. This segmentation allows the system to achieve fine location resolution without increasing the overall density of anchor nodes, as each zone independently provides location information with sufficient precision.
Solution Approach 2:
The patent introduces a zone-based dimension to the location system. Instead of relying solely on the spatial distribution of individual anchor nodes, the system creates an additional layer of organization through zones, allowing location determination through zone intersection without requiring higher node density.
2Measurement precision
If the density of anchor nodes is increased to improve location resolution, then the location accuracy is improved, but the system cost increases
Solution Approach 1:
By segmenting anchor nodes into multiple groups that form zones, the system achieves improved location resolution using the existing set of anchor nodes. This eliminates the need to deploy additional anchor nodes, thereby avoiding increased system cost while maintaining acceptable location accuracy.
3Reliability
If the number of anchor nodes per zone is increased to improve zoning result, then the zoning accuracy is improved, but the zone size increases leading to compromised location resolution
Solution Approach 1:
The system segments anchor nodes into multiple groups, each forming a zone with a manageable number of anchor nodes. This segmentation maintains reasonable zone sizes that preserve location resolution while ensuring each zone has sufficient anchor nodes for reliable zoning accuracy through signal strength averaging.
Solution Approach 2:
The patent introduces multiple zones as an additional dimension to the location system. By creating several zones from the same set of anchor nodes through different grouping schemes, the system achieves both reliable zoning results and fine location resolution through zone intersection, without enlarging individual zone sizes.
Data Source
AI summary
The present invention relates to a system and a method for refined zoning via intersection. Specifically, anchor nodes (200) of a zone-based positioning system are divided into multiple hyper zones (40, 50) in different ways, where the different ways of dividing the hyper zones may be orthogonal to each other, with possibly partial overlapping. For each way of dividing the hyper zones (40, 50), the most likely candidate hyper zone is selected based on a user zoning method. Thereafter, the intersection (42) of the identified hyper zones is taken as the final location result of a mobile node to be located.