pCELL Database for Mobile Location Measurement Accuracy
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Solution Overview
Problem
Conventional network-based location measurement methods in mobile communication systems face accuracy issues due to relay delays, lack of immediate updates for base transceiver station latitude and longitude data, and require significant human and physical resources for optimization, leading to errors in location measurement.
Innovation Solution
A network-based location measurement method utilizing a pCELL database that records and updates location measurement data, allowing for accurate and efficient selection of optimal location data for location requests, reducing the need for manual optimization and improving indoor location measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional network-based location measurement methods are used, then location measurement can be performed, but accuracy is reduced due to relay delays
Solution Approach 1:
The system pre-calculates and stores location measurement data in a pCELL database before actual location requests are made. By performing measurements in advance and caching the results, the system eliminates relay delays during actual location queries, thereby improving both speed and accuracy of location measurement.
2Measurement precision
If conventional network-based location measurement methods are used, then location measurement can be performed, but significant human and physical resources are required for optimization
Solution Approach 1:
The system automatically performs location measurements and populates the pCELL database without requiring manual optimization efforts. The automated measurement and storage process eliminates the need for significant human and physical resources while maintaining high location measurement accuracy.
3Measurement precision
If conventional network-based location measurement methods are used, then location measurement can be performed, but errors occur due to lack of immediate updates for base transceiver station latitude and longitude data
Solution Approach 1:
The system implements a feedback mechanism that automatically updates the pCELL database when base transceiver station latitude and longitude data changes. This ensures the database always contains the most current location information, maintaining high measurement accuracy and reliability without manual intervention.
Data Source
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AI summary
The present invention provides a network-based location measurement method using a pCELL database, comprising the steps of establishing a pCELL database in which a location measurement service target area is divided into lattices each having a predetermined size; continuously determining whether a request for location measurement occurs by a service subscriber; and, when the request for location measurement is generated, comparing fundamental information received from a mobile terminal with the pCELL database, determining a matching pCELL, and reporting the pCELL to the service requester. Furthermore, the present invention is constructed to periodically update a initially established pCELL database using the results of A-GPS-based location measurement and reflect variation in BTSs within a mobile communication network to the pCELL database, thereby always maintaining the optimal databae. The present invention contributes to the activation of location-based services by resolving problems related to stability of location measurement due to relays, and the degrading of accuracy of location measurement in a network-based location measurement method in a mobile communication system. Furthermore, the present invention improves the service usage rate of indoor subscribers, occupying about 70% of overall location measurement attempts and service quality and minimizes the need for human and physical resources upon initial commercialization and optimization by resolving the problem due to the considerable amount of human and physical resources required upon initial commercialization and optimization. Therefore, it is possible to replace A-GPS-based location measurement with relatively small costs.