User Location Determination via CDR Base Station Frequency Analysis
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Solution Overview
Problem
Existing user location methods require active participation from users, such as installing software or increasing energy consumption, and are not applicable to Call Detail Record (CDR) data, limiting their effectiveness in determining user location based on passive data collection.
Innovation Solution
A method and apparatus that determine a user's location by analyzing CDR data to identify associated base stations and their communication frequency, using statistical data and physical coordinates of at least three base stations, while also considering community relationships to reduce data requirements and improve location determination accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS locating or three-base station method is used, then location precision is improved, but user participation is required which limits applicability to CDR data
Solution Approach 1:
The system enables passive location determination by automatically analyzing CDR data without requiring any user action, software installation, or terminal interaction. The network side autonomously processes existing call records to derive location information, making the service applicable to all users regardless of their device capabilities or willingness to participate.
Solution Approach 2:
The invention introduces an intermediary processing system that bridges CDR data and location determination. Instead of requiring direct interaction between base stations and user terminals (as in three-base station methods), the system uses CDR records as an intermediary data source that passively captures communication patterns to infer location.
2Measurement precision
If APP installation is required for location determination, then location information can be obtained, but coverage is limited to APP users only
Solution Approach 1:
The system achieves universal applicability by utilizing CDR data that all mobile users generate during normal communication activities. The location determination method works for every user in the network without requiring selective APP installation, thereby providing broad service coverage across the entire user base.
Solution Approach 2:
The network infrastructure automatically performs location determination using existing CDR data without requiring users to take any action such as installing software or enabling specific features. This passive approach ensures that all users benefit from the service uniformly.
3Measurement precision
If extensive CDR data is collected for location determination, then accuracy improves, but data processing complexity and time increase
Solution Approach 1:
The system extracts only the essential elements needed for location determination from CDR data, specifically focusing on base station identification and communication frequency information. By filtering out unnecessary data elements, the system achieves accurate location results while minimizing processing complexity and time requirements.
Data Source
AI summary
A method of determining location of a user of a mobile device based on Call Detail Records (CDRs) includes determining data in CDRs related to the user; determining base stations associated with communication locations of the user and corresponding statistical data about communication frequency according to the determined data in the CDRs; and determining location of the user based on at least three determined base stations and the corresponding statistical data about communication frequency as well as physical coordinates of the three base stations.