User Terminal Location-Based Access Control for Private Base Stations
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Solution Overview
Problem
Existing radio systems, such as GSM and WCDMA/HSDPA, are not optimized for downloading large files like movies, leading to inefficient use of resources and security issues due to uncoordinated deployment of private base stations, which cause unnecessary signaling and battery drain in user equipment.
Innovation Solution
A method in user terminals to receive and process location-based signals, compare them with reference data, and enable or disable access to private base stations based on matching location information, reducing unnecessary signaling and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment uses traditional NAS procedures to determine access rights to private base stations, then access control can be implemented, but unnecessary signaling is generated and battery power is drained
Solution Approach 1:
The system performs preliminary actions by storing location information (LAIs, TAIs, or geographic coordinates) of private base stations in the user equipment before access attempts. This allows the device to proactively determine whether it is in the coverage area of a private base station it has access rights to, avoiding unnecessary NAS signaling and authentication attempts when no access is available.
Solution Approach 2:
The invention extracts the access control logic from the core network NAS procedures and implements it locally in the user equipment. By storing location data and comparing current location against stored data, the access control function is performed at the edge device, eliminating the need for continuous signaling with the core network.
2Reliability
If user equipment attempts to contact private base stations without location verification, then access rights can be checked, but unnecessary signaling with the core network is generated
Solution Approach 1:
Location information of private base stations is stored in the user equipment in advance. Before attempting to contact a private base station, the device checks whether its current location matches the stored location data, thereby preliminarily determining whether access attempts are necessary and reducing signaling overhead.
Solution Approach 2:
The patent introduces location information (LAIs, TAIs, or geographic coordinates) as an intermediary element between the user equipment and the private base station access control mechanism. This intermediary allows the device to indirectly determine access rights based on location matching before establishing direct communication, thereby reducing unnecessary signaling.
3Area of stationary object
If private base stations are deployed in uncoordinated large-scale manner, then coverage can be extended, but interference with public base stations increases
Solution Approach 1:
The patent applies local quality by implementing location-based access control that restricts private base station operation to specific geographic areas where they are needed. By storing and comparing location information, the system ensures that private base stations only serve user equipment in their intended coverage areas, preventing interference with public base stations in other locations while maintaining extended coverage where required.
Data Source
AI summary
A user terminal receives at least one signal with information depending on a location of the user terminal. The user terminal processes the at least one signal for providing data related to the location while it is in a cell of an accessible private base station and saves the data as a reference data. After that, the user terminal receives at least one signal with information depending on the location of the user terminal and a broadcast from a private base station. The user terminal processes the at least one signal for providing data related to a location of the user terminal and compares the data and a reference data with each other. The controller enables a contact to the private base station if the data and the reference data match each other and, otherwise, disables a contact to the private base station.