Shielded Box for Cellular Device Identification
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Solution Overview
Problem
Conventional methods for identifying and tracking contraband wireless devices in secured facilities are costly and inefficient, as they require a permanent contractor and a managed access system that can 'bleed' into surrounding areas, affecting legitimate communications.
Innovation Solution
A system and method that utilize a shielded box with internal antennas to electronically isolate cellular devices, allowing them to connect to a virtual base station and extract electronic identifiers such as IMSI and IMEI, thereby identifying and verifying the devices without the need for continuous contractor monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a managed access system with base stations is deployed to intercept unauthorized transmissions, then contraband device monitoring is improved, but legitimate communications are blocked due to signal bleeding outside the facility
Solution Approach 1:
The system segments the monitoring function by deploying individual shielded boxes at specific locations rather than a continuous network. Each box independently monitors devices that enter it, isolating the monitoring function spatially and preventing signal interference between different monitoring points.
Solution Approach 2:
The shielded box acts as an intermediary device between the external environment and the monitoring system. It creates a controlled electromagnetic environment that allows device identification without requiring continuous signal transmission outside the facility, thus preventing signal bleeding.
2Object-affected harmful factors
If antenna power is reduced to prevent signal bleeding, then legitimate communications are protected, but contraband devices can access external base stations and bypass protections
Solution Approach 1:
The system extracts the monitoring function from the traditional base station architecture and places it within individual shielded boxes. This extraction eliminates the need for high-power external antennas while maintaining monitoring capability through the box's internal electromagnetic isolation and device identification mechanisms.
Solution Approach 2:
Instead of using physical antennas that transmit signals outward, the system creates a virtual representation of network presence within the shielded box. The box emulates network characteristics to identify devices without requiring actual signal transmission outside the facility boundaries.
3Reliability
If a permanent contractor operates a managed access system 24/7, then continuous monitoring is improved, but operational costs become exorbitant
Solution Approach 1:
The shielded boxes are designed as self-contained units that automatically detect, identify, and report contraband devices without requiring continuous human intervention. The system performs monitoring functions autonomously, eliminating the need for expensive 24/7 contractor operations while maintaining reliable detection capability.
Solution Approach 2:
Rather than continuous operation, the system operates periodically when devices enter the shielded boxes. The monitoring action is triggered by device presence and automatically stops when the device is identified or leaves the box, reducing operational requirements from continuous to event-driven.
4Measurement precision
If conventional monitoring systems are deployed, then device identification is improved, but the system complexity and equipment requirements increase
Solution Approach 1:
The shielded box merges multiple functions into a single integrated unit: electromagnetic shielding, network signal generation, device identification, and data collection. This consolidation eliminates the need for separate, complex systems for each function, reducing overall system complexity while maintaining precise device identification capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides a cost-effective and reliable means to identify and track cellular devices, reducing the risk of contraband usage while minimizing interference with legitimate communications, and eliminating the need for continuous contractor presence.
Implementation Method 1
a box configured to provide an electronically isolated environment by blocking electromagnetic waves or radio frequency (RF) waves such that a cellular device is electronically isolated from outside the box
Implementation Method 2
cause the box to transmit, using the one or more internal antennas, one or more cellular network signals configured to emulate at least one base station of a telecommunication carrier
Implementation Method 3
identify, using the one or more scanning antennas, networks in an area of interest
Data Source
AI summary
Aspects for verifying an identification of a cellular device are disclosed. In one such aspect, a system for identifying cellular devices may comprise a box configured to provide an electronically isolated environment by blocking electromagnetic waves or radio frequency (RF) waves such that a cellular device is electronically isolated from outside the box when placed in the box. The system may further comprise one or more processors configured to cause the box to transmit, using one or more internal antennas, cellular network signals configured to emulate at least one base station of a telecommunication carrier to cause the cellular device to connect to a network set up by the base station when the cellular device is placed in the box, and in response to the cellular device attempting to gain access to the network, obtain an electronic identifier from the cellular device via the one or more cellular network signals.