Cell Identity Collection via Bandwidth Mimicry and Power Concentration
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Solution Overview
Problem
Existing methods for collecting the identity of cellular mobile devices are not optimally effective in new communication systems such as 5G or NR, as they do not adapt to the different bandwidth and power level requirements of these systems, leading to inefficiencies in device identification and connection.
Innovation Solution
An apparatus and method that form a cell with a unique physical cell identity and tracking area code, transmit channel bandwidth indication matching neighboring real cells, provide higher downlink radio channel power on a continuous channel subset, and allocate radio resources to collect the subscriber identity of cellular mobile devices, using a processor to control the transceiver and power amplifier to support communication on the same bandwidth as neighboring cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If fake cellular base stations use smaller bandwidth than commercial networks, then device identification becomes easier, but communication efficiency and service quality deteriorate
Solution Approach 1:
The patent changes the bandwidth parameter dynamically - indicating full bandwidth (e.g., 20 MHz) to attract devices but actually transmitting on a continuous subset (e.g., 5 MHz). This parameter deception resolves the contradiction by making the fake cell appear capable of high-speed communication while maintaining simpler, more efficient actual operation.
2Use of energy by moving object
If fake base stations use lower downlink power, then energy consumption decreases, but device attraction and connection success rate worsen
Solution Approach 1:
The patent applies local quality by concentrating power on a continuous channel subset rather than distributing it across the entire indicated bandwidth. This creates a localized high-power region that effectively attracts devices and ensures reliable connections on the active frequencies, while keeping overall energy consumption lower than transmitting at high power across the full bandwidth.
3Adaptability or versatility
If fake base stations indicate larger bandwidth, then device connection attractiveness increases, but actual communication performance and resource allocation efficiency deteriorate
Solution Approach 1:
The patent creates a virtual copy of the full bandwidth characteristics in the signaling information, while the physical transmission occurs only on a continuous subset. This copying approach makes the fake base station appear as a full-capability network to devices, increasing connection attractiveness, while actual resource allocation remains efficient on the narrower active bandwidth.
4Productivity
If fake base stations use non-contiguous bandwidth allocation, then spectral efficiency increases, but device compatibility and communication reliability worsen
Solution Approach 1:
Instead of using non-contiguous bandwidth allocation (the conventional approach for spectral efficiency), the patent inverts the approach by using contiguous bandwidth allocation on a subset of frequencies. This inversion maintains device compatibility and communication reliability while still achieving spectral efficiency through selective frequency usage rather than through non-contiguous allocation.
Data Source
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Figure 4B~5
AI summary
Method and arrangement for collecting subscriber identity. A cell is formed (200) for carrying out communication with mobile devices. Channel bandwidth indication is transmitted (202) indicating to cellular mobile devices the formed cell utilizes bandwidth identical to the bandwidth utilized in neighboring real cells. A downlink radio channel power level on a given continuous channel subset of the indicated channel bandwidth is provided (204). A communication request from a cellular mobile device is received (206) and radio resources allocated (208) to the cellular mobile device from the given continuous channel subset of the indicated channel bandwidth. A subscriber identity of the cellular mobile device is received (210) from the cellular mobile device.