Method for realizing feature discovery and identification of mobile digital communication equipment
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A technology of communication equipment and implementation method, applied in the field of communication, can solve problems such as inability to detect effectively
Inactive Publication Date: 2020-03-31
NANJING FOREST POLICE COLLEGE
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Since the wireless working frequency bands of LTE network signals, Wi-Fi signals and Bluetooth signals are different, the signal modulation and coding methods and communication protocols are also different. However, the existing solutions are all to sniff the I
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Embodiment 1
[0019] The present invention recognizes and fuzzily locates a target object with a known feature code within a certain distance range on the premise of knowing the hardware feature code of the mobile device of the target object, and the distance range is related to the used hardware feature code.
[0020] Portable SDR device (hereinafter referred to as SDR device): the communication protocol supported by USRP B210 in the present invention includes:
[0025] The analysis module of the present invention is used for analyzing the signal message captured by the SDR, and the analysis function is related to the protocol. The analysis module processes and analyzes the data in the buffer, and discovers the hardware feature code of the mobile digital communication equipment contained in the wireless signal.
[0026] Such as figure...
Embodiment 2
[0040] Such as figure 2 Shown, GSM protocol information capture of the present invention comprises:
[0041] 1) Load the GSM signal module of the SDR device;
[0042] 2) Turn on the GSM base station frequency point detection function;
[0043] 3) According to the strength of the signal, poll the handshake data between the mobile device and the base station at each frequency point, and capture it to the data buffer (denoted as Buffer);
[0044] 4) The analysis module analyzes the Mobile Identity data in the Buffer, from the offset address 0x40 to 0x46 to the GSM cellular network hardware feature code IMSI (International Mobile Subscriber Identity).
[0045] 4G-LTE protocol information capture of the present invention comprises:
[0046] 1) Load the LTE signal module of the SDR device;
[0047] 2) Build a temporary LTE base station.
[0048] 3) inducing the mobile device to trigger an RRC connection request to attach to the temporary LTE base station;
[0049] 4) Capture ...
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Abstract
The invention discloses a method for realizing feature discovery and identification of mobile digital communication equipment. The method comprises the following steps: the step 1, starting portable SDR equipment; the step 2, selecting a wireless signal module for loading; the step 3, capturing wireless signal data, and storing the wireless signal data into equipment for buffering., the step 4, processing and analyzing the buffered data by the analysis module, and finding the mobile digital communication equipment hardware feature code contained in the wireless signal, the step 5, identifyingwhether the hardware feature code value found in the step 4 is a specified hardware feature code value, if so, going to the step 6, and if not, going to the step 4; and the step 6, further analyzing and processing the identification result of the step 5 to collect the survival state of the mobile digital communication device and the approximate distance between the mobile digital communication device and the SDR device. According to the method, aiming at the requirements of the public security industry, the discovery and identification of various hardware feature codes in different communication protocol signals are well realized by loading software packages of corresponding protocols.
Description
technical field [0001] The invention relates to a method for realizing feature discovery and recognition of mobile digital communication equipment, which belongs to the technical field of communication. Background technique [0002] The hardware feature codes of mobile digital communication devices commonly used in the market today mainly include IMSI, WiFi MAC address and Bluetooth MAC address. These feature codes can be used as unique device identification codes in the wireless communication process. In the field of public safety, it is often necessary to identify specific objects. Since the wireless working frequency bands of LTE network signals, Wi-Fi signals and Bluetooth signals are different, the signal modulation and coding methods and communication protocols are also different. However, the existing solutions are all to sniff the IMSI of the cellular phone user equipment separately. Devices, and devices that independently detect Wi-Fi MAC addresses (Wi-Fi "probes")...
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