42 results about "IMSI-catcher" patented technology

The invention provides an unmanned aerial vehicle control instruction trapping method and system based on a pseudo base station technology. According to the method, firstly, signal parameters and environmental electromagnetic noise characteristics of a real base station are collected, and a dynamic base station analog signal is generated and transmitted, so that the unmanned aerial vehicle initiatively initiates a detection signal; analyzing instruction coding characteristics in the detection signal to reconstruct a trapping control signal with protocol deception, and finally enabling the unmanned aerial vehicle to keep communication connection with the pseudo base station device and continuously transmit control instruction data by adaptively adjusting a protocol field parameter and a transmitting power parameter of the trapping control signal; according to the technical scheme provided by the invention, unmanned aerial vehicle counter-reconnaissance alarm caused by abnormal signal characteristics is thoroughly eliminated, and the concealment and reliability of an instruction trapping process are improved.

In a wireless network, it provides a real base station (RBS) capable of detecting false or impersonated base station (FBS) attacks. [Solution] An enhanced access device, which is a real base station (RBS), comprises a randomizer (RM) 25 for randomizing the assignment of at least one communication resource and / or identifier used to communicate with a wireless communication device, and a detector unit (DET) 22, which is an attack inspection unit, for checking whether a transmission received from a wireless communication device used at least one communication resource and / or identifier assigned by the randomized assignment, and for determining the presence of a fake base station or an attack by a fake base station based on the result of the inspection.

The present disclosure relates to a 4G communication system, a 5G communication system, or a 6G communication system. Specifically, the embodiment of the invention provides a communication method, user equipment, a base station, a storage medium and a program product. The method executed by the UE comprises: receiving a first message, the first message being used for indicating cell handover, the first message comprising first configuration information; the first configuration information comprises first information used for indicating switching to a first cell, information of a first radio frequency fingerprint feature corresponding to the first cell, and second information related to a reference signal; and performing radio frequency fingerprint measurement based on the received reference signal to obtain a second radio frequency fingerprint feature corresponding to the first cell, and performing cell switching based on whether the first radio frequency fingerprint feature is matched with the second radio frequency fingerprint feature. According to the invention, radio frequency fingerprint measurement and verification are carried out on the cell indicating switching, induced switching or hijacking of the UE by a pseudo base station is effectively prevented, and the information and property safety of the UE is guaranteed.

The invention relates to the technical field of 5G communication security, and discloses a 5G short message encrypted transmission method, which comprises the following steps: acquiring time delay spread, angle spread and Doppler spread parameters of indoor multipath propagation, and generating a multi-dimensional channel characteristic matrix; acquiring a historical channel fingerprint database and a current channel feature matrix, and outputting a channel anomaly score; generating a three-dimensional decision space coordinate by using a threat-performance joint state space mapping algorithm; monitoring the real-time encryption queue length and the processing delay of each slice, calculating the actual SLA fulfillment rate and the security event interception rate, and generating a performance feedback vector; and inputting the performance feedback vector into a reward function calculation module of the reinforcement learning model, updating model parameters, and outputting an optimized decision strategy. According to the method, the interference of environmental noise on threat detection is avoided, the accuracy of pseudo base station attack identification is improved, and the problem of resource conflict arbitration in a multi-network slice scene is solved.

A mobile communication test system has a test control unit including a setting control unit that sets a test scenario including a transmission mode defined in a layer that allows protocol testing to be performed without going through the PHY layer and RF unit; and a pseudo communication control unit that generates an IP packet with a changed format according to the set transmission mode when performing a protocol test, and controls the pseudo base station unit to transmit and receive the IP packet with the changed format between the codec processing unit and the opposing codec processing unit, and thereby the protocol test is performed without going through the PHY layer and RF unit.

The application discloses a wireless signal secret detection method and system based on spectrum analysis, realizes detection of illegal wireless signals from a pseudo base station under the premise of protecting the privacy of users, and effectively realizes detection even in a scene where different operators cannot coordinate. In addition, the method provided by the application determines which user identifier information has been leaked, that is, a risk terminal, on the basis of the identifier information of the user terminal, the risk terminal is the focus of subsequent attack behaviors of the pseudo base station, and then the detection result of different operators and the performance of the risk terminal are combined to detect the risk wireless signal, so that the detection accuracy is improved. Moreover, the detection process is cooperated by the detection end and the operation end, and the risk monitoring is realized together, which is beneficial to reducing errors. Then, an alarm is sent to the corresponding user based on the monitoring result, so that the harmfulness of the risk result is reduced as much as possible.

To provide a mobile terminal testing device capable of easily referring to an EVM measurement result of an SRS by automatically calculating an allocation position of the SRS. The mobile terminal testing device includes: a pseudo base station unit 2 that transmits and receives an RF signal to and from a mobile terminal 10; a scenario processing unit 3 that transmits notification information to the pseudo base station unit 2 and executes a communication sequence with the mobile terminal 10, based on a scenario of a test; and a control unit 6 that calculates an allocation position of an SRS based on a set parameter, and displays an EVM measurement result such that the allocation position of the SRS is recognized.

The invention discloses a wireless signal secrecy detection method and system based on spectral analysis, which realize detection of illegal wireless signals from a pseudo base station on the premise of protecting the privacy of a user, and can effectively realize detection even in a scene in which different operators cannot coordinate. Furthermore, the method provided by the invention determines which user identification information has been leaked, namely the risk terminal, on the basis of the identification information of the user terminal, and the risk terminal is the key point of the subsequent attack behavior of the pseudo base station, so that the detection results of different operators and the performance of the risk terminal can be combined, and the detection accuracy of the pseudo base station can be improved. And the risk wireless signals are detected, so that the detection accuracy is improved. Moreover, in the detection process, the detection end and the operation end cooperate to realize risk monitoring together, and errors can be reduced. Afterwards, an alarm is sent to a corresponding user based on a monitoring result, so as to reduce the harmfulness of a risk result as much as possible.

A legitimate radio access network node may determine fake base station barring criteria that may be transmitted to a user equipment in a fake base station barring configuration. The user equipment may analyze information or signal characteristics corresponding to a signal associated with another node with respect to criteria contained in the fake base station barring configuration. The barring criteria may include a signal strength threshold or a timing advance threshold. If the analyzed information or signal characteristics satisfy barring criteria contained in the barring configuration, the user equipment may determine that the other node is a fake base station and may avoid selecting, or accessing, the other node. The user equipment may flush radio resource control configuration information corresponding to the fake base station. The user equipment may select or access a next-best node based on the barring criteria being satisfied with respect to the determined fake based station.

The invention discloses a network security monitoring method for monitoring Internet of Things equipment, which belongs to the field of network security, and comprises the following steps: forcibly starting an encryption channel for bidirectional authentication of a child smart watch and a server, verifying the authenticity of the base station certificate through a hardware security chip preset in the child smart watch, and if an invalid certificate is detected, immediately cutting off the network, generating a first alarm code and sending the first alarm code to the parent APP; the method has the beneficial effects that the network security of the child smart watch is monitored, an encryption channel is forcibly started, and a pseudo base station attack is completely eradicated; measurement data of satellite positioning, WiFi positioning and base station triangulation positioning are analyzed in a cross mode, and position cheating caused by single dependence on satellite positioning is avoided; on the premise of low power consumption, high-risk voice real-time capture is realized, and the privacy invasion risk of continuous recording is avoided; and lawbreakers are effectively prevented from hurting children and parents by using network vulnerabilities.

Network equipment (12) comprising a processing circuitry (81) and a memory (83), where the memory contains instructions executable by the processing circuitry whereby the network equipment is configured to:identify a set of measurements to be used for false base station detection in an area (22);configure different sets (18-1, 18-2, 18-N) of one or more wireless devices (14) to report different respective measurements in the set by transmitting measurement reporting configurations (20-1, 20-2, 20-N) to the wireless devices (14);receive measurement reports from the different sets (18-1, 18-2, 18-N) of one or more wireless devices (14) as configured; andperform false base station detection for the area (22) using the received measurement reports.Methods, a wireless device (14), and communication systems are also disclosed.

This invention provides a mobile communication testing system and a mobile communication testing method that promote the shift-left approach to the development process of new mobile communication terminals, thereby shortening the development period for higher layers and reducing development costs. [Solution] The mobile communication test system 1 has a test control unit 50 which includes a setting control unit 51 that sets a test scenario including a transmission mode defined in a layer that enables protocol testing without going through the PHY layer and RF unit, and a pseudo-communication control unit 52 that, when executing protocol testing, generates IP packets with a modified format according to the set transmission mode and controls the pseudo-base station unit 10 to send and receive the modified IP packets between the codec processing unit 13 and the opposing codec processing unit 33, and is characterized by performing protocol testing without going through the PHY layer and RF unit.

The invention discloses a method, a system and equipment for positioning a mobile terminal in a target area and a medium. The positioning method comprises the following steps: inducing a mobile terminal in a target area to be connected with a pseudo base station, and acquiring uplink signals of the mobile terminal by using a plurality of positioning nodes; based on the correlation number of the demodulation reference signal, extracting the uplink measurement power of the mobile terminal by using a plurality of positioning nodes; dividing a target positioning area into a plurality of networks with the same size, assuming that the mobile terminal is located at any grid point in the target area, calculating the distance between a plurality of positioning nodes and the grid point, and calculating a plurality of uplink measurement power estimated values of the mobile terminal at the grid point based on a logarithmic path loss model; and based on the uplink measurement power estimation value, converting the uplink measurement power estimation value into a probability value of the mobile terminal at any grid point after mathematical transformation, searching the grid point where the maximum value is located, and determining the position of the mobile terminal. According to the embodiment of the invention, the method is higher in positioning precision, is easy to implement, and is quick in response.

The invention relates to the technical field of Internet of Things, and discloses a pseudo base station environment judgment method and device, a storage medium, equipment and a system. The pseudo base station environment judgment method comprises the following steps: judging whether the service registration frequency of the Internet of Things equipment is greater than the network cell access refusal frequency corresponding to the Internet of Things equipment or not; if the service registration frequency is not greater than the network cell access refusing frequency, judging whether an access refusing cell corresponding to the Internet of Things equipment is a historical main service cell of the Internet of Things equipment or not; and if the rejected access cell is not the historical main service cell, judging that the Internet of Things equipment is in a pseudo base station environment. Through the method, the pseudo base station environment can be simply and efficiently identified, and accurate judgment and real-time early warning of the pseudo base station environment are realized.

A base station security detection system comprises a base station antenna, a base station repeater, a base station local server, a base station physical security detection unit, a pseudo base station detection unit, a base station communication quality detection unit, a network switch, a base station handheld terminal, a network firewall and a cloud server. The network switch is connected with the base station repeater, the base station local server, the base station physical security detection unit, the pseudo base station detection unit, the base station communication quality detection unit, the network switch, the base station handheld terminal, the network firewall and the cloud server; the base station antenna is connected with the base station local server; the base station physical security detection unit monitors and analyzes the external operation condition of the base station, the base station communication quality detection unit tests and analyzes the communication operation condition of the base station, and the pseudo base station detection unit finds and alarms a pseudo base station.

The present application relates to a signaling security protection method, an apparatus, a computer device, a storage medium and a computer program product. The method comprises: determining whether encryption operation and / or integrity protection need to be carried out or not; when encryption operation needs to be carried out, carrying out encryption operation on user plane control signaling; and / or, when integrity protection needs to be carried out, carrying out integrity protection on the user plane control signaling. By using the method, malicious attack interference by a pseudo base station or a malicious terminal can be avoided, ensuring the stability of communication systems.

The present application is applicable to the field of communication technology and provides a method for identifying a pseudo base station, comprising: periodically sending a first message to a terminal, the first message being used to instruct the terminal to measure and report the cell global identification information and tracking area code information of a newly added neighboring area; periodically receiving a second message sent by the terminal, the second message comprising: the cell global identification information and tracking area code information of the newly added neighboring area; determining the number of changes in the tracking area code of the newly added neighboring area within a first preset time period based on the second information; when the number of changes in the tracking area code of the newly added neighboring area is not within a preset range, determining the newly added neighboring area as a neighboring area of ​​a pseudo base station. This solution can accurately determine whether a neighboring area is a neighboring area of ​​a pseudo base station by the frequency of changes in the tracking area code of the neighboring area, thereby accurately identifying a pseudo base station.

A terminal base station bidirectional authentication method, system and device and a readable storage medium, the method comprising: a terminal initiates a registration service, an authentication center generates an authentication challenge signaling for a target terminal according to a preset terminal registration service corresponding rule, and returns the authentication challenge signaling for the target terminal to a base station through a switching center; the base station sends an authentication challenge signaling of the target terminal to the target terminal, the target terminal verifies the authentication challenge signaling after receiving the authentication challenge signaling, if the verification is passed, the target terminal sends a terminal verification code and a random number to the base station, and if the base station passes the verification, the target terminal successfully accesses the network; and for the terminal which has accessed the network, the base station initiates an authentication challenge to the target terminal actively, and if the target terminal and the base station pass bidirectional verification, the target terminal is successfully authenticated and challenged actively by the base station. According to the invention, network access of illegal terminals can be effectively prevented, the problem that the terminals are registered to a pseudo base station can be avoided, and the terminal network access security problem of an existing power grid is solved.

The application discloses a satellite positioning device resisting multi-band electromagnetic attack, and particularly relates to the technical field of satellite positioning equipment, which comprises a first shell and a second shell, and the inside top ends of the first shell and the second shell are fixed through bolts; the top end of the second shell is fixedly embedded with an antenna for receiving positioning signals; the inside of the first shell is fixedly connected with a fixed plate; and the top of the fixed plate is provided with a control assembly. The application determines whether it is a real driving state through the setting of an acceleration sensor and a motion sensor fusion driving recognition algorithm; satellite positioning signal receiving and position data reporting are completed through the antenna; the structure is simple, and the satellite positioning device is not easy to be captured and positioned and tracked by a pseudo base station signal; a tungsten polymer is used for greatly attenuating X-ray penetration; a conductive shielding layer is coated on the outside of the tungsten polymer composite layer, which can effectively resist harmonic detection, X-ray perspective detection and microwave coupling attack, and realizes a stable working state resisting multi-band electromagnetic attack.

A mobile terminal testing device includes: a pseudo base station unit that simulates a base station communicating with a mobile terminal; a scheduling information setting unit that sets scheduling information for specifying any one of a first carrier and a second carrier used for an uplink from the mobile terminal to the base station, for each slot of the uplink; a base station control unit that controls the pseudo base station unit based on the scheduling information; a first RF measurement unit that measures a first UL signal, which is transmitted from the mobile terminal to the pseudo base station unit using the first carrier, based on the scheduling information; and a second RF measurement unit that measures a second UL signal, which is transmitted from the mobile terminal to the pseudo base station unit using the second carrier, based on the scheduling information.

The embodiments of the present application relate to the technical field of communications. Provided are a communication method, a device, and a system. By means of the method, a UE may not allow redirection to a 2G or 3G network when the configuration of a network device does not allow insecure redirection. Therefore, attacks from a pseudo base station are avoided. The method may comprise: receiving a first message, which is used for indicating that insecure redirection is not allowed; after entering a preset scenario, receiving a second message, which is used for indicating redirection to a first network, wherein the first network is a 2G or 3G network, and the preset scenario comprises a scenario in which a mobile call MOcall is initiated, or a scenario in which a mobile call MTcall is answered; and ignoring the second message on the basis of the first message.

The invention relates to a signaling security guarantee method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: determining whether encryption operation and / or integrity protection are / is needed or not; when encryption operation needs to be carried out, encryption operation is carried out on the user plane control signaling; and / or when integrity protection needs to be carried out, integrity protection is carried out on the user plane control signaling. By adopting the method, malicious attack interference performed by a pseudo base station or a malicious terminal can be avoided, and the stability of a communication system is ensured.

The invention relates to a method for defending against a replay type pseudo base station and a counterfeit type pseudo base station, belongs to the field of communication security, and solves the problem that the security of a 5G network is reduced due to a pseudo base station attack. Comprising the following steps: respectively presetting symmetric keys Key for encryption and decryption at a 5G base station and a special terminal; the method comprises the following steps: generating 5G cell broadcast information SIB1 at a 5G base station side, performing assignment encryption on a reserved field in the SIB1 to obtain an expanded SIB1 ', and performing periodic broadcast on the SIB1'; wherein the reserved field assignment is performed based on the SIB1, the cyclically changed serial number and the sending timestamp to generate an SIB1'with a unique serial number identifier and a timestamp; the reserved field in the received SIB1'is decrypted and verified on the special terminal side; decrypting and checking the defense counterfeit type pseudo base station based on the reserved field; and verifying the defense replay type pseudo base station based on the sequence number in the reserved field and the time difference between the receiving time stamp and the sending time stamp. And the communication security is improved.

The present invention belongs to the field of mobile communication technology and discloses a method and system for preventing a terminal from initiating a location update process under a pseudo base station. In a mobile communication network, when a terminal receives a system information update indication through a paging message, if it finds that the cell location information has changed, it does not immediately initiate a location update process and makes a judgment; before initiating the location update, it first starts a timer and a counter; before initiating the location update, the terminal obtains a list of neighboring cells stored when the system information was last read, and based on the list of neighboring cells, rereads the system information of the neighboring cells and compares the location information about the cell broadcast in the neighboring cell system information with the location information currently broadcast by the cell. The present invention prevents the terminal from initiating a location update process in this case by adding a judgment of abnormal system update changes on the terminal side, thereby avoiding the illegal acquisition of user information by pseudo base stations and the push of illegal information.

The present application relates to pseudo base station identification technical field, disclose a kind of pseudo base station identification method, equipment, storage medium and device based on NSA network.The present application obtains the adjacent cell information reported by user equipment in NSA network by ANR;Judge whether the adjacent cell information is stored in local adjacent area relationship table;When the adjacent cell information is not stored in the adjacent area relationship table, network switching is carried out with the adjacent base station corresponding to the adjacent cell information, to obtain network switching result;When the network switching result is network switching failure, then determine the adjacent base station as pseudo base station, so compared with the search of pseudo base station passively, the present embodiment is connected with the adjacent base station of unknown adjacent cell by initiative, and pseudo base station identification is realized according to connection state, so as to improve the initiative of pseudo base station identification, guarantee the security of network.

The invention belongs to the technical field of wireless communication, discloses a high-robustness wireless network communication method and device of an anti-interference and anti-counterfeiting base station, and aims at solving the problems that an existing multi-hop wireless network is prone to being interfered, the anti-counterfeiting base station capacity is weak, and robustness is insufficient. The method comprises the following steps: constructing a network node trust system, and realizing pseudo base station identification through multi-dimensional verification; a network connectivity graph is generated based on the adjacency list, strong connectivity is judged by disconnecting connection of adjacent routing nodes, and redundant communication links are configured in a targeted mode; and a dynamic spectrum sensing and interference avoidance strategy is adopted to ensure the stability of a communication channel. According to the invention, through the trinity design of "pseudo base station identification-redundant link construction-interference avoidance", stable communication can still be maintained under the scenes of node disconnection, malicious interference or pseudo base station intrusion, the robustness and security of the multi-hop wireless network are significantly improved, and the method is suitable for the scenes of fire protection, chemical engineering and the like with extremely high requirements on communication reliability.

The application relates to a 5G slice self-detection system and an application method of an abnormal TAC pool in the system. The abnormal TAC pool of a 5G base station is automatically set on a terminal side, whether the terminal accesses an abnormal 5G base station is confirmed by comparing TAC values, 5G capability of the terminal is temporarily turned off when a networked automobile enters the abnormal 5G base station, and the terminal function is locked to 4G, so that the terminal is prevented from entering a 5G specific slice and causing data service failure, and the availability of data connection is ensured. The application can be applied to a scene in which a terminal is affected by a pseudo base station and cannot normally use a network, and the terminal is ensured to maintain service availability by setting an abnormal TAC pool and a 4G locking timer of the terminal.

The invention provides a pseudo base station short message identification method and system based on a block chain, computer equipment and a storage medium, and relates to the technical field of communication, and the method comprises the steps that a credible verification node receives a verification request about a to-be-verified short message, and the verification request comprises the content of the to-be-verified short message and a corresponding port number; inquiring an evidence storage record set matched with the port number corresponding to the to-be-verified short message from the block chain, wherein the evidence storage record set comprises a plurality of evidence storage records; respectively calculating the similarity between the content of the to-be-verified short message and the content of each evidence storage record; and if the maximum value of the similarity between the content of the short message to be verified and the content of each evidence storage record is greater than or equal to a preset similarity threshold, generating a verification result as safe, otherwise, generating a verification result as risk, and returning the verification result to the user node. According to the technical scheme provided by the invention, active prevention of the short message of the pseudo base station is realized through an active evidence storage mechanism, the identification accuracy is high, and the misjudgment rate can be effectively reduced.

The invention discloses a pseudo base station detection method and device, electronic equipment and a readable storage medium, and belongs to the technical field of communication. The pseudo base station detection method comprises the following steps: displaying a first operator name corresponding to a first base station under the condition that the electronic equipment accesses the first base station through a user identity identification card; when it is detected that the user identity identification card is accessed to the second base station, executing a target operation, so that the electronic device does not display or partially displays the first operator name; and under the condition that the information containing the operator name is not obtained from the second base station within the first duration, determining that the second base station is a pseudo base station.