A reception unit receives, with an ultrasonic sensor, received signals including a reflected wave obtained when an acoustic signal emitted from a mobile body is reflected by an object. A disturbance judgment unit judges whether a jamming attack in which a jamming signal is transmitted from outside is being made, on the basis of the received signals. An object detection unit detects an object in surroundings of the mobile body on the basis of the received signals if it is judged that no attack is being made and does not perform object detection if it is judged that an attack is being made.

An electronic device may include a processor and a network interface that may include a first radio and a second radio. The processor may be configured to perform wireless communication jamming attack detection by occasionally performing clear channel verification utilizing the network interface to determine whether a threshold number of devices' channels are incapacitated in a wireless network within a threshold amount of time and/or by sending a heartbeat signal from the first radio and determining whether the second radio received the heartbeat signal.

A method for monitoring a vehicle, the method may include detecting, by a vehicle monitor that is associated with a vehicle, a failure to communicate with a first communication network; storing failure information about a time of the failure and a location of the vehicle in proximity to a detection of the failure; attempting, after the detecting of the failure and by the vehicle monitor, to establish communication with at least one communication network out of the first communication network and a second communication network; wherein the second communication network is a long range wide area network (LoRaWAN) and the first communication network is not a LoRaWAN; and after succeeding to establish communication with a given communication network out of the first and second communication networks, transmitting the failure information over the given communication network.

The present invention relates to a method to detect a jamming situation, affecting a communication user equipment, said user equipment being adapted for communication with a base node of a new radio network (RN) said method comprising the steps of, for the user equipment, measuring the new radio bandwidth and, in case of detection of an energy in the measured band sufficient for decoding found synchronization signal blocks, attempting to decode at least a synchronization signal block in the new radio bandwidth, in the case no decoding is possible and in presence of an indication that new radio is deployed in this area, concluding that the user equipment is affected by a jamming situation, in the case a decoding of at least one synchronization signal block is possible, checking that a cell defining synchronization signal block is decoded, if no cell defining synchronization signal block is decoded, verifying if a part of the new radio bandwidth shows a high received signal strength indication, if yes, concluding that the user equipment is affected by a jamming situation.

An electronic monitoring system is described that receives data from a particular monitoring system, receives data from multiple other monitoring systems, analyzes data received from the particular monitoring system irrespective of data received from the multiple other monitoring systems, based on the analysis, determines whether one or more events occur at the particular environment, and in response to determining that a particular event occurs at the particular environment, evaluates the particular event against a set of rules, selects, based on the evaluation results, a particular subset of the multiple other monitoring systems to serve as a cooperative monitoring network, assesses data received from the particular monitoring system with data received from the particular subset of the multiple other monitoring systems, based on the assessment, tracks, in connection with the particular event, events detected by the particular subset of the multiple other monitoring systems, and handles the particular event based on the tracked events detected by the particular subset of the multiple other monitoring systems.

A method for detecting a jamming transmitter affecting a communication user equipment, operating in a cellular network supporting communication in a time-division manner, including at least one active base station, on which the user equipment is camping. In the method, the user equipment detects that at least one downlink radio channel from the active base station is not decodable, measures signal levels received on said downlink radio channel for a plurality of time units, analyzes said signal level measurements, and in case at least one time unit is detected with a signal level exceeding a predefined threshold, detects a jamming transmitter by verifying that, in a predefined amount of successive time units, the pattern of a first time unit with signal level exceeding the predefined threshold, directly followed by a second time unit with a signal level below the predefined threshold, is not detected.

Example embodiments of the present disclosure relate to attacker detection in ambient IoT. An apparatus receives at least one signal which is at least associated with a trick tag signal transmitted from a terminal device. The apparatus determines a number of attackers of a tag detection session based on the at least one signal. The apparatus transmits, to a network device, attacker information at least comprising the number of attackers. In this way, the NR element is enabled to identify and report jamming activities to the network in time. Therefore, the tag detection integrity can be guaranteed.

An apparatus and method for protecting a communication device of a railroad car is provided. The apparatus includes an antenna portion configured to include main antennas and an auxiliary antenna, a main receiver configured to check a magnitude of a received signal transferred through the main antennas of the antenna portion, an auxiliary receiver configured to check a magnitude of a received signal transferred through the auxiliary antenna of the antenna portion, and a controller configured to compare the magnitude of the signal received by the main receiver and the magnitude of the signal received by the auxiliary receiver, determine whether there is a jamming signal according to a comparison result, and take a preset countermeasure when it is determined that there is a jamming signal.

Method and apparatus are disclosed for detection and protection against jam intercept and replay attacks. An example disclosed key fob includes a first wireless transceiver tuned to communicate via a first frequency band, second wireless transceiver tuned to communicate via a second frequency band, and a communicator. The first frequency band is different than the second frequency band. The example communicator sends a first message via the first wireless transceiver in response to activation of a first button. Additionally, the example communicator, in response to not receiving a second message via the second wireless transceiver, provides an alert.

The invention concerns a vehicle tracking network including a plurality of subscriber vehicles and a control-center; and systems and methods for tracking vehicles, which are subscribers to such vehicle tracking network. In certain implementations, the method for tracking a subscriber vehicle includes the following operations carried out at the subscriber vehicle: monitoring operation of one or more services related to at least one of a wireless network communication service and positioning service associated with the subscriber vehicle; upon detecting a failure in at least one of said services, generating a corresponding distress signal encoded to be identifiable by other subscriber vehicle(s) of the vehicle tracking network; and broadcasting the encoded distress signal such that it is detectable by one or more of the other subscriber vehicles of the vehicle tracking network, which are located in the vicinity of the subscriber vehicle broadcasting the distress signal. Another subscriber vehicle(s), which receive the distress signal, may thereby initiate automatic notification of the condition of the vehicle broadcasting the distress signal to the control center.