51 results about "Jamming attack" patented technology

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.

The invention discloses a wireless network interference attack scene recognition method based on distance measurement, which can accurately classify interference attack scenes. The wireless network interference attack scene identification method of the present invention comprises the following steps: (10) Acquisition of the interference attack clustering center: different attack scenes are set, and for each attack scene, the message interaction process data of the node and the neighbor node are collected , forming an offline measure vector set, and based on this set, calculate the interference attack clustering center of the attack scenario; (20) Online measure vector formation: collect the message interaction process data between the node and the neighbor node online, and form an online measure vector; (30) Jamming attack scene determination: Calculate the distance from the online measurement vector of this node to each jamming attack cluster center, and output the jamming attack scene corresponding to the jamming attack cluster center with the smallest distance as the recognition result.

The invention provides a method for channel estimation and identification against a pilot spoofing attack based on independent component analysis in an OFDM (Orthogonal Frequency Division Multiplexing) system. The method utilizes the characteristics of the random pilot to weaken the pilot spoofing attack to a pilot interference attack, and meanwhile, a legal channel between an uplink legal transmitter and a receiver under the pilot interference environment is estimated and identified according to the independent features of the channel. The method only need to spend time resources of three OFDM symbols and a certain number of frequency band resources and is immune to the pilot interference power of an active eavesdropper. The uplink legal transmitter disrupts the intentional pilot attack of the active eavesdropper through transmitting the uplink random pilot, and meanwhile, the receiver extracts legal channel information from a received contaminated signal through utilizing the mutual independence between the legal channel and an attack channel, so that the channel estimation accuracy of the legal channel is improved, and thus a problem of low channel estimation accuracy caused by the pilot spoofing attack is solved.

A system electronically tracks each or multiple shipment-related entities as a group of co-located dots that are monitored to provide enhanced security of the shipment from attacks or unauthorized or illicit actions that can compromise the shipment's safety. A data processing system (DPS) receives a plurality of location tracking signals of multiple shipment-related entities, associates the location tracking signals as a shipment group that is assigned a unique shipment tracking identifier (STID), and presents the shipment group as a plurality of co-located dots on a shipment tracking user interface (STUI). The DPS monitors for any unscheduled deviations in at least one of an expected co-location / geo-location of the location tracking signals, identifies specific types of unscheduled deviations, and triggers a series of responsive actions to protect the shipment. The unscheduled deviations can include signal jamming attacks, incorrect pickup (or theft) of an operator-assigned shipment, and unexpected separation of the tracked entities.

This disclosure describes a method for predicting a jamming attack on a wireless energy transfer communication network, including the base station performing channel estimation, calculating the first credible throughput and assigning a transmission time period to each user. The assignment result is notified to the user through broadcasting, and the attacker listens As a result of the allocation, the user with the longest transmission time period is taken as the target user, and the preset interference power is set based on the transmission time period of the target user. When the first credible throughput reaches the first threshold, the base station transmits energy to the user, and the user receives energy And transmit a data signal to the base station, when the target user transmits the data signal, the attacker transmits an interference signal, the base station calculates the security outage probability, the second credible throughput and the cost-performance ratio based on the received data signal, and compares the second credible throughput of the target user Signal throughput and the second threshold required by the system, and compare the cost-performance ratio of the target user with the third threshold to predict the attack, and only decode the received signal if both thresholds are satisfied.