20 results about "Detect and avoid" patented technology

An unmanned aerial vehicle (UAV) may detect a risk of collision with one or more objects in an airspace serviced by a mobile edge computing (MEC) node. The MEC node may provide an edge detect and avoid (edge-DAA) function for use in the airspace. The UAV may determine a first resolution advisory (RA) to be acted on in order to avoid the collision with the one or more objects based on a local DAA function within the UAV. The UAV may receive, from the MEC node, a second RA to be acted on in order to avoid the collision with the one or more objects based on the edge-DAA function. If the second RA can be acted onto avoid the collision with the one or more objects, the UAV may act on the second RA and may send a message to the MEC node with an acknowledgement.

The invention provides a method and system for detecting and avoiding interference between a WIFI channel and a cellular network, and the method comprises the steps: periodically carrying out the state query of a working mode of the WiFi channel and the cellular network, building an interference mapping relation between a cellular 4G / 5G network frequency band and a WiFi 2.4 G / 5G frequency band, and achieving the dynamic configuration of the WiFi channel and the intelligent adjustment of a frequency hopping range; selecting an interference avoidance mechanism for executing power adjustment or channel switching according to the user configuration state, the frequency hopping mode and the network environment; and based on the difference percentage of the non-interference reference, establishing a difference evaluation model, and performing cross validation on WiFi channel and cellular network signal interference in combination with a multi-dimensional index. According to the invention, WiFi 2.4 G / 5G and cellular 4G / 5G network interference detection and graded avoidance are realized; user manual channel configuration is compatible, and network interruption caused in the interference avoidance process is avoided; the problem of coexistence interference of multimode communication equipment in a complex wireless environment is solved.

A system comprises a processor onboard a vehicle, surveillance sensors, and a DAA module that receives sensor measurement tracks and includes a tracking system that tracks objects in an environment around the vehicle. The tracking system comprises a data association module that includes a track-to-track function that outputs main solution and sub-solution tracks with track information. An integrity module communicates with the DAA module and comprises a track integrity system in communication with the data association module and operative to provide integrity checks. The track integrity system compares, selects, and outputs a main solution track or sub-solution tracks based on correlated tracks provided by the track-to-track function and solution separation; sends a track solution that passes integrity tests to a prune function, and sends tracks that fail to pass integrity tests to the data association module; and assures the integrity of tracks correlated and estimated by the tracking system.

The embodiment of the invention provides an interference signal detection and avoidance method and device, and the method comprises the steps: starting an interference avoidance function of all communication cells to be subjected to interference detection, transmitting an interference signal output instruction to the communication cells, transmitting an interference detection instruction to a sensing cell, and transmitting an interference signal output instruction to the sensing cell; and obtaining an interference detection result of the sensing cell for detecting the communication cell, and closing the interference avoidance function of the corresponding communication cell according to the interference detection result. According to the method and the device, the problems of one-by-one serial instruction sending to the communication cell and the sensing cell, a large number of sent instructions and long waiting time of the instructions are solved, and the effects of reducing instruction sending and improving operation efficiency are further achieved.

A satellite communication method, terminal device, network device, computer-readable storage medium, and computer program product are provided. The satellite communication method includes: determining whether a CPE device has received a topology-aware message for perceiving the user network topology from at least one other CPE device in a virtual local area network (VLAN), wherein the VLAN includes a satellite network device and multiple CPE devices, and the satellite network device includes an SMF (Supervisory Network Element) element; and, in response to determining that the CPE device has received a topology-aware message from at least one other CPE device in the VLAN, reporting loop information to the SMF element, wherein the loop information directly or indirectly indicates the existence of a loop in the VLAN, causing the SMF element to initiate virtual stacking. This disclosure effectively detects and avoids loops.

Systems, methods, and instrumentalities are disclosed herein for a device, such as an uncrewed (e.g., unmanned) aerial vehicle (UAV) application enabling (UAE) client, performing one or more UAE layer assisted ground based detect and avoid (DAA) processes. The device may may send a registration request message to a server. The registration request message may include a local DAA ground station (LOGS) capability. The device may receive a registration response message from the server. The registration response message may indicate that a registration has been successful or the registration has failed. The device may receive a configuration request message from the server. The configuration request message may include configuration information associated with an uncrewed aerial system (UAS) service supplier (USS). Based on the configuration request message, the device may provide ground-based DAA assistance to a monitored UAV. The device may send an event report to the server.

A technique for avoiding a dynamic obstacle in a vicinity of UAV while the UAV flies a mission along a planned route includes: receiving a wireless radio signal containing information related to the dynamic obstacle in an audible speech format; translating the audible speech format to a text format; analyzing the information to determine an identity of the dynamic obstacle and determine whether the information relates to a flightpath, speed, or heading of the dynamic obstacle; in response to determining that the information relates to the flightpath, speed, or heading of the dynamic obstacle, determining an updated flightpath, speed or heading for the dynamic obstacle; comparing the updated flightpath, speed, or heading to the planned route; and in response to detecting a conflict between the dynamic obstacle and the UAV based on the comparing, performing an action by the UAV to avoid the conflict with the dynamic obstacle.

Systems, methods, and instrumentalities are disclosed herein for a device, such as an uncrewed (e.g., unmanned) aerial vehicle (UAV) application enabling (UAE) client, performing one or more UAE layer assisted ground based detect and avoid (DAA) processes. The device may may send a registration request message to a server. The registration request message may include a local DAA ground station (LOGS) capability. The device may receive a registration response message from the server. The registration response message may indicate that a registration has been successful or the registration has failed. The device may receive a configuration request message from the server. The configuration request message may include configuration information associated with an uncrewed aerial system (UAS) service supplier (USS). Based on the configuration request message, the device may provide ground-based DAA assistance to a monitored UAV. The device may send an event report to the server.

The application belongs to the technical field of robot control, and particularly relates to a master-slave operating arm with electromagnetic force feedback for precision assembly and a bidirectional transparent control method, which comprises a master-slave robot unit, an information transmission unit, a master-slave control unit, an electromagnetic force feedback unit, a bidirectional transparent control unit, a singular point processing unit, an adaptive path planning unit and a master-slave proportion matching unit. The electromagnetic force feedback unit obtains environmental force information through a magnetic coupling component and transmits the information to the master control unit; the bidirectional transparent control unit constructs a master-slave control closed loop, balances the system transparency and stability under communication delay, detects and avoids joint singular points through a Jacobian matrix, and constructs a potential field function to generate an optimal motion path. The application realizes high-precision control and force feedback under a communication delay environment, and improves the accuracy and safety of remote operation.

A system comprises a processor onboard a vehicle, surveillance sensors, and a DAA module that receives sensor measurement tracks and includes a tracking system that tracks objects in an environment around the vehicle. The tracking system comprises a data association module that includes a track-to-track function that outputs main solution and sub-solution tracks with track information. An integrity module communicates with the DAA module and comprises a track integrity system in communication with the data association module and operative to provide integrity checks. The track integrity system compares, selects, and outputs a main solution track or sub-solution tracks based on correlated tracks provided by the track-to-track function and solution separation; sends a track solution that passes integrity tests to a prune function, and sends tracks that fail to pass integrity tests to the data association module; and assures the integrity of tracks correlated and estimated by the tracking system.

This invention relates to the field of wireless communication technology, specifically to a channel selection method, apparatus, and communication device. The method includes real-time monitoring of data packet transmission and reception in each channel group, calculating the packet delivery rate of each channel group; the channel group is formed by combining multiple adjacent channels; the packet delivery rates of each channel group are arranged in descending order to determine the priority of each channel group; the packet delivery rates of each adjacent channel group are subtracted to determine the packet delivery rate difference between each channel group and its adjacent groups; based on the packet delivery rate difference between each channel group and its adjacent groups, multiple available channel groups whose packet delivery rate difference exceeds a preset threshold are identified; the multiple available channel groups are activated, and channel groups other than the available channel groups are disabled. This invention can reduce the trial-and-error costs caused by repeated collisions with interference signals, quickly detect and avoid interfering channels; and by real-time monitoring of channel PDR indicators, eliminate channels with poor performance, thereby ensuring that BLE prioritizes the use of channels with better performance during communication, improving communication quality.

Methods and apparatus are provided. In an example aspect, a method of transmitting a signal is provided. The method includes transmitting a frequency hopping signal on a first plurality of frequency channels in a first bandwidth using a first interference detect and avoid (DAA) scheme for each of the plurality of frequency channels, detecting interference in a predetermined proportion of the first plurality of frequency channels, and transmitting the frequency hopping signal on a second plurality of frequency channels in a second bandwidth smaller than the first bandwidth without using the first interference DAA scheme in response to detecting interference in the predetermined proportion of the first plurality of frequency channels.

The invention provides a chip operation detection method and device, terminal equipment, a storage medium and a program product, and the method comprises the steps: obtaining a real-time data flow of a data path according to a preset period when a chip operates; calling a preset comparison method, comparing the real-time data stream with a preset abnormal data stream, and determining whether the real-time data stream is consistent with the abnormal data stream; the abnormal data stream is a data stream which is written into the monitoring unit after the chip is produced and is confirmed to have an error; and if yes, determining a target evasion mode corresponding to the real-time data stream, and calling the target evasion mode to execute evasion operation on the real-time data stream. According to the method, errors caused by the fact that the chip continues to run the real-time data flow can be avoided, normal execution of functions of the real-time data flow is guaranteed, and therefore errors possibly occurring in the chip running process can still be effectively detected and avoided after chip production, and safety and reliability of chip running are guaranteed.

Apparatuses, systems, and techniques to perform and facilitate flight system compliance analysis. In at least one embodiment, one or more processors and / or computing systems compute one or more metrics to model and analyze performance of one or more aircraft systems with respect to one or more safety requirements.

The application discloses a collision avoidance method and system of an all-weather ship loader and electronic equipment, and relates to the field of collision detection. The application obtains point cloud data of the ship loader by adopting a millimeter wave radar, and establishes a three-dimensional space coordinate system based on cycle information of the ship loader. The point cloud data is unified in the three-dimensional space coordinate system through coordinate conversion and coordinate information. After normalization and clustering operations are respectively performed on the point cloud data, the required categories are obtained. The point cloud data corresponding to the categories matching the shape of the ship cabin is unified in the three-dimensional space coordinate system, and the ship cabin boundary is efficiently and accurately determined. A minimum bounding box is constructed according to the size of the roller and the platform where the roller is located, the minimum bounding box and the ship cabin boundary are projected onto the xy plane and the xz plane by using a projection method, a region of interest is set, and whether the projection of the minimum bounding box and the projection of the ship cabin boundary in the region of interest intersect or overlap is judged, so that the purpose of detecting and avoiding collision is quickly and accurately achieved.

This application provides a method, apparatus, terminal device, storage medium, and program product for chip operation detection. The method includes: acquiring real-time data streams of the data path according to a preset cycle during chip operation; invoking a preset comparison method to compare the real-time data streams with preset abnormal data streams to determine whether the real-time data streams and abnormal data streams are consistent; the abnormal data streams are data streams written into the monitoring unit after chip production and confirmed to cause errors; if consistent, determining a target avoidance method corresponding to the real-time data streams and invoking the target avoidance method to perform avoidance operations on the real-time data streams. This method can prevent errors caused by the chip continuing to run the real-time data streams and ensure the normal execution of the real-time data stream functions, thereby effectively detecting and avoiding errors that may occur during chip operation even after chip production, ensuring the safety and reliability of chip operation.

The invention provides a satellite communication method, terminal equipment, network equipment, a computer readable storage medium and a computer program product. The satellite communication method comprises: determining whether a CPE device receives a topology sensing message for sensing a user network topology from at least one other CPE device in a virtual local area network, the virtual local area network comprising a satellite network device and a plurality of CPE devices, the satellite network device comprising an SMF network element; and in response to determining that the CPE receives the topology awareness message from at least one other CPE in the virtual local area network, reporting loop information to the SMF network element, the loop information directly or indirectly indicating that a loop exists in the virtual local area network, so that the SMF network element initiates virtual stacking. According to the invention, loops can be effectively detected and avoided.

A technique for detecting and avoiding obstacles by an unmanned aerial vehicle (UAV) includes: querying a knowledge graph having information related to a dynamic obstacle that may be in proximity to the UAV when traveling along a planned route; comparing the location of the dynamic obstacle to the UAV to detect conflicts; and in response to detecting a conflict, performing an action to avoid conflict with the dynamic obstacle. The knowledge graph can be updated by receiving a VHF radio signal containing the information related to the dynamic obstacle in the audible speech format; translating the audible speech format to a text format using speech recognition; analyzing the text format for relevant information related to the dynamic obstacle; comparing the relevant information related to the dynamic obstacle of the text format to the knowledge graph to detect changes; and updating the knowledge graph.

Embodiments include methods for a user equipment (UE) configured to communicate with a wireless network via a master cell group (MCG) and a secondary cell group (SCG). Such methods include entering a reduced-energy mode for the SCG responsive to receiving a first command via the MCG or the SCG; and while in the reduced-energy mode for the SCG and in a activated mode for the MCG, performing beam failure detection (BFD) for the SCG and refraining from performing one or more beam management operations for the SCG. In some embodiments, the UE can perform various operations after detecting a beam failure in the SCG while in the reduced-energy mode for the SCG. Other embodiments include complementary methods for network nodes configured to provide the MCG or the SCG, and UEs and network nodes configured to perform such methods.

In one aspect, a method includes: transmitting, from a transmitter, a first packet to a device wirelessly coupled to the transmitter; in response to not receiving a response regarding the first packet from the device, retransmitting the first packet until a response is received; transmitting a plurality of second packets to the device, the second packets having a smaller width than the first packet; identifying a periodic polling interval at which the device communicates with another device; and adjusting a transmit clock slot and transmitting one or more third packets to the device according to the adjusted transmit clock slot.