121 results about "Network testing" patented technology

The invention discloses a dual-channel adaptive network stability testing method and system, and belongs to the technical field of computer network testing. The system adopts a dual-channel asynchronous communication architecture in which a control channel and a data channel are physically separated, instructions and state information are transmitted through an independent TCP control channel, and high-speed test data streams are transmitted through a UDP or TCP data channel. The method comprises the following steps: dynamically and adaptively adjusting a timeout parameter based on real-time network delay detection; nanosecond constant interval packet sending control is realized by using a high-precision monotonic clock source and busy waiting compensation mechanism; a packet loss detection, positioning and ACK confirmation mechanism based on the serial number is realized in an application layer; and real-time statistical display and idle detection automatic termination are realized through multi-thread parallel processing. According to the invention, the precision, the stability and the adaptive capability of network testing are remarkably improved, and the method is suitable for long-time stability testing in various scenes such as a high-speed Ethernet, a satellite link, an industrial Internet of Things gateway and the like.

The invention discloses a selective retransmission function test method, device and system for remote direct memory access, a medium and a product, and relates to the technical field of network tests.The method comprises the steps that when message features of a received test message are successfully matched with a packet loss rule, redirection processing is carried out on the test message so as to achieve controllable discarding, and the message features of the test message are successfully matched with the packet loss rule; according to the method and the device, the selective retransmission function is triggered, and the release rule corresponding to the test message takes effect to ensure that the subsequent corresponding retransmission message can be normally forwarded, so that only the first transmission of the original message is intercepted, the retransmission message is released, and the purpose of controllable packet loss is achieved; and finally, the selective retransmission function is evaluated according to the redirected message information in the function test process and the message receiving information of the message receiving end, so that the technical problems that the test packet loss is uncontrollable and the accurate test requirement is difficult to meet in the related technology can be solved, and the test efficiency is improved. The technical effects of accurate and controllable verification and performance evaluation of the selective retransmission function are achieved.

The invention provides a time-sensitive network test method and device, electronic equipment and a storage medium. The time-sensitive network test method comprises the following steps: generating time-sensitive network test Qbv interference test configuration, communication quality test configuration and load configuration; according to the Qbv interference test configuration, the communication quality test configuration and the load configuration, respectively executing tests to obtain a scheduling strategy test result, a communication data test result and a performance test result under abnormal traffic interference; and determining a network test result of the time-sensitive network according to the scheduling strategy test result, the communication data test result and the performance test result. The method has the beneficial effect that the reliability and the stability of the IEEE 802.1 Qbv scheduling strategy of the TSN application system are improved.

The invention relates to the technical field of intelligent terminals and network testing, in particular to an automatic testing system and method based on an AI large model.According to the system, parameters are configured and manually rechecked according to the testing type and the network environment, knowledge base data are retrieved through the RAG technology, an optimal testing case combination is dynamically generated in combination with the testing stage, the equipment model and the like, and the testing efficiency is improved. Testing of reliability, stability, performance and the like is automatically executed, key indexes are collected and re-checked by professionals after AI intelligent merging analysis, finally, a standardized report is output and fed back to a data optimization system and a knowledge base, a computing power-model-agent collaborative system is constructed, and automation of a whole test link is achieved; according to the method, the test period is shortened by more than 50%, the test precision and coverage are remarkably improved, the method is adaptive to multiple types of terminals and multiple scenes, test resources are optimized, it is ensured that results are objective and repeatable, and the method has sustainable evolution ability.

In some implementations, a network test device may identify a beam pattern associated with a gNodeB. The network test device may select, from the beam pattern, a first location, wherein the first location is associated with a first layer of a user equipment (UE). The network test device may select, based on the beam pattern, a second location associated with a second layer of the UE, wherein the second location is selected from a set of candidate locations associated with the first layer. The network test device may create one or more multiple-input multiple-output (MIMO) channels based on selected layers. The network test device may use the one or more MIMO channels to test a multiple user MIMO (MU-MIMO) system in a simulation or emulation environment.

This invention relates to the field of vehicular network testing technology, and discloses a domain controller network testing system, method, and apparatus. The system includes multiple vehicular Ethernet converters, Ethernet switches, and bus controllers. Each vehicular Ethernet converter is connected to a domain controller under test, and each vehicular Ethernet converter is also connected to the Ethernet switch. Each domain controller under test is also connected to the bus controller. The Ethernet switch and the bus controller are both connected to a host computer. The host computer is configured to: receive on / off configurations for the channels between the Ethernet switch and at least one of the domain controllers; receive test requests and send test signals to the bus controller; and acquire messages transmitted and received at a specified bus listening port or mirror port to obtain test results. This invention enables arbitrary channel configuration between domain controllers, meeting various testing requirements.

This application relates to a point-to-point load balancing method, apparatus, device, storage medium, and program product, applied to a first node in an enhanced Ethernet network. The method includes: generating a load balancing task when establishing a service network connection between the first node and a second node; when executing the load balancing task, if the second node is idle, configuring a network test connection between the first node and the second node with a lower priority than the service network connection; performing a load balancing test on the first node and the second node through the network test connection; if the test result shows an unbalanced load, establishing a new network test connection between the first node and the second node, and performing the load balancing test again, until a target network test connection with a load-balanced result is obtained; and replacing the service network connection between the first node and the second node with the target network test connection. This method can achieve point-to-point load balancing in an online environment without affecting existing service traffic.

The application provides an industrial 5G network rate test method and device, electronic equipment and storage medium, and relates to the technical field of mobile communication. The method deploys two kinds of industrial 5G network systems based on indoor base stations and outdoor base stations respectively, establishes a network connection between a first communication device and a second communication device under the industrial 5G network system, and performs network rate test of the industrial 5G network. Before performing the network rate test, the performance parameters of the first communication device are obtained to screen each first communication device in the access network coverage range, so as to screen out a target first communication device with better performance for network rate test, so that the reliability of the obtained network test result is higher and more persuasive. And based on the real-time performance of the first communication device, the target first communication device screened out can maintain the best at the current time, so as to ensure the accuracy of the network rate test result at each moment.

In some implementations, a network test device may apply a first calibration scheme to a transceiver array of the network test device using a first calibration signal, wherein the first calibration scheme is to measure a relative frequency response between transceivers of the transceiver array and remove errors associated with the relative frequency response, where the relative frequency response is associated with an amplitude and a phase. The network test device may apply a second calibration scheme to the transceiver array using a second calibration signal, wherein the second calibration scheme is to remove changes in the relative frequency response, where the changes in the relative frequency response are associated with changes in the amplitude and in the phase. The network test device may evaluate a wireless base station using the transceiver array that is calibrated based on the first calibration scheme and the second calibration scheme.

The invention discloses a testing method for a railway transformation passenger car network system and related equipment, and relates to the field of railway network testing. Comprising the following steps: constructing a rack structure for installing network equipment and terminal equipment on a test bed, configuring a multi-path power supply output module and a network access module, and establishing a multi-path power supply module according to business requirements of transformation of a passenger car, and determining a switch cascade mode, port configuration, VLAN division and a link redundancy strategy according to a preset network parameter design rule. And the configuration file is loaded in the control terminal, the network equipment is automatically acquired, the configuration is issued in batches, and the initialization of the network system is realized. Through single-vehicle function testing and networking comprehensive testing under the condition of simulating whole-column marshalling, network stability is verified in the processes of link aggregation, link failure and switching between a satellite link and a base station link. And simulating a straddle train connection relationship through the marshalling simulation assembly, and optimizing network configuration parameters according to a test result.

The utility model relates to the technical field of network testing, in particular to a network tester with a circuit accommodating mechanism, which comprises an upper tester shell and a lower tester shell, and the upper end face of the upper tester shell and the lower tester shell are both provided with threaded holes. The tester upper shell and the tester lower shell are fixed through bolts, a main circuit board and an auxiliary circuit board are welded to the upper end face of the tester lower shell, and the main circuit board is located on the right side of the auxiliary circuit board. A wire harness is inserted between the main circuit board and the auxiliary circuit board, and a storage device is arranged on the wire harness; the storage device is composed of a top plate, a first semiconductor heat conduction plate, an insertion column, a threaded column and a twisting plate. According to the utility model, through the arrangement of the circuit accommodation mechanism, the wire harness can be effectively fixed and accommodated, the neatness and beauty of the tester are improved, the maintenance and repair of the tester by workers are facilitated, and the service life of the tester is prolonged.

The invention discloses a network testing method and device, equipment, a storage medium and a product. The method comprises the steps that a query request is sent to a control terminal, and the query request is used for obtaining available test resource information in the control terminal; receiving the test resource information fed back based on the query request and sent by the control terminal; generating a subscription list by using the test resource information and a test resource demand of a to-be-tested network, the subscription list being used for subscribing test resources corresponding to the test resource information; sending a subscription request including the subscription list to the control terminal; and testing the to-be-tested network by using a virtual tester fed back by the control terminal based on the subscription request. According to the embodiment of the invention, the testing efficiency of network testing is improved.

The application provides a network test transmission optimization method and a test system, and belongs to the technical field of network testing.The network test transmission optimization method of the application transmits only the 4-layer header and load description information, compared with transmitting complete data packets, the data transmission amount of the PCIe bus is greatly reduced, and the bandwidth occupation of the PCIe bus is significantly reduced;the FPGA intelligent network card locally completes load generation, assembly and detection, does not need to rely on the CPU processing of the mainboard, reduces the data interaction delay, and improves the concurrent test capability of the test instrument.

Novel tools and techniques are provided for implementing variable latency testing. In various embodiments, a computing system may identify a plurality of network devices among network devices that are distributed across a network, based on a set of characteristics for testing a target device in the network. The computing system establishes a plurality of paths, each path corresponding to a path between the target device and one of the plurality of network devices. The plurality of paths includes at least one path having a latency that is different from a latency of other paths and / or at least one path having a connection speed or bandwidth that is different from a connection speed or bandwidth of other paths. The computing system initiates network tests along each established path, analyzes results of the network tests, and presents at least one of the results of the network tests or analyses of the results.

The invention discloses a cloud platform network connectivity detection method and a related device, the method is applied to a client, and the method comprises the following steps: newly establishing a test resource object and sending a new establishment instruction to each server in a cluster, so that each server also newly establishes the test resource object after receiving the new establishment instruction; after a test resource object in the client is controlled to enter a network namespace of a target resource object in the client, at least sending a network diagnosis instruction to other target resource objects in the client and the target resource object in the server by using the identity of the target resource object; sending a first instruction to a server; and obtaining a network test result fed back by each test resource object in the client and the server. The method can ensure that the target resource object is not influenced in the inspection process.

The invention relates to a virtual local area network testing method and device for an Ethernet switch in the power industry and computer equipment. The method comprises the following steps: connecting a plurality of ports of a switch to be tested with a plurality of ports of a network tester one by one; according to the to-be-tested mode of the to-be-tested switch, in the network tester, constructing a test message of the to-be-tested switch, and configuring a virtual local area network identifier of each port of the to-be-tested switch; the to-be-tested modes at least comprise a one-port input and multi-port output mode, a multi-port input and one-port output mode, a port one-to-one input and output mode and a port multi-input and multi-output mode; inputting the test message into the switch to be tested, and monitoring an output message forwarded by the switch to be tested; and obtaining a virtual local area network test result for the to-be-tested switch according to the output message and the virtual local area network identifier of each port of the to-be-tested switch. By adopting the method, the test comprehensiveness of the virtual local area network can be improved.

The invention relates to a hardware interface function testing device for a train-mounted controller, and the device is characterized in that a housing of the testing device is provided with testing interfaces which comprise a speed sensor interface, an acceleration sensor interface, an analog quantity input / output interface, a digital quantity input / output interface, and a power interface; a network test module, a communication function test module, a speed sensor test module, an analog quantity test module, a digital quantity test module and an accelerometer are arranged in the test device; the speed sensor test module is used for simulating the test of a train speed sensor, the motor is fixed on the mounting bracket, the coupling is firstly fixed with the motor, the gear is sleeved on the coupling for fixation, the motor drives the gear to rotate through the coupling, and the speed sensor reads the speed information of the gear rotation and transmits the speed information to the vehicle-mounted controller. Compared with the prior art, the vehicle-mounted controller hardware interface function testing device provided by the invention can perform comprehensive and efficient testing.

The application discloses a copper-embedded multilayer board defect detection method and system based on eddy current thermal imaging and impedance spectrum fusion, relates to the technical field of multilayer board defect detection, and comprises the following steps: applying a high-frequency alternating pulse magnetic field to a copper-embedded multilayer board to be detected; continuously collecting thermal field cooling sequence images after pulse excitation, then extracting thermal diffusion coefficients of copper-embedded regions a and thermal field isotheral line distribution characteristics; using test probes of an automatic machine to contact copper-embedded blocks and corresponding network test points on the copper-embedded multilayer board to be detected, injecting a wideband sweep signal, obtaining impedance spectrum and extracting characteristic parameters; and a , thermal field isotheral line asymmetry, Z LF , R HF and Δ θ are constructed into a multi-dimensional feature vector, input into a fusion judgment model, and a judgment result of the copper-embedded multilayer board defect is output according to a preset multiple threshold. The application realizes non-destructive defect detection, and the micro-crack detection rate is about 97%, and the copper-embedded offset and interlayer short-circuit detection rate is 100%.

The application belongs to the technical field of automobile electronic communication network testing, and particularly relates to a communication IP core integrated with a multi-protocol interference function and a working method thereof. The communication IP core integrated with the multi-protocol interference function comprises: a protocol frame processing unit configured to dynamically adapt and process communication message frames of a corresponding protocol type according to preset protocol configuration information; an interference scheduling unit configured to monitor a processing state of the protocol frame processing unit in real time, and generate an interference instruction to an interference execution unit according to the processing state and preset interference configuration parameters; and the interference execution unit configured to execute an interference operation on bus messages output by the protocol frame processing unit according to the interference instruction.

1. Name of the product in this design: Network Tester. 2. Purpose of this design: As a device for detecting network port transmission rate and bandwidth. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses an ad hoc network simulation method based on network virtualization, belongs to the technical field of computer communication, and aims to solve the problems of insufficient compatibility, inflexible link control and weak topology time-varying simulation capability of traditional ad hoc network simulation. The core of the system is that a simulation architecture comprising a simulation configuration module, a service application module, a communication node module, an analog channel module and a data acquisition module is constructed, service application and a real equipment protocol stack are packaged through a container virtualization technology, and a real product and an upper-layer service application software protocol are supported to be directly deployed without transplantation. The system is compatible with a two-layer Ethernet and a three-layer IP protocol, integrates a communication link electromagnetic propagation model, is combined with OpenvSwitch and TC tools, is matched with a software defined network technology to control link quality and network topology time-varying characteristics, is adaptive to static and dynamic topology scenes, improves simulation authenticity and flexibility, and provides reliable support for ad hoc network testing.

The application discloses a network interface card testing method and device, and relates to the technical field of computer network testing, and comprises the following steps: generating mixed traffic simulating a real network environment dynamically through an intelligent traffic generation engine; performing all-around performance measurement from a physical layer to an application layer by using a full-stack performance analysis framework, and dynamically generating and optimizing test cases; constructing a virtualized test environment, and inputting the test cases into the virtualized test environment for parallel testing; and automatically generating a test report containing problem diagnosis suggestions, so that the technical problems in the prior art, such as low test efficiency and automation degree of network card testing technology, great limitation of test scenes, difficulty in effectively analyzing data packet contents, serious waste of hardware resources and difficulty in fully verifying compatibility, are solved, and the technical effect that the performance, stability and reliability of a network card are comprehensively tested through intelligent traffic generation and deep packet inspection technology is achieved.

The invention provides a vehicle-mounted Ethernet automatic testing system and method, and belongs to the technical field of vehicle-mounted communication network testing. A vehicle-mounted Ethernet test system is built, basic parameter configuration of a vehicle-mounted Ethernet switch is completed, and connectivity of nodes is verified; loading a configuration file containing a network topology, an equipment list and a flow mode through the automatic test platform; the configuration test execution module issues parameter configuration instructions to the flow generator, the protocol analyzer and the signal quality monitoring unit; starting a test and injecting a test flow conforming to the configuration into the vehicle-mounted Ethernet switch through a flow generator; data are collected in real time through a protocol analyzer and a signal quality monitoring unit, and data cleaning and qualification judgment are completed by an automatic test platform; and generating a test result and a report, judging whether the test item is qualified or not based on the analysis result, and outputting a standardized report containing original data and fault clues. According to the invention, the reliability of the vehicle-mounted Ethernet test is improved.

The invention provides an automatic network testing method, device and equipment, a medium and a product, and relates to the technical field of automatic testing. Comprising the following steps: obtaining a test script of a local Internet LIN bus according to a preset test case and a bus communication test tool; executing the physical layer parameter detection instruction through the bus communication test tool to obtain physical layer response data of the tested equipment; executing the communication protocol attribute verification script through the bus communication test tool to obtain an LIN message of the tested equipment; executing the network management behavior monitoring program through the bus communication test tool to obtain network response data of the tested equipment; and obtaining a test result of the LIN bus according to the physical layer response data, the LIN message and the network response data, and generating a test report. According to the method, the problems that traditional manual testing is low in efficiency, incomplete in coverage and poor in consistency are solved, and the efficiency and quality of LIN bus node testing are remarkably improved.

Some aspects of the present technology relate to technologies for performing client testing using network footprint comparison. In accordance with some configurations, a network proxy initiates a client-side network testing process associated with a network and an application where the network proxy intercepts outbound network requests from the application via the network. A network signature of the application is then generated using the outbound network requests and this network signature is compared to a baseline network signature. In accordance with some configurations, comparing the network signature comprises identifying variances in application-requested-inputs associated with the one or more outbound network requests. Based on this comparison, a client-side network test result is generated that can be used to identify variances in the application relative to the baseline network signature.

The invention discloses a communication method and communication equipment, and relates to the field of network testing. In order to solve the problem that reliable statistics of large-scale data streams is difficult to realize in an ultra-high-speed scene, the invention provides a communication method, which comprises the following steps of: performing statistics on feature data extracted in a current time window to obtain current statistical state data; reading historical statistical state data from the shared memory; wherein the shared memory is a memory space which is shared by the software processor and the hardware processor and can be directly accessed by the software processor; obtaining total statistical state data according to the current statistical state data and the historical statistical state data, wherein the total statistical state data reflects statistical results of the feature data extracted in the current time window and the historical time window; and writing the total statistical state data as new historical statistical state data back to the shared memory through direct memory access. Based on the above method, reliable statistics of mass data streams in an ultra-high-speed scene can be realized.

This invention discloses an automated testing method, device, and medium for a broadband trunking communication system, relating to the field of communication network testing technology. The method includes: on the access side of the broadband trunking communication network, collecting voice group call service data, emergency video service data, and location information service data through edge computing nodes, and generating a collection window dataset under a unified time reference; jointly analyzing the latency characteristics, packet loss characteristics, and continuity characteristics in the collection window dataset to extract abnormal distribution characteristics and generate abnormal feature fingerprints; after generating the abnormal feature fingerprints, applying controllable perturbations during service operation, constructing a perturbation response curve, identifying abnormal change points, and generating an elastic threshold. This invention, by applying controllable perturbations during service operation and establishing a perturbation response curve, achieves dynamic identification of multi-dimensional communication data boundaries and can form an elastic threshold to adapt to real-time changes in complex scenarios.

Systems and methods for automatically testing a network switch are disclosed according to various embodiments. In one example, a method for automatically and simultaneously testing Power over Ethernet (PoE) ports and traffic throughput of a network switch is disclosed. A data traffic is generated by a network tester with a predetermined speed based on a configuration of the network switch. The data traffic is directed through the PoE ports of the network switch. At least one PoE tester connected to the network switch via the PoE ports of the network switch is configured, e.g. by a test application running on a test computer. A first result of testing the PoE ports is obtained by the test computer from the at least one PoE tester. A second result of testing the traffic throughput of the network switch is obtained by the test computer from the network tester.

The application discloses a kind of simulation flight data determinacy communication demonstration system based on time sensitive network, including by end system and switch form airborne network, demonstration manager and network tester.Demonstration manager is used to set the simulation parameter of end system and switch.Simulation end system has flight simulation application module, interface service module and network driver module;It is the interaction of simulating the flight data stream of real end system in time sensitive network;Through simulating periodic flight data, the flight state synchronization interaction of application layer is simulated, the data frame of data link layer is configured and encapsulated guarantee, and the communication function of simulation end system is simulated.Simulation switch has switching module and TSN protocol configuration module;It is according to scheduling or forwarding logic processing data frame.

This application provides a method and apparatus for simulating and testing signals in weak coverage scenarios of NB-IoT, belonging to the field of communication network testing and evaluation technology. The method includes: acquiring and analyzing map data based on the network coverage requirements of the target test area, delineating a first test area, configuring a base station simulator to establish an NB-IoT test cell and performing programmable attenuation control on the output signal of the base station simulator to obtain a first attenuated signal and recording the base station simulator parameters and programmable attenuation control data; inputting the first attenuated signal into a path loss model to obtain path loss simulation results; determining the target test scenario of the NB-IoT terminal and processing the monitored signaling data to obtain a first signaling feature vector and inputting it into a coverage performance evaluation model to obtain coverage performance evaluation results; fusing the coverage performance evaluation results, base station simulator parameters, and programmable attenuation control data to generate multi-dimensional coverage feature variables and inputting them into a weak coverage area determination model to obtain weak coverage area determination results.