19 results about "Symmetric network" patented technology

The invention provides a collective communication method and related products, and the method comprises the steps: obtaining network architectures corresponding to a plurality of collective communication machines and bandwidth levels among the plurality of collective communication machines; dividing the plurality of set communication machines into a plurality of communication groups with symmetrical structures according to network architectures corresponding to the plurality of set communication machines and bandwidth levels among the plurality of set communication machines; and finally, based on the communication groups, completing set communication among a plurality of set communication machines. By implementing the set communication method, a complex network architecture (an asymmetric network architecture and a network architecture with three or more bandwidth levels) is divided into a plurality of communication groups with symmetric network architectures, so that an efficient symmetric network set communication algorithm can be implemented in the communication groups, the communication logic is simplified, and the communication efficiency is improved. And bandwidth resources of different levels are fully utilized, so that the overall set communication efficiency is improved.

Two electronic devices attempt to communicate and exchange Internet Protocol (IP) packets over a cellular communication network, and at least one of the two devices is behind a symmetric Network Address Translation (NAT) service. At least one of the two devices executes a Session Traversal Utilities for NAT (STUN) protocol, which provides to that device a pair of external IP address and port of that device; which that device then informs to a Message Broker Unit that is accessible to both devices via the public Internet. The Message Broker Unit provides the external IP address and port of that device, to the other device; which then connects to a Virtual Private Network (VPN) server and sends to the first device one or more User Datagram Protocol (UDP) packets that penetrate or puncture the NAT service in an application-agnostic manner.

A process can include determining affinity information indicative of route preferences between branch routers and gateway routers. A prefix can be determined for a subnet of branch routers located at a same branch location. An affinity position of a first gateway router can be determined based on affinity information of the branch routers in the subnet. A mapping can be determined between a local preference Border Gateway Protocol (BGP) community attribute and the affinity position of the first gateway router, wherein a mapped local preference BGP community attribute and the affinity position are indicative of a same routing preference. The mapped local preference BGP community attribute can be attached to routes from the first gateway router into a cloud service provider. Affinity-based route preferences are indicated to the cloud service provider by redistributing the routes from the first gateway router with the mapped local preference BGP community attribute attached.

The invention provides a soft switching implementation and synchronous hybrid control method for a bidirectional symmetric CLLLC resonant converter, which relates to the technical field of converter control and comprises three steps of constructing a bidirectional symmetric network and setting soft switching conditions, executing synchronous hybrid control and monitoring the state of the soft switching. According to the invention, the CLLLC resonant network is constructed by adopting the design that the parameters of the primary side and the secondary side are symmetrical, the symmetrical soft switching control can be realized when the converter is in the forward and reverse working modes, the stability and the symmetry of the system are improved, and the stability and the symmetry of the system are improved by optimizing the soft switching condition and combining the two control modes of pulse frequency modulation and pulse width modulation. The working state of the system can be automatically adjusted within the wide input / output voltage and load change range, soft switching is kept all the time, and therefore the problems that in a traditional method, due to input voltage fluctuation and load change, system efficiency is reduced, and stability is poor are solved.

Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.

The invention belongs to the technical field of computer vision traffic intelligent detection, and particularly discloses a high-resolution bridge crack image generation method based on a deep convolutional generative adversarial network, which combines a deep symmetric network architecture with a dynamic channel adjustment strategy, and effectively balances the calculation efficiency and the feature expression ability. A generator adopts five times of progressive up-sampling (Upsample + Conv2d combination), the chessboard effect of traditional transpose convolution is avoided, and meanwhile, 3 * 3 convolution refining features are introduced after each level of up-sampling, so that the retention capability of a generated 640 * 640 resolution image on high-frequency information such as crack edges and texture details is improved by more than 30%. The structural design is particularly suitable for a bridge crack scene with low contrast and fuzzy edges, and the generated image is closer to the morphological characteristics of a real crack. The method improves the quality and stability of the generated image, expands the bridge crack data, generates different forms of crack images, and solves the problems of scarcity of a crack image data set and the like in bridge crack detection under a complex background.

A system and method for a predefined network topology and a predefined and linearly independent time synchronization ring. The predefined network topology includes a predefined symmetric network topology, such as a ring network topology. In the predefined symmetric network topology, a ring is constructed by computing nodes selected based on rules, where the ring construction takes a simplified line-up form to provide a linearly independent ring. These schemes create a time synchronization architecture that can tolerate one or more computing node failures without the need to re-compute the network topology or ring, and are able to add one or more irregular computing nodes and generate additional linearly independent rings. These schemes are also able to accommodate various multi-level physical network configurations and provide a physical network-aware multi-level network effect architecture for clock synchronization.

The embodiment of the present application discloses a DNA coding method and device with biological constraints. In the method, a progressive staged training strategy is adopted, the first stage is trained to minimize the distortion of the original source and the reconstructed source, and through the collaborative design of the centralized coding, the symmetrical quantization threshold and the symmetrical network structure, the compression sequence naturally satisfies the ideal GC content when represented as the ATCG base sequence. In the second stage, the loss function of the biological constraint is added to maintain low distortion while making the base sequence satisfy the biological base arrangement characteristics. The present application naturally represents the floating point sequence as the biological base sequence through the structural design, the base distribution has uniformity, and has good distortion performance, improves the efficiency of DNA data storage, and reduces the error rate.

A balun circuit addresses the bandwidth issue by using symmetric amplitude division and phase delay networks to convert single-ended signals to differential signals. Because the balun circuit's balance characteristics are guaranteed over a very wide bandwidth, other performance characteristics that can limit the operating bandwidth, such as impedance matching and insertion loss, can be carefully addressed without concern for amplitude and phase balance. A balun circuit splits a single-ended signal into four differential paths through symmetric networks and applies phase inversion by inverting the polarity of each differential path, thereby reducing the complexity, size, and loss of the balun circuit's overall configuration.

Techniques described herein can detect sites at which symmetric network address translation (NAT) is employed and can manage network traffic to support data connections to devices at the detected symmetric NAT sites. During a detection stage, multiple network connections can be established with computing devices at a site. IP addresses and port addresses associated with the multiple network connections can be compared in order to detect the use of symmetric NAT. During a policy enforcement stage, sites that employ symmetric NAT can be added to a site list. A control policy can direct traffic for sites on the site list to one or more hubs configured to manage data connections on behalf of devices at symmetric NAT sites.

The embodiment of the invention provides a self-adaptive time synchronization method, device and equipment for a wireless brain-computer interface system, and the method takes linear clock drift, symmetric network time delay and time delay stability as assumptions, and comprises the steps: transmitting a time synchronization request instruction to second equipment, calculating round-trip time consumption, and screening based on a preset time consumption threshold range to obtain a basic time data set; calculating a window mean value and a global mean value through a rolling window, and setting a time-consuming threshold condition for secondary screening to obtain an effective time data set; a linear prediction function is input after reference moment correction, and slope and intercept parameters are updated through a least square method; the updated linear prediction function is used for calculating a second equipment time prediction value, the precision of the time prediction value is evaluated in combination with a confidence interval, a triangular inequality is constructed for verification, time synchronization is completed, network jitter and clock drift are effectively resisted, precision and stability are improved, and a reliable self-adaptive synchronization scheme is provided for a distributed system.

The application provides a method for improving controllability of a symmetric network by time segmentation, and relates to the technical field of network performance optimization. The method adopts a time segmentation method to divide a symmetric network into a symmetric time-varying network composed of multiple snapshots, and realizes the structural controllability of the whole network through the control of each snapshot. Given a symmetric network, the black and white coloring is performed through a breadth-first search algorithm for classification; the maximum matching of edges in the symmetric network is found; the undirected cactus is constructed according to the unmatched nodes and the matched edges; the network graph composed of each undirected cactus is used to construct a snapshot, and the number of snapshots is the same as the number of undirected cacti. When a symmetric network is divided into a symmetric time-varying network composed of multiple snapshots, the time segmentation method can effectively reduce the number of drive nodes in the symmetric network and improve the network controllability.

The invention relates to the technical field of communication, in particular to an asymmetric network unified DPI automatic inspection method and device.The method comprises the steps that a dial testing machine periodically sends dial testing messages containing DPI equipment information to a target drone, dial testing data information is obtained according to response information of the target drone, and the dial testing data information is uploaded to a server; the server obtains the related information in the XDR ticket, compares the dial test data information with the related information in the XDR ticket, and can locate the faulty DPI equipment according to the dial test message containing the DPI equipment information; meanwhile, the running state of the whole unified DPI system is monitored in real time by checking the consistency between the dial test data information and the final relevant information in the XDR ticket, and the problem attribution can be found and positioned in time through the method no matter the interface down, the system down, the cpu overload, the memory overload, the software exception or other unknown faults.

The embodiment of the invention provides a client point-to-point connection method and device, equipment, a storage medium and a product. According to the technical scheme provided by the embodiment of the invention, the first intranet connection information is sent to the holing server, when the second holing information of the second client sent by the holing server is received, the first point-to-point connection with the second client is established according to the second holing information, and when the establishment of the first point-to-point connection fails, the holing server sends the first intranet connection information to the holing server. When the first network address translation type of the first client and the second network address translation type corresponding to the second client are the combination of symmetric network address translation and port limited network address translation, port collision with the second client is carried out; the point-to-point connection is established by adopting a plurality of punching modes, so that the point-to-point connection success rate of the clients in a complex network scene can be effectively improved, the data transmission efficiency and reliability can be improved, and the data transmission delay can be reduced.

Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.

The invention discloses a single UDP (User Datagram Protocol) channel data transmission system capable of bearing a plurality of service ports, which comprises a client for sending an udp (User Datagram Protocol) data packet comprising a status word to a server; the server is used for analyzing the udp data packet; wherein the client uses a status word to mark connection information, generates an udp data packet and transmits the udp data packet to the server through an udp channel, and the status word is used for distinguishing three states of connection establishment, data transmission and connection disconnection in a tcp access process; and after the udp data packet is decoded by the server side, the remote client side id and the tcp channel of the local network to be accessed are obtained, tcp connection between the local network and the server is established, and the local network tcp channel and the client side tcp connection channel are bound. Compared with the prior art, the problem that tcp direct connection access between the client and the server is difficult to realize in a symmetric network environment is solved.

The present invention discloses an electronically tunable amplitude equalizer and a control system, comprising: a symmetric network module, a matching module, an electronically tunable attenuation module, a signal input / output module and a voltage control terminal; the voltage control terminal includes a first control terminal, a second control terminal and a third control terminal, the matching module includes a matching capacitor, the first control terminal is connected to the matching capacitor, and the capacitance value of the matching capacitor is adjusted by the voltage of the first control terminal; the electronically tunable attenuation module includes a tunable impedance device; the bias voltage of the controllable impedance device is adjusted by the voltages of the second control terminal and the third control terminal to control the attenuation amount of the electronically tunable attenuation module; the signal input / output module includes a first port and a second port; the first port receives an external signal, and the external signal is output from the second port after being processed by the symmetric network module, the electronically tunable attenuation module and the matching module. The present invention realizes broadband non-reflection and variable equalization slope, and is suitable for various signal processing scenarios.

The invention relates to a method for optimizing distribution of large-scale competition review works and a medium. The method comprises the steps that an unweighted undirected graph with experts as nodes and co-review relations as edges is constructed; calculating the maximum value of a Hamilton circle theory based on the number of nodes, and adjusting the number of circles by decreasing progressively to enable the node degree to meet the integer constraint; designing a Hamilton circle construction algorithm, and circularly connecting nodes according to step length to generate a symmetric network structure; expanding each edge into a plurality of heavy edges to enable the node degree to reach a preset value; initializing a sequence containing all works and a review matrix; inserting the works into the matrix according to a network edge relationship, and ensuring that each work is reviewed by an expert and the common review number is strictly matched; and finally, generating a distribution matrix, checking global consistency, and outputting a standardized scheme. According to the method, efficient and balanced distribution of review tasks is realized through Hamilton circle theory optimization and a structured distribution mechanism.

The embodiment of the invention discloses a DNA coding method and device with biological constraint. In the method, a progressive staged training strategy is adopted, in the first stage, training is carried out with the purpose of minimizing distortion of an original information source and a reconstructed information source, and through collaborative design including centralized coding, a symmetric quantization threshold value and a symmetric network structure, a compressed sequence naturally meets the ideal GC content when represented as an ATCG base sequence. In the second stage, the loss function of the biological constraint is added, so that the base sequence meets the biological base arrangement characteristic while low distortion is kept. According to the method, the floating-point number sequence is naturally represented as the biological base sequence through the structural design, the base distribution is uniform, the distortion performance is good, the DNA data storage efficiency is improved, and the error rate is reduced.