515 results about "Multicast" patented technology

The invention relates to a network real-time synchronization communication system, and relates to the technical field of computer network communication. The system comprises four core modules: a hardware optical IO synchronization module which integrates a multi-wavelength optical transceiver array and an anti-jitter circuit and provides a nanosecond global clock signal, and the synchronization precision is less than or equal to 15ns; the time sequence arrangement module is used for dividing a fixed time window and a dynamic buffer window based on a time sensitive network, supporting a priority preemption mechanism of the SRIO bus and realizing deterministic data transmission; the distributed RTDATA nodes replace a traditional single-board computer, a heterogeneous computing unit and an intelligent storage controller are integrated, and protocol stack processing delay is reduced through the zero copy technology; according to the dynamic multicast routing system, a safely isolated multicast tree is constructed as required, and link load distribution is optimized in combination with machine learning. Through collaborative design of hardware optical synchronization and dynamic data arrangement, the problem of real-time performance reduction caused by multi-node communication concurrence is solved.

The invention discloses a heterogeneous computing system, a cache consistency maintenance method and device, equipment and a medium, and relates to the technical field of heterogeneous computing. The method comprises the step of redefining a cache coherence protocol of the heterogeneous computing system as a metadata index protocol, a multicast synchronization protocol and a hybrid response protocol. Entropy weights of different feature dimensions are determined according to feature values of all data blocks of the heterogeneous computing system, and a protocol most matched with the task load running state at the current moment is determined from a metadata index protocol, a multicast synchronization protocol and a mixed response protocol according to the entropy weights of the different feature dimensions; and determining whether to switch the protocol according to whether the current protocol is consistent with the selected protocol. According to the method, the problem that the protocol cannot be effectively optimized in related technologies can be solved, and the consistency protocol which is most matched with the current task load of the heterogeneous computing system can be accurately determined.

The invention discloses a data transmission method and system suitable for distributed training and a switch, the data transmission method directly realizes multicast operation through the switch, and comprises the following steps: setting a multicast enable bit and a multicast extension field in a TLP data packet, if the multicast enable bit in the TLP data packet is a target field, sending the multicast extension field to the switch, and if the multicast enable bit in the TLP data packet is the target field, sending the multicast extension field to the switch. If yes, analyzing the multicast extension field by using an analysis module in the switch to determine a position parameter of the multicast object target equipment, and determining a port corresponding to the position parameter as a target port; and executing the following multicast operations by utilizing a preset multicast copying module: determining a target port as a main port, determining other target ports as slave ports, writing the TLP data packet into a temporary storage area of the main port, and based on a first-in first-out principle, writing the TLP data packet into the temporary storage area of the main port. And synchronously copying the data in the temporary storage area of the master port to the temporary storage area of each slave port by adopting a DMA controller in the switch. According to the invention, high-efficiency multicast operation can be realized, and link occupation and system overhead are reduced.

The invention discloses a PCIe (Peripheral Component Interconnect Express) switch supporting parallel sending of multicast data packets, which comprises a plurality of ports and a routing module, at least one port supports a multicast function, the port supporting the multicast function comprises a multicast function register and a multicast management module, and the multicast management module comprises a routing table. And the routing module is in communication connection with the multicast management module and is used for sending the multicast data packet to the destination port according to the routing table. The PCIe switch allows multiple ports to send multicast data packets at the same time without causing congestion.

The invention provides an exhibition hall content self-adaptive central control display method and system. The method comprises the following steps: acquiring and preprocessing exhibition hall display data; based on the exhibition hall display data obtained through preprocessing, generating feature vectors of the exhibition hall display data by adopting a multi-layer pulse neural network; based on the feature vector of the exhibition hall display data, outputting a content theme association matrix through a content association analysis model; acquiring real-time user behavior data, wherein the real-time user behavior data comprises user position information, sight focus information and stay time information; based on the content theme incidence matrix and the user behavior data, constructing a display strategy optimization model by adopting a space-time orthogonal propagation network so as to generate a self-adaptive display scheme through the display strategy optimization model; and encoding the self-adaptive display scheme by using a multicast addressing encoding scheme, and transmitting the self-adaptive display scheme to an exhibition hall display device for display.

The invention discloses a shopping method and system based on cooperation of a door lock and an unmanned supermarket, and the method comprises the steps: generating an improved multicast joining message according to shopping list information inputted by an owner on an intelligent door lock, and transmitting the improved multicast joining message to a preset multicast address, thereby completing multicast registration; according to an event triggered by face scanning after an authorized user arrives at the unmanned supermarket, the supermarket door lock generates a verification request message and sends the verification request message through multicast, identity verification is completed, and the supermarket door lock is opened; according to a payment request triggered after the authorized user selects and purchases the commodity, the payment machine generates a payment confirmation message and sends the payment confirmation message through multicast, and an owner confirmation interface is triggered; according to the payment confirmation operation of the owner, the door lock collects the payment two-dimensional code and sends the payment two-dimensional code to the payment machine, after payment is completed, the door lock sends a multicast leaving message, and the shopping process is ended. According to the embodiment of the invention, flexible cooperation of the door lock and the supermarket system can be realized, and the problems of convenient shopping and safety management and control in an offline scene are solved.

The invention resides in a computer-implemented communication method. The method comprises a mechanism for distributing blockchain and / or cryptocurrency-related communications such as alerts, notifications and updates across an electronic network to one or more recipients as efficiently and swiftly as possible. Embodiments may use IPv6 multicast to perform such improved communications. A communication can comprise a code, flag or filter which enables the communication to be targeted at particular recipient(s) and allow multicast group members that have no interest or authorised access to the contents of the communication to ignore it. Thus, improvements are provided in respect of processing resources and time. In some examples, the disclosure can be advantageous for the implementation of a blockchain-related alert key or system which can aid in network responses to emergencies or threats, thus improving the security of the blockchain network.

The invention relates to an AI-based satellite communication encryption strategy dynamic optimization method and system. According to the method, a space-time network model is constructed by collecting dynamic topological data of satellite multicast members, a member connection behavior is predicted by using a space-time diagram convolutional network and a probability matrix is generated, and the multicast key tree structure depth and a key distribution path are dynamically optimized based on a prediction result. Self-adaptive switching of a post-quantum cryptographic algorithm is realized in combination with quantum attack threat assessment, model parameters are continuously adjusted and optimized through a closed-loop verification mechanism, and finally collaborative improvement of key updating efficiency and security protection capability is realized in a satellite communication high-dynamic environment, so that key reconstruction delay and signaling overhead are remarkably reduced, and the security protection capability is improved. Meanwhile, quantum computing attack resistance and cross-protocol-layer cooperative protection capability are enhanced, and the problem of insufficient adaptability of a traditional static key management scheme in a dynamic topology scene is effectively solved.

The present application provides a communication method and apparatus, which enable a terminal device to flexibly determine a method for obtaining multicast configuration information for each multicast service based on the identifier of the multicast service, the probability of obtaining each multicast configuration information method, the level information of the terminal device, the indication information of the method for obtaining the multicast configuration information, and at least one of information indicating that data for the multicast service is to be sent or signal quality information, rather than using a fixed method to obtain configuration information for different multicast services.

The invention discloses a method, a device, equipment and a medium for solving multicast channel cutoff, relates to the technical field of network communication, and is used for solving the cutoff problem occurring when a plurality of set top boxes play the same multicast channel. The method comprises the following steps: if it is determined that a government and enterprise gateway receives an IGMP report message forwarded from a first set top box to an LAN port, discarding the IGMP report message; the second set top box is adopted to respond to the IGMP query message, and a new IGMP report message is sent to the government and enterprise gateway; generating a new multicast forwarding table item, a new multicast forwarding table MFD and a new port according to the source MAC and CVLAN information; a port aging timer is updated; adding a new multicast VLAN (Virtual Local Area Network) forwarding table item in the new multicast forwarding table MFD; according to the method and the device, a new multicast forwarding table MFD is synchronized to a user VLAN (Virtual Local Area Network), so that each set-top box cannot receive the IGMP report messages sent by other set-top boxes by discarding the IGMP report messages, and the stable transmission of the multicast stream is ensured.

The invention discloses a data forwarding processing method and system for a campus network, and the method comprises the steps: controlling a plurality of independent cameras to generate a multicast video stream carrying a permission identifier according to an access control terminal triggering event; the method comprises the following steps: synchronously creating (S, G) table entries with permission marks and never expired (*, G) table entries on a path multicast router according to a first video stream data packet received by a multicast source side designated router source DR; according to an IGMP join message which is sent by a receiver and carries a permission identifier, through a matching result of an RP comparison (*, G) table entry output interface permission and a multicast data permission identifier, whether a data stream is forwarded along a shared tree (RPT) is decided; and according to a matching result of the permission identifier of the new receiver and the pruned (S, G) flow permission, activating a pruning state on the multicast path and recovering data flow forwarding. According to the embodiment of the invention, occupation of invalid data streams on campus network bandwidth can be reduced, and the overall utilization rate of network resources is improved.

The invention relates to the technical field of network communication, and discloses an internet protocol television (IPTV) server management and control method and system driven by an internet multicast protocol, which comprises the following steps of: firstly obtaining multicast data flow and analyzing protocol characteristics of the multicast data flow, identifying multicast nodes and then fragmenting the flow, constructing a flow on-demand framework, extracting flow load data in the framework and grading and marking; calculating a bandwidth allocation value to detect a traffic abnormal point, determining a congestion area corresponding to the abnormal point and marking a speed limit, calculating a conflict threshold after data is obtained through protocol analysis, identifying a redundancy parameter based on the threshold, optimizing the parameter in combination with a preset QoS standard, and finally making a multicast control strategy according to the protocol analysis data. According to the invention, the resource scheduling efficiency of the IPTV server can be improved.

A medical device communication method that may be implemented within a variety of medical devices including but not limited to infusion pumps. The method may be implemented with a protocol stack for at least intra-device communication. Embodiments provide connection-oriented, connectionless-oriented, broadcast and multicast data exchange with priority handling of data, fragmentation, and reassembly of data, unique static and dynamic address assignment and hot swap capability for connected peripherals or subsystems.

The invention discloses a door lock cooperative transmission adjustment method and system, and the method comprises the steps: enabling a gateway router to synchronize a binding relation between a current authorizer identifier and an equipment address among whole-network multicast routers through an enhanced PIM protocol according to a face recognition result of a multimedia authorization device for indoor personnel; according to a visitor face image collected by a door lock, sending the visitor face image to a door lock gateway in a multicast mode; dynamically determining to convert the multicast video stream into a unicast stream and forward the unicast stream to one or more multimedia authorization devices according to a visitor feature vector extracted from the multicast video stream by the door lock gateway; and synchronizing the association relationship between the visitor feature vector and the identifier of the authorizer in the whole network by enhancing IGMP and PIM protocols according to the identification result of the multimedia authorization equipment on the specific action of the authorizer. By utilizing the embodiment of the invention, intelligent transmission conversion from equipment connection to identity and intention driving can be realized, and accurate and efficient authorization collaboration and remarkable optimization of network resource load are achieved.

The invention discloses a DMA (Direct Memory Access) controller supporting multicast, which comprises a multicast management module for determining whether multicast is carried out or not according to the address of a data packet to be sent and carrying out data transmission. When the DMA controller is applied to the PCIe switch, CPU resources can be released, the transmission efficiency can be improved, meanwhile, the transmission operation can be reduced, the bandwidth can be efficiently utilized, and the utilization rate of the bandwidth can be improved.

The invention discloses a decentralized high-performance multicast method and system based on Gossip and RDMA, and relates to the field of computer network communication. The method has better reliability, realizes zero-loss transmission of data packets through message de-duplication, timeout retransmission, ACK / NACK convergence and a dynamic topology adaptation mechanism, ensures data consistency, and solves the problem of insufficient reliability of traditional UDP multicast; the method has the advantages that the real-time performance is high, the delay is low, the throughput is high, the zero copy and kernel bypass characteristics of the RDMA and the batch processing mechanism of the MPMC are combined, the average delay is lower than 10 microseconds, the throughput in a large data packet scene reaches 374GB / s, and the low-delay requirements of high-frequency transaction, high-performance calculation and the like are met; the method has high expansibility, is based on a decentralized architecture of an improved Gossip protocol, does not need core node maintenance topology, supports dynamic joining or quitting of nodes, can adapt to large-scale cluster expansion, and solves the expansibility bottleneck of centralized multicast.

Embodiments of the present application are related to methods and apparatuses for point-to-multipoint (PTM) configuration for multicast service. An embodiment of the present application provides a user equipment (UE) including: receive multicast in a radio resource control (RRC) non-connected state; and a transmitter configured to: transmit a request of PTM configuration information for multicast reception in the RRC non-connected state; or transmit information associated with multicast reception of the UE after an initiation of state transition from the RRC non-connected state to a RRC connected state to assist deciding a subsequent RRC state used for the multicast reception.

Embodiments of the present application provide a communication method and device. The method comprises: a multicast session management network element receiving first information of a first multicast service from an application server, the first information being used to indicate at least one of the following: a first service area of the first multicast service, a type of the first multicast service, or the first multicast service; and the multicast session management network element sending a second service area identifier of the first multicast service to the application server according to the first information. Thus, the application server can obtain the second service area identifier of the first multicast service, i.e., the SAI of the first multicast service, without knowing network topology information.

The present disclosure relates to systems and methods for providing cybersecurity functionality to computer implemented inventions such as Internet of Thing (IoT) systems and object devices, and more specifically, to an improved cybersecurity system, method and capabilities for the protecting IoT and similar devices through non-discriminatory vendor / supplier independent distribution of secure predetermined IoT syndication data to unidentified and non-registered IoT devices, through the use of a passive data distribution technology and out-of-band, system-to-device distribution channel and no peer-to-peer stateless relationship with the receiving device and using Quality of Service (QoS) and enabling the determination as to whether there is any suspicious activity occurring and prohibiting the IoT device from taking any customer-defined action without have a separately provided authentication.

The invention discloses an end-network cooperative reliable multicast method and system, and relates to the technical field of artificial intelligence distributed computing and high-performance network communication. The method specifically comprises the following steps that: a sending end analyzes a target expert set output by a hybrid expert model in a gating manner, constructs a layered multicast bitmap comprising a network node bitmap and a local expert bitmap, and packages the layered multicast bitmap in a message extension header for sending; and the switching equipment analyzes the network node bitmap in the message extension header, executes parallel bitwise AND operation with a locally preset port bitmap mask, determines a target port set needing to be forwarded, and executes message copying and path pruning. The invention aims to solve the problem of highly dynamic target set distribution in a hybrid expert model scene through source end bitmap coding and a switch hardware pruning mechanism, and significantly reduce system overhead and long-tail delay while ensuring high-reliability transmission.

The invention discloses a PCIe (Peripheral Component Interconnect Express) switch with NTB (Network Temporary Broadcasting) ports supporting multicast, which comprises at least one NTB port, the NTB port is used for communicating with a root complex or other PCIe switches, and each NTB port comprises an address translation module and a multicast management module. Wherein the address conversion module is used for converting an address in a read-write data packet into a specified PCIe bus domain, and the multicast management module is in communication connection with the address conversion module and is used for determining whether multicast is carried out or not according to the converted address and carrying out data transmission. The PCIe switch not only can be additionally connected with one or more root conjunctions to realize security isolation of the PCIe domain, but also can improve the utilization rate of bandwidth by utilizing the advantages of multicast.

The invention discloses a configuration updating method and device of a cloud control system, electronic equipment and a storage medium, the method and device are applied to the electronic equipment, the cloud control system comprises a communication card and a plurality of controllers connected with the communication card, and the specific updating scheme is that in response to a configuration updating request of the system, configuration updating information is downloaded from the communication card, the communication card executes configuration updating operation based on the configuration updating information; when the communication card implements configuration updating, configuration updating information is synchronously sent to each controller in a multicast mode, so that the controllers synchronously execute configuration updating operation according to the configuration updating information; and after the communication card finishes sending the configuration updating information, multicast data pushing is immediately recovered. According to the scheme, synchronous configuration updating of the communication card and the controller can be realized in an extremely short time, so that the problem of abnormal jump of input and output data in the configuration updating process of the cloud control system can be solved, and threat to stable operation of an industrial system is avoided.

An apparatus including: circuitry for listening to a PM SL broadcast or multicast broadcasted by a reference UE-S; circuitry for receiving a positioning measurement request from a location server, wherein the positioning measurement request includes a reduced list of transmission points providing PRS to be measured, said reduced list containing a subset of transmission points to be measured with respect to a list that is used for measurement by the reference UE-S; circuitry for selecting respective transmission points to be listened; circuitry for performing the measurement of PRS being listed in the reduced list, where a set of measured PRS is adjusted based on the received PM SL, and where the adjustment concerns excluding measured PRS stored in PMSL; circuitry for generating a report including the PRS; and circuitry for transmitting the report to the location server.

Techniques for suppressing the flooding of link-local multicast and broadcast traffic are provided. In certain embodiments, these techniques include receiving, by a network device, a link-local multicast or broadcast message from an endpoint, where the message pertains to a networking protocol that uses link-local multicast and / or broadcast transmissions; dropping, by a data plane of the network device, the message in hardware, such that the message is not flooded on the local network segment of the endpoint; copying, by the data plane, the message to the device's central processing unit (CPU); and processing, by software running on the CPU, the message in accordance with the message's networking protocol (and in a manner that eliminates the need to flood the message).

A method for receiving quality threshold information of signal is performed by a user equipment (UE) and includes: receiving information indicating a signal quality threshold of at least one broadcast or multicast signal, wherein the broadcast or multicast signal is a signal received by a low-power wake-up signal (LPWUS) receiver of the UE; and determining whether to turn on a primary receiver based on the signal quality threshold.

The present invention provides a paging message processing method performed by user equipment not in an RRC connected state, the user equipment being capable of receiving an MBS multicast session in an RRC inactive state, including: monitoring a paging message, the paging message comprising at least one temporary mobile group identity (TMGI) identifying an MBS multicast session; and if the user equipment is in the RRC inactive state, when no MBS multicast session not configured to be received in the RRC inactive state is present among MBS multicast sessions that the user equipment has joined among the MBS multicast sessions indicated by the TMGIs in the detected paging message, skipping performing an RRC connection resumption operation.

The invention discloses a multicast group management method and device, a storage medium and electronic equipment. The method comprises the following steps: in response to multicast source equipment, sending a multicast data stream to target equipment, obtaining an extension protocol message sent by the multicast source equipment, pausing updating of a membership of a target multicast group where the multicast source equipment is located, sending the extension protocol message to the target equipment, and receiving a membership report message returned by the target equipment, and updating the membership of the target multicast group based on the membership report message. According to the invention, the technical problem of service interruption caused by aging of multicast group membership is solved.

The invention discloses an ore analysis data returning method. The method comprises the following steps: sending ore scene image data acquired by each camera to an encoder to form a video stream, and dynamically allocating a cache space; the encoder sends the video stream to the multicast group address, and the back-end analysis equipment joins in the multicast group address; the multicast router receives a video stream to form (S, G) table entries; the encoder sends multicast data to back-end analysis equipment; the multicast router analyzes the IGMP (S, G) member report message sent by the back-end analysis equipment to update the (S, G) table item, and sends a PIM (S, G) update message to be transmitted along the multicast tree; and respectively comparing the priorities of the corresponding back-end analysis devices by using the multicast routers, recording the information of the back-end analysis device with the highest priority and forwarding the information to the encoder, and emptying the backup video stream and updating the metadata by the encoder according to a received sequence number confirmation message. The method is high in storage utilization rate, and feedback flow can be reduced while data integrity is ensured.

The present invention relates to a wireless system and method for obtaining a distance or position estimate of a target mobile device (10) within a wireless network wherein the apparatus is adapted to: request a ranging or positioning service from a positioning constellation (60) formed by one or more ranging-enabled anchor devices (14) and / or access devices (20) of the wireless network; receiving one or more response multicast / broadcast messages; distance or position estimation or ranging measurements are performed based on information in the at least one response broadcast message.

The invention discloses an anti-quantum security enhancement method for an open identity connection protocol, particularly relates to the technical field of distributed identity authentication, and is used for solving an identity hijacking risk caused by client public key update lag in an anti-quantum cryptography high-frequency key rotation scene of an existing OIDC protocol. A version identification public key fusing a timestamp and Hash is dynamically generated through an identity provider, and change notification broadcast of multicast / fragment routing is realized based on historical response of a client and network topology characteristics; the relying party client accurately requests a new version public key, and updates the local cache after verification; constructing an anomaly detection model in combination with the key version dispersion and the update frequency standard deviation, and triggering a security level adaptive dynamic threshold rollback mechanism; quantum security key synchronization, client cache abnormity real-time self-healing and network resource optimization are realized, and an attack window in a key rotation period is eliminated.