320 results about "Multicast" patented technology

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 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 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 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.

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.

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.

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 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 application provides a data transmission method, a distributor, a data transmission system and a medium, relates to the technical field of computers, and the method is applied to a distributor device arranged between a zero-trust server cluster and a switch, and comprises the following steps: receiving a client virtual IP and a target server MAC address sent by a target server after the target server is logged in at a client and is assigned a virtual IP; writing the corresponding relationship into a first ARP table; receiving an access data packet sent by the target server, forwarding the access data packet to a business system through the switch; receiving a response data packet sent by the switch, the response data packet having a client virtual IP as a destination IP; querying the first ARP table according to the destination IP to obtain the target server MAC address, forwarding the response data packet to the target server, and returning the response data packet to the client by the target server. According to the application, the virtual IP and the server MAC are mapped and stored by the distributor, accurate packet forwarding of the cluster is realized, and resource waste caused by multicast of the switch is avoided.

The invention relates to a Qt-based ship navigation information simulation method, which aims at solving the problem of lack of real navigation information during single-machine debugging of a ship shell sonar, and specifically comprises the following steps of: receiving motion parameters and mode selection by constructing a graphical user interface; a timer is used for triggering, and coordinate conversion and data updating are carried out according to a constant-speed direct navigation, circular motion or motion trail binding model; and packaging the updated navigation parameters by adopting a multi-thread technology and a signal slot mechanism, and sending the packaged updated navigation parameters in the form of a UDP multicast data packet. According to the method, the dynamic navigation information of the ship can be simulated with high simulation degree, a reliable test data source is provided for the ship shell sonar, single-machine debugging of the ship shell sonar is effectively supported, and the on-ship joint debugging period is shortened.

The application discloses a multicast or broadcast access register verification method and system, and belongs to the chip verification technical field, and comprises the following steps: obtaining a register model corresponding to a device under test; reloading a driver configuration global parameter of a bus agent in a multicast or broadcast test case; obtaining all register nodes in the register model according to the test case, screening all the register nodes according to a register node list to obtain a corresponding register node sequence; obtaining all registers corresponding to each register node in the register node sequence, and screening all the registers of each register node in the register node sequence according to a preset register attribute and a register name of the register list; performing write access on each register to obtain a first register, and performing read access on the first register, thereby improving the verification efficiency.

The application proposes a method for parsing and mapping emergency broadcast messages to 3GPP broadcast, taking the emergency information adaptation device as a heterogeneous system core gateway, receiving the emergency broadcast messages conforming to the GY / T 385-2023 specification and performing validity verification, realizing accurate mapping of core fields such as message identification, level, coverage area, content, time parameter, etc. to corresponding fields of 5G multicast broadcast multimedia service, encapsulating as 5G broadcast session data according to the 3GPP TS 26.348 specification and sending to the broadcast multicast service center of the 5G core network through the standard interface. The application realizes end-to-end protocol conversion of emergency broadcast and 5G broadcast, the system is low-coupled and easy to deploy, resource utilization is efficient, and accurate and rapid delivery of emergency broadcast messages to various terminals is ensured, and the scheme has openness and interoperability.

A method, apparatus, and system are provided for HARQ feedback en- / disabling for multicast. In one embodiment, a network node is configured to communicate with at least a first wireless device. The network node includes processing circuitry configured to determine a Hybrid Automatic Repeat reQuest, HARQ, feedback mode of a plurality of HARQ feedback modes for the first wireless device to implement where each of the plurality of HARQ feedback modes is different from each other, and cause transmission of radio resource control, RRC, signaling to indicate for the first wireless device to implement the determined HARQ feedback mode of the plurality of feedback modes.

The application discloses a multicast switching method and device, electronic equipment and a storage medium, and belongs to the technical field of communication. In the method, multicast data of a multicast source is received by a network device with PIM FRR function through a main link and a backup link. When the main link fails, the backup link of the multicast is switched to the main link at a data forwarding plane, so that the multicast data from the backup link is sent, and the backup link is switched to a new main link at a control plane. Instead of sending the multicast data from the backup link after the switching at the control plane and the data forwarding plane is completed, the amount of multicast data loss during multicast switching can be greatly reduced.

The invention discloses a calculation task allocation method and system for a wide-area intelligent computing network, and belongs to the field of intelligent computing networks, and the method comprises the steps that a data center for allocating tasks issues a resource request to a data center for all non-allocation tasks through a first multicast for a calculation unit required by a to-be-allocated calculation task; the data center which does not allocate the task calculates the number of calculation units which can be provided according to the resource request issued by the first multicast and the scheduling strategy; the data center which does not distribute the task adopts the second multicast to respond to the resource request issued by the first multicast according to the number of the computing units which can be provided; and the data center of the distributed task receives the response of the second multicast, and issues the calculation task to be distributed to the data center which has the fastest response speed and can provide enough calculation units. The method does not depend on the configuration of a wide area network and can be realized as long as the network is reachable, and the task allocation efficiency is improved.

The disclosure describes systems and methods for retaining low-power connections in multilink networks. An access point can include a plurality of radios, each operating on a different frequency band. The access point can establish connections with clients. The access point can receive a frame indicating the connected clients are entering sleep mode. In response, the access point can cause a radio, operating on a longer range and lower power band, to go into sleep mode, while maintaining a lower power connection with the clients. The access point can switch off the other radios operating on higher frequency bands. During a wakeup period, the access point can transmit a beacon via the lower power radio, indicating to the clients that the access point has broadcast and multicast (BCMC) data. The access point can transmit the BCMC data via the low-power radio to the clients.

The present invention relates to Multicast and Broadband Service Communication with Mobile Terminal Small Data Transmission. The method comprises: receiving configuration information of a plurality of multicast MBS sessions and configuration information of a plurality of broadcast MBS sessions; receiving a paging transmission comprising at least one paging record, the paging record comprising an MT-SDT indicator and a paging group list comprising a plurality of MBS session identifiers; initiating a RRC connection resume procedure based on the at least one paging record, the resume cause being set to indicate MT-SDT in case that the conditions for receiving data in RRC_INACTIVE state are determined to be fulfilled and all MBS sessions indicated by the MBS session identifiers comprised in the paging group list are configured to receive data in RRC_INACTIVE state; and the resume cause being set to indicate MT-Access in case that the conditions for receiving data in RRC_INACTIVE state are determined to be not fulfilled or not all MBS sessions indicated by the MBS session identifiers comprised in the paging group list are configured to receive data in RRC_INACTIVE state.

The invention discloses a multicast interaction method, device and system and computer equipment, the method is applied to a mobile terminal of a multicast system, the multicast system further comprises at least one piece of Internet of Things equipment, and the method comprises the following steps: sending a multicast query message to the Internet of Things equipment; receiving a response message sent by the Internet of Things equipment in response to the multicast query message; determining a reference multicast rate upper limit of the mobile terminal according to the received response message; under the condition that the mobile terminal interacts with the Internet of Things equipment, optimizing an interaction process with the Internet of Things equipment based on the upper limit of the reference multicast rate; wherein the multicast query message sent by the mobile terminal to the Internet of Things equipment meets the condition that when the Internet of Things equipment responds to the mobile terminal, a response message exceeding the upper limit of the reference multicast rate of the mobile terminal needs to be sent to the mobile terminal. According to the invention, the success rate and efficiency of multicast interaction messages can be improved, and the user experience is improved.

A method, performed by a wireless device (130), for handling a configuration. The wireless device (130) operates in a wireless communications network (100). The wireless device (130) determines (302), while the wireless device (130) lacks an active connection with any network node (110) operating in the wireless communications network (100), whether or not the wireless device (130) is to perform one or more measurements for broadcast or multicast traffic. The wireless device (130) determines (303), based on a first result of the determination, whether or not to establish a connection with a first network node (111) operating in the wireless communications network (100) to receive the configuration. The configuration is to perform the one or more measurements. The wireless device (130) then establishes (304) the connection with the first network node (111) based on a second result of the determination of whether or not to establish the connection.

This invention relates to the field of industrial communication technology and discloses a communication method and apparatus for industrial switches to connect walkie-talkies without a gateway. The method involves a management unit receiving a walkie-talkie terminal registration request, assigning a unique virtual LAN identifier, configuring a multicast group address, and establishing a binding relationship. An analog audio interface module receives analog voice signals and accompanying signaling, performs sampling, analog-to-digital conversion, compression encoding, and parses the PTT trigger signal to generate a transmit enable signal. Data frames are then encapsulated and sent to the switching chip. The switching chip queries the forwarding table based on the transmit enable signal and the walkie-talkie identifier, adds a virtual LAN identifier, and forwards the data frames via multicast. The management unit continuously monitors link quality and automatically switches the channel to a backup port when quality deteriorates, ensuring stable and reliable communication, simplifying the network architecture, and reducing costs.

The application discloses a kind of parallel test architecture design methods of integrated display unit based on Ethernet technology, comprising the following steps: S10, setting includes AFDX simulation card, first Ethernet switch, second Ethernet switch, Ethernet card for testing system to test 6 IDU products simultaneously;S20, AFDX simulation card is used as data sending test module, and ARINC664 test data frame needed by IDU product work is generated by AFDX simulation card through test program control;S30, two Ethernet switches are configured as special topological structure needed for adapting multiple IDU parallel work;S40, the public port 1 of first Ethernet switch is connected with AFDX simulation card port A, receives the test data of simulation card, and is forwarded to other ports in multicast group 1 by multicast form;S50, each port in multicast group 1 of first Ethernet switch receives the test data returned by each IDU product interface A;S60, reconstructs the bottom protocol stack of Ethernet card based on NPCAP.

The invention discloses a low earth orbit satellite network deterministic multicast routing method based on a time expansion graph, which relates to satellite and communication technologies, and comprises the following steps: constructing a time expansion graph to represent time slot characteristics, dynamic network topology and time-varying network resources of a low earth orbit satellite network; pruning the original time expansion graph according to the working characteristics of the CSQF mechanism and multicast service transmission requirements, and providing a solution space for deterministic multicast routing calculation; and by taking the pruned and enhanced time extension graph as input, calculating a deterministic multicast route from a source node, and selecting a transmission edge with sufficient capacity and a storage edge conforming to a CSQF mechanism hop by hop until all virtual nodes are reached, so that the obtained route has the maximum bottleneck capacity on the premise of meeting the multicast service time delay upper limit requirement. According to the method, a low-complexity algorithm is designed, the link with the optimal resource and the transmission time slot with the time delay guarantee are selected hop by hop in the graph, and the multicast tree with the time attribute is constructed, so that end-to-multi-end deterministic guarantee is provided.

The invention discloses a novel multi-subnet multicast tree construction and multicast data transmission method and device, and belongs to the technical field of wireless communication ad hoc networks, and the method comprises the steps: constructing an intra-subnet minimum-cost multicast tree based on least relay nodes in a current subnet under the constraint condition in the subnet; constructing an inter-subnet minimum-cost multicast tree which reaches a target subnet and is based on the least cross-network relay nodes under the condition that the inter-subnet constraint condition is met; combining the intra-subnet minimum cost multicast tree and the inter-subnet minimum cost multicast tree together to form a plurality of inter-subnet layered multicast trees; generating a multicast data packet according to the data required to be multicast, and transmitting the multicast data packet according to a relay node formed by the multi-subnet layered multicast tree; the multicast loop problem and the data message redundancy problem in multiple subnets are effectively solved, so that the network bandwidth utilization rate is improved.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods and systems for handling Small Data Transmissions (SDTs) along with New Radio Multicast Broadcast Service (NR MBS) multicast service reception, wherein the UE has multicast MRBs configured in the RRC_INACTIVE state and / or UE can receive the multicast service in the RRC_INACTIVE state.

To provide a display device, a display device cooperation system, and a sound reproduction method for improving convenience and functionality when a plurality of persons view the same video.SOLUTION: A display device (10) that directly transmits an audio signal to an audio signal receiving device (50, 51) by wireless communication without passing through a relay device, the display device including a wireless communication device (18), a display (13), and a controller (11), the wireless communication device transmitting a plurality of types of audio signals by multicast or broadcast wireless communication, supplementary information indicating at least the type of the audio signal is added to each of the plurality of types of audio signals, and the supplementary information includes at least one of information on the types of languages included in the multilingual broadcast signal and priorities of the languages, information on respective channel names when a plurality of broadcast programs are simultaneously displayed, and information indicating an audio reproduction position when a 3D sound source is used.SELECTED DRAWING: Figure 2

Various embodiments of the present disclosure provide method and apparatus for acknowledgement in multicast. A method performed by a terminal device, comprising: transmitting, to a network node, information about acknowledgement, based on a configuration of a resource for the information about acknowledgement. The resource is configured for a plurality of terminal devices including the terminal device, and for at least one Hybrid Automatic Repeat reQuest, HARQ, process. According to embodiments for the present disclosure, manner for acknowledgement in multicast is provided.