203 results about "Multicast" patented technology

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 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 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 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 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 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 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.

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.

The invention discloses a wireless screen projection method, a management platform, screen projection equipment and a wireless screen projection system, is applied to the technical field of wireless screen projection, and aims to solve the problems of low accuracy, low efficiency, complex configuration and maintenance and poor flexibility of screen projection equipment discovery in a cross-three-layer network environment. Determining target wireless network access equipment accessed by the terminal equipment according to the screen projection request; determining target screen projection equipment according to the target wireless network access equipment in combination with the established mapping relation between the screen projection equipment and the wireless network access equipment; and determining a target multicast proxy forwarding strategy corresponding to the target screen projection device, and sending the target multicast proxy forwarding strategy to the network device, so that the network device combines and establishes a communication connection between the terminal device and the target screen projection device. According to the invention, the target screen projection equipment can be quickly and accurately determined, the configuration and maintenance complexity and cost are reduced, and the use flexibility is improved.

The application provides a wireless local area network system, a communication method and device. The wireless local area network system comprises a controller, a first access point and a second access point, the first access point is associated with a first station, and the second access point is associated with a second station. The controller is configured to generate a first group temporary key GTK, and send the first GTK to the first access point and the second access point. The first access point is configured to encrypt data by using the first GTK to obtain a first message, and multicast or broadcast the first message. The first access point is configured to send the first GTK to the first station, and the second access point is configured to send the first GTK to the second station. The scheme provided by the application can improve the multicast or broadcast communication efficiency of the access point in the wireless local area network system.

There is provided an apparatus, said apparatus comprising, at a multicast / broadcast session management function of a core network, means for receiving information related to a shared centralised unit user plane, CU UP for a multicast / broadcast session, from a radio access network, RAN, node or an access management function of the core network, means for determining, based on the information, whether to configure a user plane function of the core network to deliver data or to terminate delivery of data for the multicast / broadcast session towards the shared CU UP and means for, if so, configuring the user plane function to deliver data or to terminate delivery of data for the multicast / broadcast session towards the shared CU UP.

The invention discloses a data transmission method and device, and relates to the wireless communication technology, and the method comprises the steps: transmitting a subscription request message to a base station based on a subscription interface; wherein the subscription request message is used for subscribing measurement data of the multicast broadcast session; receiving indication information sent by the base station based on the subscription interface; wherein the indication information comprises a measurement report corresponding to measurement data collected by the base station from the terminal equipment; generating a decision result corresponding to the indication information, and sending control request information corresponding to the decision result to the base station based on the instruction issuing interface; the base station sends the control request information to the terminal equipment; through interface interaction between the intelligent controller and the base station and dynamic switching of a propagation mode, the number of terminals and changes of network states are adapted, and it is guaranteed that data transmission of multicast broadcast sessions is matched with terminal configuration requirements.

Apparatus and methods for multicast service continuity for radio resource control (RRC) user equipment apparatuses (UEs) in mobility are disclosed. In an aspect, a UE receives, from a first network node of a first cell, a multicast service while operating in an RRC inactive state or an RRC idle state in the first cell. The UE further receives an indication of a packet data convergence protocol (PDCP) counter synchronization across multiple network nodes for the multicast service, where the multiple network nodes include the first network node. The UE further selects a second cell for camping. The UE further continues to receive, based on a PDCP variable continuity, the multicast service in the second cell from a second network node of the second cell, where the multiple network nodes include the second network node, and where the PDCP variable continuity is responsive to the indication of the PDCP counter synchronization.

The application relates to a network traffic generation method, device, equipment and storage medium. The method comprises the following steps: receiving a plurality of network data packets; in the case that target network data packets to be copied are identified from the plurality of network data packets, for each target network data packet, performing copy processing on the target network data packet through a preset multicast processing mechanism to obtain a plurality of first network data packet copies of the target network data packet; in the case that the first network data packet copy needs to be reprocessed, performing reprocessing operation on the first network data packet copy; in the case that the first network data packet copy needs to be copied, performing copy processing on the first network data packet copy based on the preset multicast processing mechanism to obtain a plurality of second network data packet copies of the first network data packet copy; and distributing the plurality of second network data packet copies to corresponding switch output ports and forwarding to target network equipment. The method can improve the flexibility of network traffic generation.

The invention discloses a low-orbit satellite video conference secure transmission method and system based on a rolling key chain and an ABE, electronic equipment and a storage medium, and belongs to the crossing field of satellite communication and information security, and the method comprises the following steps: S1, a ground terminal system carries out encryption and uplink transmission on a video stream; s2, processing uplink data by the satellite network relay and video service system; and S3, distributing the multicast encrypted data of the satellite network. The method improves the transmission efficiency and safety, and is especially suitable for a low-orbit satellite network scene.

The invention discloses a dynamic multicast joining authentication method and system based on a zero-trust model. The method comprises the steps of node access request triggering, identity recognition, context collection, behavior analysis and risk assessment, multi-factor dynamic authentication, access authorization and strategy issuing, continuous monitoring after access and dynamic right withdrawal. The system comprises an identity recognition module, a context sensing module, a behavior evaluation module, a multi-factor authentication module, an access control and decision module and a continuous monitoring and right withdrawing module. According to the invention, by introducing a zero-trust idea and a dynamic scoring mechanism, multi-factor verification of the join authority of the multicast node, a safe closed loop that join needs to be verified each time and continuous risk monitoring and authority revocation after access are realized, and the safe blind spot of'authorization, namely permanent credibility 'is solved.

A service data processing method and apparatus, and a device, and pertains to the field of communications technologies. The service data processing method in embodiments of the application includes: forwarding, by a source node based on an MBS capability of a target node, service data of a target multicast service to the target node through a data forwarding tunnel of a dedicated bearer of a terminal; where the terminal receives the target multicast service from the source node through a source multicast bearer.

Apparatus and methods for discovery, synchronization and operation of network components. In one embodiment, the network comprises a passive optical network (PON), and the components being synchronized include an enhanced OLT (eOLT) and one or more enhanced ONUs (eONUs). The eOLT is configured in one variant to utilize control protocol messaging (such as those used in the MPCP or Multi Point Control Protocol) to communicate particular synchronization parameters and durations to the eONU(s), whether individually or via multicast / broadcast. The synchronization parameter and durations are selected to optimize discovery and synchronization of the eONU(s) with the eOLT, and also optimize (subsequent) normal operation, in one implementation through selection of synchronization patterns which enable most efficient AGC determination, clock recovery (CDR), SBD, and EBD identification.

This invention relates to the field of PCIe switch technology, specifically to a PCIe switch comprising a PCIe switch body, on which multiple USP ports, NTB ports, and DSP ports are configured. Each USP port and NTB port is configured with a multicast manager for multicast operations, and each USP port and NTB port is configured with a multicast request management module. The multicast request management module defines a three-bit register mapped in the bar space of the USP / NTB port. The PCIe switch of this invention supports connecting multiple RCs, and each RC connected to the USP / NTB port can send multicast data packets. Furthermore, it not only supports conformity checks on multicast data packets but also generates routing tables and sends them to the corresponding ports. It also solves the congestion problem caused by multiple RCs simultaneously sending multicast data packets.