28 results about "Multicast network" patented technology

The invention discloses a door lock collaborative identity recognition method and system, and the method comprises the steps: obtaining a locally stored MAC-face binding relation table according to face recognition verification completed by a resident through an intelligent door lock; according to the moving path of the resident from the floor entrance to the home door lock, identity recognition is completed through cooperation of multicast communication and the home door lock, an identity confirmation result is obtained, and a directional multicast network is constructed; according to a leaving event that a resident opens a door lock from a room, triggering a passing door lock to collect leaving person information, and obtaining a leaving person identity confirmation result; and selecting to send a unicast or multicast confirmation message by the own door lock according to the completion degree of identity confirmation of the leaving person, and triggering the passing door lock to send an IGMP leaving message to the router to obtain a simplified multicast forwarding table. According to the embodiment of the invention, seamless identity cooperation of the whole process from home returning to home leaving can be realized, and the automation degree of home security and protection and the user experience are improved.

The invention discloses a reliable recognition method and system for door lock cooperation, and the method comprises the steps: building a binding relation between a mobile phone MAC address and a face feature vector according to a door opening event of the first face recognition of a resident, and constructing a directional multicast network based on the MAC address; according to the movement of the resident on the home returning path, a recognition request is sent to a directional multicast network through a door lock by collecting an MAC list and capturing a human face, and a resident identity recognition result is obtained; according to an identification request that a subsequent door lock encounters face shielding, a data complementation mechanism of a previous door lock is triggered, and service takeover is realized through an IGMP leaving message, so that a complete identity identification result is obtained; and according to the resident leaving trigger event, a leaving message is transmitted through a directional multicast network, the identity of a leaving person is confirmed through a passing door lock, and an in-home duration statistical result is obtained. According to the embodiment of the invention, the identity recognition is high in reliability, the single-point fault can be complemented, and the value-added service is precise.

The invention discloses a data recovery method and device, equipment, a medium and a product, and relates to the technical field of data processing, and the method comprises the steps: obtaining at least one recovery request message sent by a consumer and / or a multicast network; analyzing the recovery request message to obtain a consumer port identifier, a request type and a difference data packet sequence corresponding to the consumer port identifier; performing de-duplication processing on the difference data packet sequence based on the consumer port identifier and the request type to obtain at least one recovery data packet sequence and a sending identifier corresponding to the recovery data packet sequence; and sending the recovery data packet to the consumer and / or the multicast network based on the sending identifier and the consumer port identifier. By adopting the technical scheme, the recovery request message is subjected to deduplication and merging processing, so that repeated uploading of the recovery request is effectively filtered, the resource occupancy is reduced, and the problems of repeated transmission of the recovery request and repeated issuing of the recovery data are solved.

This invention discloses a multicast message processing method, apparatus, electronic device, and storage medium. The method includes: acquiring the multicast source and receiver of the multicast message, and determining a first virtual local area network (VLAN) packet where the multicast source is located and a second VLAN packet where the receiver is located; acquiring the port type and port status of the output port of the multicast source; and synchronizing software entry content to the underlying software development kit (SDK) hardware entry when the first VLAN packet and the second VLAN packet are different and the port type and port status meet preset conditions. This invention solves the problem that some multicast receiving network elements in a multicast network cannot perform multicast group joining, prevents multicast message transmission failures due to port failures of the multicast source, and ensures the stability of multicast services.

A content selector switch selects, based on a received request for content from a particular remote control device, a multicast network on which to provide the requested particular content. Each multicast network channel of the plurality of multicast network channels is mapped to a respective video channel and each remote control device in the facility (e.g., hotel) is mapped to a respective video channel that the TV controlled by the remote control device stays tuned to. The content selector switch performs the selection by identifying which remote control device in the facility sent the request and selecting the multicast network channel that is mapped to the RF video channel the identified remote control device is mapped to. The content selector switch then provides the specific content on the selected multicast network channel to a multicast-to-channel output device that provides the content on the RF video channel for the TV tuned to that RF video channel to display.

This disclosure provides a multicast network traffic scheduling method, system, electronic device, and readable medium, belonging to the field of communications. The method includes: dividing the uplink of an access node into multiple link groups, each link group containing multiple uplinks corresponding to the same relay node; and dividing multiple downlink multicast sources from the access node into multiple source groups; constructing a weight matrix, where rows correspond to source groups and columns correspond to relay nodes; and determining unicast routes for each source group based on the weight matrix, so that each source group selects the node with the highest weight among multiple relay nodes as the traffic-carrying node, thereby distributing traffic from different source groups to different relay nodes. The multicast network traffic scheduling method, system, electronic device, and readable medium provided in this disclosure can achieve load balancing and reduce congestion risk; simultaneously, it can be implemented using conventional routing strategies without changing the terminal and multicast protocol, resulting in low modification costs and strong scalability.

A content selector switch selects, based on a received request for content from a particular remote control device, a multicast network on which to provide the requested particular content. Each multicast network channel of the plurality of multicast network channels is mapped to a respective video channel and each remote control device in the facility (e.g., hotel) is mapped to a respective video channel that the TV controlled by the remote control device stays tuned to. The content selector switch performs the selection by identifying which remote control device in the facility sent the request and selecting the multicast network channel that is mapped to the RF video channel the identified remote control device is mapped to. The content selector switch then provides the specific content on the selected multicast network channel to a multicast-to-channel output device that provides the content on the RF video channel for the TV tuned to that RF video channel to display.

Embodiments of the present application relate to the technical field of communication, and disclose a multicast method, which comprises the following steps: determining virtual machine information of a target virtual machine; converting the virtual machine information into virtual port information corresponding to a preset SDN controller; and sending the virtual port information to the SDN controller, so that the SDN controller adds the target virtual machine into a multicast group of a virtual multicast network corresponding to a target cloud platform; the virtual multicast network is constructed in advance by the SDN controller according to network configuration information; the network configuration information is converted from logical network information of the target cloud platform; and the target cloud platform comprises the target virtual machine. In the above manner, the embodiments of the present application improve the processing efficiency of multicast services in a cloud environment.

A system and associated methods provide procedures for establishing multicast connections and forwarding multicast content from a source to a subscriber when an ingress provider edge in communication with the subscriber is connected to an egress provider edge device belonging to an EVPN instance, especially in cases where the egress provider edge device is not receiving content from the source. The system configures “backup” provider edge devices belonging to the EVPN instance to temporarily forward the multicast content to the egress provider edge device on behalf of the source, enabling the ingress provider edge device and subscriber to continue to receive the multicast content from the source while the multicast network adjusts to recognize a new egress provider edge device. Methods of establishing connections between the ingress provider edge device and the correct egress provider edge device are also provided to avoid flooding and inefficient content forwarding throughout the network.

A resource optimization processor is disclosed for inclusion in peer routers. The resource optimization processor performs a method for resource optimization of the routers. The method includes disabling an inter-switch link (ISL) between peer routers and monitoring downstream links between a primary router and downstream devices connected to the primary router. The method further includes identifying a failure of at least one downstream link and enabling the ISL between the first router and the second router for the failed downstream link upon identification of the failure.

A system and associated methods provide procedures for establishing multicast connections and forwarding multicast content from a source to a subscriber when an ingress provider edge in communication with the subscriber is connected to an egress provider edge device belonging to an EVPN instance, especially in cases where the egress provider edge device is not receiving content from the source. The system configures “backup” provider edge devices belonging to the EVPN instance to temporarily forward the multicast content to the egress provider edge device on behalf of the source, enabling the ingress provider edge device and subscriber to continue to receive the multicast content from the source while the multicast network adjusts to recognize a new egress provider edge device. Methods of establishing connections between the ingress provider edge device and the correct egress provider edge device are also provided to avoid flooding and inefficient content forwarding throughout the network.

A broadcasting aware edge-device network product comprising two or more NMOS nodes, a look-up table and an SDP file re-writer. Each NMOS node is connected to a different network segment and receives SDP files from the network segment to which the NMOS node is connected. The look-up table stores network address translation rules between a first and a second network segment. The SDP file re-writer generates a modified SDP file by re-writing an SDP file received from one of the NMOS nodes by modifying the destination address according to the look-up table. The SDP file re-writer forwards the modified SDP file to the other NMOS node. The other NMOS node registers the modified SDP file with another network segment.

A communication system 1 includes relay devices 20 and 30 that participate in an IP multicast network. The relay device 20 receives a multicast packet from a terminal 10 and sends out the multicast packet to the IP multicast network. The relay device 30 receives the multicast packet and distributes the multicast packet to a terminal 40. The relay device 30 holds membership information that associates a process with a multicast group in which the process participates, and connection information that associates a process with a connection established between the process and the relay device 30. The relay device 30 receives a multicast packet, refers to membership information to extract processes associated with a multicast group of the multicast packet, refers to connection information for each of the extracted processes to extract a connection associated with that process, and, using each of the extracted connections, converts and forwards the multicast packet so that the multicast packet can be transmitted via that connection.

One aspect can provide a system and method for selective data forwarding in a multicast network. During operation, a querier router in the multicast network receives, at a first port of, a query-response packet from a network device in response to an all-host query sent by the querier router and add the first port to a port list comprising a number of ports coupled to non-querier devices in the multicast network. In response to receiving a multicast-join message, the querier router can forward the multicast-join message to the ports on the port list comprising the first port except for a port that receives the multicast-join message. Forwarding the multicast-join message to the first port causes the multicast-join message to be received at a second port of a layer-2 switch, which allows the layer-2 switch to forward unknown multicast data packets to the querier device via the second port.

A machine learning hardware accelerator architecture and associated techniques are disclosed. The architecture features multiple memory banks of very wide SRAM that may be concurrently accessed by a large number of parallel operational units. Each operational unit supports an instruction set specific to machine learning, including optimizations for performing tensor operations and convolutions. Optimized addressing, an optimized shift reader and variations on a multicast network that permutes and copies data and associates with an operational unit that support those operations are also disclosed.

The application discloses a discrete modulation continuous variable quantum multicast network system and a communication method thereof, and relates to the technical field of quantum communication. The method comprises the following steps: each source node generates a double-mode compressed light, i.e. signal light and probe light; each source node measures the signal light, monitors the light intensity of the probe light, and corrects the light intensity; each target node measures the corrected probe light; each source node performs quantum entanglement discrimination according to the measurement results of the signal light and the probe light, performs block modulation and encryption on the to-be-sent message when the quantum side channel is in an entangled state, sends the modulated message to each target node, and performs exclusive OR processing on the encrypted messages sent by all the source nodes and sends the processed messages to each target node; and each target node decodes the exclusive OR processed message according to the signal light and the modulated message to obtain the to-be-sent message of each source node. The method can improve the defense capability against optical injection attacks.

The application discloses a door lock cooperative identity recognition method and system, and the method comprises the following steps: obtaining a MAC-face binding relationship table stored locally according to face recognition verification completed by a resident through a smart door lock; completing identity recognition cooperatively with the smart door lock through multicast communication according to the moving path of the resident from a floor entrance to the smart door lock, obtaining an identity confirmation result and constructing a directed multicast network; triggering the collection of information of a person leaving home by passing through a door lock according to a leaving-home event of the resident opening the door lock indoors, obtaining an identity confirmation result of the person leaving home; and selecting a unicast or multicast confirmation message to be sent by the smart door lock according to the completion degree of the identity confirmation of the person leaving home, triggering the sending of an IGMP leave message to a router by the door lock passing through, and obtaining a simplified multicast forwarding table. By using the embodiment of the application, seamless identity cooperation in the whole process from coming home to leaving home can be realized, and the automation degree and user experience of home security are improved.

This application discloses a label-based SDN multicast method, apparatus, device, medium, and product applied to multicast management in SDN. The method includes: when a user constructs a multicast group, assigning a label corresponding to the multicast address to the multicast group and generating a flow table to guide multicast packets to multicast members; sending the flow table to the SDN switches on each compute node, so that the SDN switches add labels to the multicast packets according to the flow table after the multicast packets are sent from the multicast source, and forward the multicast packets to each multicast member in the multicast group based on the labels in the multicast network; wherein each compute node carries either a multicast source or a multicast member. This application enables protocol-independent, flexible, and programmable multicast in cloud scenarios.

This invention discloses a method and system for coordinated unlocking of front and rear door locks. The method includes: front door linkage triggering processing: generating an entry record based on the complete behavior sequence detected by the front door lock to obtain a linkage trigger signal; rear door security decision processing: performing rear door status detection and multi-level personnel identity verification based on the unlocking request message received by the rear door lock to obtain an unlocking decision result; reverse guidance control processing: establishing a cross-lock audio and video channel based on a doorbell event that the front door lock does not respond to, to obtain a reverse unlocking command; schedule comparison guidance processing: automatically unlocking and providing spatial guidance when the front door lock rings by comparing visitor arrival schedule information; and dynamic addressing coordination processing: performing target rear door lock positioning processing based on the mobile terminal location information detected by the door lock within the multicast network to obtain a targeted notification strategy. Using this invention, the coordinated response efficiency and user experience of smart door locks can be improved.

The application discloses a kind of community mutual aid method and system of multi-door lock coordination, method includes: according to the selection operation of the user of the party of entrusting and the user of the party of being entrusted on respective intelligent door lock, to property management system registration mutual aid identity information, complete multicast network registration;According to the user of the party of entrusting and the business type of the user of the party of being entrusted, generate the entrustment request multicast message and send, and according to user confirmation operation generates entrustment confirmation message and returns the door lock of the party of entrusting;According to the face brushing operation of the user of the party of being entrusted in unmanned shop door lock, trigger face verification multicast message, and the shopping list is sent to shop door lock after the door lock of the party of entrusting receives verification pass message;According to the face brushing payment operation of the user of the party of being entrusted after completing shopping, the door lock of the party of entrusting is sent to payment machine after the door lock of the party of entrusting is confirmed, and payment is completed.Utilize the embodiment of the application, can solve the shopping problem of old people with difficulty in movement, improve the efficiency of multi-party information interaction, guarantee community mutual aid convenient and reliable.

The application discloses a door opening method and system cooperating with a door lock, and the method comprises the following steps: according to the detection result of a multimedia authorization device on an indoor authorized person, reporting the authorized person identifier to a gateway device through an enhanced multicast protocol message, and establishing a binding relationship between the authorized person identifier and an interface in a multicast forwarding table by the gateway device; according to the collection result of a door lock device on a visitor biological feature, sending a multicast media stream containing the visitor biological feature to a multicast network; according to the reception of the multicast media stream by the gateway device, extracting the visitor biological feature and querying the authorized association relationship, and executing a differentiated forwarding strategy based on the query result; and according to the presentation of the forwarding content and the recognition result of the authorized action of the multimedia authorization device, completing authorization confirmation and triggering a door lock opening operation. By using the embodiment of the application, the reliability, instantaneity and flexibility of the door opening authorization process can be improved, and the safety of user biological feature data is ensured.

This invention provides a method and system for collaborative control of unmanned aerial vehicle (UAV) swarms, relating to the field of UAV swarm control technology. The system includes: a ground station, multiple master drones, and at least one slave drone; the ground station and multiple master drones form a multicast network; each master drone has at least one slave drone mounted below it via a magnetic connector; the multicast network enables state synchronization between the ground station, master drones, and slave drones; each slave drone is equipped with a wide-angle camera and a zoom camera, and the dual cameras identify targets to control the slave drone for precise target engagement; this achieves a closed-loop control chain from ground command to swarm collaboration and then to precise slave drone engagement.

The invention relates to a network audio and video signal multicast output method for reducing time delay by reducing network bandwidth, which comprises the following steps of: when a broadband code rate in a multicast network meets a preset condition, triggering an audio and video compression mechanism; the mechanism comprises the following steps: separating a video stream in an input audio and video signal, and carrying out foreground and background segmentation processing on a video frame in the video stream; compressing the foreground motion area by adopting a dynamic video coding algorithm to obtain a foreground compressed stream; compressing the static background image by adopting a static image coding algorithm to obtain a background compressed image; packaging the foreground compressed stream and the background compressed image into a composite video data packet; and distributing the composite video data packet to a client through a multicast protocol. According to the method, the compression strategy can be adaptively adjusted based on the real-time network state, and on the premise of ensuring the basic audio and video quality, the data bandwidth occupation in the network audio and video signal multicast transmission process is effectively reduced, and the end-to-end transmission delay is remarkably reduced.

This invention relates to the field of network communication multicast technology, and provides a method and apparatus for transmitting BIER multicast information. The method calculates the bandwidth index of each link using link state information; combines this with the BSL values ​​of each BFR device to calculate the cost value of each link, which is then used as a reference value for the routing algorithm to calculate the final forwarding path of the BIER message. This invention solves the problem of uneven traffic distribution in BIER multicast networks by using the load of each link in the topology as a constraint, and incorporating the different BSL values ​​of BFRs under two roles into the routing calculation. The routing result fully considers the forwarding capacity of each node in the network and the remaining bandwidth of the links, resulting in a relatively even distribution of traffic across the links, reasonable resource allocation, and improved network stability.

The application discloses an on-chip network and a multicast message transmission method, and belongs to the chip technical field.The on-chip network comprises at least one first processing unit and at least one multicast group;the first processing unit comprises sequentially connected first nodes, an adapter and a first router;the multicast group comprises a multicast network, a second processing unit and at least one third processing unit, the second processing unit comprises sequentially connected second nodes, the adapter and a second router, the third processing unit comprises sequentially connected second nodes, the adapter and the first router, and the second nodes and the second router are connected with the multicast network respectively;the first router and the second router are connected through a link; and the second router is used for forwarding the multicast message forwarded by the first router to the multicast network.The application can design the on-chip network based on an artificial intelligence algorithm, realizes the purpose of multicasting the message from a source node to target nodes in the multicast group, can simplify the algorithm, and reduces the cost.

Described is a method of delivering content over network using an approach referred to here as “Multicast Assisted Unicast Delivery” (MAUD), as a multicast network is used to assist, rather than substituting for, an otherwise unicast path. Content is requested by client devices from a content server over unicast. These unicast requests are sent via a first and a second proxy, before being sent by the second proxy to the content server, all over unicast. The responses containing the requested content is sent back to the second proxy over unicast from the content server. The second proxy processes the received unicast responses and sends the responses over a multicast stream to the first proxy. The first proxy processes the received responses and sends them onto the requesting client devices over unicast.

A content selector switch selects, based on a received request for content from a particular remote control device, a multicast network on which to provide the requested particular content. Each multicast network channel of the plurality of multicast network channels is mapped to a respective video channel and each remote control device in the facility (e.g., hotel) is mapped to a respective video channel that the TV controlled by the remote control device stays tuned to. The content selector switch performs the selection by identifying which remote control device in the facility sent the request and selecting the multicast network channel that is mapped to the RF video channel the identified remote control device is mapped to. The content selector switch then provides the specific content on the selected multicast network channel to a multicast-to-channel output device that provides the content on the RF video channel for the TV tuned to that RF video channel to display.

The invention discloses a door lock storage optimization method and system, and the method comprises the steps: detecting the appearance of a monitoring target according to an intelligent door lock, sending a joining message to a collaborative awareness multicast network, issuing a target discovery request, and starting a local cache and timing control mechanism; according to received target feature information sent by other door locks, performing comparison and quality evaluation on the target feature information and locally extracted features, if the target feature information and the locally extracted features are the same target, resetting a timer and updating a collaborative equipment list, and deciding an optimal view video fragment; according to the optimal view decision result, marking the video fragments with the selected timestamps to be in a to-be-stored state, and only persistently storing the marked fragments to a local storage medium after the timer is overtime; and according to a user playback request, requesting a corresponding door lock and receiving a specified video fragment, and after integration, presenting a complete multi-view time sequence video. By using the embodiment of the invention, the occupation of the storage space can be reduced, and convenient video playback experience with coherent targets and multi-view fusion is provided for the user.