9 results about "Multicast network" patented technology

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 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.

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.

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.

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.

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.