176 results about "Multicast message" patented technology

The invention discloses a multi-door-lock cooperative processing method and system, and the method comprises the steps: generating an assistance request IGMP multicast message according to a preset triggering operation detected by a first door lock B and read RFID identification information, and transmitting the assistance request IGMP multicast message to a router; according to the assistance request IGMP multicast message, recording interface information and validity period associated with the RFID identification information in a multicast forwarding table entry, and caching the multicast message; according to the preset triggering operation detected by the second door lock A and the same read RFID identification information, an assisted request multicast message containing the RFID identification information is generated, and the assisted request multicast message is sent to the router; according to the RFID identification information and the multicast forwarding table item, after the validity period is verified to be not expired, the message is directionally forwarded to the first door lock B, the first door lock B sends an assistance confirmation message to the second door lock A, and a robot calling instruction is triggered. According to the embodiment of the invention, low-delay and high-reliability door lock cooperative control can be realized.

The disclosure relates to methods, devices, and systems for wireless communications. In some wireless communications systems, a base station may transmit a multicast message to a group of user equipment (UEs), and the UEs may provide feedback for the multicast message. In some implementations, the base station may configure the UEs to transmit feedback for multicast messages. In some example, the UEs may transmit group-negative acknowledgment (NACK) feedback information for multicast messages that are not successfully received at the UEs. In some other examples, each UE may be configured with UE-specific uplink control channel resources for transmitting hybrid automatic repeat request (HARQ) feedback for a multicast message. In some implementations, a UE may support feedback for both unicast and multicast messages. The semi-static codebook for unicast, multicast, or both may account for whether the UE is capable of concurrently receiving unicast and multicast messages in a slot.

The invention discloses a multi-communication group fusion holding method and system for an intelligent door lock, and the method comprises the steps: building an independent multicast tree taking a feature vector as an identifier according to a communication group request initiated by each main control door lock; generating a multicast message containing a target communication group feature vector and a digital signature according to a merging request sent by the first master control door lock; according to feature vectors exchanged by the master control door locks of the two parties through a secure channel, a target master control door lock initiates feature interception registration, and negotiates and establishes a boundary feature tag rewriting rule; and according to the established forwarding path and the rewriting rule, the audio and video streams of the communication groups of the two parties are subjected to feature tag rewriting through the network boundary router, and then bidirectional intercommunication is realized. By utilizing the embodiment of the invention, the dynamic security isolation and seamless fusion of multiple communication groups can be realized, the network load and transmission delay are reduced, meanwhile, the terminal door lock can realize audio and video intercommunication without sensing the network address of the opposite end or changing the configuration, and the expansibility, the security and the user experience of the system are improved.

The invention discloses an intelligent lock face privacy processing method and system, and the method comprises the steps: an intelligent lock A detects a plurality of faces, and carries out the face segmentation and recognition comparison; if the comparison is successful, performing face privacy processing; if the comparison fails, collaborative privacy processing is carried out; after the other intelligent locks receive the multicast message, the unmatched face images are compared, and if comparison succeeds, face privacy processing is carried out; the intelligent lock A counts a multicast reply message, and if an unreplied intelligent lock exists, a query request is sent to the independent transfer gateway; the independent transfer gateway performs health check, and sends a prompt reply message to the intelligent lock which succeeds in health check; and the intelligent lock A integrates the reply message and the privacy processing result, encodes and generates a video image data stream, and sends the video image data stream to the platform for decoding processing. By using the embodiment of the invention, the protection of the face privacy of the owner can be ensured.

The invention discloses an optimal service discovery method based on explicit multicast assistance, a medium and equipment. The method comprises the steps that a user side obtains an IP address list of a target server through DNS query and caches the IP address list; based on the real-time network topology, generating a shortest path tree from a user side to all target servers by using a Dijkstra algorithm; an explicit multicast message with a head carrying a target IP list is constructed, and the intermediate router splits the message into unicast or sub-multicast messages according to a next-hop interface; and the user side determines the optimal server by monitoring the first effective response message. According to the method, traditional multicast addresses are replaced by explicit multicast, address resources are saved, network repeated traffic is reduced, meanwhile, dynamic path tree optimization and an intelligent message splitting mechanism are combined, service discovery delay is remarkably shortened, the method is suitable for high-concurrency scenes such as a distributed CDN, the Internet of Things and video live broadcast, bandwidth consumption is effectively reduced, and service reliability is improved.

The embodiment of the invention provides a multicast message copying method, a switching chip, a storage medium and an electronic device. The method comprises: receiving and caching a multicast message to be copied, the multicast message to be copied comprising a packet descriptor of the multicast message to be copied and a load of the multicast message to be copied; obtaining and copying a packet descriptor of the multicast message to be copied to obtain N target packet descriptors; the N target packet descriptors are scheduled; and when each scheduled to-be-sent target packet descriptor is sent, obtaining a load of the cached to-be-copied multicast message, splicing the to-be-sent target packet descriptor with the load to obtain a target multicast message, and sending the target multicast message. According to the method, the problem that more cache capacity is needed to store the copied multicast message when the exchange chip copies the multicast message is solved, and the technical effect of reducing the cache capacity in the exchange chip is achieved.

The invention discloses a multicast message transmission method and device, and relates to the technical field of communication. In the method, a first node can send first multicast routing information including multicast routing information of a second node and multicast routing information of a third node and first positioning information used for determining the multicast routing information of the second node to the second node, and after receiving the first multicast routing information and the first positioning information, the second node determines the multicast routing information of the second node from the first multicast routing information according to the first positioning information. In the application, the first node does not need to split the first multicast routing information for the second node to obtain the multicast routing information of the second node. In this way, the number of times of splitting and editing the multicast message is reduced, and the forwarding efficiency of the multicast message is improved.

The invention relates to a network resource pool session synchronization method and device, electronic equipment and a storage medium, and belongs to the technical field of communication, and the method comprises the following steps: packaging an obtained TCP message to obtain a packaged message; the TCP message comprises a handshake message or a waving message; the packaging message comprises a multicast message or a broadcast message; sending the packaging message to a second device in the network resource pool through a preset synchronization line; the packaging message is used for the second equipment to perform session synchronization. According to the network resource pool session synchronization method provided by the invention, the handshake message or the hand waving message is forwarded in real time, so that the session information among the BRAS devices in the resource pool is quickly and accurately synchronized, and the session management capability and the overall network performance of the network resource pool are effectively improved.

The invention discloses a partition network architecture, a routing method, equipment, a medium and a program product, and relates to the technical field of routing, a target network is divided into a plurality of network partitions, first nodes of the network partitions are connected through configured second ports, and therefore interconnection between the network partitions is achieved; when a multicast message needs to be transmitted, transmission between nodes in the same network partition can be realized through the first port and the second port; and meanwhile, the cross-region transmission of the multicast message is realized by using the second port. Each network partition can independently transmit messages in parallel in the partition, cache competition is reduced, the synchronization of multicast routing is optimized, a special multicast message transmission channel between the network partitions is realized by independently arranging a second port for a first node, delay caused by long-distance transmission of the messages is reduced, and the service life of the network partitions is prolonged. The message transmission delay and the blocking risk of the target network are significantly reduced, and the energy efficiency and throughput of the target network are improved.

The invention discloses a door lock collaborative community mutual assistance method and system, and the method comprises the steps: completing multicast registration according to the service type of a hot neighbor or a to-be-assisted old person selected by an owner on an intelligent door lock; according to a hot neighbor object selected by the old person to be assisted on the door lock, generating an assisted purchase request multicast message; the authorized party door lock verifies the identity of the entrusting party to the property management system after receiving the information, generates an entrusting confirmation message according to a user confirmation result, and returns the entrusting confirmation message to the entrusting party door lock; according to a consignment confirmation success result, the entrusting party door lock sends a shopping list input by the old person to the entrusted party door lock; after the entrusted party arrives at the unmanned supermarket, the face is scanned to trigger verification, and a supermarket door lock is opened; and according to a payment request triggered after the delegated person completes article selection, the door lock collects the payment two-dimensional code and sends the payment two-dimensional code to the payment machine to complete payment. According to the embodiment of the invention, the shopping problem of the elderly having difficulty in moving can be solved, the elderly does not need to operate a mobile phone, and the convenience and reliability of community mutual assistance are improved.

A load control system may include control devices for controlling electrical loads. The control devices may include load control devices, such as a lighting device for controlling an amount of power provided to a lighting load, and controller devices, such as a remote control device configured to transmit digital messages for controlling the lighting load via the load control device. The remote control device may communicate with the lighting devices via a hub device. The remote control device may detect a user interface event, such as a button press or a rotation of the remote control device. The remote control device or the hub device may determine whether to transmit digital messages as unicast messages or multicast messages based on the type of user interface event detected. The remote control device, or other master device, may synchronize and / or toggle an on / off state of lighting devices in the load control system.

The present application relates to but not limited to the technical field of communications. Provided are a message processing method, a device, and a medium. The method comprises: encapsulating a bit indexed explicit replication (BIER) header to a multicast message, so as to obtain an encapsulated multicast packet, wherein the BIER header comprises a bitstring field, the bitstring field comprises a first mapping string, and the first mapping string is used for mapping an identifier of the multicast message; and then sending the encapsulated multicast message, such that after receiving the multicast message, a bit forwarding egress router (BFER) can determine a corresponding destination user node on the basis of the first mapping string, and then forwards the multicast message to the corresponding destination user node.

This invention discloses a method and system for rapid vehicle location tracking via door locks. The method includes: configuring topology information containing neighboring door lock addresses for each unit door lock based on a preset community access topology map; the resident door lock sending an IGMP join message to a preset multicast address; generating a discovery message based on the first detection of a Bluetooth tag signal by the unit door lock, and forwarding it to predicted neighbors via unicast according to the neighbor topology; the unit door lock receiving the discovery message switching its Bluetooth detection mode from low frequency to high frequency, forming a relay detection chain along the predicted path; and, based on the condition that the tag's signal strength remains stable near a certain unit door lock, generating a formal announcement multicast message, which is then forwarded by a router to the corresponding resident door lock, completing the vehicle location push. Using this invention, rapid, accurate, and low-power vehicle Bluetooth tag location can be achieved, improving the location response speed and system coordination efficiency in a community environment.

Methods, systems, and devices for wireless communications are described. The network may implement multi-stage energy handshake messages (e.g., wakeup indicators (WUIs and multi-stage wakeup notifications (WUNs))). The first-stage WUI and first-stage WUN may include minimal information (e.g., a sequence-based signal). Second stage WUIs may include an amount of data buffering for the UE, or an expected amount of time of communications during a next on duration. Second-stage WUNs may include confirmation that the UE 115 will receive the buffered data, or an indication of an amount of time required (e.g., a number of duty cycles or a number of seconds) to have enough energy to communicate. In some examples, the UE 115 may transmit WUNs prior to receiving WUIs. In some examples, the UE 115 may receive a multicast message prior to receiving a WUI.

The invention discloses a secure session method and system for a door lock and a mobile terminal, and the method comprises the steps: periodically collecting the Bluetooth signal strength of the mobile terminal in a coverage area of a unit door lock according to the unit door lock, dividing the signal strength into preset gears, generating a corresponding connection state, packaging the signal strength into an IGMP joining message, and sending the IGMP joining message to a specific multicast address; receiving an IGMP (Internet Group Management Protocol) joining message according to the door lock gateway, and registering or refreshing a unit door lock IP (Internet Protocol), a connection state and a local forwarding interface corresponding to a Bluetooth address in a Bluetooth address binding table maintained by the door lock gateway; constructing a multicast message according to a voice call request initiated by an indoor extension set, forwarding the multicast message through a router network, and binding the table by a rendezvous point RP according to the Bluetooth address; and according to the (S, G) multicast tree, reverse transmission is carried out along the established (S, G) table item path. By utilizing the embodiment of the invention, the quick, accurate and safe direct session establishment between the door lock and the mobile terminal can be realized, and the dependence of communication delay on an external network is reduced.

In summary, various aspects of this disclosure relate to wireless communications. In some aspects, a user equipment (UE) can receive radio resource control (RRC) signaling from a base station indicating the number of padding bits in a multicast downlink control information (DCI). The UE can receive a multicast DCI message from the base station, which includes a set of fields indicating a set of communication parameters. The UE can interpret the multicast DCI message indicating the set of communication parameters based at least in part on the number of padding bits indicated by the RRC signaling. Numerous other aspects are provided.

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.

The invention relates to the technical field of communication, and discloses a multicast message processing method and equipment, which are used for improving the load balancing effect and forwarding performance of a multicast message and considering the internal resource occupation of the equipment. The method comprises the following steps: firstly, dividing a multicast message meeting a first preset condition into a logic frame on an uplink card, marking the multicast message based on a serial number of the logic frame to which the multicast message belongs, forwarding the multicast message marked with the serial number to a corresponding switching network card, and then switching the multicast message with the serial number on the switching network card. According to the number N of downlink line cards contained in a multicast group to which the multicast messages belong, the multicast messages are copied to obtain N parts of multicast messages, the N parts of multicast messages are forwarded to the corresponding downlink line cards, and finally, on the downlink line cards, the multicast messages are reordered according to the sequence of serial numbers of logic frames to which the multicast messages belong. And forwarding the reordered multicast message to a network.

The disclosure provides a multicast switching data transmission method and device, and a storage medium, relates to the technical field of mobile communication, and can be applied to the scene that a source base station and a target base station both receive same multicast messages from a same MB-UPF. The multicast switching data transmission method comprises the following steps: receiving a switching request message sent by the source base station, wherein the switching request message comprises a terminal identifier of a first to-be-switched terminal, an MBS session ID and a multicast caching instruction; in response to the PDU having the MBS session ID, caching a multicast data packet corresponding to the MBS session ID based on the multicast caching instruction; and in response to being connected with the first to-be-switched terminal, sending the multicast data packet to the first to-be-switched terminal. The technical scheme of the embodiment of the disclosure can improve the network resource utilization rate and reduce the probability of data packet loss.

The invention provides a multicast message copying method and device, and is applied to the technical field of communication, and the method comprises the steps: obtaining a current ring head address from a multicast access table entry for a to-be-copied multicast message at this time; using the current ring head address to query a ring multicast chain table to obtain a target table item corresponding to the current ring head address, the table items included in the ring multicast chain table being linked in a ring structure; performing copying operation on the multicast message based on the target table item; if it is identified that the multicast copy task is not completed in the annular multicast linked list, acquiring a next hop address; and updating the value of the current ring head address in the multicast access table entry to the next hop address.

Methods and systems are disclosed for transmitting multicast messages through a network-on-chip device. Compact descriptions of target addressed nodes in the network can be included with each message for efficient routing. Sets of nodes to be excluded from receiving the message for further processing can also be specified and transmitted with each message, adding minimal overhead yet providing for great flexibility in routing processing workloads to appropriate nodes.

The invention relates to the technical field of computers, and discloses a message transmission system and method, computer equipment and a medium, the system comprises at least one message processing device and an interconnection arbitration module; the message processing device is used for identifying the type of a message when the message transmitted by the message receiving port connected with the message processing device is received; when the type of the message is a multicast message, adding the message into an RAM (Random Access Memory) for storage, and latching message copy information in the RAM; copying a preset number of messages according to the message copying information, and determining a destination port number corresponding to a destination port for receiving each message; determining a configuration rule according to the destination port number; the message is modified according to the configuration rule and then sent to the interconnection arbitration module; and the interconnection arbitration module transmits the modified message to a destination port corresponding to the modified message. The strict requirement for rear-end layout and wiring is reduced, the requirement of the PCIe switching device for the number of multiple ports is met, and the expandability of the system is improved.

The application discloses a door lock and card cooperative processing method and system, the method comprises the following steps: triggering a substitute calling robot process according to the preset number of doorbell button operations detected by a first door lock and neighbor RFID card information read, verifying the matching result of the RFID card and the resident registration form, and generating an authority verification pass signal; based on the ID number of the RFID card, calculating a target multicast address, and converting the ID number of the RFID card into a false source IP address to obtain a communication parameter set; according to the communication parameter set, sending an IGMPv3 report message to a router; according to the trigger operation of the same RFID card detected by an assisted second door lock, generating a request assistance multicast message, forwarding to the first door lock through the router matching (S, G) forwarding table item, and sending an assistance confirmation message to the second door lock by the first door lock to complete the robot calling authorization. By using the embodiment of the application, efficient, safe and low-delay cross-door lock cooperative operation can be realized.

The invention provides a multicast message sending method, device and equipment, and the method comprises the steps: obtaining the message length of a multicast message, and determining the target number of storage spaces for storing the multicast message according to the message length and the capacity of each storage space in a target sub-circular linked list in a plurality of sub-circular linked lists included in a circular linked list; the loop chain table comprises a plurality of buffer areas forming a loop chain structure; each buffer area comprises a plurality of storage spaces; a plurality of storage spaces from different buffer areas form a sub-cycle linked list; under the condition that the number of the unoccupied storage spaces in the target sub-cycle linked list is greater than or equal to the target number, storing the multicast message in the unoccupied storage space in the target sub-cycle linked list according to the storage position of the multicast message; and according to a multicast table look-up result corresponding to the multicast message, sending the multicast message stored in the target sub-circular linked list to a target port indicated by the multicast table look-up result.

A multicast packet transmission method and an apparatus are disclosed, and relate to the field of communication technologies. In the method, a first node may send, to a second node, first multicast routing information that includes multicast routing information of the second node and multicast routing information of a third node, and first positioning information that is for determining the multicast routing information of the second node. In this way, after receiving the first multicast routing information and the first positioning information, the second node determines, based on the first positioning information, the multicast routing information of the second node from the first multicast routing information. In this application, the first node does not need to split the first multicast routing information for the second node, to obtain the multicast routing information of the second node. In this way, a quantity of times of splitting and editing a multicast packet is reduced, and multicast packet forwarding efficiency is improved.

The present disclosure relates to a method, in-vehicle terminal device and system for multi-terminal screen sharing in a vehicle. The method is applied to a master terminal device. The master terminal device, slave terminal devices in the vehicle and a domain controller are located in the same local area network. The method includes: after normal startup, starting a User Datagram Protocol (UDP) listening port and a socket service process of the master terminal device; establishing a long connection with a socket service process of the domain controller of the vehicle according to multicast messages listened on by the UDP listening port; rendering on a display interface of the master terminal device according to the vehicle perception and status data received from the socket service process of the domain controller; in response to a request initiated by a slave terminal device in the vehicle to connect to the socket service process of the master terminal device, establishing a long connection with the slave terminal device, and after successful connection, forwarding the vehicle perception and status data to the slave terminal device for independent rendering.

The disclosure relates to methods, devices, and systems for wireless communications. In some wireless communications systems, a base station may transmit a multicast message to a group of user equipment (UEs), and the UEs may provide feedback for the multicast message. In some implementations, the base station may configure the UEs to transmit feedback for multicast messages. In some example, the UEs may transmit group-negative acknowledgment (NACK) feedback information for multicast messages that are not successfully received at the UEs. In some other examples, each UE may be configured with UE-specific uplink control channel resources for transmitting hybrid automatic repeat request (HARQ) feedback for a multicast message. In some implementations, a UE may support feedback for both unicast and multicast messages. The semi-static codebook for unicast, multicast, or both may account for whether the UE is capable of concurrently receiving unicast and multicast messages in a slot.

The invention relates to the technical field of communication messages, and particularly discloses a logic multicast message copying method and system based on linked list and queue scheduling, and the method comprises the following steps: carrying out discarding rule judgment on a received logic multicast message, the logic multicast message being an Ethernet data message needing to be copied and transmitted; and storing the cache address of the logic multicast message judged according to the discarding rule in the form of a linked list, and recording the logic copying times of the message. According to the technical scheme, traditional physical replication is replaced by logic replication, only one original message is stored, the cache address is managed in the form of a linked list, and message admission is accurately controlled in combination with the discarding rule, so that the storage space occupied by the multicast message is greatly reduced, the delay among multiple copied messages is also greatly reduced, and the service life of the multicast message is prolonged. The multiple logic multicast messages are sequentially scheduled to each target user port in the same priority queue.

A system and method are provided for generating group encryption keys for global and private groups to encrypt wireless messages between an access point and a station. The private group key is based on a unique private group identifier. The global group key and the private group key are sent from the access point to the one or more stations via an M3 message, wherein the M3 message is part of a 4-way handshake or a 2-way group key handshake. The global group key is used for encrypted broadcast or multicast messages for the entire group, while the private group key is used for encrypted broadcast or multicast messages for the private group that is a subset of the entire group.

An apparatus comprising: means for receiving, by a handover source access node from one or more handover candidate target access nodes, one or more default radio resource control (RRC) configurations comprising default RRC configuration information for a handover; means for receiving, from multiple UEs, a measurement report comprising information on a radio service quality in association with the handover source access node and / or at least one radio cell provided by the one or more handover candidate target access nodes; means for determining, by the handover source access node, to carry out the handover of the multiple UEs to at least one of the one or more handover candidate target access nodes based on the measurement report, and that the handover is a conditional handover based on service delay requirements and / or service reliability requirements; means for transmitting handover commands to the multiple UEs, wherein each of the handover commands comprises a condition for carrying out the conditional handover and a handover radio network temporary identifier (RNTI) in association with the multiple UEs as a group; and means for transmitting a multi-cast message comprising the default radio resource control configuration information to the multiple UEs using the handover RNTI.