110 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 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 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.

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.

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 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 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.

The application provides a message statistics method, which comprises the following steps: a first network device receives a first multicast message; the first network device counts the characteristics of the first multicast message in a first time interval to obtain first statistics information; the first network device counts the characteristics of the first multicast message in a second time interval to obtain second statistics information; the first device judges the first statistics information and the second statistics information; when the deviation of the first statistics information and the second statistics information is greater than a first preset threshold, it is determined that the first network device has a transmission fault in the second time interval; when the first network device determines that the deviation of the first statistics information and the second statistics information is less than the first preset threshold, it is determined that the first network device has no transmission fault in the second time interval. The technical scheme provided by the application can improve the efficiency of fault positioning.

A method is provided that comprises receiving, from handover candidate target access node(s), default radio resource control configuration(s) comprising default radio resource control configuration information for a handover. The method comprises receiving, from multiple user equipments (UEs), a measurement report. The method comprises determining to carry out the handover as a conditional handover of the multiple UEs to at least one of the handover candidate target access node(s) based on at least one of the measurement report(s), service delay requirements or service reliability requirements. The method comprises 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 the method comprises transmitting a multi-cast message comprising the default radio resource control configuration information to the multiple UEs using the handover RNTI.

This invention discloses a method and system for collaborative vehicle location using door lock tags. The method includes: sending an IGMP join message carrying a building identifier from a unit door lock, and recording the door lock's interface information and associated tag information in the router's multicast forwarding table; writing its own door lock identifier to a vehicle's Bluetooth tag after the unit door lock detects it, and determining that the vehicle has stopped when this set remains unchanged for several consecutive periods; actively scanning surrounding Bluetooth devices after the vehicle stops, and reporting stopping information including its own identifier and the list to the unit door lock with the strongest signal; and performing interface matching processing on other Bluetooth identifiers in the multicast message carrying an official announcement identifier generated by the received unit door lock to trigger confirmation feedback. Using this invention, accurate collaborative location between vehicle tags and resident door locks can be achieved, improving the accuracy and real-time performance of vehicle parking detection in complex environments.

Methods, systems, and apparatuses for wireless communication are described. Typically, a user equipment (UE) can support unicast downlink signaling and multicast downlink signaling, for example, on a single component carrier (CC). The UE can use a first set of processing resources to receive unicast messages via a first CC during a transmission time interval (TTI). The UE can simultaneously use a second set of processing resources to receive multicast messages via the first CC during the same TTI. The first and second sets of processing resources can be associated with first and second hybrid automatic repeat request (HARQ) soft buffers, first and second CCs, or first and second transmit / receive points (TRPs).

The application provides a method for automatically binding a wired switching device and a wireless broadband channel device, and utilizes a two-layer multicast message to realize information interaction between the wired switching device and each wireless broadband channel device, to complete determination of a wireless service port and a wireless management port of the wired switching device, to complete mapping of the wireless service port and the corresponding wireless broadband channel device, and to complete automatic binding of a legal mapping relationship. The application completes the above three steps by sending and receiving responses of the two-layer multicast message, guarantees stability, accuracy and high efficiency of the automatic binding, takes ID information of the wireless broadband channel device as a basis for judging legality and verifying identity, and further guarantees correctness. The application can efficiently complete automatic binding of the wired switching device and each wireless broadband channel device under the premise of stability and accuracy.

The embodiment of the invention discloses a message transmission method, related equipment and a system, which are applied to the technical field of network communication and are used for realizing an RDMA multicast function and improving single-point-to-multipoint transmission performance. In the application, a first network device receives a first message from a first computing device, the first computing device is connected with the first network device, the first computing device is a multicast source in a multicast group, and the first message carries first identification information; the first network device sends a second message to a second network device according to the first identification information, the second message is obtained by the first network device replacing the first identification information in the first message with second identification information, and the second identification information is used for indicating that the second message is a multicast message. And the first network equipment changes the first message into the second message for multicast according to the first identification information, so that the multicast function is realized. The first computing device does not need to copy multiple messages, so that the single-point-to-multipoint transmission efficiency is improved.

The invention relates to the field of edge computing and network communication, and provides a multicast-based AI model distributing and updating method and system aiming at the problems of low model distributing efficiency, untimely updating and poor cross-domain consistency in cross-domain AI model distributing and deploying. Training and reasoning tasks are received and distributed to a core cloud and an edge cloud through a computing network dispatching center; the model file distribution is realized by innovatively applying block multicast and subscription routing modes; the deep coupling of the BIER / IP multicast and the service layer is utilized, so that the overhead of repeatedly processing the multicast message by the application layer is avoided; according to the method, distribution and dynamic updating of the GB-level AI model from the core cloud to the edge cloud can be realized, bandwidth consumption of model distribution can be greatly reduced, minute-level synchronous updating is realized, edge cloud model versions are ensured to be consistent, and the method is suitable for a cross-regional computing power collaborative scene in a large computing power project.

This invention provides a VLAN multicast-based system and method for synchronous projection of left and right vehicle lights, relating to the fields of automotive intelligent lighting and in-vehicle communication technology. The system includes a video source, an in-vehicle Ethernet switching device, left / right area controllers, and left / right high-definition vehicle light controllers. The video source generates a single UDP multicast message containing left and right vehicle light pattern data and sends it to a preset multicast address. The in-vehicle Ethernet switching device performs hardware-level replication and forwarding of the message within an independent lighting service VLAN, enabling the left and right high-definition vehicle light controllers to receive the same message instance. Both controllers parse and extract the corresponding light pattern data and synchronously complete the light pattern refresh. This invention eliminates the time difference at the sending end of traditional UDP unicast, reduces network latency jitter through VLAN isolation, and eliminates the need for additional synchronization harnesses, time synchronization protocols, or CAN trigger signals. This limits the refresh time difference between the left and right vehicle lights to within one display cycle, achieving visually error-free synchronization.

The application provides a data processing method and device and electronic equipment. The method is applied to a target gateway, which is any gateway in a preset multicast group. The method comprises the following steps: in the case that a first current state of a first device is acquired, determining a first record item indicating the first device in a local record set, updating first record content associated with the first record item based on the first current state, and marking the first record item with a first record state; sending a first multicast message indicating the first current state to at least one same-group gateway, so that the at least one same-group gateway respectively updates the device state based on the first multicast message, and the at least one same-group gateway is composed of remaining gateways in the preset multicast group except the target gateway; and in the case that a message response returned by each of the at least one same-group gateway is received, marking the first record item with a second record state. The application provides a more efficient and accurate device state synchronization scheme.

The invention discloses a multicast message forwarding method and system for an AI supercomputing node interconnection switching chip, and the method comprises the steps: carrying out the logic grouping of all interfaces of a crossbar switch matrix switch under the condition that the forwarding of other data between different interfaces is not affected, and enabling each interface group to only have one effective interface, when an inlet and an outlet of the crossbar switch matrix switch process online computing requests in parallel, the number of times that the online computing requests are copied in a multicast mode at the inlet and the number of times that the online computing requests are copied in a multicast mode at the outlet are both the same as the number of interface groups. In a multicast service scene in which a GPU computing unit initiates an on-network computing request through a Crossbar crossbar matrix, a blocking point is generated in a forwarding process of a multicast message due to expansion of a multicast replication bandwidth.

The invention provides an Ethernet network card drive multicast-to-unicast realization method, which relates to the field of avionics system airborne networks, and comprises the following steps: configuring a multicast table, obtaining multicast configuration information input by a user, and querying and updating the multicast table according to the multicast configuration information; analyzing the received Ethernet message, acquiring communication address information, judging whether the Ethernet message is a multicast message or not, if so, querying a multicast table, and if a matched multicast group is queried, for each multicast member in the multicast group, sending the multicast message to the multicast table; and modifying the destination multicast group address information of the multicast message into the local unicast address information of the multicast member to generate a unicast message, and transmitting the unicast message to an operating system protocol stack. According to the invention, compatibility of an airborne system Ethernet and a traditional network in application and use modes is realized, smooth transition from the traditional network to the Ethernet is better realized, and the portability of network application is effectively improved.

The invention provides a card-free hotel door lock processing method and system and a storage medium. A second user door card RFID is read through a first user room door lock according to a triggered card-free mode, and a door lock verification subscription multicast message is sent to a multicast router; the multicast router verifies and subscribes the multicast message according to the door lock and establishes a multicast forwarding table item; the second user room door lock sends a door lock no-card verification multicast message to a preset multicast group address according to the no-card assistance verification message; and the multicast router analyzes the multicast group address and the RFID field according to the door lock no-card verification multicast message, matches the multicast forwarding table entry, and executes opening of the first user room door lock. Compared with the prior art, the method has the advantages that verification is assisted by a third-party user, cross-door-lock distributed verification is achieved through a multicast communication mechanism, unlocking is completed through dynamic face recognition and RFID information matching, participation of a management platform is not needed, and the service pressure of the management platform is reduced.