194results about "Star/tree networks" patented technology

The invention discloses a downlink message control method of a star topology network and a server for executing the control method. The star topology network comprises a server, a plurality of gateways and a plurality of nodes. The nodes communicate with the server through the gateway, and the server allocates a timer for each of the gateways. The control method comprises the following steps: 1, judging whether a node is newly accessed to the star topology network; if so, entering the step 2; Step 2, establish a node-gateway topology relationship to determine a coverage area of each gateway and a coverage area of each node; 3, allocating one of a plurality of downlink frequency points to a newly access node; 4, requesting the gateway to send the message request when the frequency requiredfor the message request to be sent by the gateway is not used by the gateway in the coverage area of the destination node of the message request. The invention can more efficiently solve the problem of co-frequency interference of downlink communication of star topology network.

A chassis front-end is disclosed. The chassis front-end may include a switchboard including an Ethernet switch, a Baseboard Management Controller, and a mid-plane connector. The chassis front-end may also include a mid-plane including at least one storage device connector and a speed logic to inform at least one storage device of an Ethernet speed of the chassis front-end. The Ethernet speeds may vary.

To provide systems, methods, and devices for improved routing operations in a network computing environment.SOLUTION: An architecture 400 for host routed overlay includes a virtual customer edge router (virtual CE router), a plurality of host virtual machines, and a routed uplink from the virtual customer edge router to one or more of a plurality of leaf nodes L1 to L4. The architecture is such that the virtual customer edge router provides localized integrated routing and bridging (IRB) service for the plurality of host virtual machines of the host routed overlay.SELECTED DRAWING: Figure 4

Apparatus and methods for constructing Network on Chips (NoCs) by algorithmically elaborating one or more of Network on Chips (NoCs) through a hierarchical topology composed of instantiations of sub-NoCs and leaf components, and one or more connectivity definitions. Designing NoCs using one or more instantiations of sub-NoCs reduces overheads during chip backend processes, such as for timing closure.

In the present invention, an optical path-designing device, by using a scheme that has been reinforcement-trained so as to reduce the amount of optical fiber resources used in an optical network having a plurality of nodes connected by optical fibers, selects an optical path demand to which the optical fiber resources are to be allocated, on the basis of frequency allocation state information indicating available frequencies in each of the optical fibers and optical path demand group information indicating a plurality of optical path demands indicated by combinations of start point nodes and end point nodes. The optical path-designing device refers to the frequency allocation state information, and determines a path and a frequency in the optical network to be allocated to the selected optical path demand such that a low or high frequency is given higher priority.

An optical communication device includes a signal multiplexing unit that multiplexes a plurality of client signals and a signal transmission unit that converts a first multiplexed signal obtained by the multiplexing to an optical signal and transmits the optical signal. The optical communication device is a device capable of receiving data traffic greater than data traffic corresponding to a predetermined communication bandwidth.

A communication device according to an embodiment of the present disclosure comprises: a communicator; and a processor configured to: if a network composed of a first topology including a star topology or a line topology is included on a communication path connecting the communication device and the other communication device, configure data to be transmitted to the other communication device through a first interface for accessing a RAPIEnet (Real-time Automation Protocol for Industrial Ethernet)-based upper layer and an Internet Protocol (IP)-based lower layer, and transmit the data to the other communication device through the communicator using the communication path.

The present disclosure relates to the technical field of bus communication, and provides a networking system and method based on IEEE 1394 protocol. The system comprises a central hub, a target hub and a target terminal device. The central hub comprises a plurality of central connection ports, and there is an intercommunication data link between each two of the central connection ports. The target hub comprises a target uplink port, which is connected to one of the central connection ports through a target cable complying with IEEE 1394 technical specification. The target terminal device is connected to one of the target downlink ports of the target hub through a target cable. If a first connection port of the central connection ports receives a data packet sent by the target terminal device, the central hub forwards the data packet to a second connection port of the central connection ports based on a load balancing algorithm. The technical scheme provided by one or more embodiments of the present disclosure can effectively integrate the device resources of multiple hubs.

A communication system includes a connection module, a processing module, and K nodes. The connection module is configured to connect the processing module and the K nodes. The processing module includes L communication units, where each of the L communication units corresponds to one node, the L communication units include a first communication unit, and the K nodes include a first node. The first communication unit is configured to process a packet of the first node that corresponds to the first communication unit.

Methods, systems, and apparatuses are provided for managing and routing data in a multi-tier network architecture. The methods include transmitting a data flow comprising a sequence of data packets to a source leaf switch and determining if an intended route exists in a forwarding table stored at the source leaf switch using routing metadata. If the intended route does not exist, a control packet is transmitted to a centralized coordinator switch, which modifies an allocation table to include an updated route. The forwarding table at the source leaf switch is then updated with the updated route, and the data flow is transmitted to its destination.

A communication system according to the present invention includes a first control device and a second control device. The first control device includes: a first communication device control unit that controls the activation of communication devices and generates state information for the communication devices; a first storage device that stores the state information for the communication devices; and a first activation control unit that determines whether or not the first communication device control unit has failed. The second control device includes: a second communication device control unit; a second storage device; and a second activation control unit in which a circuit for activating the second communication device control unit and the second storage device is held in a non-transitory recording medium. When it is determined that the first communication device control unit has failed, the first activation control unit instructs the second activation control unit in cold standby to activate the second communication device control unit and the second storage device, the second activation control unit activates the second communication device control unit and the second storage device, and the second communication device control unit controls activation of the communication devices on the basis of the state information for the communication devices.

Techniques for operating a network device are provided. In some embodiments, a method may comprise: forwarding multicast data packets from a source in a first customer network to a receiver in a second customer network; detecting that another PE device is forwarding the multicast data packets, wherein: Protocol Independent Multicast (PIM) is enabled on supplemental bridge domain (SBD) logical interfaces of the PE device and the another PE device, the PE device and the another PE device are PIM neighbors, and the PE device and the another PE device communicate with each other and with the receiver using the PIM protocol through an Ethernet virtual private network (EVPN). The method may further comprise: determining the another PE device is an assert winner from among the PE device and the another PE device based on at least one PIM assert message, the another PE device forwarding the multicast data packets.

The present disclosure describes a data center system including an instruction processing device for a chassis including one or more boards, a board including a set of cards, a card including a computing node or a processing device and a controller. The controller can receive an instruction from the instruction processing device through a first communication network between the controller and the instruction processing device. Based on the instruction, the processing device of the card can generate an operation result and provide the operation result to another device of the board through a second communication network different from the first communication network. The second communication network can have a ring topology or other topology. The instruction processing device can further operate a hierarchical manager to create a network manager to manage the operations of the board.

Techniques for combining the functionality of fabric interconnects and switches (e.g., Top-of-Rack (ToR) switches) into one network entity, thereby reducing the number of devices in a fabric and complexity of communications in the fabric. By collapsing FI and ToR switch functionality into one network entity, server traffic may be directly forwarded by the ToR switch and an entire tier is now eliminated from the topology hierarchy which may improve the control, data, and management plane. Further, this disclosure describes techniques for dynamically managing the number of gateway proxies running on one or more computer clusters based on a number of managed switch domains.

Systems, methods, and devices for offloading network data to a datastore. A system includes a publisher device in a network computing environment. The system includes a subscriber device in the network computing environment. The system includes a datastore independent of the publisher device and the subscriber device, the datastore comprising one or more processors in a processing platform configurable to execute instructions stored in non-transitory computer readable storage media. The instructions includes receiving data from the publisher device. The instructions include storing the data across one or more of a plurality of shared storage devices. The instructions include providing the data to the subscriber device.

Communication method between participants (100,11,12,13,14) of a network (101) which has several components (100,11,12,13,14) of a mechatronic system, wherein user data (D11,D12,D13,D14) are communicated between the participants (100,11,12,13,14) via the network (101) by means of telegrams, wherein logical and / or physical communication links (102) exist between participants (100,11,12,13,14) of the network (101) via which the telegrams (103) are transmitted, where user data (D11,D12,D13,D14) of several participants (100,11,12,13,14) are summarized in a summary frame telegram (1-8,1'-8') and the summary frame telegram (1-8,1'-8') is sent to participants (100,11,12,13,14) of the network (101), using a configurable routing structure through which the telegrams (103) are routed, wherein the configurable routing structure contains at least one sub-route (R1) that covers only a part of the participants (100,11,12,13,14) of the network (101), wherein at least one sub-telegram (1,1') is constructed for this sub-route (R1), which as a summary frame sub-telegram (1,1') contains only payload data (D11,D12,D13,D14) from participants (100,11,12,13,14) of this sub-route (R1), where the summary frame sub-telegram (1,1') is routed via this sub-route (R1), where participants (100,11,12,13,14) of the sub-route (R1) can each extract their payload data (D11,D12,D13,D14) from the summary frame sub-telegram (1,1') and / or write their payload data (D11,D12,D13,D14) into the summary frame sub-telegram (1,1'), where a network configuration module (101) automatically determines the configuration of the summary frame sub-telegram (1-8,1'-8') based on the routing structure, wherein at least one subroute (R1-R8) with the configuration of the associated summary frame sub-telegram (1-8,1'-8') is transmitted to the participants (100,11,12,13,14) of the subroute (R1) and is used there for routing and / or extracting and / or writing the payload data (Dnn).

This disclosure describes a ring light guide (114) integrated into a system (102). The system (102) may be a mesh network device, including a light manager application (612) that, when executed by a processor (608), causes the system (102) to determine (702) an operating state and select (704) a color based on the determined operating state. The light manager application (612) then causes the system (102) to activate (706) one or more light-emitting components (112) to emit light corresponding to the selected color, and transmits the emitted light through the ring light guide (114) to provide external light emission (514) below the bottom housing (108) of the system (102).

In an ECU control system 100, a management ECU 30 monitors a memory usage amount of a downstream memory, and before the memory usage amount exceeds an upper limit capacity of the downstream memory, executes data migration for migrating vehicle data stored in the downstream memory from the downstream memory to the management ECU, and a downstream ECU deletes, from the downstream memory, the vehicle data migrated to the management ECU 30.

A method of operating a session management function SMF entity of a wireless communication network may be provided. An Ethernet context for a wireless terminal may be received from a first user plane function UPF entity, wherein the Ethernet context is provided for an Ethernet Protocol Data Unit PDU Session for the wireless terminal using the first UPF entity, and wherein the Ethernet context includes a Medium Access Control MAC address for the wireless terminal. The Ethernet context including the MAC address for the wireless terminal may be transmitted to a second UPF entity. Related methods of operating user plane function UPF entities of a wireless communication network may also be provided.

The invention provides a communication method and device for a GPU cluster, electronic equipment and a medium, and relates to the technical field of artificial intelligence, in particular to the technical field of distributed computing, GPU cluster communication optimization and the like. According to the implementation scheme, the method comprises the steps of obtaining network performance data among a plurality of GPU nodes in a GPU cluster and hardware specification data of each GPU node in the plurality of GPU nodes; generating a hybrid logic communication topology for the plurality of GPU nodes based on the network performance data and the hardware specification data, the hybrid logic communication topology being a combination of at least two of a tree topology, a ring topology and a bus topology; determining a communication protocol adopted by a communication link in the hybrid logic communication topology based on the network performance data; and communicating among the plurality of GPU nodes according to the generated hybrid logic communication topology and communication protocol.

According to an aspect, there is provided a method for determining a sequence of bus nodes (102, 104, 106) in a multi-drop communication bus. The method comprises for each bus node (102, 104, 106): sending (200) a request to the bus node (102, 104, 106) using an bus node physical identifier to set the bus node (102, 104, 106) to a loopback mode; transmitting (202) at least one signal to the bus node via the multi-drop communication bus (108); receiving (204) from the bus node (102, 104, 106) a loopback signal caused by the at least one signal; and measuring (206) a roundtrip delay between the at least one signal and the loopback response signal. The method further comprises solving (208) the physical order of the bus nodes (102, 104, 106) in the multi-drop communication bus (108) based on the roundtrip delays.

An in-vehicle communication system includes communication transmission paths, a first electronic device and second electronic devices each of which is connected directly / indirectly with the first electronic device through the communication transmission path(s), the first electronic device includes an evaluation unit sending a predetermined evaluation signal to the second electronic device(s) as target device(s), receiving a reply signal sent back by the target device in response to the evaluation signal, and evaluating a transmission quality of the communication transmission path(s), each of the second electronic devices includes a first communicator folding back a propagation direction of the evaluated signal received as the target device and sending the evaluated signal as the reply signal to the first electronic device, and the evaluation unit stores an evaluation result about the transmission quality, in association with the second electronic device that is the target device.

To provide a communication device, communication system, program, and communication method that can support both current generation and next generation communications, while maintaining the configuration of a network that converts optical signals into electrical signals, by also incorporating the configuration of an all-optical network.SOLUTION: An access optical node 1 includes an optical signal processing unit 10 that transmits a received optical signal to a destination node 100. The optical signal processing unit 10 has a route switching unit 13 that, based on the wavelength of the received optical signal, switches between a first route R1, which transmits the received optical signal to the destination node 100 as the optical signal is, and a second route R2, which transmits the received optical signal to an electrical signal processing unit 20, and transmits an optical signal after being processed by the electrical signal processing unit 20 to the destination node 100.SELECTED DRAWING: Figure 2

The invention relates to a segmented speed measurement method and system between FTTR main devices, and belongs to the technical field of computers.The method comprises the steps that a network topological graph is obtained in real time, and the network topological graph is of a tree-shaped or star-shaped structure with a main gateway as a root node, network devices as nodes and links as edges; determining the topology type of the network topological graph according to the network topological graph and the topology type logic, and identifying a link pair capable of parallel speed measurement based on the topology type; and under the condition of receiving a speed measurement instruction, according to the network state and the resource state, judging whether to carry out priority grouping on the link pairs capable of carrying out parallel speed measurement, and carrying out parallel speed measurement on the link pairs capable of carrying out parallel speed measurement based on a judgment result. According to the method, on the premise that the speed measurement accuracy is not affected, the speed measurement efficiency is improved, inconvenience caused by speed measurement waiting of a user is reduced, and the user experience and satisfaction degree are improved.

This technology provides the ability to continue in-vehicle communication regardless of the vehicle's power status. [Solution] The communication system 10 that performs in-vehicle communication based on the Ethernet standard comprises a communication bus 11 and a plurality of communication devices that transmit data via the communication bus 11. The plurality of communication devices include communication devices that do not participate in in-vehicle communication depending on the vehicle's power state, and depending on the vehicle's power state, the system takes a state in which the maximum number of participating communication devices communicates. The plurality of communication devices each have a holding unit that holds in advance their own transmission order according to the maximum number of participants, and a communication unit that transmits data when the number of times counted each time a predetermined period of no communication has elapsed reaches its own transmission order.

To provide an OLT and the like that achieve low delay guarantee.SOLUTION: An OLT used in a PON using an optical splitter has a collection unit and a processing unit. The collection unit collects time information of arrival of packets from an ONU and data volume information of the packets. The processing unit determines transmission timing of the ONU on the basis of transmission timing information assigned to the ONU, the time information, and the data volume information.SELECTED DRAWING: Figure 2

Some embodiments relate to a coordinator; a plurality of subscribers, each comprising a button, a memory and a display; and a bus which couples the coordinator to the plurality of subscribers. The coordinator and the plurality of subscribers are configured to be set in an addresses allocation mode. In the addresses allocation mode, the coordinator is configured to indicate a first subscriber number and to broadcast a first broadcast message to the plurality of subscribers. In the addresses allocation mode after activation of a button of a first subscriber of the plurality of subscribers, the first subscriber is configured to be activated and to send an acknowledge message to the coordinator.

The invention discloses a real-time astronomical telescope control command transmission method based on a reflective memory network interruption mechanism. The method comprises the following steps: upgrading a unit subsystem of the TCS system; the method comprises the following steps: arranging reflection memory cards in independent computers of a telescope TCS, an OCS and a GSS to form a CETTN; a command-parameter decoupling storage architecture is designed, and decoupling of dynamic parameters and static execution logic is achieved through CETTN partition mapping; the interrupt priority is configured to be the highest level in the RTX system; when the transmitter writes a command ID to a specified address, the RFM card sends an interrupt request to the slave control machine; an interrupt service program ISR of a receiving end firstly reads the command ID, loads a corresponding parameter template from a pre-storage area, and transmits a parameter pointer to a control thread; and setting a timer under RTX, detecting ISR response time, entering a protection mode if the response time is too long, and abandoning the command and waiting for the next command if the CRC (Cyclic Redundancy Check) is failed.

A vehicle data communication system includes a server-side electronic control unit and a client-side electronic control unit configured to communicate data with each other via a communication path. The server-side electronic control unit includes a server-side communication band setting unit configured to work in conjunction with server-side service discovery. The client-side electronic control unit includes a client-side communication band setting unit configured to work in conjunction with client-side service discovery. The server-side communication band setting unit and the client-side communication band setting unit are configured to dynamically set a predetermined communication band.