22 results about "Packet switch" patented technology

The invention relates to an optical data network (10-1) for connecting a plurality of data network nodes (N1-1, N2-1, N3-1, N4-1). The optical data network (10-1) comprises: i) the plurality of data network nodes (N1-1, N2-1, N3-1, N4-1), the data (99) comprising data packets (99p), wherein each data network node (N1-1, N2-1, N3-1, N4-1) is provided with a network interface (Nl); and ii) a data connection network (100-1) comprising at least one data switch (SW) and a plurality of optical connections (50) for allowing establishment of data links (DL1, DL2) between pairs of said plurality of data network nodes (N1-1, N2-1, N3-1, N4-1). At least one of the at least one data switch (SW) is a smart data switch (SSW) comprising at least one packet switch (PS, EPS) and at least one circuit switch (CS, OCS), At least two network interfaces are smart network interfaces (SN, SNC) comprising a data classifier (25) configured for classifying the data packets (99p) into at least two traffic classes including first traffic class (D1) and a second traffic class (D2) in accordance with a classification scheme. The smart data switch (SSW) and the network interfaces (SN, SNC) are configured to route the data packets (99p) of the first traffic class (D1) to the packet switch (PS, EPS) and to route the data packets (99p) of the second traffic class (D2) to the circuit switch (CS, OCS).

The invention discloses a crossbar switch control method based on cache information exchange, which relates to the technical field of integrated circuits and high-speed interconnection, and comprises an outlet flow control waterline register, an outlet congestion waterline register and a dequeue strategy optimization control register of an inlet receiving module in initialization configuration center control; the cache occupation amount of each outlet is monitored in real time, when the outlet cache is in an early warning state, an inlet dequeue strategy is controlled, and outlet data messages in a non-early warning state are scheduled preferentially; the cache occupation and release information is interacted in real time, and the early warning state is updated through the change of an occupation amount register; and dynamically optimizing an entrance dequeue sequence based on an exit cache early warning state, and performing decentralized flow cooperative control. The problem of performance loss of a traditional Crossbar switching chip caused by outlet bottleneck is effectively solved, and a high-performance and high-reliability switching chip technical scheme is provided for the fields of data center lossless interconnection, 5G core network packet switching and the like.

Various embodiments of the present disclosure relate to handling traffic in a split DMA controller having primary DMA channel circuits coupled to a first device, secondary DMA channel circuits coupled to second devices, a packet switch coupled to the primary and secondary DMA channel circuits, and a state machine coupled to the packet switch. In one example embodiment, a technique for pairing a primary DMA channel circuit to a secondary DMA channel circuit via the state machine is provided. The technique first includes receiving a request to transmit data via a primary DMA channel circuit to a device associated with a secondary DMA channel circuit. Next, the technique includes pairing the primary DMA channel circuit with the secondary DMA channel circuit. Finally, the technique includes instructing the primary DMA channel circuit to transmit the data to the secondary DMA channel circuit via the packet switch.

Various embodiments of the present disclosure relate to handling traffic in a split DMA controller having primary channel circuits, secondary channel circuits, a packet switch, and a state machine. In one example embodiment, a technique for routing data via the state machine is provided. The technique first includes receiving a request to transmit data via a primary channel circuit to a device associated with a secondary channel circuit. Next, the technique includes determining that the secondary channel circuit is available and responsively pairing the primary channel circuit with the secondary channel circuit. The technique then includes enabling a virtual channel that is associated with the device and the secondary channel circuit. Finally, the technique includes instructing the primary channel circuit to transmit the data via the packet switch to the secondary channel circuit and causing the secondary channel circuit to write the data to the device using the virtual channel.

The invention discloses a photoelectric fusion switching system, which is applied to the technical field of optical communication, aims to solve the problem of poor expansibility of the system, and is characterized in that different wavelength signals in received service information are transmitted to a first target unit through corresponding transmission links by each first line wave combining and separating unit; a multiplexing wavelength signal transmitted by the user wave combining and separating unit is transmitted to a corresponding line optical fiber; the user wave combining and dividing unit demultiplexes received local up-down service wavelength signals into first single-wavelength signals and sends the first single-wavelength signals to the corresponding target client through the packet switching unit; or the packet switching unit takes the first single-wavelength signal as a second single-wavelength signal and sends the second single-wavelength signal to the corresponding user wave combining and separating unit so as to realize the adjustment of the light direction; the packet switching unit multiplexes a second single-wavelength signal corresponding to client service information through a corresponding user wave combining and separating unit and then transmits the multiplexed signal to a corresponding first line wave combining and separating unit to realize client light direction selection; and the expansibility can be improved.

The application provides a network connection method and an electronic device, and relates to the technical field of electronic devices.The method comprises the following steps: in the case that a first event is identified by the electronic device, the electronic device disconnects a packet switching domain of the electronic device, and reconnects the packet switching domain after the packet switching domain is disconnected, the first event comprising a data packet initiated by an application layer and intercepted by a transport layer in the electronic device; after the electronic device reconnects the packet switching domain, the electronic device identifies a second event, the second event comprising a data packet initiated by the application layer and not intercepted by the transport layer.The present scheme can automatically detect network problems and timely perform corresponding processing, thereby improving the efficiency of network anomaly recovery and improving the online experience.

Various embodiments of the present disclosure relate to handling network traffic in a packet switch having a first, second, and third port, and a switch fabric coupled to the ports. In one example embodiment a technique for routing a data packet destined for at least a recipient coupled to the first port is provided. The technique includes receiving a data packet at the second port and transmitting the data packet to the switch fabric. Next, the technique includes routing the data packet from the switch fabric to the third port. Then, the technique includes transmitting the data packet from the third port back to the switch fabric with an indication to route the data packet to the first port. Finally, the technique includes routing the data packet from the switch fabric directly to the first port and transmitting the data packet from the first port to the recipient.

Various embodiments of the present disclosure relate to handling traffic in a split DMA controller having primary channel circuits (102, 103, and 104), secondary channel circuits (111), a packet switch (106), and a state machine (105). In one example embodiment, a technique for routing data via the state machine (105) is provided. The technique first includes receiving a request to transmit data via a primary channel circuit (102, 103, or 104) to a device (114, 115, or 116) associated with a secondary channel circuit (111). Next, the technique includes determining that the secondary channel circuit (111) is available and responsively pairing the primary channel circuit (102, 103, or 104) with the secondary channel circuit (111). The technique then includes enabling a virtual channel (108, 109, or 110) that is associated with the device (114, 115, or 116) and the secondary channel circuit (111). Finally, the technique includes instructing the primary channel circuit (102, 103, or 104) to transmit the data via the packet switch (106) to the secondary channel circuit (111) and causing the secondary channel circuit (111) to write the data to the device (114, 115, or 116) using the virtual channel (108, 109, or 110).

The utility model relates to a grouping switching dynamic reactive power compensation device, which comprises a reactor, a circuit breaker, a plurality of isolating switches and a plurality of power units, one end of the reactor is connected with one end of the circuit breaker, the other end of the circuit breaker is connected with one end of the first isolation switch, and the other end of the first isolation switch is connected with a power grid; each power unit passes through an isolating switch and then is connected in parallel with the other end of the reactor; according to the utility model, the occupied space can be effectively saved, the equipment cost is reduced, the power failure time and economic loss caused by faults are reduced, and the energy utilization efficiency can be improved.

This invention discloses a method and apparatus for transparent transmission of flexible Ethernet instance data, relating to the field of optical communication technology. The method includes: a transmitting end slicing a flexible Ethernet instance data stream into multiple slice packets according to an integer multiple of a preset data block unit; obtaining time interval information between adjacent slice packets, writing the time interval information into the overhead field of the corresponding slice packet, and sending the slice packet to a receiving end; the receiving end receiving the slice packet, writing the slice packet into a receive buffer, and parsing the time interval information from the overhead field of the slice packet; controlling the rate of reading data from the receive buffer based on the time interval information to restore the service rate of the flexible Ethernet instance data stream, removing the overhead information from the read data, and reassembling the remaining payload data into a continuous flexible Ethernet instance data stream. This application can transparently transmit data streams through a packet-switched system without destroying the data structure or adjusting the rate by adding or deleting idle frames.

It is disclosed a method for transmitting through a packet-switched communication network a measurement result available at a network node. The node applies to packets to be transmitted a marking value, which is switchable between two alternative marking values. The node performs a first switching of the marking value, then waits a wait time whose duration is equal to a value indicative of the measurement result available at the node itself, and then performs a second switching of the marking value. The value indicative of the measurement result is calculated by multiplying the measurement result by a scaling factor inversely proportional to the packet transmission rate of the node. A probe placed on the path of the marked packets detects the first and second switching in the packets, and obtains a reading of the measurement result available at the node as the time lapsing between them, divided by the scaling factor.

It is disclosed a performance measurement application for a user communication device. The device runs at least one user application which exchanges at least one packet flow with a packet-switched communication network. When executed, the performance measurement application receives from an owner of the user communication device a request for performing a performance measurement. In response to such request, the performance measurement application activates a marking functionality comprising marking upstream packets of the packet flow to be measured and inducing the network node originating the downstream packets of the packet flow to be measured to mark them. The performance measurement application then provides performance parameter(s) relating to the marked upstream packets as transmitted and / or the marked downstream packets as received and, based on such parameter(s), provides a performance measurement. The measurement results are then shared with a measurement management server.

Embodiments herein describe techniques to extend a network-on-chip (NoC) across multiple IC dies in 3D. An integrated circuit (IC) device includes a vertically stacked first IC die and a vertically stacked second IC die, and an inter-die bus interfacing between the second die and a NoC packet switch (NFS) of the first die. The inter-die bus may include one or more driver circuits coupled to an inter-die link of the inter-die bus. Communication over the inter-die link may be synchronized (e.g., packet-based) or asynchronous (e.g., based on a peer-to-peer protocol, such as an AXI protocol) with the NFS. The inter-die bus may interface with the circuit block of the second IC device via a point-to-point (e.g., AXI) protocol or via the NFS of the second IC die. In some embodiments, an IC device may include a plurality of inter-die buses that may extend inter-die and intra-die routing options.

The invention belongs to the technical field of communication in a power system network, and provides a dual-mode routing scheduling method and device for the power system network. The dual-mode routing scheduling method for the power system network comprises the following steps: forming a radio frequency link and a power line communication link according to a plurality of available nodes in a voice switching channel and a packet switching channel of the power system network; respectively selecting a plurality of nodes in the radio frequency link and the power line communication link to construct a plurality of node adjacent matrixes; wherein nodes in the node adjacent matrix are adjacent and connected; and selecting a plurality of node adjacent matrixes to form a communication network according to the communication service type and a pre-constructed target function so as to execute the communication service. The invention provides a communication network with high return rate, low time delay and high reliability.

Aspects of the disclosure relate to self-synchronization of information data. According to one aspect, an apparatus includes a receive physical (RX PHY) layer interface configured to communicate information data to a packet switch configured to suspend transmission of the information data prior to arrival of a transaction initiation (SOT) field and start transmission of the information data upon arrival of the SOT field. The apparatus further includes a camera serial interface decoder (CSID) configured to receive the information data from the packet switch, and a camera serial interface decoder (CSID) configured to receive the information data from the packet switch. A frame switch configured to receive a start of frame (SOF) field from the CSID; an image signal processor (ISP) configured to receive the decoded information data from the frame switch, and process the decoded information data to generate processed information data in a format compatible with the image display device; and a software module configured to enable the frame switch and the packet switch.

Methods and apparatus are provided to handle PS Data off for Location services provided over User plane connection (i.e., provided as a PS service) of packet data connection at the UE and location management function. The method performed by the UE comprises receiving from a network node (location management function), a request to setup User Plane (UP) connection for UP Protocol for location services (LCS-UPP) with LCS-UPP being a packet switched service and sending in response to the request a failure message comprising a failure cause when a Packet Switched (PS) Data off status in the wireless device is activated, wherein the PS Data off status activated indicates that transmission of data packets is prevented.

Methods and systems are disclosed for providing performance measurements in a packet-switched communication network, in which a performance measurement application run by a user communication device monitors performance of a packet flow exchanged by a user application run by the user communication device with the packet-switched communication network. Such monitoring includes providing values of performance parameters related to the packet flow. If a fault condition affecting the packet flow is detected based on the values of the performance parameters provided by the performance measurement application, further monitoring of the performance of the packet flow is activated by one or more measurement points located within the packet-switched communication network on a path of the packet flow. Such further monitoring includes providing values of further performance parameters related to the packet flow.

A packet switch includes: multiple ports, wherein the multiple ports include an input port, multiple intermediate ports, and an output port, and a packet is received via the input port; multiple enqueue modules, arranged to forward the packet to at least one of the multiple intermediate ports and the output port according to a through-port (T-port) table and a T-port index, wherein the packet carries the T-port index, and the multiple enqueue modules correspond to the input port and the multiple intermediate ports, respectively.

The invention relates to the technical field of packet switching, in particular to a software-defined industrial switch system based on a multi-core processor, which comprises a control mapping module, a core group configuration module, a path adjustment module, a channel scheduling module and a frequency control cutting module. According to the method, quantitative identification of task depth and execution complexity is realized through hierarchical tagging processing of a control task path structure, and a multi-class mapping relation between tasks and cores is constructed in combination with performance characteristics of a multi-core processor, so that the resource matching accuracy and scheduling flexibility are improved; based on a task execution state, access and interruption characteristics are extracted, path offset behaviors are dynamically identified, real-time kernel redistribution is completed, the continuity and scheduling balance of a task execution process are guaranteed, a priority and channel state mapping mechanism is introduced in the aspect of communication path selection, linkage constraint and cutting optimization of processor frequency and resource distribution are realized, and the task execution efficiency is improved. And the adaptability of the system to complex working conditions and the communication load management capability are enhanced.

In one embodiment, the quasi-output-queue behavior of a packet switch is implemented using virtual output queue (VOQ) ordering determined independently for each particular output queue (OQ), including using maintained latency information for the VOQs of a particular OQ. In one embodiment, all packets from all VOQs with the same port priority destination experience similar latency within a particular time window, similar to the packet service provided by an output-queue switch fabric. In one embodiment, all input ports sending traffic to the same output port priority receive bandwidth proportional to their bandwidth demand divided by the total bandwidth. Existing methods to simulate the performance of an OQ switch fabric require complex and time-consuming scheduling determinations, and do not scale. Independently determining the order in which to send packets from the VOQs associated with each particular OQ provides quasi-output-queue behavior to a system that is scalable and implementable.

The invention relates to an optical data network (10-1) for connecting a plurality of data network nodes (N1-1, N2-1, N3-1, N4-1) The optical data network (10-1) comprises: i) the plurality of data network nodes (N1-1, N2-1, N3-1, N4-1), the data (99) comprising data packets (99p), wherein each data network node (N1-1, N2-1, N3-1, N4-1) is provided with a network interface (NI); and ii) a data connection network (100-1) comprising at least one data switch (SW) and a plurality of optical connections (50) for allowing establishment of data links (DL1, DL2) between pairs of said plurality of data network nodes (N1-1, N2-1, N3-1, N4-1). At least one of the at least one data switch (SW) is a smart data switch (SSW) comprising at least one packet switch (PS, EPS) and at least one circuit switch (CS, OCS), At least two network interfaces are smart network interfaces (SN, SNC) comprising a data classifier (25) configured for classifying the data packets (99p) into at least two traffic classes including first traffic class (D1) and a second traffic class (D2) in accordance with a classification scheme. The smart data switch (SSW) and the network interfaces (SN, SNC) are configured to route the data packets (99p) of the first traffic class (D1) to the packet switch (PS, EPS) and to route the data packets (99p) of the second traffic class (D2) to the circuit switch (CS, OCS).