摘要:
An input line interface device that is used to accommodate packets from a high-speed line efficiently and to reduce a processing load on a back stage caused by routing control. A packet allotting section divides a variable-length packet, allots divided packets to parallel lines, and outputs the packets. A flow group classifying section classifies the packets into flow groups on each of the parallel lines. A sequence number giving section gives the packets sequence numbers corresponding to or independent of the flow groups. A buffering section stores the packets to which the sequence numbers have been given in a buffer or reads out them from the buffer to exercise sequence control over the packets in the flow groups. A flow separating switch separates the packets according to the flow groups and outputs the packets.
摘要:
The packet switch performs a scheduling process by selecting a unicast packet or a multicast packet to be output from each of N input buffers such that input lines and output lines cannot conflict each other for a unicast packet, and such that the input lines cannot conflict each other for the multicast packet.
摘要:
A scheduling system is capable of causing no deterioration of characteristics even under equal and unequal loads, eliminating the necessity for high-speed repetitive scheduling and complicated arithmetic processes, simplifying its architecture and having its processing speed which does not depend upon a device capability. For attaining this system, an inter-highway pointer is updated to an adjacent line (rightward) when the scheduling for all the lines are finished. If the inter-highway pointer is updated N-times in the same direction (clockwise), the same pointer is updated to an adjacent line in a reverse direction (counterclockwise) in next N-processes of scheduling.
摘要:
To achieve QoS control, drop control and multicast control of a variable-length packet at high speed in small scale hardware, a packet divider divides a variable-length packet into fixed-length packets, and an input buffer section stores the divided fixed-length packets into queues by output lines and by QoS classes. A large number of QoS classes are mapped into only two kinds of classes including a guaranteed bandwidth class for which an assigned bandwidth is guaranteed and a best effort class for which a surplus bandwidth is allocated, thereby to achieve scheduling at the input side by an inter-line scheduler. An output buffer section assembles a variable-length packet from fixed-length packets that have been obtained by switching at a switch section in an output buffer section. A QoS control is performed based on a packet length.
摘要:
A packet switch includes an input buffer memory unit having a logic queue corresponding to an output line, a control module for a first pointer indicating a scheduling start input line, a control module for a second pointer indicating a scheduling start output line of scheduling target outlines, a request management control module for retaining transmission request data about a desired output line, a scheduling processing module for starting a retrieval from within plural pieces of transmission request data from the output line indicated by the second pointer, and selecting an output line that is not ensured by other input lines, a packet buffer memory unit for temporarily storing a plurality of fixed-length packets and sequentially outputting the fixed-length packets, a switch unit for switching the fixed-length packets outputted from the packet buffer memory unit, and an address management unit for segmenting an address of the packet buffer memory unit into fixed-length blocks for a plurality of packets, and managing the address on a block basis. With this construction, the memory address is managed on the block basis, and a memory capacity can be reduced by giving an intra-block individual address per queue when in writing or reading.
摘要:
A network/service control method comprises a step of acquiring, when providing a communication service to a user, a user context defined as knowledge information about the user associated with an environment surrounding the user and a past behavior pattern of the user, a step of acquiring a user profile defined as information about a user's favorite registered previously by the user at arbitrary timing, and a service control step of determining network requirements for providing the communication service on the basis of the user context and the user profile.
摘要:
The present invention provides a mobile communication network system comprising a first mobile communication network having a plurality of routers, a second mobile communication network having a plurality of routers, and a mobile communication terminal. A router located in an end section of a communication area of the first mobile communication network sends an end message indicating that it is located in the end section, to the mobile communication terminal. The terminal initiates communications with a router of the second mobile communication network, whilst the terminal is communicating with the router located in the end section, upon receiving the end message sent by the router located in the end section.
摘要:
A liquid resin composition prepared by mixing an ionic material and/or a chargeable material into a thermosetting or thermoplastic resin is injected into a mold having a predetermined inner shape, and a DC voltage is applied to the liquid resin composition to concentrate the ionic material and/or chargeable material on a desired portion or to distribute the ionic material and/or chargeable material continuously. Thereafter, the resin composition is thermally cured when the resin composition contains the thermosetting resin, or the resin composition is hardened by cooling when the resin composition contains the thermoplastic resin, thereby obtaining a molding having a predetermined shape.
摘要:
A storage unit includes an alarm state/timer table, an alarm state table, an alarm state OR-representation table, an alarm state change OR-representation table, an alarm state latch circuit, and a statistical information memory. A collection unit extracts the identifier and data from a cell that passes through a switching unit. An update unit updates associated data in the storage unit. A readout unit reads the updated data and sends it to a call processing processor. An address generation section selectively generates the address for data needing to be updated. An adjustment section forces the readout unit to wait until a cell slot arrives in which no data is updated.
摘要:
A phase adjustment circuit uses a broad band circuit for processing a plurality of high speed highway data comprising m bit frames. The phase adjustment circuit provides a master frame pulse based on a frame pulse selected from respective frame pulses in the high speed highway and delayed in phase by the maximum amount and provides a master clock based on a high speed highway clock corresponding to the master frame pulse. The phase adjustment circuit receives a plurality of high speed highway data by using the master clock and the master frame pulse.