Fast packet switching

About: Fast packet switching is a research topic. Over the lifetime, 5641 publications have been published within this topic receiving 111603 citations.

Fast-tuning 224-Gb/s intradyne receiver for optical packet networks

Abstract: We demonstrate a digital coherent 224-Gb/s (56-Gbaud PDM-QPSK) packet receiver that selects packets using a fast wavelength-switching local oscillator. A novel three-stage CMA enables blind packet recovery in less than 200 ns.

Traffic management system based on packet switching technology

Abstract: The invention relates to a traffic management system (TMSYS), which comprises a road network (RDN) on a physical layer (PL) and at least a packet switched control network (PSCN) on a traffic control layer (TCL). The vehicle traffic formed on the physical layer (PL) by a plurality of vehicles (C1-Cx) travelling along a plurality of road sections (RDS1-RDSm) of the road network is mapped into a packet traffic constituted by a plurality of packets (CP1-CPx) routed along a plurality of packet routing links. Packet control units (PCU1-PCUn) of the packet switched control network (PSCN) are adapted to control the packets (CP1-CPx) on a respective packet routing link (PRL1-PRLm) in the traffic control layer (TCL) to correspond to or simulate a respective vehicle (C1-Cx) on a corresponding road section on the physical layer (PL). The traffic management system (TMSYS) thus treats each vehicle as a packet and can monitor, control or simulate the traffic on this physical layer (PL) by the packet traffic in the traffic control layer (TCL).

Packet interface and method of packetizing information

Abstract: To obviate inefficient use of bandwidth in a packetised system, such as a broadband ATM domain, the use or amount of header information sent in relation to a channel is restricted by one of two principal mechanisms, as exemplified in FIGS. 3 and 4. First, control information incident to a packet interface (20) is interrogated by a processor (21) to determine (50) packet length requirements. A packet length indicator is then generated (52) for inclusion within a header (44) of a packet. Alternatively, a frame (30) is pre-partitioned (60) into several packets (32-42) having different lengths. An addressed subscriber unit (28) is allocated (64) a particular channel, i.e. at least one particular packet within the frame (30), based on data throughput requirements (62), whereby the location of the packet within the frame inherently identifies the length of the packet. Optionally, the data rate used within that packet may also be identified inherently by the location of the packet within the frame (30).

Monitoring packet flows

Abstract: A method includes receiving on a first switching device a message from a second switching device that indicates to slow packet transmission to the second switching device.

Packet-switched communications network for efficiently switching non-burst signals

Abstract: In a packet-switched communications network, each of a plurality of node stations is responsive to a request for a circuit-switched call from a source user terminal and transmits a control packet and a message packet in succession to the other node stations. The control packet contains a source address, a destination address, a unique address and a time slot number identifying the time slot in which the circuit-switched call is to be carried. The message packet contains the same unique address as that sent with the preceding control packet and a plurality of time slots identified by the time slot numbers containing in various control packets. On receiving a message packet having the same unique address as that sent with a previous control packet, a destination station extracts an information signal from the message packet using the time slot number contained in the previous control packet and supplies the extracted signal to a user terminal identified by the destination address.