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.

Use of transmission control protocol proxy within packet data service transmissions in a mobile network

Abstract: A method and apparatus for generating a TCP packet connection (160) between a remote host (40) on a first network (Internet/Intranet) and a mobile station (30) on a mobile network is disclosed. The process initially involves performing a three-way handshake routine (100, 105, 110) between the remote host (40) and a gateway packet mobile switching center (55) of the mobile network to establish the validity of a TCP packet connection request. During the handshake routine transmissions (100, 105, 110) from the remote host (40) are buffered by the gateway packet mobile switching center (55). A second three-way handshake routine (145, 150, 155) is then carried out between the gateway packet mobile switching center (55) and the mobile station (30) using the buffered transmissions to complete a TCP connection (160) between the mobile station (30) and the remote host (40).

Multicasting Unicast Packet/Multiple Classification of a Packet

Abstract: A switch and a method are described herein that are capable of performing the following steps: (a) receiving the unicast packet which is a L3 routed packet at a port in a first Virtual Local Area Network (VLAN); (b) routing the received packet to a loopback port in a second VLAN; (c) receiving the routed packet which is now a L2 multicast packet from the loopback port in the second VLAN; and (d) bridging the routed packet to multiple ports in the second VLAN.

Asynchronous packet switching with common time reference

Abstract: The invention describes a method for transmitting and forwarding packets over a packet switching network. The switches of the network maintain a common time reference, which is obtained either from an external source (such as GPS—Global Positioning System) or is generated and distributed internally. The time intervals are arranged in simple periodicity and complex periodicity (like seconds and minutes of a clock). A packet that arrives to an input port of a switch, is switched to an output port based on specific routing information in the packet header (e.g., IPv4 destination address in the Internet, VCI/VPI labels in ATM). Each switch along a route from a source to a destination forwards packets in periodic time intervals that are predefined using the common time reference. The time interval duration can be longer than the time duration required for transmitting a packet, in which case the exact position of a packet in the time interval is not predetermined.

10-Gb/s optical DPSK packet receiver proof against large power fluctuations

Abstract: Optical differential phase-shift keying direct detection (ODPSK-DD) with balanced receivers has the potential to offer large tolerance to signal-power fluctuations because the threshold voltage for signal regeneration is independent of the input power. This letter demonstrates 10-Gb/s packet reception by employing differential detection with an ODPSK-DD receiving set; packet by packet power fluctuation is 10 dB, and the packet spacing is 3.2 ns.

Method, system, and program for processing data packets in packet buffers

Abstract: Provided are a method, system, and program for processing packets of data. An available packet buffer in memory is allocated to a received packet, wherein the received packet is stored in the allocated packet buffer. A determination is made as to whether a number of available packet buffers is less than a first threshold. A further determination is made as to whether the number of available packet buffers is less than a second threshold if the number of available packet buffers is not less than the first threshold. An operation is initiated to copy the received packet from the allocated packet buffer to a copy buffer if the number of available packet buffers is less than the second threshold.