Topic
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.
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Papers
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29 Jun 2007TL;DR: In this article, the authors propose a method for selectively redirecting a data packet to a port on a switching device which is associated with a corresponding network service, based on whether the data packet is to be flooded from the switching device.
Abstract: A method for selectively redirecting a data packet to a port on a switching device which is associated with a corresponding network service. In one embodiment, the data packet is redirected to an intrusion prevention service (IPS) for security analysis of the data packet. In another embodiment, the switching device performs a data link layer redirecting of the data packet based at least in part on whether the data packet is to be flooded from the switching device.
163 citations
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TL;DR: The performance of frequency-hop transmission in a packet communication network is analyzed and new measures of "local" performance are defined and evaluated for networks of this type, and new concepts that are important in the design of these networks are introduced.
Abstract: The performance of frequency-hop transmission in a packet communication network is analyzed. Satellite multiple-access broadcast channels for packet switching and terrestrial packet radio networks are the primary examples of the type of network considered. An analysis of the effects of multiple-access interference in frequency-hop radio networks is presented. New measures of "local" performance are defined and evaluated for networks of this type, and new concepts that are important in the design of these networks are introduced. In particular, error probabilities and local throughput are evaluated for a frequency-hop radio network which incorporates the standard slotted and unslotted ALOHA channel-access protocols, asynchronous frequency hopping, and Reed-Solomon error-control coding. The performance of frequency-hop multiple access with error-control coding is compared with the performance of conventional ALOHA random access using narrow-band radios.
162 citations
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21 Feb 2001
TL;DR: A group packet encapsulation and compression method is proposed in this article, where packets queued at a node configured in accordance with the present invention are classified, grouped, and encapsulated into a single packet as a function of having another such configured node in their path.
Abstract: A group packet encapsulation and (optionally) compression system and method, including an encapsulation protocol increases packet transmission performance between two gateways or host computers by reducing data-link layer framing overhead, reducing packet routing overhead in gateways, compressing packet headers in the encapsulation packet, and increasing loss-less data compression ratio beyond that otherwise achievable in typical systems. Packets queued at a node configured in accordance with the present invention are classified, grouped, and encapsulated into a single packet as a function of having another such configured node in their path. The nodes exchange encapsulation packets, even though the packets within the encapsulation packet may ultimately have different destinations. Compression within an encapsulation packet may be performed on headers, payloads, or both.
161 citations
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07 Jun 1999TL;DR: In this paper, it was shown that an apparatus in a wireless telecommunications network is provided with Short Message Service via a circuit switched channel unless the apparatus is operating in a packet mode.
Abstract: An apparatus in a wireless telecommunications network is provided with Short Message Service via a circuit switched channel unless the apparatus is operating in a packet mode. If the apparatus is operating in the packet mode, the apparatus is provided with Short Message Service via a packet channel.
161 citations
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02 Nov 2005TL;DR: The Simple Packet Combining (SPaC) error-correction scheme for wireless sensor networks is implemented as a link-layer extension on sensor nodes; it is transparent to upper layer protocols and has low memory and CPU footprints.
Abstract: This paper presents the Simple Packet Combining (SPaC) error-correction scheme for wireless sensor networks. Nodes buffer corrupt packets, and when two or more corrupt versions of a packet have been received, a packet combining procedure attempts to recover the original packet from the corrupt copies. Packet combining exploits the broadcast medium and spatial diversity of a multi-hop wireless network by using packets overheard at any node, in addition to the next-hop destination of the packet itself. Unlike point-to-point forward error correction (FEC), packet combining therefore helps multi-node interactions such as multi-hop routing or broadcasting as well as to hop-by-hop communication. Also, SPaC does not transmit redundant overhead on good links and does not require costly probes to estimate channel conditions.We have implemented SPaC as a link-layer extension on sensor nodes; it is transparent to upper layer protocols and has low memory and CPU footprints. We evaluate performance through a combination of analysis, trace-driven simulation, indoor and outdoor testbed micro-benchmarks, and deployment on a live network. The results show significant performance gains, even when accounting for the energy cost of CPU processing. We also present detailed bit-level link measurements and the design and evaluation of a new preamble detection scheme motivated by these measurements.
157 citations