Results 161 to 170 of about 85,755 (194)

On burst-header contention-resolution in OBS networks

Photonic Network Communications, 2008
Advances in enabling technologies and the explosive growth of Internet traffic has led to the widespread proliferation of network systems in recent years. With their relatively low cost, high throughputs, high-bandwidth utilization, and low-transmission latency, Optical Burst Switching (OBS) networks represent an ideal solution for next-generation ...
Hui-Tang Lin, Wang-Rong Chang, Tse-Sheng Lin   +2 more
openaire   +1 more source

Regenerator Placement Strategies for Translucent OBS Networks

Journal of Lightwave Technology, 2011
Most research works in optical burst switching (OBS) networks do not take into account the impact of physical layer impairments (PLIs) either by considering fully transparent (i.e., with optical 3R regeneration) or opaque (i.e., with electrical 3R regeneration) networks.
Pedrola O., Careglio D., Klinkowski M., Sole-Pareta J.   +3 more
openaire   +1 more source

Traffic Characteristics in OBS Networks

2009
Modeling and analysis of the OBS networks is a challenging task due to the unacknowledged switching used and the lack of optical buffers at the core nodes. Further, due to the aggregation of packets into bursts at the ingress nodes, the characteristics of the IP traffic are changed inside the OBS network.
T. Venkatesh, C. Siva Ram Murthy
openaire   +1 more source

Improving throughput and effective utilization in OBS networks

Optical Switching and Networking, 2015
This paper considers two important performance measures that have not received much attention in performance studies of optical burst switching (OBS) networks. The first is the so-called effective utilization which is the proportion of link capacity used by bursts that eventually reach their destinations.
Shuo Li 0003, Moshe Zukerman, Meiqian Wang, Eric W. M. Wong   +3 more
openaire   +1 more source

Contention Resolution in OBS Networks

2009
OBS networks using the JET/JIT reservation mechanism, which is a one-way and unacknowledged reservation mechanism, provide connectionless switching. Due to this feature, the bursts may contend with one another at the core nodes. Contention among two bursts occurs due to the overlap of two or more bursts (in time) that arrive simultaneously on two ...
T. Venkatesh, C. Siva Ram Murthy
openaire   +1 more source

OBS network model for OMNeT++: a performance evaluation

Proceedings of the 3rd International ICST Conference on Simulation Tools and Techniques, 2012
Optical Burst Switching (OBS) is an optical switching technology capable of supporting large demands for bandwidth in optical backbones with Wavelength Division Multiplexing (WDM). This paper presents an OBS simulation model for the discrete event simulator OMNeT++.
Felix Espina, Javier Armendariz, Naiara García, Daniel Morató, Mikel Izal, Eduardo Magaña   +5 more
openaire   +1 more source

Designing an Optimal Scheduler Buffer in OBS Networks

Journal of Lightwave Technology, 2008
In this paper, we dimension a buffer in which headers are enqueued before processing in an optical burst switching (OBS) network. For the first time, we develop and analyze a unified OBS model comprising a set of homogeneous and independent edge buffers that feed bursts to a standalone link and their headers to a scheduler.
Zalesky, Andrew, Vu, Hai Le
openaire   +2 more sources

A Viable Translucent Architecture for Lossless OBS Networks

2010 IEEE International Conference on Communications, 2010
Optical transmission allows massive data transfers thanks to its tremendous transport capacity. Sustained efforts have been made to address the physical constraints that limit its flexibility, but as for today, translucent architectures involving electrical treatments are still favored.
Thomas Coutelen, Brigitte Jaumard, Gérard Hébuterne   +2 more
openaire   +1 more source

Blocking Probability in OBS Networks

2009
Computing the blocking probability of bursts at the core nodes in an OBS network is important for many reasons. First, it helps to understand the loss process of bursts and provide exact analytical expression for the loss rate of bursts at the core nodes.
T. Venkatesh, C. Siva Ram Murthy
openaire   +1 more source

Retransmission in OBS networks with fiber delay lines

2007 Fourth International Conference on Broadband Communications, Networks and Systems (BROADNETS '07), 2007
While most transmission schemes in OBS networks relegate retransmission to higher protocol layers, the scheme proposed in this paper reduces retransmission delays by exploiting fiber delay lines at the optical layer. We present an analysis of the scheme that focuses not only on individual components but also on the end-to-end properties of the network.
Kyung Joon Kwak, Edward G. Coffman Jr.
openaire   +1 more source