Spectral idleness minimization in the elastic single link under incremental traffic

The paper addresses the problem of minimizing total slot idle time in assigning spectrum to an incremental 2-class traffic. Deadlock avoidance is first shown to be possible in many instances from knowledge of the connection sizes, thus keeping total idleness finite. Then, minimization of the finite residual idleness is shown to be possible with appropriate traffic-aware assignment policies.IEEE Latin-American Conference on Communication

Diffserv Implementation By A Balking Mechanism In Delay-line Buffering

In this paper we address the problem of providing delay-line buffers with the capability to differentiate services in optical packet switching networks. A simple and efficient policy for acceptance and discarding of optical packets is proposed and its analytical model is presented. The model enables the exact calculation of packet loss probability and average delay for Poisson arrivals and any packet length distribution. The buffer performance as predicted by the model is compared with simulations for Pareto packet length distribution.526842688Xiao, X., Ni, L.M., Internet QoS: A big picture (1999) IEEE Network, 13, pp. 8-18. , MarYoo, M., Qiao, C., Dixit, S., QoS performance of optical burst switching in IP-over-WDM networks (2000) EEE J. Select. Areas Commun., Special Issue on Protocols for the Next Generation Optical Internet, 18, pp. 2062-2071. , OctHunter, D.K., Chia, M.C., Andonovic, I., Buffering in optical packet switches (1998) J. Lightwave Technol., 16, pp. 2081-2094. , DecXu, L., Perros, H.G., Rouskas, G., Techniques for optical packet switching and optical burst switching (2001) IEEE Commun. Mag., 39, pp. 136-142. , JanCallegati, F., Corazza, G., Raffaelli, C., Exploitation of DWDM for optical packet switching with quality of service guarantees (2002) IEEE J. Select. Areas Commun., 20, pp. 190-201. , JanCallegati, F., Optical buffers for variable length packets (2000) IEEE Commun. Lett., 4, pp. 292-294. , SeptWaldman, H., Almeida Jr., R.C., Pelegrini, J.U., An infinite granularity bound on the performance of delay-line buffering (2003) Proc. of the 7th IFIP Optical Network Desing and Modelling Conference (ONDM'03), pp. 1187-1200. , Budapest, Hungary, FebTancěvski, L., Ge, A., Castañón, G., Tamil, L., A new scheduling algorithm for asynchronous, variable length IP traffic incorporating void filling (1999) Proc. of Optical Fiber Communications Conference (OFC'99), pp. 180-182. , San Diego, USA, FebTancěvski, L., Yegnanarayanan, S., Castañón, G., Tamil, L., Masetti, F., McDermott, T., Optical routing of asynchronous, variable length packets (2000) IEEE J. Select. Areas Commun., 18, pp. 2084-2093. , OctGross, D., Harris, C.M., (1998) Fundamentals of Queueing Theory, 3rd Ed., , Wiley-Interscienc

Limited-range Wavelength Conversion Modeling For Asynchronous Optical Packet-switched Networks

Packet contention is a very important issue in optical packet-switched networks. This paper analyzes asynchronous optical packet switches when wavelength conversion is used as contention resolution mechanism. A Wavelength converter can convert one wavelength to another and consequently improve the network performance. In practical systems, a wavelength converter normally presents limited range conversion capability. In this paper we propose a Markov model that enables the calculation of packet blocking probability for asynchronous optical packet switches equipped with single per channel limited-range wavelength converters. The analytical model is based on an infinitely fine input granularity assumption and it is shown to present a good approximation with simulation results. © 2005 IEEE.349353Gross, D., Harris, C.M., Fundamentals of Queueing Theory, , A Wiley-Interscience Publication, 3rd editionXu, L., Perros, H.G., Rouskas, G., Techniques for optical packet switching and optical burst switching (2001) IEEE Communications Magazine, , JanuaryPapadimitriou, G.I., Papazoglou, C., Pomportsis, A.S., Optical switching: Switch fabrics, techniques and architectures (2003) Journal of Lightwave Technology, 21 (2), pp. 384-405. , FebruaryHunter, D.K., Chia, M.C., Andonovic, I., Buffering in optical packet switches (1998) Journal of Lightwave Technology, 16, pp. 2081-2094. , DecemberAlmeida Jr., R.C., Pelegrini, J.U., Waldman, H., Delay-line buffer modeling for asynchronous optical networks (2003) Proceedings of SPIE Opticomm'03, , Dallas, TX, USAOctoberCastañón, G., Design-dimensioning model for transparent WDM packet-switched irregular networks (2002) Journal of Lightwave Technology, 20 (1). , JanuaryFayoumi, A.G., Jayasumanda, A., Sauer, J., Performance of multihop networks using optical buffering and deflection routing (2000) IEEE Conference on Local Computer Networks, , Tampa, FL, USA, NovemberDanielsen, S.L., Mikkelsen, B., Joergensen, C., Durhuus, T., Stubkjaer, K.E., WDM packet switch architectures and analysis of the influence of tunable wavelength converters on the performance (1997) Journal of Lightwave Technology, 15, pp. 219-226. , FebruaryDanielsen, S.L., Joergensen, C., Mikkelsen, B., Stubkjaer, K.E., Analyses of a WDM packet switch with improved performance under bursty traffic conditions due to tunable wavelength converters (1998) Journal of Lightwave Technology, 16 (5), pp. 729-735. , MayZhang, Z., Yang, Y., Performance modeling of bufferless WDM packet switching networks with wavelength conversion (2003) IEEE Globecom, , San Francisco, CA, USA, DecemberShen, G., Bose, S.K., Cheng, T.H., Lu, C., Chai, T.Y., Performance study on a WDM packet switch with limited-range wavelength converters (2001) IEEE Communications Letters, 5 (10). , OctoberEramo, V., Listanti, M., Di Donato, M., Performance evaluation of a bufferless optical packet switch with limited-range wavelength converters (2004) IEEE Photonics Technology Letters, 16 (2). , FebruaryAlmeida Jr., R.C., Pelegrini, J.U., Waldman, H., Deflection Routing and Wavelength Conversion in Asynchronous Optical Packet Networks (2004) XXI Simpósio Brasileiro de Telecomunicações - SBrT'04, Belém, Pará, Brazil, Septembe

Delay-line Buffer Modeling For Asynchronous Optical Networks

In this paper we develop an analytical model for the FIFO delay-line buffer in asynchronous optical networks with any packet length distribution, under the assumption that arrivals are Poissonian. We consider that the incoming traffic is distributed among an infinite number of inputs (Aloha traffic) and show that this consideration represents very suitably a real system. The model enables the exact calculation of packet loss probability and average delay, which makes it a very powerful tool for performance evaluation and planning/dimensioning of networks that use this kind of contention resolution technique. The buffer performance as predicted by the model is compared with simulations and discussed for some packet length distributions.5285381391Hunter, D.K., Chia, M.C., Andonovic, I., Buffering in Optical Packet Switches (1998) Journal on Lightwave Technologies, 16, pp. 2081-2094. , DecemberGambini, P., Transparent Optical Packet Switching: Network architecture and demonstrators in the KEOPS project (1998) IEEE Journal on Selected Areas in Communications, 16 (7), pp. 1245-1259. , Invited paperChlamtac, I., CORD: Contention Resolution by Delay Lines (1996) IEEE Journal on Selected Areas in Communications, 14 (5), pp. 1014-1029Xu, L., Perros, H.G., Rouskas, G., Techniques for Optical Packet Switching and Optical Burst Switching (2001) IEEE Communications Magazine, , JanuaryHansen, P.B., Danielsen, S.L., Stubkjaer, K.E., Optical Packet Switching without Packet Alignment (1998) Proc. of ECOC'98, , Madrid, Spain, SeptemberCallegati, F., Corazza, G., Raffaelli, C., Exploitation of DWDM for Optical Packet Switching with Quality of Service Guarantees (2002) IEEE Journal on Selected Areas in Communications, 20 (1), pp. 190-201. , JanuaryCallegati, F., Optical Buffers for Variable Length Packets (2000) IEEE Communication Letters, 4 (9). , SeptemberTancevski, L., Ge, A., Castanon, G., Tamil, L., A New Scheduling Algorithm for Asynchronous, Variable Length IP Traffic Incorporating Void Filling (1999) Proc. of Optical Fiber Communications Conference - OFC'99, , paper ThM7, San Diego, FebTancevski, L., Yegnanarayanan, S., Castañon, G., Tamil, L., Masetti, F., McDermott, T., Optical Routing of Asynchronous, Variable Length Packets (2000) IEEE Journal on Selected Areas in Communications, 18 (10). , OctoberWaldman, H., Almeida Jr., R.C., Pelegrini, J.U., An Infinite Granularity Bound on the Performance of Delay-Line Buffering (2003) Proceedings of ONDM 2003, the 7th IFIP Working Conference on Optical Network Design & Modelling, pp. 1187-1200. , Budapest, FebruaryCrovella, M.E., Bestavros, A., Self-similarity in World Wide Web Traffic: Evidence and possible causes (1997) IEEE/ACM Trans. Networking, 5 (6), pp. 835-846. , De

A New Analytical Approach For The Estimation Of Blocking Probabilities In Linear All-optical Networks

The paper introduces a new analytical approach for estimating blocking probabilities in linear all-optical networks. The assumptions of the classical Lee approximation are discussed and their effects are evaluated. The paper proposes a better substitute for the independent link assumption. The new assumption takes all active paths, as well as all free links, as independent objects on the network topology. The new model is shown to generate estimates that fit exactly the blocking probabilities obtained through simulations on linear topologies using Poissonian, single-wavelength spatially homogeneous traffic. Finally, the independent wavelength assumption is also evaluated.524782482Lee, C.Y., Analysis of switching networks (1955) Bell Syst. Tech. J., 34, pp. 1287-1315. , NovBarry, R.A., Humblet, P.A., Models of blocking probability in all-optical networks with and without wavelength changers (1996) IEEE J. Select. Areas Comm., 14 (5), pp. 858-867. , JunSubramaniam, S., Azizog̃lu, M., Somani, A.K., All-optical networks with sparse wavelength conversion (1996) IEEE/ACM Trans. Networking, 4, pp. 544-557. , AugHui, J.Y., (1990) Switching and Traffic Theory for Integrated Broadband Networks, , Kluwer Academic PublishersZang, H., Jue, J.P., Mukherjee, B., A review of routing and wavelength assignment approaches for wavelength-routed optical WDM networks (2000) SPIE Optical Networks Magazine, 1 (1), pp. 47-60. , JanWaldman, H., Campelo, D.R., Camelo, R., Dynamic priority strategies for wavelength assignment in WDM rings (2000) Proc. IEEE GLOBECOM'00, pp. 1288-1292. , San Francisco, CA, NovGeary, N., Antonopoulos, A., Mitchell, J., Ultra long haul transmission and reconfigurable OADMs for national-scale optical networks (2003) Proc. ONDM'03, 1, pp. 113-126. , Budapest, Hungary, Fe

Optical Buffer Modelling For Performance Evaluation Considering Any Packet Inter-arrival Time Distribution

In this paper we present an exact analytical model for the FIFO delay-line buffer in an asynchronous network scenario considering that packets arrive to the buffer following any inter-arrival time process. The model enables us to study the impact that different inter-arrival distributions have on the buffer performance and design process. The accuracy of the model is compared with simulations for Deterministic, Uniform, Exponential and Weibull inter-arrival time distributions. Then, the effects of these distributions, input load and delay line spacings on the buffer performance are investigated.317711775Hunter, D.K., Chia, M.C., Andonovic, I., Buffering in optical packet switches (1998) Journal on Lightwave Technologies, 16, pp. 2081-2094. , DecemberCallegati, F., Optical buffers for variable length packets (2000) IEEE Communication Letters, 4 (9), pp. 292-294. , SeptemberLaevens, K., Bruneel, H., Analysis of a single-wavelength optical buffer (2003) IEEE INFOCOM 2003, , AprilAlmeida Jr., R.C., Pelegrini, J.U., Waldman, H., Delay-line buffer modeling for asynchronous optical networks (2003) Proceedings of SPIE Opticomm '03, , Dallas, TX. USAOctoberXu, L., Perros, H.G., Rouskas, G., Techniques for optical packet switching and optical burst switching (2001) IEEE Communications Magazine, , JanuaryCallegati, F., Corazza, G., Raffaelli, C., Exploitation of DWDM for optical packet switching with quality of service guarantees (2002) IEEE Journal on Selected Areas in Communications, 20 (1), pp. 190-201. , JanuaryWaldman, H., Almeida Jr., R.C., Pelegrini, J.U., An infinite granularity bound on the performance of delay-line buffering (2003) ONDM 2003, , Budapest, FebruaryTancěvski, L., Ge, A., Castañóon, G., Tamil, L., A new scheduling algorithm for asynchronous, variable length IP traffic incorporating void filling (1999) Proc. of Optical Fiber Communications Conference - OFC'99, , paper ThM7. San Diego. FebruaryTancěvski, L., Yegnanarayanan, S., Castañón, G., Tamil, L., Masetti, F., McDermott, T., Optical routing of asynchronous, variable length packets (2000) IEEE Journal on Selected Areas in Communications, 18 (10). , Octobe