Proceedings Article10.1109/ICC.2004.1312804
OBS networks using optical code division multiple access techniques
Koji Kamakura,O. Kabranov,Dimitrios Makrakis,Iwao Sasase +3 more
- 20 Jun 2004
- Vol. 3, pp 1725-1729
9
TL;DR: The use of optical code division multiple access techniques for contention resolution in optical burst switching (OBS) and a service differentiation scheme for QoS support that achieves wider range of differentiated services than the existing offset-time-based scheme.
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Abstract: The use of optical code division multiple access (OCDMA) techniques for contention resolution in optical burst switching (OBS) is proposed. Further a service differentiation scheme is proposed for QoS support. This novel approach achieves wider range of differentiated services than the existing offset-time-based scheme, by assigning prioritized codewords which are embedded in the signature sequence used for OCDMA. Steady-state throughput is obtained and the numerical results show that the proposed scheme provides higher throughput corresponding to the priority class assigned to the burst.
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Citations
Patent
Passive optical network communication system
Masayuki Kashima
- 22 Dec 2008
TL;DR: In this article, a passive optical coupler is used to separate the CDM and TDM components of an upstream signal received from the subscribers' units through the passive-optical coupler.
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Efficient Optical Resource Allocation and QoS Differentiation in Optical Burst Switching Networks Utilizing Hybrid WDM/OCDM
TL;DR: Numerical results reveal that by using hybrid WDM/OCDM technique, the blocking probability of OBS networks is significantly reduced and the probabilities of error and outage are reduced employing intelligent resource allocation.
20
A new proposal to reduce burst contention in optical burst switching networks
A. Agusti-Torra,Cristina Cervello-Pastor +1 more
- 03 Oct 2005
TL;DR: An offset windows scheme is introduced to assure that the lack of resources for a burst transmission is detected as close as possible to the ingress nodes, i.e. at the first core node of the ring that processes a control packet.
11
Employing Code Domain for Contention Resolution in Optical Burst Switched Networks With Detailed Performance Analysis
TL;DR: In this paper, the authors proposed the implementation of spectral-amplitude-coding optical code division multiple access (SAC-OCDMA) as a contention resolution technique in optical burst switched (OBS) networks.
11
Efficiency of OBS networks
Jianan Zhang,Meiqian Wang,Shuo Li,Eric Wong,Moshe Zukerman +4 more
- 02 Jul 2012
TL;DR: There is no evidence that the efficiency of OBS in case of large number of links per trunk is significantly lower than that of circuit switching equivalent alternatives, if the target blocking probability is low.
3
References
•Journal Article
Optical burst switching (OBS) - a new paradigm for an optical Internet
Chunming Qiao,Myungsik Yoo +1 more
TL;DR: The general concept of OBS protocols and in particular, those based on Just-Enough-Time (JET), is described, along with the applicability ofOBS protocols to IP over WDM, and the performance of JET-based OBS Protocols is evaluated.
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Code division multiple-access techniques in optical fiber networks. I. Fundamental principles
TL;DR: An examination is made of fiber-optic code-division multiple-access (FO-CDMA), a technique in which low information data rates are mapped into very-high-rate address codes (signature sequences) for the purpose of achieving random, asynchronous communications free of network control, among many users.
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•Proceedings Article
Optical orthogonal codes: design, analysis, and applications
Fan Chung,Jawad A. Salehi,V. K. Wei +2 more
- 01 Jan 1989
TL;DR: In this article, the authors derived upper and lower bounds on the maximum possible size of an optical orthogonal code (OOC) using tools from projective geometry, the greedy algorithm, iterative constructions, algebraic coding theory, block design, and various other combinational disciplines.
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QoS performance of optical burst switching in IP-over-WDM networks
TL;DR: It is shown that with limited FDLs, the offset-time-based QoS scheme can be very efficient in supporting basic QoS, and suitable for the next generation optical Internet.
601
Just-in-time signaling for WDM optical burst switching networks
J.Y. Wei,R.I. McFarland +1 more
TL;DR: The architecture, design, and implementation of a novel just-in-time (JIT) signaling protocol for optical burst switching (OBS) in wavelength division multiplexed (WDM) optical networks and the Washington, DC Testbed network is described.
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