Blocking in All-Optical Networks

Sridharan, Ashwin; Sivarajan, Kumar N.

doi:10.1109/tnet.2004.826251

Cited by 102 publications

(8 citation statements)

References 16 publications

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“…The work presented in (Sridharan and Sivarajan, 2004;Ramesh et al, 2000;Ramamurthy and Mukherjee, 1998;Xiong et al, 2003;Cerutti et al, 2005). The work presented in (Pitchumani et al, 2004;Chen et al, 2001) deals with the classes of connections which are differentiated, by the admission control policies, by their blocking probabilities.…”

Section: Jcsmentioning

confidence: 99%

Reducing Call Blocking Probability in Hybrid Multicast Wavelength Division Multiplexing Networks Using Weighted Routing and Wavelength Assignment Algorithm

Sankar¹

2014

Journal of Computer Science

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In the proposed work, the focus is on increasing the available wavelength in the all-optical networks, for which the Routing and Wavelength Assignment plays a vital role. In the earlier reported work, the wavelengths were assigned to the links which covers a set of destinations but not all the intended destinations. However this proposed work, attempts were made to create multiple spanning tree with minimum cost for reaching all the nodes in the network. Also, the delay (associated with transmission and propagation delay) was considered in the proposed work for demonstrating the Quality of Service. Experimentally the proposed algorithm works by means of constructing Multiple Minimum Spanning Trees (MMST) using Mayeda and Seshu algorithm considering the QoS parameter delay and avoids the call blocking probabilities. For the performance measurement, the parameters such as the cost and delay are considered and depending on the application they can be traded-off. The significance of the work lies in the optimization of the wavelength used in the fibre network, which mainly contributes to the backbone of the Internet. The experiments were conducted for the different scenarios of simulated network configuration and found to produce promising results compared to the existing work.

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Section: Jcsmentioning

confidence: 99%

Reducing Call Blocking Probability in Hybrid Multicast Wavelength Division Multiplexing Networks Using Weighted Routing and Wavelength Assignment Algorithm

Sankar¹

2014

Journal of Computer Science

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“…Sixteen parallel channels already improve the performance considerably. Considering that paths consist of several hops [27,28], 16 channels is sufficient to achieve a burst loss-rate <10 −3 over 8 hops if 30% utilization is the designs load target. For 80% utilization 256 parallel channels are required, efficiently achievable only via fully alight DWDM on 4 parallel fibres and blocking free any-toany wavelength conversion.…”

Section: Resource Utilization and Dbmentioning

confidence: 99%

Burst-Switched Optical Networks Supporting Legacy and Future Service Types

Franzl

Hayat

Holynski

et al. 2011

Journal of Computer Networks and Communications

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Focusing on the principles and the paradigm of OBS an overview addressing expectable performance and application issues is presented. Proposals on OBS were published over a decade and the presented techniques spread into many directions. The paper comprises discussions of several challenges that OBS meets, in order to compile the big picture. The OBS principle is presented unrestricted to individual proposals and trends. Merits are openly discussed, considering basic teletraffic theory and common traffic characterisation. A more generic OBS paradigm than usual is impartially discussed and found capable to overcome shortcomings of recent proposals. In conclusion, an OBS that offers different connection types may support most client demands within a sole optical network layer.

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“…Blocking probability in wavelength-routed optical networks has been studied analytically in a number of previous works. While most previous research (e.g., [11], [13], and [14]) considers only centralized cases, distributed schemes are studied in [15] and [16]. In [15], analytical models are developed to evaluate the blocking probability characteristics of various SIR and DIR schemes.…”

Section: Introductionmentioning

confidence: 99%

Intermediate-node initiated reservation (iir): a new signaling scheme for wavelength-routed networks

Jue

Xiao

et al. 2003

IEEE J. Select. Areas Commun.

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Abstract-A problem of many distributed lightpath provisioning schemes is wavelength contention, which occurs when a connection request attempts to reserve a wavelength channel that is no longer available. This situation results from the lack of updated global link-state information at every node. In networks with highly dynamic traffic loads, wavelength contention may seriously degrade the network performance. To overcome this problem, we propose a new framework for distributed signaling and introduce a class of schemes referred to as intermediate-node initiated reservation. In the new scheme, reservations may be initiated at any set of nodes along the route; in contrast, reservations can only be initiated by the destination node in the classic destination initiated reservation (DIR) scheme. As a result, the possibility of having outdated information due to propagation delay will be significantly lowered. Specifically, we consider two schemes within this framework, for networks with no wavelength conversion and for networks with sparse wavelength conversion, respectively. Theoretical and simulation results show that, compared with the classic DIR scheme, the new schemes can significantly improve the network blocking performance. The accuracy of the analytical models is also confirmed by extensive numerical simulations.Index Terms-Blocking probability, distributed lightpath provisioning, signaling, wavelength-division multiplexing (WDM), wavelength-routed network.

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Blocking in All-Optical Networks

Cited by 102 publications

References 16 publications

Reducing Call Blocking Probability in Hybrid Multicast Wavelength Division Multiplexing Networks Using Weighted Routing and Wavelength Assignment Algorithm

Reducing Call Blocking Probability in Hybrid Multicast Wavelength Division Multiplexing Networks Using Weighted Routing and Wavelength Assignment Algorithm

Burst-Switched Optical Networks Supporting Legacy and Future Service Types

Intermediate-node initiated reservation (iir): a new signaling scheme for wavelength-routed networks

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