Network Global Expectation Model: A Statistical Formalism for Quickly Quantifying Network Needs and Costs

Korotky, S.K.

doi:10.1109/jlt.2004.825756

Cited by 72 publications

(54 citation statements)

References 13 publications

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“…We use this model as a basis for our equipment categorization, updated to reflect recent changes and expected future evolutions. In [7], a so-called "network global expectation model" is presented.…”

Section: Related Workmentioning

confidence: 99%

“… Following the network global expectation model proposed in [7], the hop count H in a uniform network can be approximated by the following equation, with N the total number of nodes in the network and L the number of bidirectional links in the network:…”

Section: Using the Analytical Power Modelmentioning

confidence: 99%

“… The average (lightpath) link length is given directly by the network topology (see Table 6). Again, it could also be estimated; the network global expectation model [7] provides an approximation based on the geographic area A covered by the network α = √A/(√N-1). For an estimated area of the pan-European network of 3000 × 3300 km 2 , this would give α = 653 km, which gives only a 13% difference from the actual value of 753 km.…”

Section: Using the Analytical Power Modelmentioning

confidence: 99%

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Power consumption modeling in optical multilayer networks

et al. 2012

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-The evaluation and reduction of energy consumption of backbone telecommunication networks has been a popular subject of academic research for the last decade. A critical parameter in these studies is the power consumption of the individual network devices. It appears that across different studies, a wide range of power values for similar equipment is used. This is a result of the scattered and limited availability of power values for optical multilayer network equipment. We propose reference power consumption values for Internet protocol/multiprotocol label switching (IP/MPLS), Ethernet, optical transport networking (OTN) and wavelength division multiplexing (WDM) equipment. In addition we present a simplified analytical power consumption model that can be used for large networks where simulation is computationally expensive or unfeasible. For illustration and evaluation purpose, we apply both calculation approaches to a case study, which includes an optical bypass scenario. Our results show that the analytical model approximates the simulation result to over 90% or higher, and that optical bypass potentially can save up to 50% of power over a non-bypass scenario.

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Section: Related Workmentioning

confidence: 99%

Section: Using the Analytical Power Modelmentioning

confidence: 99%

Section: Using the Analytical Power Modelmentioning

confidence: 99%

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Power consumption modeling in optical multilayer networks

et al. 2012

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“…The heuristic proposed in [18] was used here because it has been shown to achieve near-optimal results in a wide range of topologies. For the case of rings, the maximum and average wavelength requirement per link using this heuristic is given by and , respectively (where is the number of nodes) [18], [19]. These expressions are obtained assuming that one lightpath is required between every pair of nodes and that the network is equipped with one bidirectional fiber link between adjacent nodes and transmitters and receivers per node.…”

Section: A Static Wron Ringmentioning

confidence: 99%

Next-Generation 100-Gigabit Metro Ethernet (100 GbME) Using Multiwavelength Optical Rings

Zapata

Duser

Spencer

et al. 2004

J. Lightwave Technol.

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Abstract-This paper investigates the challenges for developing the current local area network (LAN)-based Ethernet protocol into a technology for future network architectures that is capable of satisfying dynamic traffic demands with hard service guarantees using high-bit-rate channels (80. . .100 Gb/s). The objective is to combine high-speed optical transmission and physical interfaces (PHY) with a medium access control (MAC) protocol, designed to meet the service guarantees in future metropolitan-area networks (MANs). Ethernet is an ideal candidate for the extension into the MAN as it allows seamless compatibility with the majority of existing LANs. The proposed extension of the MAC protocol focuses on backward compatibility as well as on the exploitation of the wavelength domain for routing of variable traffic demands. The high bit rates envisaged will easily exhaust the capacity of a single optical fiber in the band and will require network algorithms optimizing the reuse of wavelength resources. To investigate this, four different static and dynamic optical architectures were studied that potentially offer advantages over current link-based designs. Both analytical and numerical modeling techniques were applied to quantify and compare the network performance for all architectures in terms of achievable throughput, delay, and the number of required wavelengths and to investigate the impact of nonuniform traffic demands. The results show that significant resource savings can be achieved by using end-to-end dynamic lightpath allocation, but at the expense of high delay. IndexTerms-Dynamic optical networks, Ethernet, metropolitan-area networks (MANs), optical burst switching (OBS), ring networks, wavelength-routed optical networks. Manuscript

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“…Nowadays, transport networks already benefit from optical switching, thereby alleviating the use of expensive and power consuming OE and EO converters and electrical switching equipment operating at increasingly higher bit rates (Korotky, 2004). The main ingredients to support optical switching are the utilization of reconfigurable nodes, like Reconfigurable Optical Add/Drop Multiplexers (ROADMs) and Optical Cross-Connects (OXCs), along with a control plane, such as the Generalized Multi-Protocol Label Switching (GMPLS), (IETF, 2002), and the Automatically Switched Optical Network (ASON), (ITU-T, 2006).…”

Section: Introductionmentioning

confidence: 99%