Priority Based Routing and Wavelength Assignment With Traffic Grooming for Optical Networks

Chatterjee, Bijoy Chand; Sarma, Nityananda; Sahu, Partha Pratim

doi:10.1364/jocn.4.000480

Cited by 88 publications

(25 citation statements)

References 11 publications

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“…In [6] an integrated routing and grooming scheme for WDM networks based on a hierarchical network model using the concept of blocking islands to abstract network resources and keeping the integrity and load-balance of specific network sections (the above islands) as intact as possible. Also [7] proposes a routing optimization algorithm where connection requests characterized by the same source and destination are groomed and served according to a specific priority order. Another combined RWA/grooming approach implemented according to a two-stage path selection approach and driven by connection blocking minimization criteria is presented in [8], whereas a more sophisticate load-balancing approach based on maximum flow/minimum cut considerations on the network graph is presented in [9].…”

Section: Related Workmentioning

confidence: 99%

A hybrid load-balancing and energy-aware RWA algorithm for telecommunication networks

Ricciardi

Sembroiz-Ausejo

Palmieri

et al. 2016

Computer Communications

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In the last years, the power consumption of telecommunication networks has attracted the attention of both researchers and field experts in order to contain the associated energy bills and reduce their ecological impact. Many of the proposed solutions have been focused exclusively on the reduction of the power consumption, without adequately considering more traditional network engineering objectives such as balancing resource utilization, routing policy, or resilience schemes. As a consequence, network control plane strategies passed from one extreme to the other, from being totally energy-unaware to exclusively energy-efficient at the expenses of load-balancing, with obvious impacts on the power consumption in the former case and on the blocking rate in the latter one.\ud \ud In this paper, we present a hybrid routing and wavelength assignment algorithm that, when the network is lightly loaded, operates in an energy-efficient way, by routing the connections on the paths requiring the lowest amount of energy, while, when the network load increases, it dynamically switches to a pure load-balancing scheme in order to best allocate the available communication resources. The switching decision among load-balancing and energy-awareness is taken dynamically, driven by a threshold on the number of new connections requests reaching the network during a prefixed time window.\ud \ud Simulation results show the effectiveness of the hybrid algorithm, which achieves lower energy consumption than a pure load-balancing algorithm while keeping the network load fairly distributed on the available resources.Peer ReviewedPostprint (author's final draft

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Section: Related Workmentioning

confidence: 99%

A hybrid load-balancing and energy-aware RWA algorithm for telecommunication networks

Ricciardi

Sembroiz-Ausejo

Palmieri

et al. 2016

Computer Communications

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show abstract

“…The authors in [24] proposed a heuristic priority based wavelength assignment (HPWA) scheme to minimize the blocking probability. Chattarjee et al [25] have proposed a priority based routing and wavelength assignment scheme with incorporation of a traffic grooming mechanism (PRWATG) to reduce call blocking and congestion of an optical network. The authors in [27] proposed a new multicast green grooming (MGG) approach to save the energy consumption by using the energy-efficient optical bypass technology in been optical networks.…”

Section: Related Workmentioning

confidence: 99%

Design of light-tree based multicast traffic grooming in WDM mesh networks

Pradhan

Araiyer

2014

J Opt

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In this paper, we design an optimization problem for grooming of multicast traffic requests in WDM mesh networks. The objective is to minimize the network cost by minimizing the number of optical splitters and at the same time minimizing the total number of wavelengths used in the network. We propose a heuristic algorithm called Priority based Sub-Light Tree Grooming (PSLTG) to achieve scalability for larger networks. PSLTG tries to satisfy all multicast requests by constructing sub-light trees. A mathematical formulation is derived to minimize the network cost associated with the number of optical splitters and number of wavelengths used in the networks. Simulations are conducted on several standard networks to compare the cost and required number of wavelengths used in the networks. The results thus obtained by comparison, helped us to conclude that the proposed approach PSLTG produces better performance than well known Sub-Light Tree Saturated Grooming (SLTSG) and Multicast Traffic Grooming (MTG) algorithms.Keywords Lightpath · Light-tree · Multicast · Multicast routintg and wavelenght assignment (MRWA) · Splitter · Traffic grooming · Wavelength division multiplexing (WDM) A. K. Pradhan ( ) · S. Araiyer · T. De

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“…Fiber nonlinearity causes strong Four Wave Mixing (FWM) between many OFDM subcarriers, limiting the optical signal power, thus lowering the OSNR in a long haul system [19,[24][25][26][27]. The fiber dispersion and nonlinear effects causes the received constellation to become scattered [26][27][28] and shows significant degradation in the receiver eye diagram [29].Studies have indicated the detrimental effect of fiber dispersion on the QoS of opti cal networks due to its wavelength dependency [30,31] and solutions have been identified for the design of an efficient long haul transmission system.…”

Section: Introductionmentioning

confidence: 99%

An overview of fiber dispersion and nonlinearity compensation techniques in optical orthogonal frequency division multiplexing systems

Ilavarasan

Meenakshi

2015

J Opt

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Optical fiber based transmission network is the key technology to support high capacity backhaul needs for future wireless communication standards. Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO) transreception, Carrier Aggregation (CA), Co-operative Multi-Point (Co MP) and Wavelength Division Multiplexing (WDM) for backhaul/backbone are all, state of the art techniques used in most of these standards. The successful implementation of all these technologies requires modification of the network architecture which leads to challenges on backhaul design in terms of capacity and latency requirements. The optical fiber networks implemented in the form of analogue Radio over Fiber (RoF) or digital RoF offers a prospective solution. The performance of analogue RoF suffers from noise and linearity issues and digital RoF is degraded by fiber dispersion and nonlinearity due to high rate of transmission. Dispersion and nonlinearity compensation becomes essential to make the optical fiber backhaul supportive of the emerging wireless technologies. This paper reviews and compares various techniques proposed in the literature for compensating fiber dispersion and nonlinearity. A comprehensive comparison of fiber dispersion and nonlinear effects are summarized. Further, the selection criteria for choosing a particular compensating technique in Optical OFDM and WDM systems have been presented in this work.T. Ilavarasan

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Priority Based Routing and Wavelength Assignment With Traffic Grooming for Optical Networks

Cited by 88 publications

References 11 publications

A hybrid load-balancing and energy-aware RWA algorithm for telecommunication networks

A hybrid load-balancing and energy-aware RWA algorithm for telecommunication networks

Design of light-tree based multicast traffic grooming in WDM mesh networks

An overview of fiber dispersion and nonlinearity compensation techniques in optical orthogonal frequency division multiplexing systems

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