Dynamic Survivable Multipath Routing and Spectrum Allocation in OFDM-Based Flexible Optical Networks

Ruan, Lu; Zheng, Yanwei

doi:10.1364/jocn.6.000077

Cited by 69 publications

(39 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In [13] the SM-RSA strategy presents better performance when compared to other survivability strategies based on single-path. In general, SM-RSA obtains greater efficiency in terms of blocking probability when values lower than q are used.…”

Section: Survivability In Elastic Optical Networkmentioning

confidence: 94%

“…In the SM-RSA strategy, a request is represented by r = (s, d, B, q), where s and d are the source and destination nodes, B is the bandwidth requirement, and q is the survivability level requirement (0 ≤ q ≤ 1), indicating qB bandwidth must be available after any single link failure. In accordance to [13], to accommodate a connection request r = (s, d, B, q) using multipath provisioning, it is required to find N ≥ 2 link-disjoint paths between s and d and allocate capacity on each of the N paths so that the total capacity on the N paths is at least B, and the total capacity on any group of N − 1 paths is at least qB. Figure 4 illustrates the use of RSA-MS strategy to attend request R1=(s1,d1,B=10,q=0.3) (Fig 4a) and R2=(s2,d2,B=10,q=0.7).…”

Section: Survivability In Elastic Optical Networkmentioning

confidence: 98%

“…Other survivability strategies have been proposed in literature as alternatives to classic strategies. The authors of [13] propose a survivability strategy based on multipath. In this strategy a connection can use different optical paths to transport the data.…”

Section: Survivability In Elastic Optical Networkmentioning

confidence: 99%

“…In the network without physical layer impairments, the modulation is calculated based on the maximum reach of the transmission, in accordance to [2], [13]. It is important to note that such assumption is not realistic.…”

Section: Performance Evaluationmentioning

confidence: 99%

See 3 more Smart Citations

Performance Evaluation of Survivability Strategies for Elastic Optical Networks under Physical Layer Impairments

Lacerda¹,

Fontinele²,

Moura³

et al. 2017

CLEIej

View full text Add to dashboard Cite

This paper carried out a performance evaluation study that compares two survivability strategies (DPP and SM-RSA) for elastic optical networks with and without physical layer impairments. The evaluated scenarios include three representative topologies for elastic optical network, NSFNET, EON and USA. It also analyzes the increase of blocking probability when the survivability strategies are evaluated under the realistic scenario that assumes physical layer impairments. For all studied topologies under physical layer impairments, the survivability strategies achieved blocking probability above 80%.

show abstract

Section: Survivability In Elastic Optical Networkmentioning

confidence: 94%

Section: Survivability In Elastic Optical Networkmentioning

confidence: 98%

Section: Survivability In Elastic Optical Networkmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

See 2 more Smart Citations

Performance Evaluation of Survivability Strategies for Elastic Optical Networks under Physical Layer Impairments

Lacerda¹,

Fontinele²,

Moura³

et al. 2017

CLEIej

View full text Add to dashboard Cite

show abstract

“…[6] DCDM was suggested for improved traffic grooming over optical networks to obtain larger spectral efficiency. The paper [7] dealt in limiting the connection sizes to obtain gain at the cost of losing some flexibility in EON. Various Modulation techniques were analyzed and compared in [8].…”

Section: Introductionmentioning

confidence: 99%

Efficient Spectrum Allocation with Survivability Technique in Elastic Optical Networks

Krishnamoorthy¹,

Sivasubramanian²,

Arumugam³

et al. 2016

IJUNESST

View full text Add to dashboard Cite

show abstract

An efficient network‐side path protection scheme in OFDM‐based elastic optical networks

Hai

Morvan

Gravey

2017

Int J Communication

View full text Add to dashboard Cite

SummaryElastic optical networks (EONs) based on orthogonal frequency division multiplexing (OFDM) technologies are seen as a promising solution for next-generation optical transport networks to support the rapidly growing and heterogeneous traffic. In EONs, the elastic bandwidth allocation and modulation format agilities combined with reconfiguration capabilities pave the new way for leveraging the network efficiency. In this paper, we recast the network-side path protection in EONs considering the opportunities and challenges enabled by the flexible operation of OFDM technologies. For the first time, we propose to take advantages of the reconfiguration capabilities of OFDM transponders for adapting to transmission condition variations when switching from the working to protection path in network-side protection. The idea is inspired by the observation that in reach-diverse networks, the transmission margin between the working path and protection path of a connection might be large enough, and thus, the most spectrum-efficient modulation format for each path could be separately tailored, rather than imposed by a common one based on the worse condition as with current fixed transmission technologies. We formulate survivable transparent network designs for both dedicated and shared path protection in the form of integer linear programming model taking into account our proposal for enabling different transmission operations between working and protection mode. Numerical results based on extensive simulations on a realistic network topology, COST239, are presented to highlight the benefits of our proposal compared to conventional approaches in terms of spectrum efficiency for un-capacitated scenarios and improvements in blocking ratio for capacitated scenarios. KEYWORDSelastic optical networks, mixed integer linear programming, OFDM transponders, optical protection, routing and spectrum assignment

show abstract

Dynamic Survivable Multipath Routing and Spectrum Allocation in OFDM-Based Flexible Optical Networks

Cited by 69 publications

References 7 publications

Performance Evaluation of Survivability Strategies for Elastic Optical Networks under Physical Layer Impairments

Performance Evaluation of Survivability Strategies for Elastic Optical Networks under Physical Layer Impairments

Efficient Spectrum Allocation with Survivability Technique in Elastic Optical Networks

An efficient network‐side path protection scheme in OFDM‐based elastic optical networks

Contact Info

Product

Resources

About