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Analysis of resource sharing in transparent networks

Dimitri Staessens (UGent) , Didier Colle (UGent) , Mario Pickavet (UGent) and Piet Demeester (UGent)
(2015) TELECOMMUNICATION SYSTEMS. 60(4). p.503-513
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Abstract
Transparent optical networking promises a cost-efficient solution for future core and metro networks because of the efficacy of switching high-granularity trunk traffic without opto-electronic conversion. Network availability is an important performance parameter for network operators, who are incorporating protection and restoration mechanisms in the network to achieve competitive advantages. This paper focuses on the reduction in Capital Expenditures (CapEx) expected from implementing sharing of backup resources in path-protected transparent networks. We dimension a nationwide network topology for different protection mechanisms using transparent and opaque architectures. We investigate the CapEx reductions obtained through protection sharing on a population of 1000 randomly generated biconnected planar topologies with 14 nodes. We show that the gain for transparent networks is heavily dependent on the offered load, with almost no relative gain for low load (no required parallel line systems). We also show that for opaque networks the CapEx reduction through protection sharing is independent of the traffic load and shows only a small dependency on the number of links in the network. The node CapEx reduction for high load (relative to the number of channels in a line system) is comparable to the CapEx reduction in opaque OTN systems. This is rather surprising as in OTN systems the number of transceivers and linecards and the size of the OTN switching matrix all decrease, while in transparent networks only the degree of the ROADM (number and size of WSSs in the node) decreases while the number of transponders remains the same.
Keywords
OPTICAL NETWORKS, IBCN, PERFORMANCE, Network design, Transparent network, Resource sharing, Resiliency

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Citation

Please use this url to cite or link to this publication:

MLA
Staessens, Dimitri et al. “Analysis of Resource Sharing in Transparent Networks.” TELECOMMUNICATION SYSTEMS 60.4 (2015): 503–513. Print.
APA
Staessens, D., Colle, D., Pickavet, M., & Demeester, P. (2015). Analysis of resource sharing in transparent networks. TELECOMMUNICATION SYSTEMS, 60(4), 503–513.
Chicago author-date
Staessens, Dimitri, Didier Colle, Mario Pickavet, and Piet Demeester. 2015. “Analysis of Resource Sharing in Transparent Networks.” Telecommunication Systems 60 (4): 503–513.
Chicago author-date (all authors)
Staessens, Dimitri, Didier Colle, Mario Pickavet, and Piet Demeester. 2015. “Analysis of Resource Sharing in Transparent Networks.” Telecommunication Systems 60 (4): 503–513.
Vancouver
1.
Staessens D, Colle D, Pickavet M, Demeester P. Analysis of resource sharing in transparent networks. TELECOMMUNICATION SYSTEMS. 2015;60(4):503–13.
IEEE
[1]
D. Staessens, D. Colle, M. Pickavet, and P. Demeester, “Analysis of resource sharing in transparent networks,” TELECOMMUNICATION SYSTEMS, vol. 60, no. 4, pp. 503–513, 2015.
@article{7235377,
  abstract     = {Transparent optical networking promises a cost-efficient solution for future core and metro networks because of the efficacy of switching high-granularity trunk traffic without opto-electronic conversion. Network availability is an important performance parameter for network operators, who are incorporating protection and restoration mechanisms in the network to achieve competitive advantages. This paper focuses on the reduction in Capital Expenditures (CapEx) expected from implementing sharing of backup resources in path-protected transparent networks. We dimension a nationwide network topology for different protection mechanisms using transparent and opaque architectures. We investigate the CapEx reductions obtained through protection sharing on a population of 1000 randomly generated biconnected planar topologies with 14 nodes. We show that the gain for transparent networks is heavily dependent on the offered load, with almost no relative gain for low load (no required parallel line systems). We also show that for opaque networks the CapEx reduction through protection sharing is independent of the traffic load and shows only a small dependency on the number of links in the network. The node CapEx reduction for high load (relative to the number of channels in a line system) is comparable to the CapEx reduction in opaque OTN systems. This is rather surprising as in OTN systems the number of transceivers and linecards and the size of the OTN switching matrix all decrease, while in transparent networks only the degree of the ROADM (number and size of WSSs in the node) decreases while the number of transponders remains the same.},
  author       = {Staessens, Dimitri and Colle, Didier and Pickavet, Mario and Demeester, Piet},
  issn         = {1018-4864},
  journal      = {TELECOMMUNICATION SYSTEMS},
  keywords     = {OPTICAL NETWORKS,IBCN,PERFORMANCE,Network design,Transparent network,Resource sharing,Resiliency},
  language     = {eng},
  number       = {4},
  pages        = {503--513},
  title        = {Analysis of resource sharing in transparent networks},
  url          = {http://dx.doi.org/10.1007/s11235-015-9990-z},
  volume       = {60},
  year         = {2015},
}

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