Resilient backhaul network design using hybrid radio/free-space optical technology

Embargo End Date
2018-07-26

Type
Conference Paper

Authors
Douik, Ahmed S.
Dahrouj, Hayssam
Al-Naffouri, Tareq Y.
Alouini, Mohamed-Slim

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program

Online Publication Date
2016-07-26

Print Publication Date
2016-05

Date
2016-07-26

Abstract
The radio-frequency (RF) technology is a scalable solution for the backhaul planning. However, its performance is limited in terms of data rate and latency. Free Space Optical (FSO) backhaul, on the other hand, offers a higher data rate but is sensitive to weather conditions. To combine the advantages of RF and FSO backhauls, this paper proposes a cost-efficient backhaul network using the hybrid RF/FSO technology. To ensure a resilient backhaul, the paper imposes a given degree of redundancy by connecting each node through K link-disjoint paths so as to cope with potential link failures. Hence, the network planning problem considered in this paper is the one of minimizing the total deployment cost by choosing the appropriate link type, i.e., either hybrid RF/FSO or optical fiber (OF), between each couple of base-stations while guaranteeing K link-disjoint connections, a data rate target, and a reliability threshold. The paper solves the problem using graph theory techniques. It reformulates the problem as a maximum weight clique problem in the planning graph, under a specified realistic assumption about the cost of OF and hybrid RF/FSO links. Simulation results show the cost of the different planning and suggest that the proposed heuristic solution has a close-to-optimal performance for a significant gain in computation complexity. © 2016 IEEE.

Citation
Douik A, Dahrouj H, Al-Naffouri TY, Alouini M-S (2016) Resilient backhaul network design using hybrid radio/free-space optical technology. 2016 IEEE International Conference on Communications (ICC). Available: http://dx.doi.org/10.1109/ICC.2016.7511143.

Acknowledgements
Hayssam Dahrouj would like to thank Effat University in Jeddah, Saudi Arabia, for funding the research reported in this paper through the Research and Consultancy Institute.

Publisher
IEEE

Journal
2016 IEEE International Conference on Communications (ICC)

Conference/Event Name
2016 IEEE International Conference on Communications, ICC 2016

DOI
10.1109/ICC.2016.7511143

arXiv
1508.00140
1508.00140

Additional Links
http://ieeexplore.ieee.org/document/7511143/http://arxiv.org/pdf/1508.00140

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