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Topology Optimizing in FSO-based UAVs Relay Networks for Resilience Enhancement

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Abstract

Applying free space optical (FSO) in unmanned aerial vehicles (UAVs) relay networks has emerged as a promising technology due to high throughput, long transmission range, and the negligible interference incurred by FSO communications. However, FSO links are vulnerable in free space because of atmospheric turbulence, thus significantly reducing the reliability of the network. Thus, how to construct the FSO-based UAVs relay network topology to achieve a high network reliability is critical. This paper studies the network topology formation problem by considering the network resilience, where the resilience is referred to the ability of a network topology to defend against link failures. The network topology formation problem is formulated as a mixed integer nonlinear programming problem with the objective of maximizing network resilience. To solve this problem, two network resilience aware topology formation (NRATF) methods, i.e., centralized-NRATF and distributed-NRATF, are investigated to solve the topology designing problem efficiently. The performance of the proposed algorithms are evaluated via extensive simulations.

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Acknowledgments

This work was supported by the National Nature Science Foundation of China Project (61871051), the Beijing Natural Science Foundation (4192039), and the fund of State Key Laboratory of Advanced Optical Communication Systems and Networks, China (2019GZKF5).

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Authors and Affiliations

  1. State Key Laboratory of Information Photonics and Optical Communication, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Zhiqun Gu, Jiawei Zhang & Yuefeng Ji

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  1. Zhiqun Gu
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  2. Jiawei Zhang
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  3. Yuefeng Ji
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Correspondence to Yuefeng Ji.

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Gu, Z., Zhang, J. & Ji, Y. Topology Optimizing in FSO-based UAVs Relay Networks for Resilience Enhancement. Mobile Netw Appl 25, 350–362 (2020). https://doi.org/10.1007/s11036-019-01290-y

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