Topology Control Algorithm and Dynamic Management Scheme for Mobile FSO Networks

Abstract

Due to the limited node degree and fragile links, design and management of free space optical (FSO) networks is still a great challenge. In this paper, based on a tiered mobile FSO network model, a localized Delaunay triangulation (LDT) algorithm for the topology control of the upper tier is proposed. Then we study how the lower tier is supported by the upper tier. An effective dynamic multipoint-to-point access (DMPPA) method is presented, which can "enlarge" the access degree without sacrificing the connectivity of the upper tier. Meanwhile, a mutual "help" strategy is proposed to balance the residual energy of the cluster heads and improve the node distribution uniformity. Simulation results show that the LDT algorithm can produce a high-connectivity topology and satisfy node degree constraints and that the DMPPA method and the "help" strategy can ensure the network quality of service and extend the survival time of the whole FSO network.

Node-Block based Topology Control Algorithm for Mobile Optical Wireless Communication Networks

“…With an increasingly extensive application scenario, optical wireless communication (OWC) has attracted more and more attentions due to high bandwidth, resistance to electromagnetic interference, high security, flexible networking, etc. [1][2][3][4][5][6][7][8]. With the increasing demand for Quality of Service (QoS) and capacity of mobile communications, it is attractive to construct OWC networks to guarantee timely multi-user communications.…”

Node-Block based Topology Control Algorithm for Mobile Optical Wireless Communication Networks

“…Recently, optical wireless communication (OWC) has attracted more and more attentions due to high bandwidth, resistance to electromagnetic interference, high security, flexible networking etc. [1][2][3]. With the higher demand for QoS and capacity of mobile communications, it is necessary to construct OWC networks to guarantee communications in time among multiple users.…”