Link Design for Wireless Optical Communication Network based on Ant Colony Algorithm

Xiaorui Wang and Dongdong Chen

10.23919/JCN.2021.000042

Abstract : With the maturation of space laser communicationtechnologies and the development of deep-space explorationtechnologies, deep-space optical network (DSON) is expected tobecome an important foundation and inevitable developmenttrend of future deep-space communication. According to thecharacteristics of DSON, we present a DSON topology structurebased on flat wireless mesh network (FWMN). To improve therobustness of DSON and realize load balancing, the RoutingAlgorithm based on ant colony algorithm (RA-ACA) for DSON isproposed in this paper. We primarily research the unidirectionallinks problem and node energy consumption of DSON with RAACA.Instead of deleting the unidirectional links in the wholenetworks used in traditional ant colony algorithm (TACA), wemake the best of unidirectional links, and then the performance ofnetwork will be improved. Also, in order to control the energyconsumption speed of nodes and prevent premature death ofnodes, we put the node energy as the routing factor in the routing,thus the lifetime of the whole network will be increased. Finally,aiming to enhance the convergence speed, we reserve the nodepheromone for the subsequent path finding. Simulation resultsdemonstrate the advantages of the proposed RA-ACA comparedwith TACA for DSON.​ 

Index terms : Ant colony algorithm, deep-space optical network (DSON), node energy, undirectional links