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Router and gateway node placement in wireless mesh networks for emergency rescue scenarios

Autonomous Intelligent Systems 2021年第1期1卷 202-231页

作者： Mariusz Wzorek Cyrille Berger Patrick Doherty Department of Computer and Information Science Linköping UniversityLinköpingSweden School of Intelligent Systems and Engineering Jinan University(Zhuhai Campus)Zhuhai 519070China

The focus of this paper is on base functionalities required for UAV-based rapid deployment of an ad hoc communication infrastructure in the initial phases of rescue *** main idea is to use heterogeneous teams of UAVs to deploy communication kits that include routers,and are used in the generation of ad hoc Wireless Mesh Networks(WMN).Several fundamental problems are considered and algorithms are proposed to solve these *** Router node placement problem(RNP)and a generalization of it that takes into account additional constraints arising in actual field usage is considered *** RNP problem tries to determine how to optimally place routers in a WMN.A new algorithm,the RRT-WMN algorithm,is proposed to solve this *** is based in part on a novel use of the Rapidly Exploring Random Trees(RRT)algorithm used in motion planning.A comparative empirical evaluation between the RRT-WMN algorithm and existing techniques such as the Covariance Matrix Adaptation Evolution Strategy(CMA-ES)and Particle Swarm Optimization(PSO),shows that the RRT-WMN algorithm has far better performance both in amount of time taken and regional coverage as the generalized RNP problem scales to realistic *** gateway node placement Problem(GNP)tries to determine how to locate a minimal number of gateway nodes in a WMN backbone network while satisfying a number of Quality of Service(QoS)*** alternatives are proposed for solving the combined RNP-GNP *** first approach combines the RRT-WMN algorithm with a preexisting graph clustering *** second approach,WMNbyAreaDecomposition,proposes a novel divide-and-conquer algorithm that recursively partitions a target deployment area into a set of disjoint regions,thus creating a number of simpler RNP problems that are then solved *** algorithms are evaluated on real-world GIS models of different size and *** is shown to outperform existing algorithms u

关键词： Robotics UAV deployed ad hoc networks Wireless mesh networks Router node placement gateway node placement Emergency rescue

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