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Decentralized content sharing in mobile ad-hoc networks:A survey

Digital Communications and networks 2023年第6期9卷 1363-1398页

作者： Shahriar Kaisar Joarder Kamruzzaman Gour Karmakar Md Mamunur Rashid Department of Information Systems and Business Analytics RMIT UniversityAustralia School of Engineering IT and Physical SciencesFederation University AustraliaVictoriaAustralia School of Engineering and Technology Central Queensland UniversityAustralia

The evolution of smart mobile devices has significantly impacted the way we generate and share contents and introduced a huge volume of Internet traffic.To address this issue and take advantage of the short-range communication capabilities of smart mobile devices,the decentralized content sharing approach has emerged as a suitable and promising alternative.Decentralized content sharing uses a peer-to-peer network among colocated smart mobile device users to fulfil content requests.Several articles have been published to date to address its different aspects including group management,interest extraction,message forwarding,participation incentive,and content replication.This survey paper summarizes and critically analyzes recent advancements in decentralized content sharing and highlights potential research issues that need further consideration.

关键词： Decentralized content sharing Mobile ad-hoc networks Delay-tolerant networks flying ad hoc networks Message forwarding Content caching Incentive Group formation Misbehavior detection

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Leader-following flocking for unmanned aerial vehicle swarm with distributed topology control

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Science China(Information Sciences) 2020年第4期63卷 140-153页

作者： Chao LIU Meng WANG Qian ZENG Wei HUANGFU Beijing advanced Innovation Center for Materials Genome Engineering School of Computer and Communication Engineering University of Science and Technology Beijing

To address the flocking issues of an unmanned aerial vehicle(UAV) swarm operating at a leaderfollower mode, distributed control protocols comprising both kinetic controller and topology control algorithm must be implemented. For flocking the UAV swarm, a distributed control-input method is required for both maintaining a relatively steady state between neighboring vehicles(including velocity matching and distance maintenance) and avoiding vehicle-to-vehicle collision. Furthermore, the stability of control protocols should be analyzed using the potential energy function. In particular, a distributed β-angle test(BAT) rule in the proposed topology-control issue may allow each UAV to determine its neighboring set by exploiting the locally sensed information, thereby significantly reducing the communication overhead of the entire swarm.In addition, node-degree bound is derived to demonstrate the feasibility of the proposed algorithm, in which the optimal value in terms of convergence is analyzed. The flocking of the flying ad-hoc network(FANET)can be achieved in a self-organizing way without the use of an external control center via the distributed control protocols. Ultimately, the proposed analysis is verified by numerical results.

关键词： flying ad hoc networks flocking leader-follower topology control neighbor selection

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