Abstract
Efficient and emergency data dissemination service in vehicular networks (VN) is very important in some situations, such as earthquakes, maritime rescue, and serious traffic accidents. Data loss frequently occurs in the data transition due to the unreliability of the wireless channel and there are no enough available UAVs providing data dissemination service for the large disaster areas. UAV with an adjustable active antenna can be used in light of the situation. However, data dissemination assisted by UAV with the adjustable active antenna needs corresponding effective data dissemination framework. A UAV-assisted data dissemination method based on network coding is proposed. First, the graph theory to model the state of the data loss of the vehicles is used; the data dissemination problem is transformed as the maximum clique problem of the graph. With the coverage of the directional antenna being limited, a parallel method to find the maximum clique based on the region division is proposed. Lastly, the method's effectiveness is demonstrated by the simulation; the results show that the solution proposed can accelerate the solving process of finding the maximum clique and reduce the number of UAV broadcasts. This manuscript designs a novel scheme for the UAV-assisted data dissemination in vehicular networks based on network coding. The graph theory is used to model the state of the data loss of the vehicles. With the coverage of the directional antenna being limited, then a parallel method is proposed to find the maximum clique of the graph based on the region division. The effectiveness of the method is demonstrated by the simulation.
Highlights
Transport commuting has become a ubiquitous part of daily life; vehicular networks (VNs) play a positive role and improve the living standards of the people
In order to improve the efficiency of Unmanned Aerial Vehicle (UAV)-assisted data distribution, we propose a method of data dissemination based on network coding technology
Due to the mobility of vehicles, the data dissemination in the VANETs is mainly realized by wireless communication technology, such as the Wave, LTE and 5G et al Data dissemination in the VN is mainly implemented by the way of self-organizing between the vehicles or the centralized mode assisted by the infrastructure such as the base station and road-side unit (RSU)
Summary
Transport commuting has become a ubiquitous part of daily life; vehicular networks (VNs) play a positive role and improve the living standards of the people. Sometimes UAV can be deployed as a mobile base station to assist in the efficient distribution of data when the available communication resources are insufficient for many users, such as many users of different vehicles need to be informed immediately about the rescue information of the natural disaster or battlefield. To the best of our knowledge, the current research work does not involve the data distribution method of the UAV with the adjustable active antenna. In order to improve the efficiency of UAV-assisted data distribution, we propose a method of data dissemination based on network coding technology. ∙ The simulation results show that the proposed method improves the efficiency of UAV-assisted data dissemination. Our work is the first study about the data dissemination method of the UAV with an adjustable active antenna. Part 4 introduces the procedure of the simulation and the related results
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