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coverage performance of the multilayer UAV-terrestrial HetNet with CoMP transmission scheme

Frontiers of Information Technology & Electronic Engineering 2022年第1期23卷 61-72页

作者： Weihao WANG Yifan JIANG Zesong FEI Jing GUO School of Information and Electronics Beijing Institute of TechnologyBeijing100081China

To support the ubiquitous connectivity requirement of sixth generation communication,unmanned aerial vehicles(UAVs)play a key role as a major part of the future communication *** major issue in UAV communications is the interference resulting from spectrum sharing and line-of-sight ***,the application of the coordinated multipoint(CoMP)technology has been proposed to reduce the interference in the UAV-terrestrial heterogeneous network(HetNet).In this paper,we consider a three-dimensional(3D)multilayer UAV-terrestrial HetNet,where the aerial base stations(ABSs)are deployed at multiple different *** stochastic geometry,we develop a tractable mathematical framework to characterize the aggregate interference and evaluate the coverage probability of this *** numerical results show that the implementation of the CoMP scheme can effectively reduce the interference in the network,especially when the density of base stations is relatively ***,the system parameters of the ABSs deployed at higher altitudes dominantly influence the coverage performance of the considered 3D HetNet.

关键词： Unmanned aerial vehicle Poisson point process Coordinated multipoint(CoMP) Statistics of interference coverage performance

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Satellite Constellation Design with Multi-Objective Genetic Algorithm for Regional Terrestrial Satellite Network

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China Communications 2018年第8期15卷 1-10页

作者： Cuiqin Dai Guimin Zheng Qianbin Chen Chongqing Key Lab of Mobile Communication Technology Chongqing University of Posts and Telecommunications

Constellations design for regional terrestrial-satellite network can strengthen the coverage for incomplete terrestrial cellular network. In this paper, a regional satellite constellation design scheme with multiple feature points and multiple optimization indicators is proposed by comprehensively considering multi-objective optimization and genetic algorithm, and "the Belt and Road" model is presented in the way of dividing over 70 nations into three regular target areas. Following this, we formulate the optimization model and devise a multi-objective genetic algorithm suited for the regional area with the coverage rate under simulating, computing and determining. Meanwhile, the total number of satellites in the constellation is reduced by calculating the ratio of actual coverage of a single-orbit constellation and the area of targets. Moreover, the constellations' performances of the proposed scheme are investigated with the connection of C++ and Satellite Tool Kit(STK). Simulation results show that the designed satellite constellations can achieve a good coverage of the target areas.

关键词： regional terrestrial-satellite net-work constellation design multi-objective optimization genetic algorithm coverage performance

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Satellite Constellation Design with Adaptively Continuous Ant System Algorithm

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Chinese Journal of Aeronautics 2007年第4期20卷 297-303页

作者： He Quan Han Chao School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100083 China

The ant system algorithm （ASA） has proved to be a novel meta-heuristic algorithm to solve many multivariable problems. In this paper, the earth coverage of satellite constellation is analyzed and a n ＋ 1^ -fold coverage rate is put forward to evaluate the coverage performance of a satellite constellation. An optimization model of constellation parameters is established on the basis of the coverage performance. As a newly developed method, ASA can be applied to optimize the constellation parameters. In order to improve the ASA, a rule for adaptive number of ants is proposed, by which the search range is obviously enlarged and the convergence speed increased. Simulation results have shown that the ASA is more quick and efficient than other methodV211.71s.

关键词： ant system algorithm satellite constellation optimization design coverage performance adaptive adjusting

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