human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "coverage analysis for low altitude uav networks in urban environments"
  Abstract: Wireless access points on unmanned aerial vehicles (UAVs) are being considered for mobile service provisioning in commercial networks. To be able to efficiently use these devices in cellular networks it is necessary to first have a qualitative and quantitative understanding of how their design parameters reflect on the service quality experienced by the end user. In this paper we set up a scenario where a network of UAVs operating at a certain height above ground provide wireless service within coverage areas shaped by their directional antennas. We provide an analytical expression for the coverage probability experienced by a typical user as a function of the UAV parameters and demonstrate the performance trade-offs that occur as these parameters are varied.

Connected through hyperedge HE-1 (induced by source paper "trajectory design for multiple uav assisted wireless networks"):
  with members:
    - "adaptive deployment for uav aided communication networks"
    - "energy minimization for wireless communication with rotary wing uav"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "survey on uav cellular communications practical aspects standardization advancements regulation and security challenges"
    - "placement optimization of uav mounted mobile base stations"
    - "dronecells improving 5g spectral efficiency using drone mounted flying base stations"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "mobile unmanned aerial vehicles uavs for energy efficient internet of things communications"

Connected through hyperedge HE-2 (induced by source paper "analysis of data harvesting by unmanned aerial vehicles"):
  with members:
    - "the sky is not the limit lte for unmanned aerial vehicles"
    - "an overview of 3gpp release 15 study on enhanced lte support for connected drones"
    - "poisson cox point processes for vehicular networks"
    - "wireless communication using unmanned aerial vehicles uavs optimal transport theory for hover time optimization"
    - "designing and implementing future aerial communication networks"
    - "low power wide area networks an overview"
    - "internet of things iot a vision architectural elements and future directions"

Connected through hyperedge HE-3 (induced by source paper "underlay drone cell for temporary events impact of drone height and aerial channel environments"):
  with members:
    - "uav aided offloading for cellular hotspot"
    - "coverage and rate analysis for unmanned aerial vehicle base stations with los nlos propagation"
    - "uplink coverage performance of an underlay drone cell for temporary events"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "dronecells improving 5g spectral efficiency using drone mounted flying base stations"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "uplink performance analysis of a drone cell in a random field of ground interferers"
    - "coexistence of terrestrial and aerial users in cellular networks"

Connected through hyperedge HE-4 (induced by source paper "adaptive deployment for uav aided communication networks"):
  with members:
    - "local map assisted positioning for flying wireless relays"
    - "uav aided offloading for cellular hotspot"
    - "ultra reliable uav communication using altitude and cooperation diversity"
    - "uplink coverage performance of an underlay drone cell for temporary events"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "fast deployment of uav networks for optimal wireless coverage"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "caching in the sky proactive deployment of cache enabled unmanned aerial vehicles for optimized quality of experience"

Connected through hyperedge HE-5 (induced by source paper "uplink coverage performance of an underlay drone cell for temporary events"):
  with members:
    - "dronecells improving 5g spectral efficiency using drone mounted flying base stations"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "coexistence of terrestrial and aerial users in cellular networks"
    - "spectrum sharing and cyclical multiple access in uav aided cellular offloading"
    - "coverage maximization for a poisson field of drone cells"
    - "joint altitude and beamwidth optimization for uav enabled multiuser communications"
    - "designing and implementing future aerial communication networks"
    - "the new frontier in ran heterogeneity multi tier drone cells"

Connected through hyperedge HE-6 (induced by source paper "cellular connected uav potentials challenges and promising technologies"):
  with members:
    - "cellular enabled uav communication trajectory optimization under connectivity constraint"
    - "massive mimo for communications with drone swarms"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "the new frontier in ran heterogeneity multi tier drone cells"
    - "enabling uav cellular with millimeter wave communication potentials and approaches"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"

Connected through hyperedge HE-7 (induced by source paper "backhaul for low altitude uavs in urban environments"):
  with members:
    - "the sky is not the limit lte for unmanned aerial vehicles"
    - "modeling and analyzing millimeter wave cellular systems"
    - "inter operator resource management for millimeter wave multi hop backhaul networks"
    - "coexistence of terrestrial and aerial users in cellular networks"
    - "a stochastic geometry model of backhaul and user coverage in urban uav networks"
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "fso based vertical backhaul fronthaul framework for 5g wireless networks"
    - "enabling uav cellular with millimeter wave communication potentials and approaches"

Connected through hyperedge HE-8 (induced by source paper "reshaping cellular networks for the sky the major factors and feasibility"):
  with members:
    - "ultra reliable uav communication using altitude and cooperation diversity"
    - "maximizing indoor wireless coverage using uavs equipped with directional antennas"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "on the fundamental characteristics of ultra dense small cell networks"
    - "a stochastic geometry model of backhaul and user coverage in urban uav networks"
    - "backhaul aware robust 3d drone placement in 5g wireless networks"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.NI(Networking and Internet Architecture)