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: "waveform and spectrum management for unmanned aerial systems beyond 2025"
  Abstract: The application domains of civilian unmanned aerial systems (UASs) include agriculture, exploration, transportation, and entertainment. The expected growth of the UAS industry brings along new challenges: Unmanned aerial vehicle (UAV) flight control signaling requires low throughput, but extremely high reliability, whereas the data rate for payload data can be significant. This paper develops UAV number projections and concludes that small and micro UAVs will dominate the US airspace with accelerated growth between 2028 and 2032. We analyze the orthogonal frequency division multiplexing (OFDM) waveform because it can provide the much needed flexibility, spectral efficiency, and, potentially, reliability and derive suitable OFDM waveform parameters as a function of UAV flight characteristics. OFDM also lends itself to agile spectrum access. Based on our UAV growth predictions, we conclude that dynamic spectrum access is needed and discuss the applicability of spectrum sharing techniques for future UAS communications.

Connected through hyperedge HE-1 (induced by source paper "an autonomous spectrum management scheme for unmanned aerial vehicle networks in disaster relief operations"):
  with members:
    - "a solution for dynamic spectrum management in mission critical uav networks"
    - "a survey on hardware based security mechanisms for internet of things"
    - "ring oscillator and its application as physical unclonable function puf for password management"
    - "overview of blakley s secret sharing scheme"
    - "a reputation based stackelberg game model to enhance secrecy rate in spectrum leasing to selfish iot devices"
    - "leader follower based coalition formation in large scale uav networks a quantum evolutionary approach"
    - "traffic light control using deep policy gradient and value function based reinforcement learning"
    - "spectrum sharing and cyclical multiple access in uav aided cellular offloading"

Connected through hyperedge HE-2 (induced by source paper "cache assisted broadcast relay wireless networks a delivery time cache memory tradeoff"):
  with members:
    - "fog aided wireless networks for content delivery fundamental latency tradeoffs"
    - "fundamental limits on latency in transceiver cache aided hetnets"
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "cache aided interference management in partially connected wireless networks"
    - "decentralized caching and coded delivery with distinct cache capacities"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "fundamental limits of cache aided wireless bc interplay of coded caching and csit feedback"
    - "multi server coded caching"

Connected through hyperedge HE-3 (induced by source paper "uav aided multi way communications"):
  with members:
    - "degrees of freedom of the bursty mimo x channel without feedback"
    - "three way channels with multiple unicast sessions capacity approximation via network transformation"
    - "gaussian interference channel with intermittent feedback"

Connected through hyperedge HE-4 (induced by source paper "rate maximizing ofdm pilot patterns for uav communications in nonstationary a2g channels"):
  with members:
    - "adaptive pilot patterns for ca ofdm systems in nonstationary wireless channels"
    - "joint altitude and beamwidth optimization for uav enabled multiuser communications"

Connected through hyperedge HE-5 (induced by source paper "massive mimo for drone communications case studies and future directions"):
  with members:
    - "convolutionally coded snr adaptive transmission for low latency communications"
    - "understanding uav cellular communications from existing networks to massive mimo"
    - "mobile networks connected drones field trials simulations and design insights"
    - "the sky is not the limit lte for unmanned aerial vehicles"
    - "a telecom perspective on the internet of drones from lte advanced to 5g"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "efficient dsp and circuit architectures for massive mimo state of the art and future directions"
    - "security privacy and safety evaluation of dynamic and static fleets of drones"

Connected through hyperedge HE-6 (induced by source paper "delivery time minimization in edge caching synergistic benefits of subspace alignment and zero forcing"):
  with members:
    - "fundamental limits on latency in transceiver cache aided hetnets"
    - "fundamental limits on delivery time in cloud and cache aided heterogeneous networks"
    - "fundamental limits of cache aided interference management"
    - "cache aided wireless networks tradeoffs between storage and latency"
    - "cache aided interference channels"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "a systematic approach for interference alignment in csit less relay aided x networks"
    - "fundamental limits of caching"

Connected through hyperedge HE-7 (induced by source paper "adaptive pilot patterns for ca ofdm systems in nonstationary wireless channels"):
  with members:
    - "pilot pattern adaptation for 5g mu mimo wireless communications"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"
    - "delay and doppler spreads of nonstationary vehicular channels for safety relevant scenarios"

Connected through hyperedge HE-8 (induced by source paper "massive mimo for drone communications applications case studies and future directions"):
  with members:
    - "survey of important issues in uav communication networks"
    - "physical layer security for massive mimo an overview on passive eavesdropping and active attacks"

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)