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: "achieving ultra low latency in 5g millimeter wave cellular networks"
  Abstract: The IMT 2020 requirements of 20 Gbps peak data rate and 1 millisecond latency present significant engineering challenges for the design of 5G cellular systems. Use of the millimeter wave (mmWave) bands above 10 GHz --- where vast quantities of spectrum are available --- is a promising 5G candidate that may be able to rise to the occasion. #R##N#However, while the mmWave bands can support massive peak data rates, delivering these data rates on end-to-end service while maintaining reliability and ultra-low latency performance will require rethinking all layers of the protocol stack. This papers surveys some of the challenges and possible solutions for delivering end-to-end, reliable, ultra-low latency services in mmWave cellular systems in terms of the Medium Access Control (MAC) layer, congestion control and core network architecture.

Connected through hyperedge HE-1 (induced by source paper "analyzing the tradeoffs in using millimeter wave directional links for high data rate tactile internet applications"):
  with members:
    - "adaptive beamwidth selection for contention based access periods in millimeter wave wlans"
    - "low latency heterogeneous networks with millimeter wave communications"
    - "millimeter wave beam alignment large deviations analysis and design insights"
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "realizing the tactile internet haptic communications over next generation 5g cellular networks"
    - "low latency millimeter wave communications traffic dispersion or network densification"
    - "performance analysis of ieee 802 11ad mac protocol"
    - "ultra reliable and low latency communication in mmwave enabled massive mimo networks"

Connected through hyperedge HE-2 (induced by source paper "ultra low latency ull networks the ieee tsn and ietf detnet standards and related 5g ull research"):
  with members:
    - "a basic result on the superposition of arrival processes in deterministic networks"
    - "end to end simulation of 5g mmwave networks"
    - "information and communications technologies for sustainable development goals state of the art needs and perspectives"
    - "5g fronthaul latency and jitter studies of cpri over ethernet"
    - "r fft function split at ifft fft in unified lte cran and cable access network"
    - "towards 5g enabled tactile robotic telesurgery"
    - "fog aided wireless networks for content delivery fundamental latency tradeoffs"
    - "formal scheduling constraints for time sensitive networks"

Connected through hyperedge HE-3 (induced by source paper "the wireless control plane an overview and directions for future research"):
  with members:
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "a statistical characterization of localization performance in wireless networks"
    - "deep reinforcement learning a brief survey"
    - "survey of important issues in uav communication networks"
    - "target driven visual navigation in indoor scenes using deep reinforcement learning"
    - "small cell offloading through cooperative communication in software defined heterogeneous networks"
    - "dueling network architectures for deep reinforcement learning"
    - "learning continuous control policies by stochastic value gradients"

Connected through hyperedge HE-4 (induced by source paper "end to end simulation of 5g mmwave networks"):
  with members:
    - "integration of carrier aggregation and dual connectivity for the ns 3 mmwave module"
    - "x tcp a cross layer approach for tcp uplink flows in mmwave networks"
    - "enhancing tcp end to end performance in millimeter wave communications"
    - "beam alignment for millimetre wave links with motion prediction of autonomous vehicles"
    - "tcp in 5g mmwave networks link level retransmissions and mp tcp"
    - "provisioning low latency resilient mobile edge clouds for 5g"
    - "caching meets millimeter wave communications for enhanced mobility management in 5g networks"
    - "reliable video streaming over mmwave with multi connectivity and network coding"

Connected through hyperedge HE-5 (induced by source paper "understanding end to end effects of channel dynamics in millimeter wave 5g new radio"):
  with members:
    - "statistical blockage modeling and robustness of beamforming in millimeter wave systems"
    - "rapid fading due to human blockage in pedestrian crowds at 5g millimeter wave frequencies"
    - "millimeter wave human blockage at 73 ghz with a simple double knife edge diffraction model and extension for directional antennas"
    - "channel dynamics and snr tracking in millimeter wave cellular systems"
    - "transport layer performance in 5g mmwave cellular"
    - "a framework for end to end evaluation of 5g mmwave cellular networks in ns 3"
    - "frame structure design and analysis for millimeter wave cellular systems"
    - "directional cell discovery in millimeter wave cellular networks"

Connected through hyperedge HE-6 (induced by source paper "integrated millimeter wave and sub 6 ghz wireless networks a roadmap for ultra reliable low latency communications"):
  with members:
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "low latency heterogeneous networks with millimeter wave communications"
    - "caching meets millimeter wave communications for enhanced mobility management in 5g networks"
    - "virtual reality over wireless networks quality of service model and learning based resource management"
    - "improved handover through dual connectivity in 5g mmwave mobile networks"
    - "joint millimeter wave and microwave resources allocation in cellular networks with dual mode base stations"
    - "performance comparison of dual connectivity and hard handover for lte 5g tight integration in mmwave cellular networks"
    - "millimeter wave cellular wireless networks potentials and challenges"

Connected through hyperedge HE-7 (induced by source paper "low latency heterogeneous networks with millimeter wave communications"):
  with members:
    - "delay and backlog analysis for 60 ghz wireless networks"
    - "what will 5g be"

Connected through hyperedge HE-8 (induced by source paper "toward low latency and ultra reliable virtual reality"):
  with members:
    - "energy efficient resource allocation for mobile edge computing based augmented reality applications"
    - "millimeter wave cellular wireless networks potentials 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)