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: "performance laws of large heterogeneous cellular networks"
  Abstract: We propose a model for heterogeneous cellular networks assuming a space-time Poisson process of call arrivals, independently marked by data volumes, and served by different types of base stations (having different transmission powers) represented by the superposition of independent Poisson processes on the plane. Each station applies a processor sharing policy to serve users arriving in its vicinity, modeled by the Voronoi cell perturbed by some random signal propagation effects (shadowing). Users' peak service rates depend on their signal-to-interference-and-noise ratios (SINR) with respect to the serving station. The mutual-dependence of the cells (due to the extra-cell interference) is captured via some system of cell-load equations impacting the spatial distribution of the SINR. We use this model to study in a semi-analytic way (involving only static simulations, with the temporal evolution handled by the queuing theoretic results) network performance metrics (cell loads, mean number of users) and the quality of service perceived by the users (mean throughput) served by different types of base stations. Our goal is to identify macroscopic laws regarding these performance metrics, involving averaging both over time and the network geometry. The reveled laws are validated against real field measurement in an operational network.

Connected through hyperedge HE-1 (induced by source paper "spatio temporal modeling for massive and sporadic access"):
  with members:
    - "tradeoff between delay and physical layer security in wireless networks"
    - "aggregation and resource scheduling in machine type communication networks a stochastic geometry approach"
    - "random access analysis for massive iot networks under a new spatio temporal model a stochastic geometry approach"
    - "spatiotemporal stochastic modeling of iot enabled cellular networks scalability and stability analysis"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "massive machine type communication with data aggregation and resource scheduling"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "user centric mobility management in ultra dense cellular networks under spatio temporal dynamics"

Connected through hyperedge HE-2 (induced by source paper "a note on decoding order in optimizing multi cell noma"):
  with members:
    - "a robust machine learning method for cell load approximation in wireless networks"
    - "a framework for optimizing multi cell noma delivering demand with less resource"
    - "resource optimization with load coupling in multi cell noma"
    - "on optimal power allocation for downlink non orthogonal multiple access systems"
    - "energy aware wireless relay selection in load coupled ofdma cellular networks"
    - "load optimization with user association in cooperative and load coupled lte networks"
    - "dynamic user clustering and power allocation for uplink and downlink non orthogonal multiple access noma systems"
    - "elementary properties of positive concave mappings with applications to network planning and optimization"

Connected through hyperedge HE-3 (induced by source paper "stability and metastability of traffic dynamics in uplink random access networks"):
  with members:
    - "self organized scheduling request for uplink 5g networks a d2d clustering approach"
    - "a unified asymptotic analysis of area spectral efficiency in ultradense cellular networks"
    - "spatial birth death wireless networks"
    - "spatiotemporal stochastic modeling of iot enabled cellular networks scalability and stability analysis"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "can p2p networks be super scalable"
    - "a tractable approach to coverage and rate in cellular networks"
    - "asymptotic stability region of slotted aloha"

Connected through hyperedge HE-4 (induced by source paper "effect of spatial and temporal traffic statistics on the performance of wireless networks"):
  with members:
    - "tradeoff between delay and physical layer security in wireless networks"
    - "the meta distribution of the sir for cellular networks with power control"
    - "stable throughput and delay analysis of a random access network with queue aware transmission"
    - "random access analysis for massive iot networks under a new spatio temporal model a stochastic geometry approach"
    - "spatiotemporal stochastic modeling of iot enabled cellular networks scalability and stability analysis"
    - "poisson cluster process based analysis of hetnets with correlated user and base station locations"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "the learning and prediction of application level traffic data in cellular networks"

Connected through hyperedge HE-5 (induced by source paper "tradeoff between delay and physical layer security in wireless networks"):
  with members:
    - "when mmwave communications meet network densification a scalable interference coordination perspective"
    - "secure transmission with large numbers of antennas and finite alphabet inputs"
    - "5g software defined vehicular networks"
    - "toward a tractable delay analysis in ultra dense networks"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "secure massive mimo transmission with an active eavesdropper"
    - "5g ultra dense cellular networks"
    - "cross layer scheduling for ofdma based cognitive radio systems with delay and security constraints"

Connected through hyperedge HE-6 (induced by source paper "resource optimization with load coupling in multi cell noma"):
  with members:
    - "a robust machine learning method for cell load approximation in wireless networks"
    - "a framework for optimizing multi cell noma delivering demand with less resource"
    - "on optimal power allocation for downlink non orthogonal multiple access systems"
    - "energy aware wireless relay selection in load coupled ofdma cellular networks"
    - "sub channel assignment power allocation and user scheduling for non orthogonal multiple access networks"
    - "load optimization with user association in cooperative and load coupled lte networks"
    - "elementary properties of positive concave mappings with applications to network planning and optimization"
    - "power and channel allocation for non orthogonal multiple access in 5g systems tractability and computation"

Connected through hyperedge HE-7 (induced by source paper "capacity and delay tradeoff of secondary cellular networks with spectrum aggregation"):
  with members:
    - "greendelivery proactive content caching and push with energy harvesting based small cells"
    - "the ginibre point process as a model for wireless networks with repulsion"
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"
    - "modeling analysis and design for carrier aggregation in heterogeneous cellular networks"
    - "fundamentals of heterogeneous cellular networks with energy harvesting"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "downlink multi antenna heterogeneous cellular network with load balancing"
    - "analysis of cell load coupling for lte network planning and optimization"

Connected through hyperedge HE-8 (induced by source paper "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"):
  with members:
    - "the meta distribution of the sir in poisson bipolar and cellular networks"
    - "user mobility evaluation for 5g small cell networks based on individual mobility model"
    - "5g ultra dense cellular networks"
    - "managing interference correlation through random medium access"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "what will 5g be"
    - "multi channel hybrid access femtocells a stochastic geometric analysis"
    - "offloading in heterogeneous networks modeling analysis and design insights"

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)