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: "downlink coverage analysis in a heterogeneous cellular network"
  Abstract: In this paper, we consider the downlink signal-to-interference-plus-noise ratio (SINR) analysis in a heterogeneous cellular network with K tiers. Each tier is characterized by a base-station (BS) arrangement according to a homogeneous Poisson point process with certain BS density, transmission power, random shadow fading factors with arbitrary distribution, arbitrary path-loss exponent and a certain bias towards admitting the mobile-station (MS). The MS associates with the BS that has the maximum instantaneous biased received power under the open access cell association scheme. For such a general setting, we provide an analytical characterization of the coverage probability at the MS.

Connected through hyperedge HE-1 (induced by source paper "dynamic model for network selection in next generation hetnets with memory affecting rational users"):
  with members:
    - "a learning based coexistence mechanism for laa lte based hetnets"
    - "energy minimization for wireless communication with rotary wing uav"
    - "blocking probability and spatial throughput characterization for cellular enabled uav network with directional antenna"
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "green 5g heterogeneous networks through dynamic small cell operation"
    - "physical layer security in millimeter wave cellular networks"
    - "5g ultra dense cellular networks"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"

Connected through hyperedge HE-2 (induced by source paper "bandwidth partitioning and downlink analysis in mmwave integrated access and backhaul for 5g"):
  with members:
    - "modeling and analyzing millimeter wave cellular systems"
    - "integrated mmwave access and backhaul in 5g bandwidth partitioning and downlink analysis"
    - "directional cell search delay analysis for cellular networks with static users"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "joint backhaul access analysis of full duplex self backhauling heterogeneous networks"
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "enriched k tier hetnet model to enable the analysis of user centric small cell deployments"
    - "analysis of massive mimo enabled downlink wireless backhauling for full duplex small cells"

Connected through hyperedge HE-3 (induced by source paper "base station cooperation in millimeter wave cellular networks performance enhancement of cell edge users"):
  with members:
    - "design and analysis of initial access in millimeter wave cellular networks"
    - "performance analysis of outdoor mmwave ad hoc networks"
    - "physical layer security in millimeter wave cellular networks"
    - "multi antenna transmission in downlink heterogeneous cellular networks under a threshold based mobile association policy"
    - "poisson hole process theory and applications to wireless networks"
    - "coverage in heterogeneous downlink millimeter wave cellular networks"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "a tractable model for noncoherent joint transmission base station cooperation"

Connected through hyperedge HE-4 (induced by source paper "stochastic geometry analysis of ultra dense networks impact of antenna height and performance limits"):
  with members:
    - "the major and minor factors in the performance analysis of ultra dense networks"
    - "on the performance of practical ultra dense networks the major and minor factors"
    - "performance impact of base station antenna heights in dense cellular networks"
    - "coverage and capacity scaling laws in downlink ultra dense cellular networks"
    - "please lower small cell antenna heights in 5g"
    - "performance impact of los and nlos transmissions in dense cellular networks"
    - "are we approaching the fundamental limits of wireless network densification"
    - "sinr and throughput scaling in ultradense urban cellular networks"

Connected through hyperedge HE-5 (induced by source paper "coverage analysis in downlink poisson cellular network with kappa mu shadowed fading"):
  with members:
    - "modeling cellular networks in fading environments with dominant specular components"
    - "the mean interference to signal ratio and its key role in cellular and amorphous networks"
    - "statistical characterization of kappa mu shadowed fading"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-6 (induced by source paper "downlink coverage probability in a cellular network with ginibre deployed base stations and nakagami m fading channels"):
  with members:
    - "statistical modeling and probabilistic analysis of cellular networks with determinantal point processes"
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "large deviations of the interference in the ginibre network model"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-7 (induced by source paper "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"):
  with members:
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "asymptotic deployment gain a simple approach to characterize the sinr distribution in general cellular networks"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "on association cells in random heterogeneous networks"
    - "joint resource partitioning and offloading in heterogeneous cellular networks"

Connected through hyperedge HE-8 (induced by source paper "wireless networks appear poissonian due to strong shadowing"):
  with members:
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "studying the sinr process of the typical user in poisson networks by using its factorial moment measures"
    - "statistical modeling and probabilistic analysis of cellular networks with determinantal point processes"
    - "the ginibre point process as a model for wireless networks with repulsion"
    - "analysis of non coherent joint transmission cooperation in heterogeneous cellular networks"
    - "successive interference cancellation in heterogeneous cellular networks"
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "equivalence and comparison of heterogeneous cellular networks"

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.IT(Information Theory)