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: "optimal cell load and throughput in green small cell networks with generalized cell association"
  Abstract: This paper thoroughly explored the fundamental interactions between cell association, cell load and throughput in a green (energy-efficient) small cell network in which all base stations form a homogeneous Poisson point process (PPP) of intensity $\lambda_B$ and all users form another independent PPP of intensity $\lambda_U$. Cell voidness, usually disregarded due to rarity in cellular network modeling, is first theoretically analyzed under generalized (channel-aware) cell association (GCA). We showed that the void cell probability cannot be neglected any more since it is bounded above by $\exp(-\lambda_U/\lambda_B)$ that is typically not small in a small cell network. The accurate expression of the void cell probability for GCA was characterized and it was used to derive the average cell and user throughputs. We learned that cell association and cell load $\lambda_U/\lambda_B$ significantly affect these two throughputs. According to the average cell and user throughputs, the green cell and user throughputs are defined respectively to reflect whether the energy of a base station is efficiently used to transmit information or not. In order to achieve satisfactory throughput with certain level of greenness, cell load should be properly determined. We presented the theoretical solutions of the optimal cell loads that maximize the green cell and user throughputs, respectively, and verified their correctness by simulation.

Connected through hyperedge HE-1 (induced by source paper "mmwave uav networks with multi cell association performance limit and optimization"):
  with members:
    - "cellular connectivity for uavs network modeling performance analysis and design guidelines"
    - "survey on uav cellular communications practical aspects standardization advancements regulation and security challenges"
    - "wireless communication using unmanned aerial vehicles uavs optimal transport theory for hover time optimization"
    - "fast deployment of uav networks for optimal wireless coverage"
    - "coverage rate tradeoff analysis in mmwave heterogeneous cellular networks"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "traffic management for heterogeneous networks with opportunistic unlicensed spectrum sharing"
    - "enabling uav cellular with millimeter wave communication potentials and approaches"

Connected through hyperedge HE-2 (induced by source paper "ultra reliable and low latency communications using proactive multi cell association"):
  with members:
    - "wireless channel dynamics and robustness for ultra reliable low latency communications"
    - "resource allocation and harq optimization for urllc traffic in 5g wireless networks"
    - "reliable transmission of short packets through queues and noisy channels under latency and peak age violation guarantees"
    - "energy latency tradeoff in ultra reliable low latency communication with retransmissions"
    - "joint uplink and downlink resource configuration for ultra reliable and low latency communications"
    - "a statistical learning approach to ultra reliable low latency communication"
    - "heterogeneous networks with power domain noma coverage throughput and power allocation analysis"
    - "cross layer optimization for ultra reliable and low latency radio access networks"

Connected through hyperedge HE-3 (induced by source paper "fundamentals of simultaneous wireless information and power transmission in heterogeneous networks a cell load perspective"):
  with members:
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "wireless power transfer in massive mimo aided hetnets with user association"
    - "fundamentals of the downlink green coverage and energy efficiency in heterogeneous networks"
    - "traffic management for heterogeneous networks with opportunistic unlicensed spectrum sharing"
    - "on the limits of coexisting coverage and capacity in multi rat heterogeneous networks"
    - "random cell association and void probability in poisson distributed cellular networks"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "simultaneous information and energy transfer in large scale networks with without relaying"

Connected through hyperedge HE-4 (induced by source paper "unified analytical volume distribution of poisson delaunay simplex and its application to coordinated multi point transmission"):
  with members:
    - "downlink coordinated joint transmission for mutual information accumulation"
    - "optimal dynamic point selection for power minimization in multiuser downlink comp"
    - "random cell association and void probability in poisson distributed cellular networks"
    - "deploying dense networks for maximal energy efficiency small cells meet massive mimo"
    - "spectral efficiency scaling laws in dense random wireless networks with multiple receive antennas"
    - "what will 5g be"
    - "worst case user analysis in poisson voronoi cells"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-5 (induced by source paper "dense small cell networks from noise limited to dense interference limited"):
  with members:
    - "on the energy efficient deployment for ultra dense heterogeneous networks with nlos and los transmissions"
    - "effect of densification on cellular network performance with bounded pathloss model"
    - "performance limits of network densification"
    - "impact of los nlos propagation and path loss in ultra dense cellular networks"
    - "coverage analysis of heterogeneous cellular networks in urban areas"
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"
    - "performance impact of idle mode capability on dense small cell networks"
    - "performance impact of los and nlos transmissions in dense cellular networks"

Connected through hyperedge HE-6 (induced by source paper "coverage rate tradeoff in mmwave heterogeneous networks with generalized user association"):
  with members:
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "user association in 5g networks a survey and an outlook"
    - "physical layer security in millimeter wave cellular networks"
    - "gains of restricted secondary licensing in millimeter wave cellular systems"
    - "stochastic geometry modeling and performance evaluation of mmwave cellular communications"
    - "on the feasibility of sharing spectrum licenses in mmwave cellular systems"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"
    - "coverage and rate analysis for millimeter wave cellular networks"

Connected through hyperedge HE-7 (induced by source paper "full duplex heterogeneous networks with decoupled user association rate analysis and traffic scheduling"):
  with members:
    - "user selection and power allocation in full duplex multicell networks"
    - "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"
    - "optimal joint power and subcarrier allocation for full duplex multicarrier non orthogonal multiple access systems"
    - "fundamentals of the downlink green coverage and energy efficiency in heterogeneous networks"
    - "traffic management for heterogeneous networks with opportunistic unlicensed spectrum sharing"
    - "full duplex mimo small cell networks with interference cancellation"
    - "on the limits of coexisting coverage and capacity in multi rat heterogeneous networks"
    - "random cell association and void probability in poisson distributed cellular networks"

Connected through hyperedge HE-8 (induced by source paper "coverage rate tradeoff analysis in mmwave heterogeneous cellular networks"):
  with members:
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "user association in 5g networks a survey and an outlook"
    - "physical layer security in millimeter wave cellular networks"
    - "gains of restricted secondary licensing in millimeter wave cellular systems"
    - "fundamentals of the downlink green coverage and energy efficiency in heterogeneous networks"
    - "stochastic geometry modeling and performance evaluation of mmwave cellular communications"
    - "on the feasibility of sharing spectrum licenses in mmwave cellular systems"
    - "tractable model for rate in self backhauled millimeter wave 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)