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: "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
  Abstract: Our traditional notion of a cell is changing dramatically given the increasing degree of heterogeneity in 4G and emerging 5G systems. Rather than belonging to a specific cell, a device would choose the most suitable connection from the plethora of connections available. In such a setting, given the transmission powers differ significantly between downlink (DL) and uplink (UL), a wireless device that sees multiple Base Stations (BSs) may access the infrastructure in a way that it receives the downlink (DL) traffic from one BS and sends uplink (UL) traffic through another BS. This situation is referred to as Downlink and Uplink Decoupling (DUDe). In this paper, the capacity and throughput gains brought by decoupling are rigorously derived using stochastic geometry. Theoretical findings are then corroborated by means of simulation results. A further constituent of this paper is the verification of the theoretically derived results by means of a real-world system simulation platform. Despite theoretical assumptions differing from the very complete system simulator, the trends in the association probabilities and capacity gains are similar. Based on the promising results, we then outline architectural changes needed to facilitate the decoupling of DL and UL.

Connected through hyperedge HE-1 (induced by source paper "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"):
  with members:
    - "a comparison study of coupled and decoupled uplink heterogeneous cellular networks"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "analysis and optimization of inter tier interference coordination in downlink multi antenna hetnets with offloading"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "throughput and energy efficiency analysis of small cell networks with multi antenna base stations"

Connected through hyperedge HE-2 (induced by source paper "uplink spectral efficiency analysis of decoupled access in multiuser mimo communications"):
  with members:
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "load backhaul aware decoupled downlink uplink access in 5g systems"
    - "five disruptive technology directions for 5g"
    - "analytical modeling of uplink cellular networks"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-3 (induced by source paper "analysis of downlink and uplink decoupling in dense cellular networks"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "towards 1 gbps ue in cellular systems understanding ultra dense small cell deployments"
    - "5g ultra dense cellular networks"
    - "partially distributed resource allocation in small cell networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "five disruptive technology directions for 5g"
    - "analysis of blockage effects on urban cellular networks"

Connected through hyperedge HE-4 (induced by source paper "dynamic joint uplink and downlink optimization for uplink and downlink decoupling enabled 5g heterogeneous networks"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "power and load coupling in cellular networks for energy optimization"
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "load backhaul aware decoupled downlink uplink access in 5g systems"
    - "five disruptive technology directions for 5g"

Connected through hyperedge HE-5 (induced by source paper "a comparison study of coupled and decoupled uplink heterogeneous cellular networks"):
  with members:
    - "efficiency analysis of decoupled downlink and uplink access in heterogeneous networks"
    - "energy efficiency of cross tier base station cooperation in heterogeneous cellular networks"
    - "analytical modeling of uplink cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"

Connected through hyperedge HE-6 (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"
    - "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"
    - "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)