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: "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
  Abstract: Wireless cellular networks evolve towards a heterogeneous infrastructure, featuring multiple types of Base Stations (BSs), such as Femto BSs (FBSs) and Macro BSs (MBSs). A wireless device observes multiple points (BSs) through which it can access the infrastructure and it may choose to receive the downlink (DL) traffic from one BS and send uplink (UL) traffic through another BS. Such a situation is referred to as   decoupled DL/UL access  . Using the framework of stochastic geometry, we derive the association probability for DL/UL. To maximize the average received power, as the relative density of FBSs initially increases, a large fraction of devices chooses decoupled access, i.e., receive from a MBS in DL and transmit through a FBS in UL. We analyze the impact that this type of association has on the average throughput in the system.

Connected through hyperedge HE-1 (induced by source paper "dynamic time frequency division duplex"):
  with members:
    - "user selection and power allocation in full duplex multicell networks"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "interference spins scheduling of multiple interfering two way wireless links"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "on the spectral efficiency of full duplex small cell wireless systems"

Connected through hyperedge HE-2 (induced by source paper "a queueing approach to the latency of decoupled ul dl with flexible tdd and asymmetric services"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "interference spins scheduling of multiple interfering two way wireless links"

Connected through hyperedge HE-3 (induced by source paper "a data aided channel estimation scheme for decoupled systems in heterogeneous networks"):
  with members:
    - "performance impact of los and nlos transmissions in dense cellular networks"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "what will 5g be"
    - "massive mimo meets hetnet interference coordination through spatial blanking"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "load backhaul aware decoupled downlink uplink access in 5g systems"
    - "massive mimo and small cells improving energy efficiency by optimal soft cell coordination"

Connected through hyperedge HE-4 (induced by source paper "achieving low latency mobile edge computing by uplink and downlink decoupled access in hetnets"):
  with members:
    - "a primer on cellular network analysis using stochastic geometry"
    - "joint uplink downlink optimization for backhaul limited mobile cloud computing with user scheduling"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"

Connected through hyperedge HE-5 (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"
    - "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"
    - "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
    - "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-6 (induced by source paper "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"):
  with members:
    - "tractable resource management with uplink decoupled millimeter wave overlay in ultra dense cellular networks"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "millimeter wave cellular networks a mac layer perspective"
    - "on the joint impact of beamwidth and orientation error on throughput in directional wireless poisson networks"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"

Connected through hyperedge HE-7 (induced by source paper "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"):
  with members:
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular 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"
    - "multi user coverage probability of uplink cellular systems a stochastic geometry approach"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "on association cells in random heterogeneous networks"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"

Connected through hyperedge HE-8 (induced by source paper "uplink spectral efficiency analysis of decoupled access in multiuser mimo communications"):
  with members:
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
    - "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"

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)