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: "load backhaul aware decoupled downlink uplink access in 5g systems"
  Abstract: Until the 4th Generation (4G) cellular 3GPP systems, a user equipment's (UE) cell association has been based on the downlink received power from the strongest base station. Recent work has shown that - with an increasing degree of heterogeneity in emerging 5G systems - such an approach is dramatically suboptimal, advocating for an independent association of the downlink and uplink where the downlink is served by the macro cell and the uplink by the nearest small cell. In this paper, we advance prior art by explicitly considering the cell-load as well as the available backhaul capacity during the association process. We introduce a novel association algorithm and prove its superiority w.r.t. prior art by means of simulations that are based on Vodafone's small cell trial network and employing a high resolution pathloss prediction and realistic user distributions. We also study the effect that different power control settings have on the performance of our algorithm.

Connected through hyperedge HE-1 (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"
    - "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"
    - "what will 5g be"
    - "massive mimo meets hetnet interference coordination through spatial blanking"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "massive mimo and small cells improving energy efficiency by optimal soft cell coordination"

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"
    - "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "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 "decoupled uplink and downlink in a wireless system with buffer aided relaying"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "achievable rates for the fading half duplex single relay selection network using buffer aided relaying"
    - "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"
    - "buffer aided relaying with adaptive link selection"
    - "five disruptive technology directions for 5g"
    - "physical network coding in two way wireless relay channels"

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"
    - "capacity analysis of decoupled downlink and uplink access in 5g heterogeneous systems"
    - "five disruptive technology directions for 5g"

Connected through hyperedge HE-5 (induced by source paper "flexible dual connectivity spectrum aggregation for decoupled uplink and downlink access in 5g heterogeneous systems"):
  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"
    - "analytical modeling of uplink cellular networks"

Connected through hyperedge HE-6 (induced by source paper "a survey on 5g the next generation of mobile communication"):
  with members:
    - "effective rat selection approach for 5g dense wireless networks"
    - "on detecting termination in cognitive radio networks"
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "5g wireless backhaul networks challenges and research advances"
    - "a survey on device to device communication in cellular networks"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "scma for downlink multiple access of 5g wireless networks"
    - "uplink contention based scma for 5g radio access"

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)