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: "a traffic load balancing framework for software defined radio access networks powered by hybrid energy sources"
  Abstract: Dramatic mobile data traffic growth has spurred a dense deployment of small cell base stations (SCBSs). Small cells enhance the spectrum efficiency and thus enlarge the capacity of mobile networks. Although SCBSs consume much less power than macro BSs (MBSs) do, the overall power consumption of a large number of SCBSs is phenomenal. As the energy harvesting technology advances, base stations (BSs) can be powered by green energy to alleviate the on-grid power consumption. For mobile networks with high BS density, traffic load balancing is critical in order to exploit the capacity of SCBSs. To fully utilize harvested energy, it is desirable to incorporate the green energy utilization as a performance metric in traffic load balancing strategies. In this paper, we have proposed a traffic load balancing framework that strives a balance between network utilities, e.g., the average traffic delivery latency, and the green energy utilization. Various properties of the proposed framework have been derived. Leveraging the software-defined radio access network architecture, the proposed scheme is implemented as a virtually distributed algorithm, which significantly reduces the communication overheads between users and BSs. The simulation results show that the proposed traffic load balancing framework enables an adjustable trade-off between the on-grid power consumption and the average traffic delivery latency, and saves a considerable amount of on-grid power, e.g., 30%, at a cost of only a small increase, e.g., 8%, of the average traffic delivery latency.

Connected through hyperedge HE-1 (induced by source paper "software defined radios architecture state of the art and challenges"):
  with members:
    - "hardware accelerated sdr platform for adaptive air interfaces"
    - "network function virtualization state of the art and research challenges"
    - "software defined radio architecture survey for cognitive testbeds"

Connected through hyperedge HE-2 (induced by source paper "a hybrid rf vlc system for energy efficient wireless access"):
  with members:
    - "multi connectivity in 5g mmwave cellular networks"
    - "joint link scheduling and brightness control for greening vlc based indoor access networks"

Connected through hyperedge HE-3 (induced by source paper "backhaul aware user association and resource allocation for energy constrained hetnets"):
  with members:
    - "joint downlink cell association and bandwidth allocation for wireless backhauling in two tier hetnets with large scale antenna arrays"
    - "energy harvesting wireless communications a review of recent advances"
    - "5g wireless backhaul networks challenges and research advances"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "unified and distributed qos driven cell association algorithms in heterogeneous networks"
    - "distributed resource allocation for relay aided device to device communication a message passing approach"
    - "what will 5g be"

Connected through hyperedge HE-4 (induced by source paper "distributed user association in energy harvesting small cell networks a probabilistic bandit model"):
  with members:
    - "multi armed bandits with application to 5g small cells"
    - "user association in 5g networks a survey and an outlook"
    - "multi access communications with energy harvesting a multi armed bandit model and the optimality of the myopic policy"
    - "cooperative interference mitigation and handover management for heterogeneous cloud small cell networks"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"
    - "channel selection for network assisted d2d communication via no regret bandit learning with calibrated forecasting"
    - "a context aware matching game for user association in wireless small cell networks"
    - "matching theory for priority based cell association in the downlink of wireless small cell networks"

Connected through hyperedge HE-5 (induced by source paper "distributed user association in energy harvesting small cell networks an exchange economy with uncertainty"):
  with members:
    - "distributed user association in energy harvesting small cell networks a probabilistic bandit model"
    - "distributed user association in energy harvesting dense small cell networks a mean field multi armed bandit approach"
    - "user association in 5g networks a survey and an outlook"
    - "cooperative interference mitigation and handover management for heterogeneous cloud small cell networks"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"
    - "distributed channel assignment in cognitive radio networks stable matching and walrasian equilibrium"
    - "a context aware matching game for user association in wireless small cell networks"
    - "matching theory for priority based cell association in the downlink of wireless small cell networks"

Connected through hyperedge HE-6 (induced by source paper "online learning for offloading and autoscaling in energy harvesting mobile edge computing"):
  with members:
    - "a survey on mobile edge computing the communication perspective"
    - "socially trusted collaborative edge computing in ultra dense networks"
    - "dynamic computation offloading for mobile edge computing with energy harvesting devices"
    - "online learning for offloading and autoscaling in renewable powered mobile edge computing"
    - "energy harvesting wireless communications a review of recent advances"

Connected through hyperedge HE-7 (induced by source paper "latency aware drone base station placement in heterogeneous networks"):
  with members:
    - "mobile edge computing empowers internet of things"
    - "uav assisted heterogeneous networks for capacity enhancement"
    - "wireless communications with unmanned aerial vehicles opportunities and challenges"

Connected through hyperedge HE-8 (induced by source paper "power availability aware cell association for energy harvesting small cell base stations"):
  with members:
    - "distributed user association in energy harvesting small cell networks an exchange economy with uncertainty"
    - "distributed user association in energy harvesting small cell networks a probabilistic bandit model"
    - "distributed multi relay selection in accumulate then forward energy harvesting relay networks"
    - "user association in 5g networks a survey and an outlook"
    - "online ski rental for on off scheduling of energy harvesting base stations"
    - "a survey of energy efficient techniques for 5g networks and challenges ahead"
    - "ambient rf energy harvesting in ultra dense small cell networks performance and trade offs"
    - "millimeter wave energy harvesting"

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)