human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "exploring the performance boundaries of nb iot"):
  Abstract: NB-IoT has just jonied the LPWAN community. Unlike most of its competitors, NB-IoT was not really born from a clean sheet. Indeed, it is tightly connected with LTE, from which it inherits many of its features that undoubtedly conditions its behavior. In this paper, we empirically explore the boundaries of this technology, analyzing critical characteristics, from a user's point of view, such as energy consumption, reliability and delays. The results show that its performance in terms of energy is comparable, even outperforming on average a LPWAN reference technology such as LoRa, with the added benefit of guaranteed delivery. However, the high variability observed in both energy expenditure and network delays call into question its suitability for some applications, especially those subject to service-level agreements.

Includes members:
  Member "analytic analysis of narrowband iot coverage enhancement approaches":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "evaluation modeling and optimization of coverage enhancement methods of nb iot")
  Member "narrowband iot data transmission procedures for massive machine type communications":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "analysis of non pilot interference on link adaptation and latency in cellular networks")
  Member "evaluating the performance of emtc and nb iot for smart city applications":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "3d multi drone cell trajectory design for efficient iot data collection")
  Member "low power wide area networks an overview":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "random access based reliable uplink communication and power transfer using dynamic power splitting")

Question: Please tell me which class the source paper 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)