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: "unlicensed lte wifi coexistence is lbt inherently fairer than csat"
  Abstract: Ensuring fair co-existence between unlicensed LTE and WiFi networks is currently of major concern to both cellular operators and WiFi providers. Two main unlicensed LTE approaches currently being discussed, namely Carrier Sense Adaptive Transmission (CSAT) and Listen Before Talk (LBT). While these mechanisms differ in their compatibility with existing LTE specifications and regulatory compliance in different countries, they also use fundamentally different approaches to access the channel. Nevertheless, we show in this article that when optimally configured both approaches are capable of providing the same level of fairness to WiFi and that the choice between CSAT and LBT is solely driven by the LTE operator's interests.

Connected through hyperedge HE-1 (induced by source paper "impact of lte s periodic interference on heterogeneous wi fi transmissions"):
  with members:
    - "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"
    - "wi fi coexistence with duty cycled lte u"

Connected through hyperedge HE-2 (induced by source paper "wireless optimisation via convex bandits unlicensed lte wifi coexistence"):
  with members:
    - "introduction to online convex optimization"
    - "distributed user association in energy harvesting small cell networks a probabilistic bandit model"
    - "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"
    - "multi armed bandits with application to 5g small cells"
    - "kernel based methods for bandit convex optimization"
    - "an optimal algorithm for bandit convex optimization"
    - "analysis and optimization of caching and multicasting in large scale cache enabled heterogeneous wireless networks"
    - "combinatorial bandits revisited"

Connected through hyperedge HE-3 (induced by source paper "new radio beam based access to unlicensed spectrum design challenges and solutions"):
  with members:
    - "an e2e simulator for 5g nr networks"
    - "a tutorial on beam management for 3gpp nr at mmwave frequencies"
    - "consensus before talk distributed dynamic spectrum access via distributed spectrum ledger technology"
    - "ieee 802 11ay based mmwave wlans design challenges and solutions"
    - "listen before receive for coexistence in unlicensed mmwave bands"
    - "modeling and analyzing millimeter wave cellular systems"
    - "extending lte into the unlicensed spectrum technical analysis of the proposed variants"
    - "massive mimo unlicensed a new approach to dynamic spectrum access"

Connected through hyperedge HE-4 (induced by source paper "orla olaa orthogonal coexistence of laa and wifi in unlicensed spectrum"):
  with members:
    - "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"
    - "random access preamble design and detection for 3gpp narrowband iot systems"
    - "srslte an open source platform for lte evolution and experimentation"
    - "small cell traffic balancing over licensed and unlicensed bands"
    - "rigorous and practical proportional fair allocation for multi rate wi fi"
    - "control theoretic optimization of 802 11 wlans implementation and experimental evaluation"

Connected through hyperedge HE-5 (induced by source paper "analysis of csat performance in wi fi and lte u coexistence"):
  with members:
    - "embedding lte u within wi fi bands for spectrum efficiency improvement"
    - "modeling and analyzing the coexistence of wi fi and lte in unlicensed spectrum"
    - "coordinated dynamic spectrum management of lte u and wi fi networks"

Connected through hyperedge HE-6 (induced by source paper "survey of spectrum sharing for inter technology coexistence"):
  with members:
    - "network slicing based 5g and future mobile networks mobility resource management and challenges"
    - "grant free radio access iot networks scalability analysis in coexistence scenarios"
    - "inter technology coexistence in a spectrum commons a case study of wi fi and lte in the 5 ghz unlicensed band"
    - "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"
    - "ieee 802 11ax high efficiency wlans"
    - "embedding lte u within wi fi bands for spectrum efficiency improvement"
    - "mu mimo mac protocols for wireless local area networks a survey"
    - "modeling and analyzing the coexistence of wi fi and lte in unlicensed spectrum"

Connected through hyperedge HE-7 (induced by source paper "d2d u device to device communications in unlicensed bands for 5g and beyond"):
  with members:
    - "sub channel assignment power allocation and user scheduling for non orthogonal multiple access networks"
    - "radio resource allocation for device to device underlay communication using hypergraph theory"
    - "context aware small cell networks how social metrics improve wireless resource allocation"
    - "an energy efficient mac protocol for fully connected wireless ad hoc networks"
    - "efficiency resource allocation for device to device underlay communication systems a reverse iterative combinatorial auction based approach"

Connected through hyperedge HE-8 (induced by source paper "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"):
  with members:
    - "srslte an open source platform for lte evolution and experimentation"
    - "small cell traffic balancing over licensed and unlicensed bands"
    - "rigorous and practical proportional fair allocation for multi rate wi fi"
    - "convexity conditions for 802 11 wlans"

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)