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 model of the ieee 802 11 dcf in presence of non ideal transmission channel and capture effects"
  Abstract: In this paper, we provide a throughput analysis of the IEEE 802.11 protocol at the data link layer in non- saturated traffic conditions taking into account the impact of both transmission channel and capture effects in Rayleigh fading environment. Impacts of both non-ideal channel and capture become important in terms of the actual observed throughput in typical network conditions whereby traffic is mainly unsaturated, specially in an environment of high interference. We extend the multi-dimensional Markovian state transition model characterizing the behavior at the MAC layer by including transmission states that account for packet transmission failures due to errors caused by propagation through the channel, along with a state characterizing the system when there are no packets to be transmitted in the buffer of a station.

Connected through hyperedge HE-1 (induced by source paper "a novel proportional fairness criterion for throughput allocation in multirate ieee 802 11"):
  with members:
    - "modelling and analysis of the distributed coordination function of ieee 802 11 with multirate capability"
    - "saturation throughput analysis of ieee 802 11 in the presence of non ideal transmission channel and capture effects"
    - "on the linear behaviour of the throughput of ieee 802 11 dcf in non saturated conditions"
    - "a quantitative measure of fairness and discrimination for resource allocation in shared computer systems"

Connected through hyperedge HE-2 (induced by source paper "modelling and analysis of the distributed coordination function of ieee 802 11 with multirate capability"):
  with members:
    - "saturation throughput analysis of ieee 802 11 in the presence of non ideal transmission channel and capture effects"
    - "on the linear behaviour of the throughput of ieee 802 11 dcf in non saturated conditions"

Connected through hyperedge HE-3 (induced by source paper "on the optimization of the ieee 802 11 dcf a cross layer perspective"):
  with members:
    - "saturation throughput analysis of ieee 802 11 in the presence of non ideal transmission channel and capture effects"
    - "on the linear behaviour of the throughput of ieee 802 11 dcf in non saturated conditions"

Connected through hyperedge HE-4 (induced by source paper "on the behavior of the distributed coordination function of ieee 802 11 with multirate capability under general transmission conditions"):
  with members:
    - "saturation throughput analysis of ieee 802 11 in the presence of non ideal transmission channel and capture effects"

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)