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: "full duplex operation for small cells"
  Abstract: Full duplex (FD) communications has the potential to double the capacity of a half duplex (HD) system at the link level. However, FD operation increases the aggregate interference on each communication link, which limits the capacity improvement. In this paper, we investigate how much of the potential doubling can be practically achieved in the resource-managed, small multi-cellular system, similar to the TDD variant of LTE, both in indoor and outdoor environments, assuming FD base stations (BSs) and HD user equipment (UEs). We focus on low-powered small cellular systems, because they are more suitable for FD operation given practical self-interference cancellation limits. A joint UE selection and power allocation method for a multi-cell scenario is presented, where a hybrid scheduling policy assigns FD timeslots when it provides a throughput advantage by pairing UEs with appropriate power levels to mitigate the mutual interference, but otherwise defaults to HD operation. Due to the complexity of finding the globally optimum solution of the proposed algorithm, a sub-optimal method based on a heuristic greedy algorithm for UE selection, and a novel solution using geometric programming for power allocation, is proposed. With practical self-interference cancellation, antennas and circuits, it is shown that the proposed hybrid FD system achieves as much as 94% throughput improvement in the downlink, and 92% in the uplink, compared to a HD system in an indoor multi-cell scenario and 54% in downlink and 61% in uplink in an outdoor multi-cell scenario. Further, we also compare the energy efficiency of FD operation.

Connected through hyperedge HE-1 (induced by source paper "user selection and power allocation in full duplex multicell networks"):
  with members:
    - "throughput and coverage for a mixed full and half duplex small cell network"
    - "leveraging one hop information in massive mimo full duplex wireless systems"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "full duplex cloud radio access networks an information theoretic viewpoint"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "simultaneous transmission and reception algorithm design and system level performance"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-2 (induced by source paper "hybrid duplex switching in heterogeneous networks"):
  with members:
    - "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"
    - "secure routing in multihop wireless ad hoc networks with decode and forward relaying"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"
    - "full duplex radio for uplink downlink transmission with spatial randomness"
    - "outage analysis of full duplex architectures in cellular networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-3 (induced by source paper "throughput and coverage for a mixed full and half duplex small cell network"):
  with members:
    - "in band full duplex communications for cellular networks with partial uplink downlink overlap"
    - "throughput analysis for wireless networks with full duplex radios"
    - "hybrid full half duplex system analysis in heterogeneous wireless networks"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "in band full duplex wireless challenges and opportunities"
    - "analytical modeling of uplink cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

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)