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: "delay aware bs discontinuous transmission control and user scheduling for energy harvesting downlink coordinated mimo systems"
  Abstract: In this paper, we propose a two-timescale delay-optimal base station discontinuous transmission (BS-DTX) control and user scheduling for downlink coordinated MIMO systems with energy harvesting capability. To reduce the complexity and signaling overhead in practical systems, the BS-DTX control is adaptive to both the energy state information (ESI) and the data queue state information (QSI) over a longer timescale. The user scheduling is adaptive to the ESI, the QSI and the channel state information (CSI) over a shorter timescale. We show that the two-timescale delay-optimal control problem can be modeled as an infinite horizon average cost partially observed Markov decision problem (POMDP), which is well known to be a difficult problem in general. By using sample-path analysis and exploiting specific problem structure, we first obtain some structural results on the optimal control policy and derive an equivalent Bellman equation with reduced state space. To reduce the complexity and facilitate distributed implementation, we obtain a delay-aware distributed solution with the BS-DTX control at the BS controller (BSC) and the user scheduling at each cluster manager (CM) using approximate dynamic programming and distributed stochastic learning. We show that the proposed distributed two-timescale algorithm converges almost surely. Furthermore, using queueing theory, stochastic geometry, and optimization techniques, we derive sufficient conditions for the data queues to be stable in the coordinated MIMO network and discuss various design insights.

Connected through hyperedge HE-1 (induced by source paper "minimum age of information in the internet of things with non uniform status packet sizes"):
  with members:
    - "average peak age of information minimization in uav assisted iot networks"
    - "age optimal transmission of rateless codes in an erasure channel"
    - "beyond 5g with uavs foundations of a 3d wireless cellular network"
    - "a reinforcement learning approach to age of information in multi user networks"
    - "can decentralized status update achieve universally near optimal age of information in wireless multiaccess channels"
    - "sampling for data freshness optimization non linear age functions"
    - "controlling packet drops to improve freshness of information"
    - "joint status sampling and updating for minimizing age of information in the internet of things"

Connected through hyperedge HE-2 (induced by source paper "joint content delivery and caching placement via dynamic programming"):
  with members:
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "wireless device to device caching networks basic principles and system performance"
    - "analysis and optimization of caching and multicasting in large scale cache enabled heterogeneous wireless networks"
    - "caching placement in stochastic wireless caching helper networks channel selection diversity via caching"
    - "analysis on cache enabled wireless heterogeneous networks"
    - "optimal dynamic multicast scheduling for cache enabled content centric wireless networks"
    - "cache enabled small cell networks modeling and tradeoffs"
    - "mixed timescale precoding and cache control in cached mimo interference network"

Connected through hyperedge HE-3 (induced by source paper "fundamental green tradeoffs progresses challenges and impacts on 5g networks"):
  with members:
    - "spectrum power trading for energy efficient small cell"
    - "power efficient resource allocation for full duplex radio distributed antenna networks"
    - "energy recycling full duplex radios for next generation networks"
    - "energy efficient resource allocation for wireless powered communication networks"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "hybrid millimeter wave systems a novel paradigm for hetnets"
    - "coexistence of wi fi and heterogeneous small cell networks sharing unlicensed spectrum"
    - "on the spectral efficiency of full duplex small cell wireless systems"

Connected through hyperedge HE-4 (induced by source paper "joint pushing and caching for bandwidth utilization maximization in wireless networks"):
  with members:
    - "policy optimization for content push via energy harvesting small cells in heterogeneous networks"
    - "stochastic content centric multicast scheduling for cache enabled heterogeneous cellular networks"
    - "wireless caching technical misconceptions and business barriers"
    - "wireless content caching for small cell and d2d networks"
    - "analysis and optimization of caching and multicasting in large scale cache enabled heterogeneous wireless networks"
    - "analysis and optimization of caching and multicasting in large scale cache enabled wireless networks"
    - "multicast aware caching for small cell networks"
    - "cache enabled small cell networks modeling and tradeoffs"

Connected through hyperedge HE-5 (induced by source paper "stochastic content centric multicast scheduling for cache enabled heterogeneous cellular networks"):
  with members:
    - "wireless caching technical misconceptions and business barriers"
    - "coded retransmission in wireless networks via abstract mdps theory and algorithms"
    - "analysis on cache enabled wireless heterogeneous networks"
    - "optimal dynamic multicast scheduling for cache enabled content centric wireless networks"
    - "cache aided interference channels"
    - "coded caching for delay sensitive content"
    - "capacity and stable scheduling in heterogeneous wireless networks"
    - "multicast aware caching for small cell networks"

Connected through hyperedge HE-6 (induced by source paper "online energy efficient packet scheduling for a common deadline with and without energy harvesting"):
  with members:
    - "online independent set beyond the worst case secretaries prophets and periods"
    - "optimal power allocation for energy harvesting and power grid coexisting wireless communication systems"
    - "competitive ratio analysis of online algorithms to minimize data transmission time in energy harvesting communication system"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "optimal packet scheduling on an energy harvesting broadcast link"
    - "energy optimal transmission scheduling in wireless sensor networks"
    - "optimal packet scheduling in an energy harvesting communication system"
    - "asymptotically optimal policies for hard deadline scheduling over fading channels"

Connected through hyperedge HE-7 (induced by source paper "comp meets smart grid a new communication and energy cooperation paradigm"):
  with members:
    - "information and energy cooperation in cognitive radio networks"
    - "base station sleeping and resource allocation in renewable energy powered cellular networks"
    - "energy cooperation in energy harvesting communications"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"
    - "energy cooperation in cellular networks with renewable powered base stations"
    - "planning of cellular networks enhanced by energy harvesting"
    - "throughput optimal policies for energy harvesting wireless transmitters with non ideal circuit power"
    - "optimal save then transmit protocol for energy harvesting wireless transmitters"

Connected through hyperedge HE-8 (induced by source paper "optimal dynamic multicast scheduling for cache enabled content centric wireless networks"):
  with members:
    - "stochastic content centric multicast scheduling for cache enabled heterogeneous cellular networks"
    - "energy efficiency of downlink networks with caching at base stations"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "adaptive video streaming for wireless networks with multiple users and helpers"
    - "coded caching for delay sensitive content"
    - "on content centric wireless delivery networks"
    - "multicast aware caching for small cell networks"
    - "living on the edge the role of proactive caching in 5g wireless 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.SY(Systems and Control)