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: "lora backscatter enabling the vision of ubiquitous connectivity"
  Abstract: The vision of embedding connectivity into billions of everyday objects runs into the reality of existing communication technologies --- there is no existing wireless technology that can provide reliable and long-range communication at tens of microwatts of power as well as cost less than a dime. While backscatter is low-power and low-cost, it is known to be limited to short ranges. This paper overturns this conventional wisdom about backscatter and presents the first wide-area backscatter system. Our design can successfully backscatter from any location between an RF source and receiver, separated by 475 m, while being compatible with commodity LoRa hardware. Further, when our backscatter device is co-located with the RF source, the receiver can be as far as 2.8 km away. We deploy our system in a 4,800 $ft^{2}$ (446 $m^{2}$) house spread across three floors, a 13,024 $ft^{2}$ (1210 $m^{2}$) office area covering 41 rooms, as well as a one-acre (4046 $m^{2}$) vegetable farm and show that we can achieve reliable coverage, using only a single RF source and receiver. We also build a contact lens prototype as well as a flexible epidermal patch device attached to the human skin. We show that these devices can reliably backscatter data across a 3,328 $ft^{2}$ (309 $m^{2}$) room. Finally, we present a design sketch of a LoRa backscatter IC that shows that it costs less than a dime at scale and consumes only 9.25 $\mu$W of power, which is more than 1000x lower power than LoRa radio chipsets.

Connected through hyperedge HE-1 (induced by source paper "towards flexible wireless charging for medical implants using distributed antenna system"):
  with members:
    - "living iot a flying wireless platform on live insects"
    - "netscatter enabling large scale backscatter networks"
    - "powering the next billion devices with wi fi"

Connected through hyperedge HE-2 (induced by source paper "uav data collection over noma backscatter networks uav altitude and trajectory optimization"):
  with members:
    - "3 d placement of an unmanned aerial vehicle base station for maximum coverage of users with different qos requirements"
    - "ultra reliable uav communication using altitude and cooperation diversity"
    - "efficient 3d placement of a uav using particle swarm optimization"
    - "backscatter communications for internet of things theory and applications"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "power domain non orthogonal multiple access noma in 5g systems potentials and challenges"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "energy efficient data collection in uav enabled wireless sensor network"

Connected through hyperedge HE-3 (induced by source paper "tunnelscatter low power communication for sensor tags using tunnel diodes"):
  with members:
    - "living iot a flying wireless platform on live insects"
    - "solargest ubiquitous and battery free gesture recognition using solar cells"
    - "fm backscatter enabling connected cities and smart fabrics"
    - "inter technology backscatter towards internet connectivity for implanted devices"
    - "powering the next billion devices with wi fi"

Connected through hyperedge HE-4 (induced by source paper "lightweight sybil resilient multi robot networks by multipath manipulation"):
  with members:
    - "shieldscatter improving iot security with backscatter assistance"
    - "authenticating on body backscatter by exploiting propagation signatures"
    - "fm backscatter enabling connected cities and smart fabrics"
    - "the mason test a defense against sybil attacks in wireless networks without trusted authorities"

Connected through hyperedge HE-5 (induced by source paper "optimal channel estimation for reciprocity based backscattering with a full duplex mimo reader"):
  with members:
    - "modulation in the air backscatter communication over ambient ofdm carrier"
    - "communications and signals design for wireless power transmission"
    - "semi coherent detection and performance analysis for ambient backscatter system"
    - "multi antenna wireless energy transfer for backscatter communication systems"

Connected through hyperedge HE-6 (induced by source paper "rf backscatter based state estimation for micro aerial vehicles"):
  with members:
    - "imgsensingnet uav vision guided aerial ground air quality sensing system"
    - "vins mono a robust and versatile monocular visual inertial state estimator"
    - "cooperative relative positioning of mobile users by fusing imu inertial and uwb ranging information"
    - "orb slam a versatile and accurate monocular slam system"

Connected through hyperedge HE-7 (induced by source paper "reliable wide area backscatter via channel polarization"):
  with members:
    - "netscatter enabling large scale backscatter networks"
    - "list decoding of polar codes"
    - "channel polarization a method for constructing capacity achieving codes for symmetric binary input memoryless channels"

Connected through hyperedge HE-8 (induced by source paper "living iot a flying wireless platform on live insects"):
  with members:
    - "netscatter enabling large scale backscatter networks"
    - "fm backscatter enabling connected cities and smart fabrics"
    - "inter technology backscatter towards internet connectivity for implanted devices"

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)