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: "assessment of lte wireless access for monitoring of energy distribution in the smart grid"
  Abstract: While LTE is becoming widely rolled out for human-type services, it is also a promising solution for cost-efficient connectivity of the smart grid monitoring equipment. This is a type of machine-to-machine (M2M) traffic that consists mainly of sporadic uplink transmissions. In such a setting, the amount of traffic that can be served in a cell is not constrained by the data capacity, but rather by the signaling constraints in the random access channel and control channel. In this paper we explore these limitations using a detailed simulation of the LTE access reservation protocol (ARP). We find that 1) assigning more random access opportunities may actually worsen performance; and 2) the additional signaling that follows the ARP has very large impact on the capacity in terms of the number of supported devices; we observed a reduction in the capacity by almost a factor of 3. This suggests that a lightweight access method, with a reduced number of signaling messages, needs to be considered in standardization for M2M applications. Additionally we propose a tractable analytical model to calculate the outage that can be rapidly implemented and evaluated. The model accounts for the features of the random access, control channel and uplink and downlink data channels, as well as retransmissions.

Connected through hyperedge HE-1 (induced by source paper "on throughput maximization of grant free access with reliability latency constraints"):
  with members:
    - "wireless access in ultra reliable low latency communication urllc"
    - "delay analysis of multichannel parallel contention tree algorithms mp cta"
    - "frameless aloha with reliability latency guarantees"
    - "sign compute resolve for tree splitting random access"

Connected through hyperedge HE-2 (induced by source paper "performance evaluation of communication technologies and network structure for smart grid applications"):
  with members:
    - "small signal stability analysis and performance evaluation of microgrids under distributed control"
    - "a distributed cooperative control framework for synchronized reconnection of a multi bus microgrid"

Connected through hyperedge HE-3 (induced by source paper "wireless access in ultra reliable low latency communication urllc"):
  with members:
    - "how reliable and capable is multi connectivity"
    - "wireless channel dynamics and robustness for ultra reliable low latency communications"
    - "improving network availability of ultra reliable and low latency communications with multi connectivity"
    - "packet duplication in dual connectivity enabled 5g wireless networks overview and challenges"
    - "massive mimo for ultra reliable communications with constellations for dual coherent noncoherent detection"
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "energy latency tradeoff in ultra reliable low latency communication with retransmissions"
    - "ultra reliable and low latency communications in 5g downlink physical layer aspects"

Connected through hyperedge HE-4 (induced by source paper "latency energy tradeoff based on channel scheduling and repetitions in nb iot systems"):
  with members:
    - "self organized low power iot networks a distributed learning approach"
    - "an enhanced access reservation protocol with a partial preamble transmission mechanism in nb iot systems"
    - "narrowband iot data transmission procedures for massive machine type communications"
    - "evaluating the performance of emtc and nb iot for smart city applications"
    - "optimized lte data transmission procedures for iot device side energy consumption analysis"
    - "random access preamble design and detection for 3gpp narrowband iot systems"
    - "adaptive drx scheme to improve energy efficiency in lte networks with bounded delay"

Connected through hyperedge HE-5 (induced by source paper "security for 4g and 5g cellular networks a survey of existing authentication and privacy preserving schemes"):
  with members:
    - "cloudifying the 3gpp ip multimedia subsystem for 4g and beyond a survey"
    - "privacy preserving schemes for ad hoc social networks a survey"
    - "device to device communication in cellular networks"
    - "user association in 5g networks a survey and an outlook"
    - "a survey of downlink non orthogonal multiple access for 5g wireless communication networks"
    - "survey of promising technologies for 5g networks"
    - "securefind secure and privacy preserving object finding via mobile crowdsourcing"
    - "the random oracle methodology revisited"

Connected through hyperedge HE-6 (induced by source paper "statistical multiplexing of computations in c ran with tradeoffs in latency and energy"):
  with members:
    - "on the effect of fronthaul latency on arq in c ran systems"
    - "on the statistical multiplexing gain of virtual base station pools"

Connected through hyperedge HE-7 (induced by source paper "narrowband iot data transmission procedures for massive machine type communications"):
  with members:
    - "network slicing for 5g with sdn nfv concepts architectures and challenges"
    - "optimized lte data transmission procedures for iot device side energy consumption analysis"

Connected through hyperedge HE-8 (induced by source paper "data aggregation and packet bundling of uplink small packets for monitoring applications in lte"):
  with members:
    - "optimizing data aggregation for uplink machine to machine communication networks"
    - "coverage and economy of cellular networks with many base stations"

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.IT(Information Theory)