• 제목/요약/키워드: Prioritization, Internet of Things (IoT)

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Prioritized Data Transmission Mechanism for IoT

  • Jung, Changsu
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제14권6호
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    • pp.2333-2353
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    • 2020
  • This paper proposes a novel data prioritization and transmission mechanism to minimize the number of packets transmitted and reduce network overload using the constrained application protocol (CoAP) in resource-constrained networks. The proposed scheme adopts four classification parameters to classify and prioritize data from a sensor. With the packet prioritization scheme, the sensed data having the lowest priority is only delivered using the proposed keep-alive message notification to decrease the number of packets transmitted. The performance evaluation demonstrates that the proposed scheme shows the improvement of resource utilization in energy consumption, and bandwidth usage compared with the existing CoAP methods. Furthermore, the proposed scheme supports quality-of-service (QoS) per packet by differentiating transmission delays regarding priorities.

Efficient Resource Slicing Scheme for Optimizing Federated Learning Communications in Software-Defined IoT Networks

  • 담프로힘;맛사;김석훈
    • 인터넷정보학회논문지
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    • 제22권5호
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    • pp.27-33
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    • 2021
  • With the broad adoption of the Internet of Things (IoT) in a variety of scenarios and application services, management and orchestration entities require upgrading the traditional architecture and develop intelligent models with ultra-reliable methods. In a heterogeneous network environment, mission-critical IoT applications are significant to consider. With erroneous priorities and high failure rates, catastrophic losses in terms of human lives, great business assets, and privacy leakage will occur in emergent scenarios. In this paper, an efficient resource slicing scheme for optimizing federated learning in software-defined IoT (SDIoT) is proposed. The decentralized support vector regression (SVR) based controllers predict the IoT slices via packet inspection data during peak hour central congestion to achieve a time-sensitive condition. In off-peak hour intervals, a centralized deep neural networks (DNN) model is used within computation-intensive aspects on fine-grained slicing and remodified decentralized controller outputs. With known slice and prioritization, federated learning communications iteratively process through the adjusted resources by virtual network functions forwarding graph (VNFFG) descriptor set up in software-defined networking (SDN) and network functions virtualization (NFV) enabled architecture. To demonstrate the theoretical approach, Mininet emulator was conducted to evaluate between reference and proposed schemes by capturing the key Quality of Service (QoS) performance metrics.

스마트시티 IoT 품질 지표 개발 및 우선순위 도출 (Development of Smart City IoT Data Quality Indicators and Prioritization Focusing on Structured Sensing Data)

  • 양현모;한규보;이정훈
    • 한국빅데이터학회지
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    • 제6권1호
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    • pp.161-178
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    • 2021
  • '빅데이터'는 '21세기 원유'로 비유될 만큼 그 중요성이 증대되고 있다. 스마트시티에서 생성 및 수집되는 IoT 데이터의 경우 데이터의 품질이 공공서비스의 품질과 연관되므로 품질관리에 주의를 기울여야 한다. 그러나 ISO/IEC 기관 및 국내/외 여러 기관을 통해 제시된 데이터 품질 지표는 '사용자' 중심에 한정되어 있다는 한계점을 지닌다. 본 연구는 이러한 한계점을 보완하기 위해 공급자 중심의 지표와 그 우선순위를 도출하였다. 공급자 중심의 스마트시티 IoT 데이터 품질 평가지표 3개의 카테고리와 13개의 지표를 도출한 후 AHP 분석을 통하여 지표 카테고리와 데이터 품질 지표의 우선순위를 도출하였고 각 지표의 타당성을 조사하였다. 해당 연구를 통해 센서 데이터를 수집하고 취합하여 전달하는 직무를 수행하는 개인 혹은 기업에게 데이터가 지녀야 하는 기본적인 요건을 제시함으로써 센서 데이터 품질 향상에 기여할 수 있다. 또한 지표 우선순위를 기반으로 데이터 품질관리를 수행하여 품질관리 업무 효율의 향상을 제공할 수 있다.