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Here, we introduce the current stage and future directions of the wireless infrastructure of the Korea Research Environment Open NETwork (KREONET), a representative national research and education network in Korea. In 2018, ScienceLoRa, a pioneering wireless network infrastructure for scientific applications based on low-power wide-area network technology, was launched. Existing in-service applications in monitoring regions, research facilities, and universities prove the effectiveness of using wireless infrastructure in scientific areas. Furthermore, to support the more stringent requirements of various scientific scenarios, ScienceLoRa is evolving toward ScienceIoT by employing high-performance wireless technology and distributed computing capability. Specifically, by accommodating a private 5G network and an integrated edge computing platform, ScienceIoT is expected to support cutting-edge scientific applications requiring high-throughput and distributed data processing.
Cheonyong Kim; Joobum Kim; Ki-Hyeon Kim; Sang-Kwon Lee; Kiwook Kim; Syed Asif Raza Shah; Young-Hoon Goo. ScienceIoT: Evolution of the Wireless Infrastructure of KREONET. Sensors 2021, 21, 5852 .
AMA StyleCheonyong Kim, Joobum Kim, Ki-Hyeon Kim, Sang-Kwon Lee, Kiwook Kim, Syed Asif Raza Shah, Young-Hoon Goo. ScienceIoT: Evolution of the Wireless Infrastructure of KREONET. Sensors. 2021; 21 (17):5852.
Chicago/Turabian StyleCheonyong Kim; Joobum Kim; Ki-Hyeon Kim; Sang-Kwon Lee; Kiwook Kim; Syed Asif Raza Shah; Young-Hoon Goo. 2021. "ScienceIoT: Evolution of the Wireless Infrastructure of KREONET." Sensors 21, no. 17: 5852.
Making an SDN data plane flexible enough to satisfy the various requirements of heterogeneous IoT applications is very desirable in terms of software-defined IoT (SD-IoT) networking. Network devices with a programmable data plane provide an ability to dynamically add new packet- and data-processing procedures to IoT applications. The previously proposed solutions for the addition of the programmability feature to the SDN data plane provide extensibility for the packet-forwarding operations of new protocols, but IoT applications need a more flexible programmability for in-network data-processing operations (e.g., the sensing-data aggregation from thousands of sensor nodes). Moreover, some IoT models such as OMG DDS, oneM2M, and Eclipse SCADA use the publish-subscribe model that is difficult to represent using the operations of the existing message-centric data-plane models. We introduce a new in-network data-processing scheme for the SD-IoT data plane that defines an event-driven data-processing model that can express a variety of in-network data-processing cases in the SD-IoT environment. Also, the proposed model comprises a language for the programming of the data-processing procedures, while a flexible data-plane structure that can install and execute the programs at runtime is additionally presented. We demonstrate the flexibility of the proposed scheme by using sample programs in a number of example SD-IoT cases.
Ki-Wook Kim; Sung-Gi Min; Youn-Hee Han. In-Network Data Processing in Software-Defined IoT with a Programmable Data Plane. Mobile Information Systems 2018, 2018, 1 -9.
AMA StyleKi-Wook Kim, Sung-Gi Min, Youn-Hee Han. In-Network Data Processing in Software-Defined IoT with a Programmable Data Plane. Mobile Information Systems. 2018; 2018 ():1-9.
Chicago/Turabian StyleKi-Wook Kim; Sung-Gi Min; Youn-Hee Han. 2018. "In-Network Data Processing in Software-Defined IoT with a Programmable Data Plane." Mobile Information Systems 2018, no. : 1-9.
Making the data plane of a SDN flexible enough to satisfy the various requirements of heterogeneous IoT applications is very desirable for Software Defined IoT (SD-IoT) networking. The network device having programmable data plane provides an ability to add new packet and data processing procedures dynamically to the IoT applications. Previously proposed solutions for adding programmability to the SDN data plane provide extensibility for packet forwarding operations for new protocols, but IoT applications need more flexible programmability for in-network data processing operations e.g. data aggregation of sensing data from thousands of sensor nodes. Moreover, some IoT models such as OMG DDS, oneM2M, and Eclipse SCADA use publish-subscribe model, which is difficult to represent with the operations of existing message-centric data plane models. We introduce a new in-network data processing scheme for SD-IoT data plane. It defines an event-driven data processing model that can express various in-network data processing cases in the SD-IoT environment. It also proposes a language to program the data processing procedures using the model, and presents a flexible data plane structure that can install and execute the programs at runtime. We demonstrated flexibility of the proposing scheme with sample programs for some example SD-IoT cases.
Ki-Wook Kim; Sung-Gi Min; Youn-Hee Han. A programmable data plane to support in-network data processing in software-defined IoT. 2017 International Conference on Information and Communication Technology Convergence (ICTC) 2017, 855 -860.
AMA StyleKi-Wook Kim, Sung-Gi Min, Youn-Hee Han. A programmable data plane to support in-network data processing in software-defined IoT. 2017 International Conference on Information and Communication Technology Convergence (ICTC). 2017; ():855-860.
Chicago/Turabian StyleKi-Wook Kim; Sung-Gi Min; Youn-Hee Han. 2017. "A programmable data plane to support in-network data processing in software-defined IoT." 2017 International Conference on Information and Communication Technology Convergence (ICTC) , no. : 855-860.
Many Internet of Things (IoT) services utilize an IoT access network to connect small devices with remote servers. They can share an access network with standard communication technology, such as IEEE 802.11ah. However, an authentication and key management (AKM) mechanism for resource constrained IoT devices using IEEE 802.11ah has not been proposed as yet. We therefore propose a new AKM mechanism for an IoT access network, which is based on IEEE 802.11 key management with the IEEE 802.1X authentication mechanism. The proposed AKM mechanism does not require any pre-configured security information between the access network domain and the IoT service domain. It considers the resource constraints of IoT devices, allowing IoT devices to delegate the burden of AKM processes to a powerful agent. The agent has sufficient power to support various authentication methods for the access point, and it performs cryptographic functions for the IoT devices. Performance analysis shows that the proposed mechanism greatly reduces computation costs, network costs, and memory usage of the resource-constrained IoT device as compared to the existing IEEE 802.11 Key Management with the IEEE 802.1X authentication mechanism.
Ki-Wook Kim; Youn-Hee Han; Sung-Gi Min. An Authentication and Key Management Mechanism for Resource Constrained Devices in IEEE 802.11-based IoT Access Networks. Sensors 2017, 17, 2170 .
AMA StyleKi-Wook Kim, Youn-Hee Han, Sung-Gi Min. An Authentication and Key Management Mechanism for Resource Constrained Devices in IEEE 802.11-based IoT Access Networks. Sensors. 2017; 17 (10):2170.
Chicago/Turabian StyleKi-Wook Kim; Youn-Hee Han; Sung-Gi Min. 2017. "An Authentication and Key Management Mechanism for Resource Constrained Devices in IEEE 802.11-based IoT Access Networks." Sensors 17, no. 10: 2170.
Ki-Wook Kim; Kwang-Ryoul Kim; Sung-Gi Min. Distributed cluster head election algorithm using local energy estimation. Proceedings of the 2009 International Conference on Computer-Aided Design - ICCAD '09 2009, 1 .
AMA StyleKi-Wook Kim, Kwang-Ryoul Kim, Sung-Gi Min. Distributed cluster head election algorithm using local energy estimation. Proceedings of the 2009 International Conference on Computer-Aided Design - ICCAD '09. 2009; ():1.
Chicago/Turabian StyleKi-Wook Kim; Kwang-Ryoul Kim; Sung-Gi Min. 2009. "Distributed cluster head election algorithm using local energy estimation." Proceedings of the 2009 International Conference on Computer-Aided Design - ICCAD '09 , no. : 1.