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Satellite Edge Computing Architecture and Network Slice Scheduling for IoT Support

Satellite Edge Computing Architecture and Network Slice Scheduling for IoT Support
Kim, TaeyeounKwak, JeonghoChoi, Jihwan P.
Issued Date
IEEE Internet of Things Journal, v.9, no.16, pp.14938 - 14951
Author Keywords
edge computingEdge computingInternet of Thingsnetwork slicingNetwork slicingProcessor schedulingsatellite IoTsatellite networkSatellitesServersTask analysisundirected graph.
For 5G and 6G communications, satellites are drawing great attention for global coverage extension and 3-dimensional mobility enhancement. With advancements of satellite hardware, functional satellites are expected to be applied for 6G internet of things (IoT) services. In particular, because IoT service has a relatively low computational burden, it is more feasible for satellite edge computing (SatEC) with limited power, making IoT supportable SatEC one of the economically feasible applications for future satellite networks. In this paper, an architecture of IoT supportable SatEC is analyzed, and the corresponding network slice scheduling is proposed. First, a multi-objective optimization problem for IoT supportable SatEC is formulated with respect to latency, computational power, and transmission power attenuation. The problem is solved for the satellite offloading rate and altitude by using a heuristic algorithm in low time-complextiy with time-varying satellite constellation topology and various service requirements for simulations. Next, to analyze the expandability of the SatEC IoT network, a sliced SatEC IoT scheduling problem is formulated in the normalized weighted sum of latency, computational power, and transmission power attenuation. Scheduling rules are proposed to prioritize various applications with the results of the scheduling problem and with the proper SatEC offloading rates pre-defined in the Pareto-optimality of the satellite edge multi-objective Tabu search (SE-MOTS). Finally, efficient satellite constellations are determined by comparing low earth orbit (LEO) and very low earth orbit (VLEO) satellite networks, in terms of proper satellite altitudes and offloading strategies for IoT supportable SatEC. Based on simulation results, a scheduling rule for sliced satellite network and a proper offloading strategy of different slices are proposed, and an appropriate altitude of the satellite network for sliced SatEC is discussed. IEEE
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • 곽정호 Kwak, Jeongho 전기전자컴퓨터공학과
  • Research Interests 클라우드 컴퓨팅; 엣지컴퓨팅; 네트워크 자원관리; 모바일 시스템
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Department of Electrical Engineering and Computer Science Intelligent Computing & Networking Laboratory 1. Journal Articles


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