TY - JOUR A2 - Liu, Xin AU - Wang, Yong AU - Tang, Siyu AU - Zhu, Xiaorong AU - Xie, Yonghua PY - 2021 DA - 2021/12/31 TI - A Novel Multitask Scheduling and Distributed Collaborative Computing Method of Edge Nodes in the Internet of Things SP - 1548142 VL - 2021 AB - In this paper, we propose a novel multitask scheduling and distributed collaborative computing method for quality of service (QoS) guaranteed delay-sensitive services in the Internet of Things (IoT). First, we propose a multilevel scheduling framework combining the process and thread scheduling for reducing the processing delay of multitype services of a single edge node in IoT, where a preemptive static priority process scheduling algorithm is adopted for different types of services and a dynamic priority-based thread scheduling algorithm is proposed for the same type of services with high concurrency. Furthermore, for reducing the processing delay of computation-intensive services, we propose a distributed task offloading algorithm based on a multiple 0-1 knapsack model with value limitation with the collaboration of multiple edge nodes to minimize the processing delay. Simulation results show that the proposed method can significantly reduce not only the scheduling delay of a large number of time-sensitive services in single edge node but also the process delay of computation-intensive service collaborated by multiple edge nodes. SN - 1530-8669 UR - https://doi.org/10.1155/2021/1548142 DO - 10.1155/2021/1548142 JF - Wireless Communications and Mobile Computing PB - Hindawi KW - ER -