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论文类型：期刊论文
发表时间：2018-05-01
发表刊物：FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
收录刊物：SCIE、EI、ESI高被引论文、Scopus
卷号：82
页面范围：656-666
ISSN号：0167-739X
关键字：Internet of Things; Sink node; Multi-core; Task allocation strategy; Load balance
摘要：With the increase of collected information, the computing performance of single-core sink node for Internet of Things (IoTs) cannot satisfy with the demand of large data processing any more. Therefore, the sink node which based on embedded multi-core SoC for IoTs and maximizing its computing performance has brought into focus in recent years. In this paper, we design a multi-core Task-Efficient Sink Node (TESN) based on heterogeneous architecture and the Weighted-Least Connection (WLC) task schedule strategy has been proposed to improve its efficiency. There are two types of cores in the sink node, master core and slave cores. The master core deals with tasks allocation and the seven slave cores deal with data processing. All of the cores are communicating with each other through mailbox. By considering each cores real-time processing information and computing performance, the proposed WLC can balance each cores load and reduce network congestion. The Xilinx V5 platform is used to evaluate the performance of WLC and Round-Robin (RR) algorithms for multi-core sink node. The experiment results show that the WLC strategy improves the processing speed obviously, achieves load balance and avoids large scale congestion of sink node in the sensor networks of IoTs. (C) 2016 Elsevier B.V. All rights reserved.