PMID- 30201933 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180912 LR - 20181114 IS - 1424-8220 (Electronic) IS - 1424-8220 (Linking) VI - 18 IP - 9 DP - 2018 Sep 10 TI - An IoT-Oriented Offloading Method with Privacy Preservation for Cloudlet-Enabled Wireless Metropolitan Area Networks. LID - 10.3390/s18093030 [doi] LID - 3030 AB - With the development of the Internet of Things (IoT) technology, a vast amount of the IoT data is generated by mobile applications from mobile devices. Cloudlets provide a paradigm that allows the mobile applications and the generated IoT data to be offloaded from the mobile devices to the cloudlets for processing and storage through the access points (APs) in the Wireless Metropolitan Area Networks (WMANs). Since most of the IoT data is relevant to personal privacy, it is necessary to pay attention to data transmission security. However, it is still a challenge to realize the goal of optimizing the data transmission time, energy consumption and resource utilization with the privacy preservation considered for the cloudlet-enabled WMAN. In this paper, an IoT-oriented offloading method, named IOM, with privacy preservation is proposed to solve this problem. The task-offloading strategy with privacy preservation in WMANs is analyzed and modeled as a constrained multi-objective optimization problem. Then, the Dijkstra algorithm is employed to evaluate the shortest path between APs in WMANs, and the nondominated sorting differential evolution algorithm (NSDE) is adopted to optimize the proposed multi-objective problem. Finally, the experimental results demonstrate that the proposed method is both effective and efficient. FAU - Xu, Zhanyang AU - Xu Z AD - School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, China. zhanyang_xu@nuist.edu.cn. AD - Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science and Technology, Nanjing 210044, China. zhanyang_xu@nuist.edu.cn. FAU - Gu, Renhao AU - Gu R AD - School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, China. renhaogu@gmail.com. AD - Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science and Technology, Nanjing 210044, China. renhaogu@gmail.com. FAU - Huang, Tao AU - Huang T AD - School of Computer Science and Technology, Silicon Lake College, Suzhou 215332, China. nuisthuangtao@163.com. FAU - Xiang, Haolong AU - Xiang H AD - Department of Electrical and Computer Engineering, University of Auckland, Auckland 1023, New Zealand. hlx6700@gmail.com. FAU - Zhang, Xuyun AU - Zhang X AUID- ORCID: 0000-0001-7353-4159 AD - Department of Electrical and Computer Engineering, University of Auckland, Auckland 1023, New Zealand. xuyun.zhang@auckland.ac.nz. FAU - Qi, Lianyong AU - Qi L AD - School of Information Science and Engineering, Qufu Normal University, Rizhao 276826, China. lianyongqi@gmail.com. FAU - Xu, Xiaolong AU - Xu X AUID- ORCID: 0000-0003-4879-9803 AD - School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, China. njuxlxu@gmail.com. AD - Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science and Technology, Nanjing 210044, China. njuxlxu@gmail.com. LA - eng GR - 61702277, 61772283/National Science Foundation of China/ GR - KFKT2017B04/The Startup Foundation for Introducing Talent of NUIST/ PT - Journal Article DEP - 20180910 PL - Switzerland TA - Sensors (Basel) JT - Sensors (Basel, Switzerland) JID - 101204366 PMC - PMC6164151 OTO - NOTNLM OT - IoT data OT - WMAN environment OT - cloudlet OT - privacy preservation COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results. EDAT- 2018/09/12 06:00 MHDA- 2018/09/12 06:01 PMCR- 2018/09/01 CRDT- 2018/09/12 06:00 PHST- 2018/08/16 00:00 [received] PHST- 2018/09/07 00:00 [revised] PHST- 2018/09/09 00:00 [accepted] PHST- 2018/09/12 06:00 [entrez] PHST- 2018/09/12 06:00 [pubmed] PHST- 2018/09/12 06:01 [medline] PHST- 2018/09/01 00:00 [pmc-release] AID - s18093030 [pii] AID - sensors-18-03030 [pii] AID - 10.3390/s18093030 [doi] PST - epublish SO - Sensors (Basel). 2018 Sep 10;18(9):3030. doi: 10.3390/s18093030.