dc.contributor.author | Zhan, W | |
dc.contributor.author | Luo, C | |
dc.contributor.author | Min, G | |
dc.contributor.author | Wang, C | |
dc.contributor.author | Zhu, Q | |
dc.contributor.author | Duan, H | |
dc.date.accessioned | 2020-01-20T11:52:56Z | |
dc.date.issued | 2020-01-14 | |
dc.description.abstract | Mobile Edge Computing (MEC) is a new computing paradigm with great potential to enhance the performance of user equipment (UE) by offloading resource-hungry computation tasks to lightweight and ubiquitously deployed MEC servers. In this paper, we investigate the problem of offloading decision and resource allocation among multiple users served by one base station to achieve the optimal system-wide user utility, which is defined as a trade-off between task latency and energy consumption. Mobility in the process of task offloading is considered in the optimization. We prove that the problem is NP-hard and propose a heuristic mobility-aware offloading algorithm (HMAOA) to obtain the approximate optimal offloading scheme. The original global optimization problem is converted into multiple local optimization problems. Each local optimization problem is then decomposed into two subproblems: a convex computation allocation subproblem and a non-linear integer programming (NLIP) offloading decision subproblem. The convex subproblem is solved with a numerical method to obtain the optimal computation allocation among multiple offloading users, and a partial order based heuristic approach is designed for the NLIP subproblem to determine the approximate optimal offloading decision. The proposed HMAOA is with polynomial complexity. Extensive simulation experiments and comprehensive comparison with six baseline algorithms demonstrate its excellent performance. | en_GB |
dc.identifier.citation | Published online 14 January 2020 | en_GB |
dc.identifier.doi | 10.1109/tvt.2020.2966500 | |
dc.identifier.uri | http://hdl.handle.net/10871/40506 | |
dc.language.iso | en | en_GB |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | en_GB |
dc.rights | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be
obtained for all other uses, in any current or future media, including
reprinting/republishing this material for advertising or promotional purposes, creating new
collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted
component of this work in other works | en_GB |
dc.subject | Mobile edge computing | en_GB |
dc.subject | task offloading | en_GB |
dc.subject | resource allocation | en_GB |
dc.subject | mobility-aware offloading | en_GB |
dc.title | Mobility-aware multi-user offloading optimization for Mobile Edge Computing | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-01-20T11:52:56Z | |
dc.identifier.issn | 0018-9545 | |
dc.description | This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record | en_GB |
dc.identifier.journal | IEEE Transactions on Vehicular Technology | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2020-01-14 | |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2020-01-14 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-01-20T11:41:56Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2020-01-20T11:53:00Z | |
refterms.panel | B | en_GB |