{"title":"System-Wide Energy Efficient Computation Offloading in Vehicular Edge Computing With Speed Adjustment","authors":"Haotian Li;Xujie Li;Mingyue Zhang;Buyankhishig Ulziinyam","doi":"10.1109/TGCN.2023.3349273","DOIUrl":null,"url":null,"abstract":"Vehicle-to-everything (V2X) communications in future 6G intelligent transportation systems are expected to enable various convenience applications which consume amount of computation and storage resources in vehicular networks to deliver high-quality, low-latency immersive experiences via vehicular edge computing (VEC). However, as the number of intensive tasks increases, the trade-off problem between task latency requirements and energy consumption becomes more prominent. In this paper, we study the problem of system-wide energy efficient computation offloading in speed-adjustable vehicular edge computing. We firstly consider a novel task offloading environment that considers vehicle speed adjustment to provide latency-constrained computation services for resource-limited vehicles, which fully stimulates the collaborative ability of the transportation system. We formulate the problem as a mixed-integer nonlinear programming problem to minimize the weighted energy consumption of multiple tasks. To solve this problem, we decouple it into two sub-problems, namely the task offloading decision and resource allocation problem, and the vehicle speed adjustment problem. We propose a low-complexity algorithm based on dynamic programming and a speed adjustment algorithm using a direction operator. Simulation results demonstrate the effectiveness of the proposed algorithms in optimizing the weighted energy consumption of the whole system.","PeriodicalId":13052,"journal":{"name":"IEEE Transactions on Green Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Green Communications and Networking","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10379502/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
Vehicle-to-everything (V2X) communications in future 6G intelligent transportation systems are expected to enable various convenience applications which consume amount of computation and storage resources in vehicular networks to deliver high-quality, low-latency immersive experiences via vehicular edge computing (VEC). However, as the number of intensive tasks increases, the trade-off problem between task latency requirements and energy consumption becomes more prominent. In this paper, we study the problem of system-wide energy efficient computation offloading in speed-adjustable vehicular edge computing. We firstly consider a novel task offloading environment that considers vehicle speed adjustment to provide latency-constrained computation services for resource-limited vehicles, which fully stimulates the collaborative ability of the transportation system. We formulate the problem as a mixed-integer nonlinear programming problem to minimize the weighted energy consumption of multiple tasks. To solve this problem, we decouple it into two sub-problems, namely the task offloading decision and resource allocation problem, and the vehicle speed adjustment problem. We propose a low-complexity algorithm based on dynamic programming and a speed adjustment algorithm using a direction operator. Simulation results demonstrate the effectiveness of the proposed algorithms in optimizing the weighted energy consumption of the whole system.