Chinese Journal on Internet of Things ›› 2020, Vol. 4 ›› Issue (2): 96-104.doi: 10.11959/j.issn.2096-3750.2020.00143

• Theory and Technology • Previous Articles     Next Articles

Cross-domain task offloading and computing resource allocation for edge computation in industrial Internet of things

Peng ZHOU1,2,Jincheng XU1,2,Bo YANG1,2   

  1. 1 Department of Automation,Shanghai Jiao Tong University,Shanghai 200240,China
    2 Key Laboratory of System Control and Information Processing,Ministry of Education,Shanghai 200240,China
  • Revised:2020-02-07 Online:2020-06-30 Published:2020-06-12
  • Supported by:
    The National Key R&D Program of China Key Special Projects(2018YFB1702300)

Abstract:

In the industrial Internet of things,limited by the computing capacity of field devices,the task offloading based on edge computing can effectively alleviate the computing burden of field devices and provide low-latency computing services.Moreover,because the load of edge servers are different in different areas of the network,it is necessary to reasonably arrange task offloading and allocate computing resources of edge servers,thereby reducing task completion delay and achieving load balance.Thus,the task offloading and resource allocation for edge computing in the industrial Internet of things was studied,a cross-domain offloading model for computing tasks in the industrial Internet of things was proposed,and a mixed integer nonlinear optimization problem that minimizes task completion time was formulated.The problem was decomposed it into two sub-problems of resource allocation and task offloading,based on the characteristics of the two sub-problems,the optimal solution of resource allocation and task offloading strategy were obtained through iterative and alternating solution.The experimental results show that compared with the non-cross-domain strategy,the load imbalance of the edge server and the task completion delay are reduced effectively by the proposed strategy.

Key words: industrial Internet of things, resource allocation, task offloading, cross-domain

CLC Number: 

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