Document Type

Article

Language

eng

Publication Date

12-2020

Publisher

Institute of Electrical and Electronics Engineers

Source Publication

IEEE Transactions on Cognitive Communications and Networking

Source ISSN

2332-7731

Abstract

Mobile edge computing (MEC) is a promising technology to support mission-critical vehicular applications, such as intelligent path planning and safety applications. In this paper, a collaborative edge computing framework is developed to reduce the computing service latency and improve service reliability for vehicular networks. First, a task partition and scheduling algorithm (TPSA) is proposed to decide the workload allocation and schedule the execution order of the tasks offloaded to the edge servers given a computation offloading strategy. Second, an artificial intelligence (AI) based collaborative computing approach is developed to determine the task offloading, computing, and result delivery policy for vehicles. Specifically, the offloading and computing problem is formulated as a Markov decision process. A deep reinforcement learning technique, i.e., deep deterministic policy gradient, is adopted to find the optimal solution in a complex urban transportation network. By our approach, the service cost, which includes computing service latency and service failure penalty, can be minimized via the optimal workload assignment and server selection in collaborative computing. Simulation results show that the proposed AI-based collaborative computing approach can adapt to a highly dynamic environment with outstanding performance.

Comments

Accepted version. IEEE Transactions on Cognitive Communications and Networking, Vol. 6, No. 4 (December 2020): 1122-1135. DOI. © 2020 The Institute of Electrical and Electronics Engineers. Used with permission.

Jie Gao was affiliated with University of Waterloo at the time of publication.

Download
gao_14433acc.docx (456 kB)
ADA Accessible Version

Share

COinS