Deep Reinforcement Learning for Collaborative Edge Computing in Vehicular Networks

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 reliab...

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Bibliographic Details
Published in:IEEE transactions on cognitive communications and networking 2020-12, Vol.6 (4), p.1122-1135
Main Authors: Li, Mushu, Gao, Jie, Zhao, Lian, Shen, Xuemin
Format: Article
Language:English
Subjects:
Algorithms
Artificial intelligence
Collaboration
Computation offloading
Computational modeling
deep deterministic policy gradient
Deep learning
Edge computing
Internet of Vehicles
Markov processes
Mobile computing
Mobile edge computing
Network latency
Network reliability
Path planning
Processor scheduling
Reliability
Schedules
Servers
Task analysis
Task scheduling
Urban transportation
Vehicles
Wireless networks
Workload
Workloads
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Summary: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.
ISSN:2332-7731
2332-7731
DOI:10.1109/TCCN.2020.3003036