Reinforcement Learning for Joint V2I Network Selection and Autonomous Driving Policies

• URL: http://arxiv.org/abs/2208.02249v1
• Date: Wed, 3 Aug 2022 04:33:02 GMT
• Title: Reinforcement Learning for Joint V2I Network Selection and Autonomous Driving Policies
• Authors: Zijiang Yan and Hina Tabassum
• Abstract summary: Vehicle-to-Infrastructure (V2I) communication is becoming critical for the enhanced reliability of autonomous vehicles (AVs) It is critical to simultaneously optimize the AVs' network selection and driving policies in order to minimize road collisions. We develop a reinforcement learning framework to characterize efficient network selection and autonomous driving policies.
• Score: 14.518558523319518
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Vehicle-to-Infrastructure (V2I) communication is becoming critical for the enhanced reliability of autonomous vehicles (AVs). However, the uncertainties in the road-traffic and AVs' wireless connections can severely impair timely decision-making. It is thus critical to simultaneously optimize the AVs' network selection and driving policies in order to minimize road collisions while maximizing the communication data rates. In this paper, we develop a reinforcement learning (RL) framework to characterize efficient network selection and autonomous driving policies in a multi-band vehicular network (VNet) operating on conventional sub-6GHz spectrum and Terahertz (THz) frequencies. The proposed framework is designed to (i) maximize the traffic flow and minimize collisions by controlling the vehicle's motion dynamics (i.e., speed and acceleration) from autonomous driving perspective, and (ii) maximize the data rates and minimize handoffs by jointly controlling the vehicle's motion dynamics and network selection from telecommunication perspective. We cast this problem as a Markov Decision Process (MDP) and develop a deep Q-learning based solution to optimize the actions such as acceleration, deceleration, lane-changes, and AV-base station assignments for a given AV's state. The AV's state is defined based on the velocities and communication channel states of AVs. Numerical results demonstrate interesting insights related to the inter-dependency of vehicle's motion dynamics, handoffs, and the communication data rate. The proposed policies enable AVs to adopt safe driving behaviors with improved connectivity.

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