Joint Optimization of Age of Information and Energy Consumption in NR-V2X System based on Deep Reinforcement Learning

• URL: http://arxiv.org/abs/2407.08458v1
• Date: Thu, 11 Jul 2024 12:54:38 GMT
• Title: Joint Optimization of Age of Information and Energy Consumption in NR-V2X System based on Deep Reinforcement Learning
• Authors: Shulin Song, Zheng Zhang, Qiong Wu, Qiang Fan, Pingyi Fan,
• Abstract summary: Vehicle-to-Everything (V2X) specifications based on 5G New Radio (NR) technology. Mode 2 Side-Link (SL) communication resembles Mode 4 in LTE-V2X, allowing direct communication between vehicles. interference cancellation method is employed to mitigate this impact.
• Score: 13.62746306281161
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Autonomous driving may be the most important application scenario of next generation, the development of wireless access technologies enabling reliable and low-latency vehicle communication becomes crucial. To address this, 3GPP has developed Vehicle-to-Everything (V2X) specifications based on 5G New Radio (NR) technology, where Mode 2 Side-Link (SL) communication resembles Mode 4 in LTE-V2X, allowing direct communication between vehicles. This supplements SL communication in LTE-V2X and represents the latest advancement in cellular V2X (C-V2X) with improved performance of NR-V2X. However, in NR-V2X Mode 2, resource collisions still occur, and thus degrade the age of information (AOI). Therefore, a interference cancellation method is employed to mitigate this impact by combining NR-V2X with Non-Orthogonal multiple access (NOMA) technology. In NR-V2X, when vehicles select smaller resource reservation interval (RRI), higher-frequency transmissions take ore energy to reduce AoI. Hence, it is important to jointly consider AoI and communication energy consumption based on NR-V2X communication. Then, we formulate such an optimization problem and employ the Deep Reinforcement Learning (DRL) algorithm to compute the optimal transmission RRI and transmission power for each transmitting vehicle to reduce the energy consumption of each transmitting vehicle and the AoI of each receiving vehicle. Extensive simulations have demonstrated the performance of our proposed algorithm.

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