物联网学报2024，Vol.8Issue(1)：71-83,13.DOI:10.11959/j.issn.2096-3750.2024.00376
面向信息年龄的车辆状态更新网络采样与功率控制
Age of information-oriented sampling and power control in vehicular status update networks
摘要
Abstract
In a vehicular status update network based on broadcast communication,a D/Geo/1/1 queuing mechanism with minimum timestamp priority was adopted to transmit data packets.The queuing theory was used to analyze the age-of-information(AoI)outage probability of the receivers and the average transmit power of the transmitter.Based on the monotonicity of the AoI outage probability with respect to packet sampling rate and transmit power,an iterative algorithm for jointly optimizing sampling rate and transmit power was proposed to minimize the maximum AoI outage probability of all receivers under power constraint,which fairly improved information freshness of all receivers under sampling and power control.Simulation results verify the accuracy of theoretical analysis and the efficiency of the algorithm.关键词
车辆状态更新网络/广播通信/信息年龄中断概率/功率控制Key words
vehicular status update network/broadcast communication/age-of-information outage probability/power control分类
信息技术与安全科学引用本文复制引用
曾健华,郭重涛,郭成..面向信息年龄的车辆状态更新网络采样与功率控制[J].物联网学报,2024,8(1):71-83,13.基金项目
国家自然科学基金项目(No.62101339) （No.62101339）
深圳市自然科学基金项目(No.JCYJ20190808114213987) （No.JCYJ20190808114213987）
鹏城实验室宽带通信研究部重大关键项目(No.PCL2023AS1-1) The National Natural Science Foundation of China(No.62101339),The Natural Science Foundation of Shenzhen(No.JCYJ20190808114213987),The Major Key Project of Peng Cheng Laboratory Department of Broadband Communication(No.PCL2023AS1-1) （No.PCL2023AS1-1）
