On the Information Freshness of A Two-Sensor Status Update System

Tianqing Yang, Zhengchuan Chen, Howard H. Yang, Nikolaos Pappas, Min Wang, Yunjian Jia, Tony Q.S. Quek

研究成果: Conference contribution

摘要

This work studies the average Age of Information (AoI) of a remote monitoring system in which two sensors observe the same physical process and update the status to a common monitor using orthogonal channels. While using redundant devices to update the status of a process can improve the information timeliness at the monitor, the out-of-order arrivals of updates impose a challenge to the AoI analysis. We first model the system as two parallel M/M/1/1 queues. By leveraging tools from stochastic hybrid systems, we obtain analytically the average AoI of the system. In particular, when the arrival or service rates are the same for the two sensors, the average AoI is given in closed form. Our analysis reveals that the average AoI of the considered system is reduced by 16.44% compared to the single-sensor system when the arrival and service rates are equal to 1. Numerical results show that the considered system outperforms the M/M/2 system in average AoI at high arrival rates.

原文English
主出版物標題2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9798350329285
DOIs
出版狀態Published - 2023
事件98th IEEE Vehicular Technology Conference, VTC 2023-Fall - Hong Kong, China
持續時間: 2023 10月 102023 10月 13

出版系列

名字IEEE Vehicular Technology Conference
ISSN(列印)1550-2252

Conference

Conference98th IEEE Vehicular Technology Conference, VTC 2023-Fall
國家/地區China
城市Hong Kong
期間23-10-1023-10-13

All Science Journal Classification (ASJC) codes

  • 電腦科學應用
  • 電氣與電子工程
  • 應用數學

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