Information Freshness in A Dual Monitoring System
- Resource Type
- Conference
- Authors
- Deng, Dapeng; Chen, Zhengchuan; Yang, Howard H.; Pappas, Nikolaos; Hu, Limei; Wang, Min; Jia, Yunjian; Quek, Tony Q.S.
- Source
- GLOBECOM 2022 - 2022 IEEE Global Communications Conference Global Communications Conference(48099), GLOBECOM 2022 - 2022 IEEE. :4977-4982 Dec, 2022
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineering Profession
General Topics for Engineers
Power, Energy and Industry Applications
Signal Processing and Analysis
Closed-form solutions
Markov processes
Reliability theory
Information age
Sensor systems
Real-time systems
Sensors
Age of information
dual-queue
timely status update
status sampling network
- Language
We study the average age of information (AoI) and peak AoI (PAoI) of a dual-queue status update system that monitors a common stochastic process. We capture the state transition characteristics of the considered system by establishing a Markov chain. Using the state flow graph analysis method, we derive closed-form expressions of the average peak age of information (PAoI) and the average age of information (AoI) for the dual-queue update system. The numerical results show that compared with the single-queue update system, the average PAoI of the dual-queue update system is reduced by 33.5% and the average AoI dropped by 37.5%.