TY - JOUR
T1 - Age of Information of a Dual Queue Status Update System
T2 - A Stochastic Hybrid Systems Method
AU - Chen, Zhengchuan
AU - Lang, Kang
AU - Yang, Howard H.
AU - Pappas, Nikolaos
AU - Wang, Min
AU - Quek, Tony Q.S.
N1 - Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grant 62271092, Grant 62001074, and Grant 62271513; in part by Project funded by Chongqing Postdoctoral Special Research Program Grant No. 2022XM2006.
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2023/7/1
Y1 - 2023/7/1
N2 - Using redundant devices to update the status can improve the robustness against transmission failure, thus improving timeliness of information. However, out of order update arrivals resulting from multiple devices impose a significant challenge to the analysis of timeliness of information in such systems. This letter studies the average age of information (AoI) of a dual queue status update system under zero-wait policy. We leverage tools from stochastic hybrid systems to derive closed-form expression for the average AoI of the dual queue system and extend the result to the three-queue system. The results show that the average AoI of the dual queue system can be reduced by 37.5% compared to that using only a single queue.
AB - Using redundant devices to update the status can improve the robustness against transmission failure, thus improving timeliness of information. However, out of order update arrivals resulting from multiple devices impose a significant challenge to the analysis of timeliness of information in such systems. This letter studies the average age of information (AoI) of a dual queue status update system under zero-wait policy. We leverage tools from stochastic hybrid systems to derive closed-form expression for the average AoI of the dual queue system and extend the result to the three-queue system. The results show that the average AoI of the dual queue system can be reduced by 37.5% compared to that using only a single queue.
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U2 - 10.1109/LCOMM.2023.3274348
DO - 10.1109/LCOMM.2023.3274348
M3 - Article
AN - SCOPUS:85159794948
SN - 1089-7798
VL - 27
SP - 1714
EP - 1718
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 7
ER -