Analysis of AoI violation probability in wireless networks

Meiyan Song, Howard H. Yang, Hangguan Shan, Jemin Lee, Huaming Lin, Tony Q.S. Quek

研究成果: Conference contribution

摘要

The rapid development of the Internet of Things has led to the rise of many real-time applications, which are highly dependent on timely information delivery to respond correctly to changes in the surrounding environment. Therefore, age of information (AoI) has aroused widespread attention as a new metric to evaluate information freshness at the destination. In this paper, we investigate the effect of the retransmission mechanism and updating patterns on the AoI performance. Different from the existing work that considers the average value of AoI, we adopt violation probability, the probability that AoI exceeds a certain threshold, as the metric for meeting the strict timeliness requirements of different applications. We obtain closed-form expressions of AoI violation probability for active sources and buffered sources under last-come-first-served discipline with packet discarding. The accuracy of the analyses is verified through simulations. Numerical results show that the buffered sources with periodic arrivals have better performance in terms of information freshness given service rate and updating rate.

原文English
主出版物標題2021 17th International Symposium on Wireless Communication Systems, ISWCS 2021
發行者VDE Verlag GmbH
ISBN(電子)9781728174327
DOIs
出版狀態Published - 2021 九月 6
事件17th International Symposium on Wireless Communication Systems, ISWCS 2021 - Berlin, Germany
持續時間: 2021 九月 62021 九月 9

出版系列

名字Proceedings of the International Symposium on Wireless Communication Systems
2021-September
ISSN(列印)2154-0217
ISSN(電子)2154-0225

Conference

Conference17th International Symposium on Wireless Communication Systems, ISWCS 2021
國家/地區Germany
城市Berlin
期間21-09-0621-09-09

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 電氣與電子工程
  • 通訊

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