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Worst Case Age of Information in Wireless Sensor Networks: A Multi-Access Channel
Univ Oulu, Finland.
Univ Oulu, Finland.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.
2020 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, E-ISSN 2162-2345, Vol. 9, no 3, p. 321-325Article in journal (Refereed) Published
Abstract [en]

Freshness of status update packets is essential for enabling a wide range of applications in wireless sensor networks (WSNs). Accordingly, we consider a WSN where sensors communicate status updates to a destination by contending for the channel access based on a carrier sense multiple access (CSMA) method. We analyze the worst case average age of information (AoI) and average peak AoI from the view of one sensor in a system where all the other sensors have a saturated queue. Numerical results illustrate the importance of optimizing the contention window size and the packet arrival rate to maximize the information freshness.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2020. Vol. 9, no 3, p. 321-325
Keywords [en]
Age of information (AoI); multi-access channel; CSMA; CA; M; G; 1 queueing model
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:liu:diva-165011DOI: 10.1109/LWC.2019.2953628ISI: 000519946400014OAI: oai:DiVA.org:liu-165011DiVA, id: diva2:1422724
Note

Funding Agencies|Infotech Oulu; Academy of FinlandAcademy of Finland [323698, 318927]; Finnish Foundation for Technology Promotion; European Unions Horizon 2020 Research and Innovation Programme through the Marie Sklodowska-Curie grant (COMPRESS NETS)European Union (EU) [793402]

Available from: 2020-04-08 Created: 2020-04-08 Last updated: 2020-04-08

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Citation style
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  • de-DE
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Output format
  • html
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