Age-of-information in the presence of error

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Conference object 01 Jul 2016Embargo end date: 01 May 2016Publisher:IEEEJournal:2016 IEEE International Symposium on Information Theory (ISIT)

Authors: Kun Chen 0004; Longbo Huang;

doi: 10.1109/isit.2016.7541765 , 10.48550/arxiv.1605.00559

arXiv: 1605.00559

Age-of-information in the presence of error

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Abstract

We consider the peak age-of-information (PAoI) in an M/M/1 queueing system with packet delivery error, i.e., update packets can get lost during transmissions to their destination. We focus on two types of policies, one is to adopt Last-Come-First-Served (LCFS) scheduling, and the other is to utilize retransmissions, i.e., keep transmitting the most recent packet. Both policies can effectively avoid the queueing delay of a busy channel and ensure a small PAoI. Exact PAoI expressions under both policies with different error probabilities are derived, including First-Come-First-Served (FCFS), LCFS with preemptive priority, LCFS with non-preemptive priority, Retransmission with preemptive priority, and Retransmission with non-preemptive priority. Numerical results obtained from analysis and simulation are presented to validate our results.

8 pages, 3 figures

Related Organizations

Tsinghua University
Tsinghua University
Tsinghua University
Tsinghua University
China (People's Republic of)
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Keywords

Performance (cs.PF), FOS: Computer and information sciences, Computer Science - Performance

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