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Analysis of peak age of information in blocking and preemptive queueing policies in a harq-based wireless link

Asvadi, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/LWC.2020.2986287
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. In this letter, we focus on evaluating Peak Age-of-Information (PAoI) in a typical wireless link in which each packet transmission is successful with some probability. The receiver applies a hybrid ARQ (HARQ) scheme such as chase combining to decode each packet. Thus, several transmissions of the same packet lead to a sequence of strictly increasing successful packet reception probabilities. Moreover, the number of transmissions for each packet is limited. In this link, when the packets are generated randomly, we compare two queueing policies at the transmitter, i.e., blocking and preemptive. The former exploits the capability of HARQ to send the packet to the destination sooner, but the latter tries to send the fresher packets to the destination. We derive analytically the average PAoI at both policies and compare them in different situations. © 2012 IEEE
  6. Keywords:
  7. Blocking policy ; Peak age of information (PAoI) ; Preemptive policy ; Error correction ; Chase combining ; Hybrid ARQ ; Number of transmissions ; Packet reception ; Packet transmissions ; Queueing policies ; Wireless link ; Transmissions
  8. Source: IEEE Wireless Communications Letters ; Volume 9, Issue 9 , 2020 , Pages 1338-1341
  9. URL: https://ieeexplore.ieee.org/document/9061059