Age of Information in Prioritized Random Access
Paper in proceeding, 2021

Age of information (AoI) is a performance metric that captures the freshness of status updates. While AoI has been studied thoroughly for point-to-point links, the impact of modern random-access protocols on this metric is still unclear. In this paper, we extend the recent results by Munari to prioritized random access where devices are divided into different classes according to different AoI requirements. We consider the irregular repetition slotted ALOHA protocol and analyze the AoI evolution by means of a Markovian analysis following similar lines as in Munari (2021). We aim to design the protocol to satisfy the AoI requirements for each class while minimizing the power consumption. To this end, we optimize the update probability and the degree distributions of each class, such that the probability that their AoI exceeds a given threshold lies below a given target and the average number of transmitted packets is minimized.

Author

Khac-Hoang Ngo

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Giuseppe Durisi

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Alexandre Graell I Amat

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Conference Record - Asilomar Conference on Signals, Systems and Computers

10586393 (ISSN)

Vol. 2021-October
9781665458283 (ISBN)

Asilomar Conference on Signals, Systems, and Computers
Pacific Grove, USA,

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Signal Processing

Computer Science

DOI

10.1109/IEEECONF53345.2021.9723286

ISBN

9781665458283

More information

Latest update

7/17/2024