Title
Scheduling to Minimize Age of Information with Multiple Sources
Abstract
Finding an optimal/near-optimal scheduling algorithm to minimize the age of information (AoI) in a multi-source G/G/1 system is well-known to be a hard problem. In this paper, we consider this problem for the non-preemptive setting, where an algorithm is free to choose which update to transmit, but an update under transmission is not allowed to be preempted. For this problem, we propose a novel randomized scheduling algorithm and show that its competitive ratio is at most 3 plus the maximum of the ratio of the variance and the mean of the inter-arrival time distribution of sources. Notably, the competitive ratio is independent of the number of sources, or their service time distributions. For several common inter-arrival time distributions such as exponential, uniform and Rayleigh, the competitive ratio is at most 4.
Year
DOI
Venue
2022
10.23919/WiOpt56218.2022.9930540
2022 20th International Symposium on Modeling and Optimization in Mobile, Ad hoc, and Wireless Networks (WiOpt)
Keywords
DocType
ISBN
age of information,scheduling,competitive ratio
Conference
978-1-6654-6076-7
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Kumar Saurav100.34
Rahul Vaze246345.64