Age of information without service preemption

04/16/2021
by   George Kesidis, et al.
0

When designing a message transmission system, from the point of view of making sure that the information transmitted is as fresh as possible, two rules of thumb seem reasonable: use small buffers and adopt a last-in-first-out policy. In this paper, we measure freshness of information using the "age of information" performance measure. Considering it as a stochastic process operating in a stationary regime, we compute not just the first moment but the whole marginal distribution of the age of information (something important in applications) for two well-performing systems. In neither case do we allow for preemption of the message being processed because this may be difficult to implement in practice. We assume that the arrival process is Poisson and that the messages have independent sizes (service times) with common distribution. We use Palm and Markov-renewal theory to derive explicit results for Laplace transforms. In particular, this approach can be used to analyze more complex last-in-first-out systems with larger buffer sizes.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
04/11/2019

The distribution of age-of-information performance measures for message processing systems

The idea behind the recently introduced "age of information" performance...
research
12/08/2022

Age of Information with On-Off Service

This paper considers a communication system where a source sends time-se...
research
06/15/2021

Age of Information for Small Buffer Systems

Consider a message processing system whose objective is to produce the m...
research
04/23/2021

Age of information distribution under dynamic service preemption

Age of Information (AoI) has emerged as an important quality-of-service ...
research
08/01/2018

Average age of coupon type and related average age of information

We consider two types of problems associated with a bufferless server wi...
research
06/28/2019

Towards Assigning Priorities in Queues Using Age of Information

We consider a priority queueing system where a single processor serves k...
research
01/15/2019

Reducing Age-of-Information for Computation-Intensive Messages via Packet Replacement

Freshness of data is an important performance metric for real-time appli...

Please sign up or login with your details

Forgot password? Click here to reset