Latency Analysis of Systems with Multiple Interfaces for Ultra-Reliable M2M Communication

TL;DR

This paper presents an analysis framework for integrated multi-interface communication systems aimed at ultra-reliable low latency M2M applications, combining reliability models with latency distributions and accounting for failure correlation.

Contribution

It introduces a novel analytical model that estimates latency and reliability of multi-interface systems, including failure correlation, validated through simulation.

Findings

Achieves up to 99.999% reliability with fiber and cellular technologies.

Packet splitting significantly reduces latency while maintaining 99.99% reliability.

Model validation confirms accuracy of the analytical approach.

Abstract

One of the ways to satisfy the requirements of ultra-reliable low latency communication for mission critical Machine-type Communications (MTC) applications is to integrate multiple communication interfaces. In order to estimate the performance in terms of latency and reliability of such an integrated communication system, we propose an analysis framework that combines traditional reliability models with technology-specific latency probability distributions. In our proposed model we demonstrate how failure correlation between technologies can be taken into account. We show for the considered scenario with fiber and different cellular technologies how up to 5-nines reliability can be achieved and how packet splitting can be used to reduce latency substantially while keeping 4-nines reliability. The model has been validated through simulation.