Delay and Backlog Analysis for 60 GHz Wireless Networks

TL;DR

This paper develops a mathematical framework to analyze delay and backlog in 60 GHz wireless networks, enabling better design and optimization for high-throughput, low-latency communication systems.

Contribution

It introduces a novel MGF-based method to characterize the service process of 60 GHz channels and derive probabilistic delay and backlog bounds.

Findings

60 GHz networks can meet strict QoS requirements.

The proposed bounds are validated through simulations.

Numerical analysis shows the impact of different parameters.

Abstract

To meet the ever-increasing demands on higher throughput and better network delay performance, 60 GHZ networking is proposed as a promising solution for the next generation of wireless communications. To successfully deploy such networks, its important to understand their performance first. However, due to the unique fading characteristic of the 60 GHz channel, the characterization of the corresponding service process, offered by the channel, using the conventional methodologies may not be tractable. In this work, we provide an alternative approach to derive a closed-form expression that characterizes the cumulative service process of the 60 GHz channel in terms of the moment generating function (MGF) of its instantaneous channel capacity. We then use this expression to derive probabilistic upper bounds on the backlog and delay that are experienced by a flow traversing this network, using results from the MGF-based network calculus. The computed bounds are validated using simulation. We provide numerical results for different networking scenarios and for different traffic and channel parameters and we show that the 60 GHz wireless network is capable of satisfying stringent quality-of-Service (QoS) requirements, in terms of network delay and reliability. With this analysis approach at hand, a larger scale 60 GHz network design and optimization is possible.