Analysis of Secondary Effects in Roadside mmWave Backhaul Networks

TL;DR

This paper investigates secondary interference effects in urban mmWave backhaul networks with a triangular-wave topology, demonstrating that such effects have minimal impact on network performance through analysis and evaluation.

Contribution

It provides the first detailed analysis of secondary interference effects like side-lobe and reflection impacts in this specific mmWave backhaul topology.

Findings

Secondary effects cause minimal performance degradation.

Triangular-wave topology enhances network survivability.

Analytical and simulation results confirm low interference impact.

Abstract

To achieve high survivability of mmWave wireless backhaul networks, deploying mmWave nodes on regularly-spaced lampposts in urban environment according to a triangular-wave topology is a promising approach, because the primary interference among the links on a path of mmWave nodes (referred to as self interference) can be eliminated, thereby maximizing end-to-end throughput. Besides, another advantage of this topology is the ability to reconfigure it to avoid obstacles that might occur along the roadway. Based on this network architecture, this work provides detailed analyses on the interference caused by secondary effects, which includes side-lobe effects and reflection effects. Through both analytical modeling and extensive evaluations, we show that the interference caused by secondary effects has only a very small impact on the network performance with the considered backhaul network architecture.