Max-Min Fairness in WMNs with Interference Cancelation Using Overheard Transmissions

Mateusz Żotkiewicz

doi:10.1155/2014/625642

Abstract

We show an impact of using interference cancelation mechanisms for signals that have been overheard in the past on performance of fair wireless mesh networks. In our research we show that even in those very restricted conditions and max-min cost function, the idea of interference cancelation can significantly increase the capacity of such networks. In order to approximate possible advantages of using interference cancelation in the considered conditions, we propose a novel MIP model that allows for calculating perfect scheduling and maximal throughput in a network. We compare the results with cases when the interference cancelation mechanisms are disabled. Our results show that using interference cancelation mechanisms for signals that have been overheard in the past increases a network throughput by 40% on average in approximately 20% of test cases.

Highlights

Mesh networking in wireless communications is a way to increase network capacity, for example, with respect to singlehop cellular networks, through using short-distance radio links of relatively high capacity and establishing point-topoint connections on multi-hop routes
Our results show that using interference cancelation mechanisms for signals that have been overheard in the past increases a network throughput by 40% on average in approximately 20% of test cases
Our results show that using interference cancelation mechanisms in the restricted conditions increases a network throughput by 40% on average in approximately 20% of test cases

Summary

Introduction

Mesh networking in wireless communications is a way to increase network capacity, for example, with respect to singlehop cellular networks, through using short-distance radio links of relatively high capacity and establishing point-topoint connections on multi-hop routes. In this way packets from an origin are relayed by intermediate nodes on their way to a destination. In our research we show that even in this very restricted conditions the idea of interference cancelation can significantly increase the capacity of a wireless mesh network.

Interference Canceling

Optimization Model

V: Set of mesh nodes E

Numerical Results

Conclusion