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Journal of Computer Networks and Communications
Volume 2019, Article ID 7059401, 10 pages
https://doi.org/10.1155/2019/7059401
Research Article

A Simple and Efficient Way to Save Energy in Multihop Wireless Networks with Flow Aggregation

LRI (Laboratoire de Recherche en Informatique), University Paris Sud, CNRS, University Paris-Saclay, 91405 Orsay, France

Correspondence should be addressed to Alexandre Laube; rf.irl@ebual.erdnaxela

Received 18 February 2019; Revised 5 September 2019; Accepted 20 September 2019; Published 10 October 2019

Academic Editor: Djamel F. H. Sadok

Copyright © 2019 Alexandre Laube et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Today, whether in industry, research, or civil applications, there are many incentives to reduce the energy footprint of automated systems. In multihop wireless networks, the main objective in that regard is usually to maximize the lifetime of the network by distributing the load over all nodes. In this paper, we improve a solution that aggregates flows to optimize the number of nodes that can be turned off. We introduce interference awareness in a routing metric designed to aggregate flows to avoid overloading the network and to preserve the quality of service required by the flows. This way, it becomes possible to integrate this metric into classical shortest path routing algorithms that do not consider interference. We also show that flow aggregation and overall energy consumption are equivalent problems.