Alternative Path Communication in Wide-Scale Cluster-Tree Wireless Sensor Networks Using Inactive Periods

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Leao, E (Autor) Outra; Montez, C (Autor) Outra; Moraes, R (Autor) Outra; Paulo Portugal (Autor) FEUP; Francisco Vasques (Autor) FEUP

Revista

Título: Sensors

Vol. 17

Página Final: 1049

ISSN: 1424-3210

Editora: MDPI

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-00M-R0D

DOI: 10.3390/s17051049

Abstract (EN): The IEEE 802.15.4/ZigBee cluster-tree topology is a suitable technology to deploy wide-scale Wireless Sensor Networks (WSNs). These networks are usually designed to support convergecast traffic, where all communication paths go through the PAN (Personal Area Network) coordinator. Nevertheless, peer-to-peer communication relationships may be also required for different types of WSN applications. That is the typical case of sensor and actuator networks, where local control loops must be closed using a reduced number of communication hops. The use of communication schemes optimised just for the support of convergecast traffic may result in higher network congestion and in a potentially higher number of communication hops. Within this context, this paper proposes an Alternative-Route Definition (ARounD) communication scheme for WSNs. The underlying idea of ARounD is to setup alternative communication paths between specific source and destination nodes, avoiding congested cluster-tree paths. These alternative paths consider shorter inter-cluster paths, using a set of intermediate nodes to relay messages during their inactive periods in the cluster-tree network. Simulation results show that the ARounD communication scheme can significantly decrease the end-to-end communication delay, when compared to the use of standard cluster-tree communication schemes. Moreover, the ARounD communication scheme is able to reduce the network congestion around the PAN coordinator, enabling the reduction of the number of message drops due to queue overflows in the cluster-tree network.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 36