Wireless Sensor Network (WSN) have been attracting increasing interest for supporting a
new generation of ubiquitous computing systems with great potential for many applications …

In wireless sensor networks, one of the key challenges is to achieve minimum energy
consumption to maximise network lifetime. In fact, lifetime depends on many parameters: the …

Abstract Wireless Sensor Networks (WSN) particularly for real time applications raise
fundamental problems for the scientific community. These problems are related to the limit of …

Sinks usually broadcast their addresses for data collection in sensor networks. However, this
common operation opens up vulnerability for adversary to attack the sinks and obstruct their …

Data gathering is a fundamental operation in wireless sensor networks in which data
packets generated at sensor nodes are to be collected at a base station. In this paper we …

A Wireless Sensor Network (WSN) consists of several sensor nodes with limited energy
source. Lifetime of such network depends on the residual energy of its nodes. However, to …

Over the past years, wireless sensor systems have picked up a global consideration from
both the researchers and the genuine clients. It includes a large number of sensing devices …

In this work we consider routing and sink location problems in sensor networks and propose
two new mixed integer programming formulations to determine optimal sink locations and …

The sensor networks raise fundamental problems for the scientific community. These
problems are due to the wireless communications, the density of nodes distribution, the …

Data gathering is a fundamental operation in wireless sensor networks in which data
packets generated at sensor nodes are to be collected at a base station. In this paper we …