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Technology of wireless sensor networks has grown thanks to technological developments in different areas related to microelectronics. However, to become truly ubiquitous, these networks must overcome a number of challenges such as resource constraints (energy, memory, etc.), quality of service (bounded transmission delays), etc. It follows that the energy(More)
— Applying real time applications with deadline guarantee for Ad Hoc network seems to be a difficult challenge and to be an impossibility in general. This is due to the features of such networks. However, if we make an assumption on node mobility, traffics and reliability with predictable features, we can get real time guarantee. That is the goal of our(More)
The Wireless Sensor Networks (WSN) particularly for real time applications raise fundamental problems for the scientific community. These problems are related to the limit of energy resource and the real time constraints on the communication delay. The well functioning of such networks depends mainly on the network lifetime result of nodes energies and the(More)
Providing Quality of Service in the Ad hoc networks is one of the topics that have received a lot of attention recently. The most common QoS solution presented in the literature is the reservation method. It consists of making resources reservation for the flows which have QoS requirements. In this paper, we propose a novel reservation approach for the(More)
Thanks to recent technological improvements, new products using the Wireless Sensor Networks (WSNs) are used to control some real world physical phenomena. A wireless sensor network consists of a large number of nodes with limited energy source. Lifetime of such a network is strongly dependent on the lifetime of its nodes' batteries. However, to(More)