How to Choose the Relevant MAC Protocol for Wireless Smart Parking Urban Networks?

Parking sensor network is rapidly deploying around the world and is regarded as one of the first implemented urban services in smart cities. To provide the best network performance, the MAC protocol shall be adaptive enough in order to satisfy the traffic intensity and variation of parking sensors. In this paper, we study the heavy-tailed parking and vacant time models from SmartSantander, and then we apply the traffic model in the simulation with four different kinds of MAC protocols, that is, contention-based, schedule-based and two hybrid versions of them. The result shows that the packet interarrival time is no longer heavy-tailed while collecting a group of parking sensors, and then choosing an appropriate MAC protocol highly depends on the network configuration. Also, the information delay is bounded by traffic and MAC parameters which are important criteria while the timely message is required.Comment: The 11th ACM International Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (2014

Réseau de capteurs sans fil distribués pour le monitoring des activités de vie au sein d'une maison intelligente

International audienceCe projet consiste à développer des modules capteurs/actionneurs communicants sans fil autonomes en énergie avec la fonction de mesurer des paramètres d’activités au sein d’un domicile et d’assurer au moyen d’un contrôleur de dialogue une interaction intuitive et adaptée pour le pilotage des équipements. Le réseau de capteurs est basé sur des modules génériques WiNo conçu de façon à pouvoir s’interfacer avec les équipements d’un habitat. L’interaction avec l’utilisateur s’effectue via une tablette tactile. L’article présente les éléments du système et les premières implémentations au sein d’une maison intelligente

Prototyping and Performance Analysis of a QoS MAC Layer for Industrial Wireless Network

Today's industrial sensor networks require strong reliability and guarantees on messages delivery. These needs are even more important in real time applications like control/command, such as robotic wireless communications where strong temporal constraints are critical. For these reasons, classical random-based Medium Access Control (MAC) protocols present a non-null frame collision probability. In this paper we present an original full deterministic MAC-layer for industrial wireless network and its performance evaluation thanks to the development of a material prototype.Comment: 7th IFAC International Conference on. Fieldbuses and nETworks in industrial and embedded systems, Toulouse : France (2007

Performance analysis of 802.15.4 wireless standard

none3Emanuele, Losavio; Orcioni, Simone; Conti, MassimoEmanuele, Losavio; Orcioni, Simone; Conti, Massim

Análisis del rendimiento de redes basadas en el estándar IEEE 802.15.4

El artículo presenta un análisis del rendimiento en redes inalámbricas soportadas en el estándar IEEE 802.15.4, el estudio es basado en las medidas del tiempo de latencia, tomado en diferentes topologías de redes en la banda de frecuencia de 2400 MHz, en un ambiente edificado. Este análisis sigue los conceptos de tiempo de espera: en la interfaz serial, en la capa MAC, en la capa física y debido a la influencia de otras estaciones en un entorno equiprobable. Finalmente, se proponen modelos estadísticos del comportamiento del tráfico, estos modelos pueden ser utilizados para determinar el número máximo de dispositivos y de enrutadores que se deben conectar a una red sin afectar las exigencias del tráfico, brindando una herramienta para dimensionar y planificar redes basadas en esta tecnología.We present a performance analysis supported by IEEE 802.15.4 standard for wireless networks. The analysis was performed in different network topologies in the frequency band of 2400 MHz for indoor environments, taking into account latency measurements. Our aproach considers the timeout in: the serial interface, the MAC layer, the physical layer and the influence of other workstations that have the same probabilities of network access. Finally, we propose statistical models of traffic behavior; these models can be used to determine the maximum amount of devices and routers that must be connected to the network without affecting traffic demands. Our methodology represents a tool to size and plan networks based on IEEE 802.15.4 standard