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Wireless sensor network is one of the effective tools for data gathering in a variety of environments which has a lot of challenges. Controlling the congestion is one of the challenges that primarily depends on the way the large number of sensors in a network are organized and controlled. A group of nodes is called a cluster which sends information to the gateway through the cluster head. This structure...
E-Health systems need to dynamically integrate a huge variety of medical sensors in order to provide a meaningful survey of a patient's condition. Devices like smart phones or gateways usually used as integrators, often underlie resource constraints and have to cope with the mobility of the patient. Therefore it is difficult to realize an overall integration middleware, that allows to handle a sufficient...
Wireless Sensor Networks (WSNs) consume a lot of energy in infrastructure creation and maintenance which also include topology control, i.e., coverage and connectivity. Several sleep-based topology control protocols have been proposed for better performance. While the existing protocols serve their purpose, they still consume high energy. We propose an energy-efficient protocol for Coverage, Connectivity...
Ad hoc networks have increasing come into use for emergency management both as aid to detect the occurrence of a disaster and as a means to communicate in the aftermath of one. The use of sensor networks, a category of ad hoc networks, for environmental sensing can allow planning well ahead of a disaster's occurrence. The authors propose a routing architecture for sensors used in emergency management...
Application driven wireless sensor network (WSN) has a great prospect, interconnecting WSN to current network infrastructure is the research hotspot. An interconnection method is proposed, which connected large-scale WSN to Internet based on IPv6. To satisfy application requirements, IPv6 address is mapped based on geography location in WSN, and a geography location routing protocol named as clockwise...
We describe the design of a large-scale wireless sensor network for agriculture monitoring. We have deployed a prototype of 64 sensors to monitor a commercial vineyard. The system provides different software modules ranging from filtering raw data to a centralized and a distributed data storage applications. The used protocols ensure reliable and robust communication and load-balancing energy consumption...
Modern battlefields represent complex network scenarios that include different networking domains, which need to communicate. These domains include different military entities,such as various allies armies, forces of the same army, mobile objects, for example tanks, vehicles, soldiers, flying vehicles, etc., that need to communicate quickly and will minimum of overhead, in order to accomplish their...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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