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Recent advances in technology propelled the development of resource constrained tiny devices and the concept of Internet of Things (IoT). Potential applications spanning various fields of science from environmental to medical have been emerged. Different architectures, routing protocols, performance issues and goals have been suggested. In this work, we review fundamental concepts, recent developments...
The paper will develop a wireless sensor network suitable for the medical scene of smart community for the elderly in the community to provide quality health care services for the elderly. The project will improve positioning accuracy of the elderly in the smart community through the study of positioning algorithm. Meanwhile, the project will design a routing protocol most appropriate for medical...
Nowadays Wireless sensor network achieve much attention due to its several real time applications like in military works, fire detection, temperature sensing etc. Sensor nodes are randomly distributed in the network and have limited energy. Due to this energy constraint, efficient routing protocol comes into picture. A sensor node senses the environment and generated the data. It sends the data to...
Mobile Wireless sensor network consist of number of sensor nodes and each node works on limited battery life. Several factors like routing protocol, nodes mobility and energy can affect the performance of a WSN. This paper presents fuzzy rule based simulation system for WSN to predict the node's mobility and energy. Mobility prediction provides stable path for network and energy prediction increases...
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Mobile wireless sensor network is one of the intensifying and emerging technologies for various application of new generation networks, the massive concerns of these networks are data gathering with energy efficiency. Cluster formation system, randomly selection of cluster heads to equally balance the energy consumption among the sensor nodes and finally forward the data collected by admin node to...
Wireless sensor network can be applied in several part of real world. For efficient use of energy, we propose hop by hop routing method with cluster heads. Cluster head is selected distributed manner in a same hop count. For high probability of upstream cluster head within transmission range, we use reduced transmission range to calculate hop count.
Location based protocols use the information of node's position to route the data. Routing the data in this case does not mean choosing the shortest path. It means choosing the available path based on the location information, this is one of the reasons that these protocols may fail the routing task in mobile Ad-hoc Networks (MANET) where the mobility of the nodes and the dynamic topology makes the...
A wireless sensor network could be either homogeneous network or heterogeneous network. Depending upon the nature of application requirements a wireless sensor node could either be static or mobile one. When the nodes are static, data collection by the sink from various sources will be difficult and time consuming process. Also static deployment of sink as well as source nodes lead to energy hole...
A Wireless Sensor Network (WSN) is a cluster of sensor nodes where each sensor node has capability to monitor, measure and disseminates the data to the neighboring node. Collected data is normally forwarded to base station for analysis and processing. Many protocols for network with static sink are available in literature. However, WSN with mobile sink(s) is the contemporary research issue amongst...
In this paper, we design a novel lightweight ring-based routing protocol (LRRP) for wireless sensor network with mobile sinks (mWSN). The design objective is to significantly reduce the protocol overhead for route discovery and management while preserving high routing performance. For this purpose, LRRP builds a base ring by finding a shortest cycled path surrounding an artificially created topological...
Sink Mobility is becoming popular due to excellent load balancing between nodes and ultimately resulting in prolonged network lifetime and throughput. A major challenge is to provide reliable and energy-efficient operations are to be taken into consideration for different mobility patterns of sink. Aim of this paper is lifetime maximization of Delay Tolerant Wireless Sensor Networks (WSNs) through...
This paper describes the main features of an advanced communication model aimed to enhance the protection of critical energy assets against man-made attacks (terrorism) or natural disasters. The proposed model is based on a hybrid network architecture, which combines the advantages of different wireless technologies, such as Delay/Disruption Tolerant Networking, Mobile Ad-hoc Networks, and Wireless...
Mobility poses many challenges to the routing protocols used in Wireless Sensor Networks. In this paper we evaluate the performance of the Collection Tree Protocol (CTP) when used in a mobile scenario. The simulation study shows that CTP performs poorly in a mobile scenario because of the frequent tree re-generation process resulting from the nodes' movements. The result is that there is a need for...
Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. In this paper, we investigate how the sensor network performs in the case when three events move with special movement path. We compare the simulation results for three cases: stationary, random and simple...
This paper presents a cross-platform solution of smartphone-based mobile sink for wireless sensor networks, named uSink. With a cross-platform SD card, named uSD card, any smartphone with SD interface can be empowered with the capability to communicate with wireless sensor nodes. Furthermore, a middleware on mobile phone, named uSinkWare, is also designed to provide a typical mobile sink's functionalities,...
In WSN, sensors near the sink have to relay the data of the nodes away from the sink and as a result they drain their energy very quickly. It result in network partitioning and can significantly limit the network lifetime. This problem is termed as hotspot problem. Recently, formation of hot spot or energy hole near the sink has emerged as a critical issue for data gathering in WSN. In this paper,...
Wireless Sensor Networks (WSN) are applicable in vast range of applications and depending on the application the sink could be mobile or stationary. Sink mobility has been shown to improve network lifetimes [1], however mobile sink has to periodically update network about its changing position. This control traffic is non-negligible for low power, limited capacity sensors and induces energy consumption...
Wireless sensor networks with mobile sinks (mWSN) have attracted a lot of attention recently. In an mWSN, each mobile sink can move freely and unpredictably. In this paper, we design two efficient data gathering protocols for mWSNs. The first protocol (called AVRP) adopts Voronoi scoping plus dynamic anchor selection to handle the sink mobility issue. In the second protocol (called TRAIL), the trail...
In Wireless Sensor Networks (WSN), data gathering using mobile sinks typically incurs constant propagation of sink location indication messages to guide the direction of data reporting. Such behavior is undesirable, especially when the sensor network scale increases, as frequent message flooding will cause serious congestion in network communication and significantly impair the sensor network lifetime...
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