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Wireless sensor networks enable the development and implementation of a wide range of applications related to home automation, environmental, safety, health, industrial environments and monitoring. However, there are still some application areas that have not been addressed efficiently, such as wireless sensor networks capable of operating in noisy environments. These operating conditions adversely...
The Wireless Sensor Networks (WSNs) are composed of small sensor nodes capable of sensing (collecting), processing and transmitting data related to some phenomenon in the environment. Despite the numerous possibilities of use, the WSN has serious constraints, mainly related to the energy consumption during data transmission. These constraints require the implementation of enhancements in routing protocols...
Wireless Sensor Network (WSN) is a group of spatially distributed sensor nodes and is self organized and autonomous in nature. They are connected by wireless links. Routing in wireless sensor network is quite different from traditional wireless network, due to limitations of wireless sensor network. To overcome some of the limitations, UDP is being used for connection establishment, compromising the...
The popularity of Wireless Sensor Network (WSN) has increased tremendously in recent times. WSN connects the physical world with the virtual world by forming a network of sensor nodes. In a sensor network the sensor nodes sense the data within their sensing range. Each node has limited energy which is used in transmitting and receiving the data thus energy preservation is most important for the survival...
Wireless Sensor Network (WSN) is getting famous by its implementation and research exponentially in current time. Sensors can be configured on the basis of condition & when condition matches to the sensor then sensor collects some information. This information is transferred to the base station (BS). The data routing is performed by routing protocols. There are various types of routing protocols...
Wireless Sensor Networks raise a growing interest among industries and civil organizations where monitoring and recognition of physical phenomena are a priority. Their possible applications are extremely versatile and are expected to be intensely applied in different domains such health, agriculture, habitat monitoring, routing traffic, security and military. WSN represent a significant technology...
In the recent years, Wireless Sensor Networks (WSNs) have become a great field of interest for scientific community. This kind of network provides a panoply of applications in different areas of human life. However WSNs must ensure the quality of service (QoS) to give the requested performance for the final user. Among different issues presented in the literature to provide high QoS, multipath routing...
Typically, wireless sensor network (WSN) uses static sinks to gather sensor data. However, it brings not only excessive sink installation cost but also energy-hole problem. In this paper, we consider data acquisition with guaranteeing latency in WSN by multiple mobile sinks. In particular, we optimize the number of sinks as well as the itinerary of each sink for this problem such that the total cost,...
The contribution of this article is two local recovery methods that may reduce overhead and make a more immediate reconnection of disconnected nodes compared to the soft state global recovery method applied in WSNs running RPL [1]. In addition, we perform an analysis of the implication to better judge the context where local recovery methods should be used. One of our suggested methods is based on...
Currently, various irrigation practices like localized irrigation, usage of sprinklers and sub-irrigation are being used while facilitating plant growth and conserve water. By making use of wireless sensor network (WSN) nodes in irrigation, a farmer can locate the specific areas, which need to be irrigated with limited amount of water and thereby avoid over irrigation and conserve water. This work...
Wireless Sensor Network (WSN) is one of the most demanding research topics prevalent in the modern research domain. WSN consists of densely deployed sensor nodes in the area which is to be sensed or monitored. Every tiny sensor node needs to transmit the sensed data to more powerful sink nodes. Sensed data may reach sink node through multiple hops. As the sensor nodes are resource constrained, most...
By way of reducing the active time of sensor nodes, this paper proposed an energy efficient data convergence model which is adaptable for cold chain application. The model runs on hierarchical wireless sensor network architecture, which aims at finding an optimal sleep/wake up schedule that can coordinate the data sending time slot for both cluster nodes and routing nodes. It can avoid data re-transmission...
Energy consumption represents a key element in the Wireless Sensor Networks (WSNs) design. Several factors can cause energy over consumption such as mobility, node position (relay or gateway), retransmissions... The network topology can also be a major cause of energy waste: a transmission in 1-hop requires a high energy, a transmission in K-hops requires a lower energy, even though, it can damage...
Wireless sensor networks (WSNs) face a number of security challenges that can compromise their operation. A typical security attack that can be launched by an adversary, in order to affect the network's communication, is the selective forwarding attack. If compromisation occurs, it is essential to recover the network to a stable state. In the context of mission-critical WSNs the challenge is not just...
Wireless Sensor Network (WSN) is multiple hops network. Nodes near sink are required to transmit a large amount of data and expend energy rapidly. These nodes die early and outer nodes can not send data to sink. Therefore the network dies early with much unused energy. This phenomenon is called energy hole. Aiming at energy hole problem of WSN, a novel solution is proposed in this paper. According...
Wired network nodes have direct connection with the power source. But wireless sensor nodes depend on the on-board battery for power. Two different things can be done to increase the operational lifetime of the WSN. First one is efficient energy utilization. Second one is attachment of power generating devices. This paper proceeds with efficient energy utilization by proposing a new multipath routing...
Wireless multimedia sensor networks (WMSNs) is one of the hotest topic nowadays which attracts more and more researchers as being an interdisciplinary research interest. Its cost decreases continously due to advances in micro-electromechanical systems, and the proliferation and progression of wireless communications. However, the transmission of multimedia information must satisfy QoS criteria which...
In a wireless sensor network (WSN) platform, there are always many different applications. These applications usually have different quality of service (QoS) requirements. However, in most situations, these different requirements cannot be satisfied simultaneously in the same platform. In this paper, based on the concept of potential in physics, we propose DRRP, a routing algorithm with the ability...
The devices composing Wireless Sensor Networks (WSN) are very limited in terms of memory, processing power and battery. We need efficient routing algorithms to ensure a long lifetime of the WSN. However, many solutions focus on minimizing the average energy consumption of all the nodes. Since the lifetime is rather given by the death of the first node or by the disconnection of the network, these...
Network lifetime has become the key characteristic for evaluating sensor networks in an application-specific way. In this paper, we focus on Mobile Wireless Sensor Networks, which are specific opportunistic networks because of their poor connectivity among the mobile sensors, and thus it is difficult to form a well connected mesh network for transmitting data through end-to-end connections from the...
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