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Many research topics in recent years have focused on clustering algorithms as a scalable routing protocol in wireless sensor networks. In these algorithms, by the use of data aggregation techniques and reduction in sensors that should make long distance communications, energy consumption in total network lifetime is decreased. One of algorithms proposed in this field is DECSA. Aiming at the problem...
Lifetime is the most important concern in wireless sensor networks due to limited battery power of sensor nodes. In this paper, we focus on designing an energy-efficient and energy-aware routing algorithm, LLR, to increase the operational lifetime of multi-hop wireless sensor networks in the presence of unreliable communication links. Our proposed protocol utilizes a parameter, Broadcasting Delay,...
In this paper, we consider the the WSNs layering learning routing algorithm of random spread of the nodes. A node routing algorithm is given out by node hierarchical and learning method. When count path of routing by using this algorithm, only a little information between this point and its adjacent points is needed. By using depth-first search strategy and combining node route historical experience,...
In this paper, we study the performance of the Greedy Perimeter Stateless Routing (GPSR) [1] and the Greedy Routing for Maximum Lifetime (GRMax)[2] which is our proposal, in wireless sensor networks in random topology and grid topology wireless sensor network. We decide to compare the performance of GPSR and GRMax in different topology of networks using the same simulation environment. Evaluation...
Prolonged lifetime, improved coverage, and load balancing are important requirements in wireless sensor network applications. In this paper, we propose a new clustering protocol-adaptive clustering algorithm based on energy restriction (ACAER), which periodically selects cluster nodes according to their coverage rate and residual energy. ACAER has no assumptions about the distribution or density of...
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,...
A managed wireless mesh for infrastructure-level, stable regional mesh network has been studied. NerveNet, which we have been proposing, is a concept of future regional platform network that covers local regions and provides various context-aware services with the shared use of sensors and actuators. The managed wireless mesh developed for materializing NerveNet features auto-configuration of multiple,...
Wireless Sensor Networks (WSNs) have undergone tremendous technological advances over the last few years, and a broad range of ubiquitous computing applications have been enabled in the area of distributed sensing and control areas. To fully achieve the potentials of WSNs, designing a reliable and secure routing mechanism becomes critical. The intent of this work is to incorporate theories of trust...
Wireless sensor networks are designed for various applications. Most often, a wireless sensor network will be considered as multi-application or multi-functional. In such network, the routing algorithm which is used to realize the Quality of Service (QoS) requirements must be able to provide the required QoS for different applications. For this reason, we present a new routing algorithm namely RQOD...
This article addresses the problem of performance degradation of wireless sensor networks for scenarios involving data gathering to a small number of node sinks; as the data travel toward a sink, its neighbor nodes experience high loads and congestion. Using CSMA/CA as the basic access protocol, we implemented CoSenS, a collecting and sending burst scheme, on the top of it to address these issues...
Location-based multicast routing (LMR) technique can increase the lifetime and the channel capacity of wireless sensor network (WSN) by reducing the number of duplicated data transmissions and control messages. Previous LMR algorithms can suffer performance deterioration in real deployments because they consider only location of nodes and can transmit packets across concrete walls or other interfering...
Energy consumption is a vital factor in the successful deployment of ad hoc sensor networks because sensor nodes are powered by on board battery which are extremely difficult to be recharged. In this article we have proposed a new routing technique based on the idea of random walk with the objective of saving energy. Our approach is inspired by an existing TDMA like routing protocol. We have given...
Inter-cluster communication technique is drawing immense research interest in recent wireless sensor network (WSN) applications. Since sensor nodes are very much constrained in power supply, extending lifetime of these sensors is essential. On the other hand, it is difficult to provide reliable data transfer in WSNs because of their unreliable link quality and congestion at a cluster head (CH) node...
We propose evolutionary computation to estimate positions of nodes within a sensor network. The approach uses signal strength measurements between nodes and given positions for a subset of these nodes (anchor nodes). The signal strength measurements and routing requests take place simultaneously. A data collecting unit (sink node) receives distance estimates which are input to the evolutionary algorithm...
Cluster heads (CHs) form the backbone of the crucial inter-cluster communication for wireless sensor network (WSN). Due to relaying high data traffic, some of these nodes quickly exhaust their precious energy and increase the risk of node failure. In conjunction with the node failure, data packet loss also occurs in a CH due to congestion and poor link quality. Traditional routing algorithms choose...
Wireless sensor networks (WSNs) consists of unattended sensors with limited storage, energy (battery power) and computation and communication capabilities. So, energy efficiency is one of the most important requirements for wireless sensor networks. This paper firstly makes a summary to power control and the existing routing metrics then finds the several key characteristics of wireless sensor networks...
Wireless sensor networks offer a practical and economically viable alternative to manual data gathering in general and military scenarios, providing a means of surveillance of a region of terrain and providing warning of any threats. However, in hostile scenarios, the network is likely to come under attack from malicious entities which seek to compromise routing diversity in these environments. This...
Mesh is a network topology that achieves high throughput and stable intercommunication. With great potential, it's expected to be the key architecture of the future network. Wireless sensor networks are an active research area with numerous workshops and conferences arranged each year. This paper designs a new routing metric for wireless mesh sensor networks on the study of traditional metrics. Results...
In the area of wireless sensor networks, achieving minimum energy consumption is a very important research issue. At present, a number of energy efficient protocols have been proposed, mostly based on a layered design approach, which means that they are focused on designing optimal strategies for single layer only. In this paper, we present a cross-layer cluster scheme by optimizing the routing and...
Since the nodes in wireless sensor networks operate on limited power, it is an important issue to design efficient data gathering scheme that can save energy while meeting the needs of application. In this paper, we propose an energy-efficient cluster-based data gathering protocol (ECDGP). ECDGP uses a new clustering algorithm based on belief degree for clusterhead election. Furthermore, ECDGP selects...
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