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In this paper, we propose an effective data communication scheme for wireless sensor networks. The data communication approach makes efficient use of data compression to achieve energy efficiency. The main contribution of the proposed approach is, it makes use of the simple but efficient representation of value pairs to attain the compression. It is also novelty of our approach that, proposed scheme...
In this paper, we study the problem of data acquisition in wireless sensor networks (WSNs). A recently revitalized technique called compressive sensing (CS) has presented a new method to capture sparse signals at a rate below Nyquist. There are drawbacks to directly applying the existing CS algorithm to WSNs, which are mainly due to the fact that CS requires a large number of inter-communications...
Wireless sensor networks are used in many real-time applications. Sensor nodes are deployed for a wide range of environmental monitoring applications. In order to constrain communication overhead, dense in the network, these sensor nodes are called event source. The nodes distributing queries are called the query sources. This system describes and evaluates through simulation a scheme called Rumor...
Admission control plays an important role in providing Quality of Service (QoS) guarantees for wireless mesh networks (WMNs). Multipath routing can improve network performance in reliability and load balancing. However, when the multipath routing are adopted in 802.11-based WMNs, the transmission with bandwidth assurance is facing rigorous challenges. In this paper, a novel joint design of multipath...
Rumor Routing is one of the routing algorithm categories in wireless sensor networks which is well extended and optimized in the recent years. Common principal ideas in all rumor routing algorithms are conjunction of query-agents with the traversed path of event information propagator agents in the network. In this paper we propose a new method to reduce the number of routing agents to consequently...
Agro-meteorological parameters monitoring plays an important role in orchard management. For a project named `Digital Orchard' funded by local provincial government of China, a wireless sensor network was designed and developed with the aim of remote real-time monitoring and collecting of soil and atmospheric data. The system utilizes a wireless technology for data communication and data transmission...
With routing paths being modified after each sink movement, delivering data to a mobile sink in a wireless sensor network (WSN) can be a challenging issue. Updating the sink location with messages to maintain a route frequently could result in great energy consumption in the sensors. Moreover, the number of message collisions is proportional to the control overhead of the sink location update. This...
In this paper we have addressed the problem of deploying wireless sensors into any random irregular sensing terrain. Traditional deployments often assume homogeneous environments, which ignore the effect of terrain profile as well as the in-network obstacles situated randomly like buildings, trees, roads and so on. Only an effective and efficient deployment of nodes will leads to proper routing as...
In this paper, we focus on minimum cost routing in the Wireless Sensor Networks (WSNs). In-network data is often routed in such a way that it can minimize overall energy consumption or it can maximize the network lifetime. However, these metrics do not take into account other costs such as queueing delay and congestion. We solve the problem by introducing a comprehensive cost function and formulating...
This paper proposes a novel Energy-Efficient Event- Driven (ESED) routing and data dissemination paradigm to address an open problem of wide interest in wireless sensor networks: the routing and data dissemination design for the applications with an event-driven data delivery model when geographic information is not available. ESED not only addresses the characteristics of such kind of applications,...
In this paper, we formulate coverage requirements of the sensor network as a minimum-cost connectivity guaranteed point k-coverage problem. An improved ant colony algorithm (EasiDesign) is proposed to achieve the approximate solution to this optimization problem. We made modifications in the convergence strategy and the ant state transition rule of the general ant colony optimization. Considering...
We study the problem of computing an energy-efficient data delivery scheme in wireless sensor networks that leverages the knowledge of a set of trajectories of mobile sinks in the network to route data from the sensors to the mobile sinks. Sensors collect data from the environment and instead of directly sending them to the mobile sinks (henceforth simply “sinks”), they route data to a number of selected...
A wireless mesh network (WMN) has been popularly researched as a wireless backbone for Internet access with off-the-shelf and inexpensive equipments. Nowadays, several applications like contents sharing, multicast video streaming, vehicular networks encourage to build mesh networks in urban areas. However, the deployment of WMNs in unlicensed bands of dense urban areas imposes many challenges. While...
In this paper we explore the mobility of a mobile sink in a wireless sensor network (WSN) to prolong the network lifetime. Since the mechanical movement of mobile sink is driven by petrol and/or electricity, the total travel distance of the mobile sink should be bounded. To minimize the data loss during the transition of the mobile sink from its current location to its next location, its moving distance...
Tracking and classification application are among the most important applications for wireless sensor networks. To further enhance the tracking accuracy and reduce the conserved power, multiple targets tracking at the same time should be considered. This paper addresses the problem of dynamically query sensors, route data from multiple moving targets in a network so that the information gain is maximized...
Power aware routing in Wireless Sensor Networks (WSNs) focuses on the crucial issue of extending the network lifetime of WSNs, which are limited by low capacity batteries. However, most of the previously proposed power aware routing algorithms have an inherent problem, which is the isolation of the sink node due to the quick power exhaustion of nodes that are close to the sink. In this paper, we propose...
IEEE 802.15.4 multi-hop wireless networks are an important communication infrastructure for many applications, including industrial control, home automation, and smart grids. Existing analysis of the IEEE 802.15.4 medium access control (MAC) protocol are often based on assumptions of homogeneous traffic and ideal carrier sensing, which are far from the reality when predicting performance for multi-hop...
Compressed sensing (CS) is a novel theory based on the fact that certain signals can be recovered from a relatively small number of non-adaptive linear projections, when the original signals and the compression matrix own certain properties. In virtue of these advantages, compressed sensing, as a promising technique to deal with large amount of data, is attracting ever-increasing interests in the...
Since we are not able to replace the battery in a wireless sensor network, energy and lifetime are the most important parameters. Common sensors are not able to connect directly with the central station due to their limited ranges in asymmetrical wireless networks, therefore, we utilize super nodes. A super node has more energy, processing power and a wider range of communication. It does connectivity...
Wireless Sensor Networks (WSNs) are widely used in various applications for tracking or surveillance purposes. Border security monitoring and terrorist attack prevention are just two of many crucial homeland security applications which rely upon WSN technologies. In these applications, a great amount of sensors powered by batteries are deployed in a particular region. They detect events, process and...
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