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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...
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...
Wireless sensor networks (WSN) continuously enhance processing capabilities and miniaturization. However, there exists a design gap to energy and bandwidth availability. Especially battery technology cannot keep pace with demands of novel versatile services. A common approach for conserving channel capacity and energy is optimizing power-aware routing and different kind of duty cycling (DC) and harvesting...
This paper presents considerations of using wireless sensor networks for monitoring conditions within wind farms, taking into considerations the specific of such applications. In these scenarios, which are intended to cover a lot of ground or even operate in difficult radio environments with strong attenuation, the simple and direct communication between source and destination is not always possible,...
Emergency communication has been intensively investigated for solving suddenly-occurred events of public safety. Wireless network can play an important role of information acquisition and command decision-making in disaster areas, so a new Wireless Emergency Communication (WEC) algorithm is proposed in this paper. This algorithm possesses the characteristics of quick, stability, low energy and high...
This work investigates the energy consumption rate of an energy-constrained wireless sensor network and demonstrates that sensor energy dissipation can be reduced by employing network coding in terms of routing the same amount of sensing data to base stations through theoretical and simulation perspectives. In addition,this work examines the interplays between network parameters such as node density,...
This paper presented a fast fasten control algorithm (2FCA) in wireless sensor networks for information processing and transmitting. Using anycast technology, 2FCA can fast fasten broken routing path, which will decrease failure delay and increase packets' success rate. In the algorithm, it restricts participant nodes to save scarce energy and bandwidth resource, and then prolongs network's lifetime...
Wireless Sensor Networks (WSN) are low power networks which have many small nodes. The nodes are low power sensors interconnected to each other to receive and transmit data from source to sink. By the transferring of data, the power of these nodes reduces and eventually the system dies. In this paper we introduce an efficient load sharing routing technique to increase the life time of all the nodes...
Wireless sensor networks (WSNs) detect and monitor the outside physical state by the sensor nodes organizing automatically. Clustering is a standard approach for achieving efficient and scalable performance in WSNs. In the applications of analysis topology discovering, geography routing, tracking and so forth, we need to resolve how to search for the boundary nodes and form the network boundary. Different...
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,...
Wireless Sensor Networks (WSNs) are vulnerable to attacks (selfish or malicious i.e. misbehaving nodes) due to the nature of the wireless media, restricted resource and the natural co-operations of sensors. Therefore, the security issue is very critical in WSN. The decision making in a WSN is essential for carrying out certain tasks as it aids sensors establish collaborations. In order to assist this...
Current society, Emergency Management System (EMS) widely uses Wireless Sensor Network(WSN) to assure safety. If emergency happens, in dynamically changing environment, real-time property of emergency information should be assured. But conventional approaches which are based on static situations and centralized management can not satisfy this requirement. Thus, we introduce community. Community is...
Wireless Sensor Network (WSN) is widely used in Emergency Management System (EMS) to assure requirement of safety in current society. For centralized management, it is difficult for conventional systems to assure the real-time transmission of emergency information under rapidly changing situations. Thus, based on the Autonomous Decentralized Community (ADC) concept the main route for emergency information...
Wireless sensor networks (WSNs) have recently emerged as suitable data collection tools for both military and civil applications. In an indoor factory monitoring environment sensor relocation and/or addition are necessary with reorganization of production lines and/or starting of new production lines. Due to memory, processing, etc. constraints of the wireless nodes these addition and relocation affect...
Wireless sensor networks can be used to deploy various applications to reflect the circumstance of environment. Video sensors used in wireless multimedia sensor networks (WMSNs) enhance such applications with multimedia data, but with specific characteristics requirement for the network. The aim of this work is to provide reliable data transport with multipath routing and load balancing congestion...
In order to make good use of the limited energy, ant colony optimization (ACO) was applied to inter-cluster routing mechanism. An uneven clustering routing algorithm for Wireless Sensor Networks (WSNs) based on ant colony optimization (ACO) was proposed. The algorithm utilized the dynamic adaptability and optimization capabilities of the ant colony to get the optimum route between the cluster head...
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...
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...
In most of the indoor factory monitoring system sensor relocations and reorganizations are necessary with reorganization of production lines and/or starting of new production lines. These relocations and/or additions sometime make congestion in some area of the network and difficult to achieve online expansion. As a result, in the dynamic changing environment the online expansion is a challenging...
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