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Nowadays, wireless sensor networks attract researchers because of their popular applications in the military, communications, intelligence and medical aspects of vitality. Wireless networks can provide solutions to a lot of major problems in the world as they are low-cost, limited energy services, and there must be mechanisms to raise the efficiency of energy consumption to ensure a long lifetime...
Internet of Things (IoT) is a new network paradigm that allows the virtual presence of physical objects in our life. The main idea of IoT is origin from equipping daily life objects with embedded devices. Meanwhile, due to the low cost and high availability of sensor devices, wireless sensor networks (WSNs) have a great role in overspreading of IoT. This paper presents a new routing algorithm in order...
With the advancement in sensing technology, applications are moving from wired to wireless region. The main challenge is the energy consumption of individual sensing nodes. When first node dies system becomes unstable and we cannot make use of the untapped node's energy. There comes the relevance of TSEP like protocols in such heterogeneous network. Heterogeneous in the sense with respect to node...
A Multipath Component Distance (MCD) based Automatic Clustering Identification algorithm (ACId-MCD) is introduced to group multipath components (MPCs) obtained from radio channels. Its performance is compared with the K-means MCD algorithm using cluster data simulated with four reference scenarios of the WINNER II channel model. The results indicate that K-means MCD is outperformed for all investigated...
Using Cluster-based routing algorithm to prolong wireless sensor network's lifetime is an important research topics. In this paper we proposed a novel clustering algorithm named PLEACH, which selects cluster head more evenly. First, it calculates the optimal cluster numbers according to a new strategy. Then it uses improved PSO algorithm to choose the most suitable cluster head in the next round selecting...
Prolonging the network lifetime, scalability and balancing are very important requirements when implementing a wireless sensor network (WSN). Clustering is a technique that has been widely applied for achieving these goals. However, there exists the energy hole problem which causes an unbalanced energy consumption in equally formed clusters. More specifically, nodes near the base station (BS) die...
The limited sensor node energy and the large number of nodes with dynamic network topology information have always been the important design concerns in Wireless Sensor Networks (WSN). Node clustering is an effective way to tackle with the two issues by grouping the nodes into hierarchies in order to reduce communication distance and the amount of message. This paper mainly focuses on the unification...
Energy consumption is an important issue in the design of Wireless Sensor Networks (WSNs) which typically are powered by limited energy. A suitable clustering algorithm for grouping sensor nodes can raise energy efficiency for WSNs. However, there exist some overheads for clustering, such as cluster-head selection, assignment, and cluster construction. In this paper, we propose a new regional energy...
Wireless sensor networks are composed of a large number of sensor nodes with limited energy resources. One critical issue in wireless sensor networks is how to gather sensed information in an energy efficient way since the energy is limited. The clustering algorithm is a technique used to reduce energy consumption. It can improve the scalability and lifetime of wireless sensor network. In this paper...
Generally a wireless sensor network is realized using many-to-one concept of having many sensors transferring the data to a common single sink. The proposed work demonstrates the importance of multiple sink in a wireless sensor network. The proposed routing protocol routes the data efficiently from multiple sources (sensing nodes) to multiple sinks. A comparison between single sink and multiple sink...
Nowadays, Wireless Sensor Networks (WSN's) has become progressively more attractive and has found its way into a wide variety of applications and systems because of its low-cost, self-organizing behavior and sensing ability in harsh environments. A WSN is a set of nodes arranged into a network. Routing is a vital technology in WSNs. It can be split into two groups namely flat routing and hierarchical...
Using wireless sensor networks in residential building electrical monitoring changes the style of wire-based measurement and facilitates the design of the system. The wireless communication mode takes new problems such as the transmission efficiency and energy consumption of data transmission. To solve these problems, this paper discusses the characteristics of the network topology for energy measurement,...
In Wireless Sensor Network, the total energy consumption determines the lifetime of the entire network. As a result, a number of recently-designed energy-efficient routing algorithm stated that clustering approach has an important issue for organizing a network into a connected hierarchy and increasing the network lifetime. The clustering hierarchical model consists in two main steps, cluster heads...
In this paper, we propose a clustering algorithm to enhance the performance of fixed wireless sensor and actuators networks (WSANs). In each cluster, a multi-level hierarchical structure can be applied to reduce the energy consumption. In addition to the cluster head, some nodes can be selected as intermediate nodes, each of which manages a subcluster, according to their positions. Intermediate nodes...
Economic usage of energy is a critical issue in wireless sensor network. Network clustering is an efficient technique for minimizing node energy consumption and maximizing network lifetime. One of the major issues of a clustering protocol is selecting an optimal group of sensor nodes as the cluster heads to divide the network. But optimum clustering is an NP-Hard problem and solving it involves searches...
In recent years, with the developments of wireless sensor networks technology, how to prolong the lifetime of WSN and reduce energy consumption by the sensor nodes becomes a hot topic. This article analyzes the mechanism of clustering in LEACH protocol and presents improved approaches based on energy of sensor node and the distance between the node and the base satation, then compares their performances...
With the development of the Wireless Sensor Network (WSN), the number of sensor nodes in WSN is so large while one single node's resource is quite limited. One of the key goals of designing routing protocol of WSN is to reduce the energy consumption and maximize the networks' overall survival time. ICCA presents one cluster heads choosing algorithm based on the Low-Energy Adaptive Clustering Hierarchy...
Node in WSN has its own local clock, and it's difficult to achieve long-term time synchronization between nodes due to some internal and external factors. Within the factors, some internal attackers (group members) report false clock references to their neighbor nodes. Considering the special circumstance that some nodes of the wireless sensor network are faulty, an improved HRTS algorithm named T-HRTS...
Data sensed and transferred between sensor nodes should be secure and preserve battery life. Some algorithms, such as LEACH (Low Energy Adaptive Clustering Hierarchy), have been proposed to efficiently organize sensor nodes into clusters, where a cluster-head, is elected to represent that cluster. To save energy, the cluster-head coordinates the cluster and forwards data generated within the cluster...
An important aspect of applications with sensor networks is their network lifetimes. Prolonging the network's lifetime by improving the efficiency of routing algorithm has always been investigated. As for the same purpose, this paper focuses on the design of a remote life alerting system and presents an improved routing algorithm used in this system. For elder people living alone or some other people...
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