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Load balancing and energy conservation techniques are one of the important constraints in the design of in wireless sensor network (WSN). Usually, clustering technique helps the network in the minimum utilization of energy that results in enhancing network lifetime. Moreover, various nodes in the multihop network that are near to the base station drain their battery very quickly thus result in creating...
Aimed at the inapplicability of LEACH protocol for large-scale sensor network and uneven energy consumption, a Distributed Self-organizing Clustering Routing protocol (DSCR) for large-scale sensor network is proposed. Based on clustering, the network routing is divided into two levels: parent cluster and cluster. The cluster structure is formed by the back-off mechanism related to the residual energy...
The combination of Device-to-Device (D2D) Communication in 5G Cellular Networks and vehicular networks will not only increase the performance of vehicular networks, but also increase the revenues for network operators and services providers. This paper proposes a 5G D2D routing method oriented to vehicular networks, which can increase the connectivity and scalability of vehicular networks while alleviating...
These days wireless sensor networks are being used in many different fields. Limited energy and efficient usage of energy are the most important factors that should be considered in these networks. Node clustering increases the efficacy of the energy consumption. Each cluster has a cluster head(CH) that is a member of that cluster and its duty is sending and receiving data in the network. So finding...
Wireless Sensor Networks (WSNs) consist of a set of low power sensor nodes along with gateways and base station for specific task. These low power sensor nodes consume energy for data routing to destination i.e., sink. Sensor node dies once it all energy is exhausted. This creates an unstable network. Hence, it is a key challenging task to increase the stability period of the network i.e., the time...
We consider a cooperative vehicle routing problem for surveillance and reconnaissance missions using an aerial and a ground vehicle, where the collected data needs to be processed in real-time or near real-time. The proposed framework assumes that the ground vehicle has the ability to communicate long range and the aerial vehicle has limited communication range. The vehicles' paths are constrained...
Wireless Sensor Networks (WSN) have gained worldwide attention in recent years, particularly with which has facilitated the development of smart sensors. WSN consists of small nodes with sensing, computation and wireless communication capabilities. In WSN, clustering is used as an effective technique to achieve scalability, self-organization, power saving, channel access, routing etc. Lifetime of...
Link quality protocols employ link quality estimators to collect statistics on the wireless link either independently or cooperatively among the sensor nodes. Furthermore, link quality routing protocols for wireless sensor networks may modify an estimator to meet their needs. Link quality estimators are vulnerable against malicious attacks that can exploit them. A malicious node may share false information...
In this paper, we consider a wireless sensor network that consists of a group of sensor nodes estimating multiple independent LTI systems. Each point-to-point link between the sensor nodes is a slow frequency-flat fading channel and the states of the channel are described by a finite-state Markov channel (FSMC) model. We propose a transmission schedule of the sensors such that the overall estimation...
In Wireless Sensor Networks (WSNs), the efficient use of sensor energy is a crucial point to extend the network lifetime and has been the focus of many industrial and academic researchers, since it is not a trivial task. Several methodologies for clustering, routing and energy saving in WSNs are available in the literature. However, the lack of detailed and crucial information from the analyzed studies...
This paper contributes to recent improvements in energy-efficient clustering algorithms for static and homogeneous wireless sensor networks. We propose a modified algorithm, called NREC, which considers information on the locally normalized residual energy of sensor nodes. This information is weighted with the probabilistic threshold used in standard algorithms for periodic election of cluster heads...
At present, the existing trust protocols and models in the trust mechanism of the wireless sensor network have several problems such as one-sided reputation assessment, avoidless malicious evaluation from the nodes, and overfull subjective factors in the evaluation process. In order to solve these problems, a Reputation Model based on Similarity Measure of Trust Value in wireless sensor networks(RMSMTV)...
Aiming at the problem that the node energy is limited, the network cycle is short and the throughput is low in the wireless sensor network, Dynamic Routing Protocol Based on Clustering was proposed known as KACO (K-means and Ant Colony Optimal). At the beginning it employs ant colony optimal and k-means algorithm to form cluster, and the novel method which consider the energy ratio, node location...
As a class of narrow band structures such as dock, bridge and dam, chain-type networks are applied to monitor and track underwater targets. This paper proposes a coverage strategy for probabilistic positioning of mobile targets, which can balance the coverage and positioning performance of underwater sensor network. Based on careful analysis characteristic of network architectures, multiple relay...
In this paper, for Heterogeneous networks (HetNet), we propose a resource allocation with optimization problems based on dual connectivity and traffic load on backhaul links. In the proposed method, two optimization problems are constructed; one is for determining the allocation of a base station and frequency slots to each user, and the other is for determining routes for traffic in backhaul. We...
Efficient power use is the fundamental to think about tried and true operation of wireless or remote sensor frameworks. This applies correspondingly to direct or linear sensor masterminds as they create when sensors are sent along linear frameworks such as pipelines. In this work, a innovative approach to manage imperativeness capable controlling to a dual base station or control center in a straight...
In future mobile networks, e.g., 5G, emerging IoT services are expected to support billions of IoT devices with unique characteristics and traffic patterns. In this paper we propose an SDN-based IoT Mobile Edge Cloud Architecture (SIMECA1) which can deploy diverse IoT services at the mobile edge by leveraging distributed, lightweight control and data planes optimized for IoT communications. We prototyped...
Caching of popular content on wireless nodes is recently proposed as a means to reduce congestion in the backbone of cellular networks and to improve Quality of Service. From a network point of view, the goal is to offload as many users as possible from the backbone network to the wireless caches while at the same time offering good service to cache-unrelated users. Aggressive offloading can lead...
Collecting data from a large wireless sensor network (WSN) is a challenging issue and there are mainly two approaches to increase the efficiency: by hierarchical routing based on node clustering and by mobile elements (MEs). Since either method has pros and cons, this paper presents a hybrid approach, called Node Density based Clustering and Multiple Mobile Collection (NDCMMC), to combine the hierarchical...
Since sensor nodes are energy constrained as they have limited power resources, they turn off their energy earlier. So, it will be so hard and so expensive to change or recharge their batteries from one time to another especially for a large scale networks. Therefore, prolonging their lifetime is a key issue that should be highly considered. As a solution for this problem is to manage intelligently...
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