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We study the throughput and delay characteristics of wireless caching networks, where users are mainly interested in retrieving content stored in the network, rather than in maintaining source–destination communication. Nodes are assumed to be uniformly distributed in the network area. Each node has a limited-capacity content store, which it uses to cache contents. We propose an achievable caching...
In-situ monitoring of oil reservoirs is crucial for determining the sweet spot of oil and natural gas reserves. Wireless sensor nodes are a promising technology to collect data from oil reservoirs in real time, such nodes are not sufficient for transmitting the required data within a power budget because of limitations caused by the very small size of sensors and the environment. To overcome limitations...
Clustering algorithm incurs significantenergy consumption for clusters and its ClusterHeads (CH) in Wireless Sensor Network(WSN). WSN brings a new attention over a real-timeintelligent system with its limitations and gainedmore research challenges. In last few years, WSNcan be used and seen in many real time applicationslike disaster management, pollution monitoring, temperature monitoring, traffic...
With the development of the latest technologies and changes in market demand, the wireless multi-sensor system is widely used. These multi-sensors are integrated in a way that produces an overwhelming amount of data, termed as big data. The multi-sensor system creates several challenges, which include getting actual information from big data with high accuracy, increasing processing efficiency, reducing...
Wireless ad-hoc network is a resource constrained network applied in many applications. Clustering is considered to be most competent technique in order to attain firm performance and improved utilization of energy. Traditional clustering tactics elect a cluster coordinator commonly known as cluster heads so as to manage the whole cluster in terms of data collection, data fusion and transmission of...
Wireless sensor network will become isolated in various associated segments because of the disappointment of some of its hubs, which is known as a “cut”. In this paper, authors acknowledge the issue of distinguishing cuts by the remaining hubs of a wireless sensor network. System proposes an estimation which grants every hub to identify at the time of accessibility to an extremely assigned hub has...
A Wireless Sensor Network (WSN) is prone to network connectivity failure. Since the nodes suffer from the power constraint and they are mostly deployed remotely, the network suffers from any time connectivity failure problem. Therefore, it is important to find the geographic location of the network discontinuity. The disconnected region is usually known as network cut. It is very important to know...
Trust is a soft security solution for Ad-hoc Wireless Networks such as Mobile Adhoc Networks (MANETs), Wireless Sensor networks (WSNs). Due to openness of the networks a malicious node can easily join and disrupt the network. Trust models are used to discriminate between legitimate and malicious nodes in the network. The characteristics of MANETs and WSNs are different so, there are some significant...
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...
Wireless Sensor Networks (WSNs) are gaining much importance due to their varied characteristics and the ease with which they can be implemented in various environments to suit different purposes. The sensor nodes which are the main components of WSNs are typically battery equipped and difficult to recharge. Hence, the primary concern while designing such networks is to reduce the overall power consumption...
In recent years, Because of rapid advancement of semiconductor fabrication technology, electronic devices have been becoming smaller, cheaper, and requiring less power for its operation every year. One of the fields, which have benefited by the technological advancement, is the field of WSNs. Recently, a lot of researched related WSNs have been conducted and people have been realizing its unlimited...
In Wireless Sensor Network, the communication generally takes higher energy than other operations like sensing and data processing. So the traffic reduction in communication is one of the most important concern for prolong the life of sensors. This paper presents three traffic reduction techniques based on dominating set. In the first approach base station is dynamically relocate to the sensing area...
This paper studies coverage probabilities of randomly deployed radio nodes in single-destination networks. Such networks are typically operated for data aggregation in machine-to-machine (M2M) communication scenarios. In large-scale deployments, diverse environments usually result in heterogeneous propagation channels. We address the question to which extent an increased medium access can compensate...
Key management for wireless sensor networks has been a challenging research topic since stringent resource constraints make the key pre-distribution schemes difficult to implement. This paper proposes a novel key pre-distribution method based on trivariate symmetry polynomial and hash function. First, the base station assigns some random numbers to each node using BIBD, then two nodes calculate the...
In an ad-hoc network, packet flow management is a major challenge due to rapid change of network structure. In heterogeneous queue monitoring scenario, some protocol dispatch packets according to their priority. As a result of these queue monitoring policies, packets that have lower priority leads to starvation even if they have travelled a long hop distance, hence the packet is dropped. Considering...
The paper analyses the outage probability of a radio node in a finite size large-scale data aggregation network which employs slotted random medium access. In most literature, this performance metric is usually derived from a Poisson point process distribution of radio nodes in infinite space. In contrast, we analyse a network with finite area and a fixed number of interfering nodes using a binomial...
A wireless sensor network consists of geologically distributed autonomous sensors to monitor and control over physical or environmental conditions, like temperature, sound, pressure etc. And this information is passed through sensors in the network to a next location. Military applications was required the development of security in wireless sensor networks. Today such networks are used in many areas...
Wireless sensor network is a collection of large number of sensor nodes that are deployed in large number to monitor the environment. There is a great technological advancement in wireless sensor network during last few years. Due to low-cost, small-size, nature of Wireless Sensor Networks (WSNs), it allows them to sense the information in various hostile environments (e.g. Military surveillance,...
Wireless body area networks (WBAN) consist of wireless smart sensor nodes placed on, in or around the human body for medical monitoring systems, entertainment and ubiquitous computing. The nodes in WBAN are usually battery-powered and they send sensed data from a human body, including heart rate, temperature and ECG, etc. to the medical centre to monitor the health situation of individuals. One of...
Investigating coastal oceanic environment is of great interest in pollution monitoring, tactical surveillance applications, exploration of natural undersea resources and predicting wave tides. Deployment of underwater sensor networks for real time investigation is the major challenge. Acoustic communication intends to be an open solution for continuous wireless sensor network in underwater scenarios...
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