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In large-scale industrial wireless sensor networks (IWSNs), some nodes are likely to be critical to maintain group-connectivity. Prior studies on topology control with critical nodes (CNs) mainly focus on network connectivity inside a group. It is non-trivial to maintain group-connectivity without considering any CNs in group-based IWSNs. Sleep scheduling is one of the approaches to save residual...
Billions of objects connect to the internet by using Internet of Things (IoT). Current trends of IoT are developing protocols, platforms make objects accessible across domains. The purpose of these studies is to combine all IoT devices on main host systems. However, the host systems have a problem about the mismatch between devices and the host. To solve this problem we have designed the Information...
Machine-to-Machine (M2M) communications are a key enabler of Internet of Things (IoT) applications. Smartphones are a natural choice to serve as gateways (GWs) in mobile M2M communications due to their enhanced connectivity, powered by the ubiquity of mobile networks, and sensing capabilities. However, the use of smartphones as M2M GWs can have an impact on the smartphone usability and introduce undesirable...
Code dissemination is an important and challenging task in wireless sensor networks (WSNs). Although there are a lot of dissemination protocols, the situation where small subset of nodes requires the code, such as a WSN shared among multiple users, is not considered. Some prior works have proposed dissemination protocols using high power sensors or clustering to enable efficient dissemination for...
An ever-increasing number of today's mobile applications take advantage of location-based services (LBS) in order to proactively notify mobile users about location-dependent content or to execute location-dependent actions once the user enters or leaves a dedicated zone. The proactive LBS are thereby responsible to track the user's position energy-efficiently in the background and to continuously...
Wireless sensor networks are very suitable for remote sensing and monitoring tasks. Sensor nodes being battery operated devices and other limited resources present many challenges for protocols in WSNs. Researches are being continuously conducted with the purpose of combating these issues. Clustering in WSNs aim to distribute the energy load of the nodes by assigning some aggregator nodes or cluster...
Wireless sensor networks are designed to collect information related to some events in hostile environments where human presence is not often possible. That is why we consider that once they are deployed, the sensors are autonomous. Their lifetime tightly rely on the manner of their batteries are utilized during network operations. Then, the most critical feature in sensor networks is the hardship...
As of the technological growth, Wireless Sensor Networks (WSNs) becomes an emerging research area. Sensors are combined as group called clusters to collect the data from where it is deployed. Clusters are maintained by Cluster Head (CH) and it maintains the transmission process which needs high energy. LEACH Protocol is considered for this work and in which the CHs are elected based on threshold function...
This paper considers a cooperative spectrum sensing scheme for cognitive radio network that uses a power splitting mode for simultaneous sensing and harvesting of energy. The objective is to maximize the residual harvested energy over the total energy consumption in the sensing process. An optimization problem is formulated in terms of the number of secondary user (sensing) nodes, the number of samples...
Wireless sensor network (WSN), a network of minute interconnected sensing element nodes communicating within themselves utilizing radio frequency signals and utilized in immensely enormous quantities to examine and realize the physical world. The communicating sensing element nodes are power-driven by batteries, which have a circumscribed lifetime. Hence managing the energy is a primary requisite...
Wearable monitoring devices for ubiquitous health care are becoming a reality that has to deal with limited battery autonomy. Several researchers focus their efforts in reducing the energy consumption of these motes: from efficient micro-architectures, to on-node data processing techniques. In this paper we focus in the optimization of the energy consumption of monitoring devices for the prediction...
In wireless sensor networks, sensors typically aim to transmit their own readings to the sink node. Constructing an efficient data collection tree is very important since it can determine the lifetime of the given WSNs. In literature, may studies have investigated this issue and proposed algorithms for mobile sink to visit each sensor such that the readings of the sensors can be directly transmit...
Recent advances in technologies have allowed the design of small-size low-power and low-cost devices that can be connected to the Internet, enabling the emerging paradigm of Internet-of-things (IoT). IoT covers an ever-increasing range of applications, e.g., health-care monitoring, smart homes and buildings, etc. In this invited paper, we discuss and summarize the IoT paradigm with a special focus...
With the ongoing system miniaturization, sensors capabilities and cost reduction, a new opportunities are created to accomplish data reduction and sensors fusion on small systems. This is the case for Unmanned Aerial Vehicles and the interest that they generate in applying this technology in remote sensing and data gathering in a wide wireless network. In another hand, it is clear that the use of...
This poster presents a hardware/software solution, called On-The-Go Switch (OTGS), enabling a smartphone to control the connection state of a USB-attached device. Through an example, we show how OTGS can reduce the energy consumption of portable spectrum sensing platform utilizing low-cost Software Defined Radio. We show that OTGS can reduce the energy consumption by 47%, compared to a baseline, which...
Mobile phones are equipped with a rich set of sensors which are useful in deploying various sensing activities. We focus on participatory sensing in which every participant carrying smartphone senses its environment and shares it with server. Most of the applications require location information to perform sensing activity. But, GPS drains considerable amount of energy if used for localization. So,...
Intra wireless body sensor network (Intra-WBSN) is typically a short range wireless health monitoring network, consists of wearable or implant bio-sensor nodes which collects the patient's physiological signals and forward to patient monitoring systems. Network lifetime maximization and energy efficiency of the network have significant attention for current research. Recently cost-function based multi-hop...
Internet of things (IoT) integrate the technologies such as sensing, communication, networking and cloud computing in wide range monitoring zone. For applications of IoT, the most appropriate monitoring network is wireless sensor networks (WSN). It is most important to develop energy efficient cluster head (CH) selection scheme to increase the network lifetime of WSNs. It is most crucial to save the...
When the use of wireless sensors network is becoming increasingly wider and deeper, its problems are also beginning to highlight. Due to the limit of wireless sensors' energy supply and the unstable channel, ensuring the reliability and speed of the transmission has become the research hot spot. With multipath or retransmission transmission mechanism, the redundancy of data transmission can be ensured...
Energy consumption and lifetime of WSN are the most important research challenges to be resolved. For load balancing and efficient data collection in the network, clustering is used. Sensors in each cluster send the data to their corresponding cluster heads. The cluster head performs data aggregation and transmission of the aggregated data to the base station. Farther sensor nodes data are aggregated...
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