The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In recent technological advancement such as smart grid applications, security surveillance & border protection, internet of things, disaster management & other smart home applications exhilarate the deployment of autonomous, self-configured, large-scale wireless sensor networks. Efficient power conservation is crucial concerns for sensor networks to operate in the hostile environment. Therefore...
Existing wireless sensor network are developing rapidly and soon will occupy a dominant place among the data collection and communication. The remote location of the sensors and automatic operation increases their vulnerability to outside intrusions and attacks. Because of out of constant sensor supply the providing of authentication is quite challenging whereas the best protocols is negotiated sensor...
This paper explores Adaptive Fibonacci-based Tuning Protocol for Service and Resource discovery in the Internet of Things (AFT). Through using constrained application protocol (CoAP), Internet of Things (IoT) can support Machines to Machines (M2M) communications. CoAP has centralized and distributed operation modes to discover resources. In the centralized mode, resource directory (RD) is used to...
Wireless powered communication network (WPCN) is a novel networking paradigm that uses radio frequency (RF) wireless energy transfer (WET) technology to power the information transmissions of wireless devices (WDs). When energy and information are transferred in the same frequency band, a major design issue is transmission scheduling to avoid interference and achieve high communication performance...
The coming generations are using the wireless sensors, and all of these networks have been deployed across various areas. Also they are used with the real time systems thus catering to the needs of the present scenario which the traditional methods have failed. These wireless networks deploy sensors around the area, but the disadvantage lies that these sensors have very limited battery life, so to...
In energy-constrain wireless sensor networks, maintaining k — coverage degree requested by an application while maximizing the network lifetime is a major challenge. Existing literature on k — coverage does not consider residual energy levels and actual battery discharge rate of ACTIVE nodes. OBSP (Optimized Backoff Sleep Protocol) considers the residual energy level information and battery discharge...
Coverage and connectivity are the two important factors so far the energy efficient performance in wireless sensor networks is concerned. Although, wireless sensor network is one of the upcoming technologies in the field of wireless communication, we find very less development of real time applications using the sensor networks. The main reason for this is the design of the motes to be deployed in...
This paper reviews the proposal for a design of a wearable that describes the basis of a glove intended to help visually impaired people in their day-a-day activities. It uses wearable technology, such as sensors and actuators, that alert the user in case of an encounter with an obstacle in two directions (according to the position of the hand), and the proximity to a desired destination. In the first...
This study introduces a distributed virtual laboratory for a multiagent programming course which has been very satisfactorily adopted by students, with a success rate of nearly 80%. It also aims at capturing the daily activity of students, providing the basis for data-driven assessment. Finally, it also allows for using process mining technologies to unveil successful and failed behaviors of students...
WSN is a network in which sensors are distributed randomly in space to keep track of any environmental or physical conditions. The uses of WSN is innumerable. Energy conservation and enhancing network lifetime are always been a challenging task. In this paper, to conserve energy and to maximize lifetime, FLC_1 and FLC_2 are used which dynamically regulates transmission power and sleep time. An IEEE...
in this paper, we have urbanized a fresh sink placement policy in Wireless Sensor Networks (WSNs). We studied the problems in previous sink placement strategies such as RSP, CNP, GOSP, SOSP, CLHM, ISP, and GSP. These previous sink placement strategies are not concerned about dynamicity of the network under consideration. The information about sensor nodes positions is not known beforehand in concerned...
ECHONET Lite which is an open standard network protocol is developed to solve the issues, such as "earth environmental issue" and "elderly society issue" by connecting newly networked appliances and sensors. ECHONET Lite is suitable for current environment and state of the art communication technology. One of the features of ECHONET Lite is that it is possible to build the smart...
A synchronized network time is always necessary for scheduling to achieve energy efficiency, data fusion, localization for WSN applications. The major limitation in a WSN is the battery usage and lifetime of the nodes. Due to the power restriction of nodes, efficient routing is very important to save the battery of sensors to enhance the lifetime of the sensor area. The multi-head chain concept is...
WSNs are complex systems that are mainly limited by the battery life of the nodes in order to have an adequate performance. In most cases, it is possible to have a re-deployment of new nodes in order to prolong the system’s lifetime. This leads to a situation where some nodes have a low energy level while other nodes have high energy levels. This scenario can also be found due to the use of a preferred...
With the recent development of wireless and sensing technology, wireless sensor devices have invaded the medical area with a wide range of capability. These devices allow medical practitioners to monitor the patients remotely and timely. However, it is known that the body movement can result in significant fluctuations of the radio signal, affecting the data communication. Real-time activity recognition...
In energy-limited wireless sensor networks, the sensor scheduling is an appropriate technique for minimizing node energy consumption and maximizing network coverage lifetime. The challenge is to determine an appropriate scheduling mechanism for the nodes in order to maintain sufficient count of active nodes for maximum network coverage. Existing works on coverage optimization based scheduling mechanism,...
The new generation of smart devices, equipped with a large variety of sensors, enhances the Participatory Sensing of data. However, many issues arise when selecting participants to perform the sensing tasks. These issues are necessarily related to the limited energetic resources of devices, the impact of users mobility as well as the quality of collected data, recently defined as “Quality of Information”...
Near-field radio frequency identification (RFID) tags have a number of unique features such as being wirelessly powered, having ultra low power communication capabilities, small size, and low cost. These qualities paired with the increasing availability of commodity near field communication (NFC) enabled smart phones presents a significant opportunity to enable a wide range of new applications and...
A wireless network consists of geographically distributed sovereign devices and uses sensors for cooperative monitoring physical conditions. It comprises number of small, and relatively inexpensive and low-power sensors that are connected to the wireless network, constituting a wireless sensor networks (WSNs). They had a wide range of applications e.g. In physiological monitoring, environmental applications,...
In this paper we propose a low cost and computationally inexpensive adaptive transmission power control algorithm for wireless sensors to communicate with the base station or hub. This power control algorithm can be used in scenarios where the transmitting station is not static and the distance between the transmitter and the receiving station changes with time. In addition to that there can be unwanted...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.