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.
Spectrum sensing is one of the most mandatory mechanisms of Cognitive Radio (CR) to find the unused Spectrum. Spectrum sensing has renewed on a very active scrutiny area over recent years. As it is one of the most important tasks performed using cognitive radio and the implementation of the other functions of the cognitive radio is based on the spectrum sensing. So it is mandatory for cognitive radio...
Wireless Sensor networks (WSN) is basically comprised of sensors that are spatially distributed with self-ruling capability, which monitors physical or environmental conditions such as, pressure, temperature, motion, sound and so on. Sensors also passes all the related information throughout the network. As the number of nodes and size of the network increases, there will be rapid increase in internet...
Wireless Body Area Networks (WBANs) consists of biosensors which are used for health monitoring and diagnostic purposes. Moreover, the biosensors are constrained to the issue such as link quality, delay and multihop energy consumption. In order to overcome these issue an Optimized Fuzzy based Swarm Routing (OFSR) is proposed for WBAN. In this technique, first selection of best node is done based on...
In this paper QoS based route management technique is proposed for Cognitive radio networks. Proposed model makes use of functionalities of profile exchange mechanism and location services. The QoS routing algorithm contains following elements: (a) each licensed user (PU) exchanges properties of the channels it owns with a Central Entity, whereas all the unlicensed users (SU) in the network due to...
Conventional manufacturing systems like assembly lines cannot handle the constantly changing requirements of a modern-day manufacturer, which are driven by volatile market demands. In a bid to satisfy such requirements, modern manufacturing systems, comprising innumerable cyber-physical systems (CPS), aim to be reconfigurable. CPS implement production processes through an ICT infrastructure networked...
Routing in Wireless Sensor Networks (WSNs) is an emerging research area. This paper presents a survey of routing techniques in WSNs which support node mobility. In recent years, advancement in WSNs lead to the development of many routing protocols specifically designed for WSNs. The routing protocols discussed in this paper in general can be four main category such as Network structure, Communication...
In this paper, we present a novel QoS (quality of service) multicast routing protocol (QMRP) for partially mobile wireless TDMA (time division multiple access) networks. This protocol has been inspired by the typical requirements of industrial networked control systems, i.e., systems exhibiting real-time behavior and therefore requiring predictable communication bandwidths and transfer delays. QMRP...
Several localization techniques have been proposed to identify the exact location of sensor nodes. Localization is important for computation of many applications such as routing in wireless sensor network. Energy preservation is a challenge in wireless sensor network and many algorithms have already been proposed. The localized node lifetime is maximized by using energy-efficient routing, use of minimum...
Multidimensional WSNs are deployed in complex environments to sense and collect data relating to multiple attributes (multidimensional data). Such networks present unique challenges to data dissemination, data storage and in-network query processing (information discovery). In this paper, we investigate efficient strategies for information discovery in large-scale multidimensional WSNs and propose...
In Body Area Networks (BANs), quality of service is needed to provide reliable data communication over prioritized data streams coming from energy constrained sensors attached to, or possibly implanted in, patients. In this work, we focus on BAN for real-time data streaming applications, where the real-time nature of data streams is of critical importance for providing a useful and efficient sensorial...
In this paper we present a new cross-layer method for the routing problem in Wireless Mesh Networks taking into account the Quality of Service (QoS) with rate adaptation. Since different routing metrics play certain importance in the multihop routing, multiple objectives such as transmission delay, traffic load and bandwidth are incorporated to the routing metric. Meanwhile a new link-layer sensing...
QoS is a key factor to the utility of Wireless Sensor Network (WSN) especially in the case of multiple sources data detecting with different time property. For environment detecting, there are not only same sensors just for one element but also heterogeneous sensors for multiple elements. Sometimes a single sensor has multiple functions to get several elements, which could be indicated to send the...
Cooperative relay enables general multi-hop cognitive radio networks (CRN) over cognitive radios (CR) and nodes of primary system (PS). However, successful CR networking such as routing relies on the knowledge of radio resource availability associated with location, which is a challenge of traditional spectrum sensing. We introduce the concept of spectrum map encompassing spectrum and location information...
Wireless Sensor Networks (WSNs) have inherent and unique characteristics rather than traditional networks. They have many different constraints, such as computational power, storage capacity, energy supply and etc. Energy aware routing protocol is very important in WSN, but routing protocol which only considers energy has not efficient performance. Therefore considering other parameters beside energy...
Admission control plays an important role in providing Quality of Service (QoS) guarantees for wireless mesh networks (WMNs). Multipath routing can improve network performance in reliability and load balancing. However, when the multipath routing are adopted in 802.11-based WMNs, the transmission with bandwidth assurance is facing rigorous challenges. In this paper, a novel joint design of multipath...
We introduce a sensor network to measure the individual power consumption of a large number of network elements in near-real time. A main application of this system is to obtain profiles of the power usage of network elements, i.e., a parameterization of power consumption with respect to workload. We discuss the design and implementation of both hardware and software aspects of the system as well...
Recent technological advances in miniaturization and wireless communication have made Wireless Sensor Networks an active research field. The increasing number of multimedia and real-time applications for Wireless Sensor Networks has led to a growing interest in Quality of Service for this category of networks. In this paper, we propose a QoS-geographic and energy aware routing protocol for Wireless...
In wireless sensor networks, a large amount of existing routing protocols consider energy efficiency as the main objective and assume data traffic with unconstrained delivery requirements. However, the introduction of image and video sensors demands certain quality of service (QoS) from the routing protocols and underlying networks. Finding routing paths that satisfy different metrics of the QoS requirement...
An established Intelligent Power Management (IPM) strategy for a Wireless Sensor Network (WSN) is based on the principal that redundant nodes can be hibernated to conserve their energy. Due to the hibernation, sensed data from the node will be unavailable, which essentially means that the WSN will be blind in the vicinity of the hibernating node. Numerous strategies have been proposed to maintain...
In the recent years Cognitive Radio (CR) technology imposed itself like a very good solution to the increasing spectrum utilization. This technology proposes the development of a new radio type - a cognitive radio - endowed with intelligence that shall sense, share, and use the spectrum opportunities (SOP) of the preexisting wireless networks, that is the channels that are not used by the licensed...
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.