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.
Transmission timing and delay between communicating vehicles are two important performance measures for safety-critical applications of Vehicular Ad-Hoc Networks (VANETS). Safety-Critical VANETS are composed of multiple nodes each requiring access to a shared communication medium. This access is controlled by the Medium Access Control (MAC) protocol. Numerous MAC protocols have been proposed for VANETS,...
DC (Direct Current) microgrid has gained more attention caused by the development of distributed generations and DC loads. The control objectives for DC microgrid are voltage regulation and current sharing. In order to achieve these objectives, consensus based control methods with communication have been extensively studied recently. It is a common strategy to modify the voltage set point of local...
The rapid growth in market demands for high-quality, state-of-the-art, and reliable communication services increases the amount of session-control signaling, which is mainly based on the Session Initiation Protocol (SIP). Many research activities dealing with the Quality of Service (QoS) have been focused on media-related service components, whereas signaling-related service components have received...
This paper explains how Fusion networking technology can be used as a communication mechanism between utility substations for transporting time critical traffic in wide area power system protection applications to attain deterministic low delay, zero packet loss and ultra-low packet delay variation. The requirements for inter substation communications are presented with focus on the IEC 61850 protocols...
The trend of producing energy from Renewable Generation (ReGen) plants is greatly increasing. This leads to the objective of building future power generation system entirely based on renewable sources. Since the power output of ReGen plants, such as wind power plants (WPP), varies continuously and thereby the voltages in the distribution grid, an effective control system is required, to govern the...
We analyze the conditions in which offloading computation reduces completion time. We extend the existing literature by deriving an inequality that relates computation offloading system parameters to the bits per instruction ratio of a computational job. This ratio is the inverse of the arithmetic intensity. We then discuss how this inequality can be used to determine the computations that can benefit...
This paper presents a comparison of Delay Tolerant Network (DTN) routing protocols in a realistic environment. This scenario is created by considering local map for vehicular network. The concept of this research conforms to actual conditions related to the lack of infrastructure or conditions that lead to malfunction of some infrastructure in the network. This simulation is focusses on the use of...
The mobile Ad-hoc network is an open wireless environment in which nodes are free to move anywhere without any topology and fixed infrastructure. Due to its open nature, it is vulnerable to various security attacks. There is a different kind of Denial of Service (DoS) attack such as Gray Hole attack drops fully or partially packets passing through them. Gray hole node able to change its behavior malicious...
Network delays and data-dropouts could have a significant impact on Cyber-Physical System (CPS). In this paper power grid with large-scale deployment of distributed and networked Phasor Measurement Units (PMUs) and wind energy resources is considered as an example of CPS. Modeling and simulation studies are done in a power system with 151 dynamic states for stabilizing electromechanical oscillations...
The next generation of the Internet is a multi-service network with data, voice, video and multimedia, which puts forward the higher requirements of real-time performance and effectiveness for the end-to-end communication network. However, higher requirements of time delay will lead to higher energy consumption. Since different communication services have different requirements of time delay, an end-to-end...
Acceleration of energy-intensive lifestyle leads to a fast-pace development for electric power systems. Microgrids and smart grids are being utilized as tools to improve reliability for electrical systems and effective systems to support higher penetration of renewable energy resources. Uncertainty of communication delays creates a significant challenge to develop models for a system with several...
Communication in intelligent computer networks is an indispensible attribute of the dataflow quality in Web traffic. We propose a model that investigates intelligent computer networks stability while specifying its limits. Packet queuing delay affects the performance of the network, and especially its stability. If the network is presented as a dynamic system in block diagram form, we compute a transfer...
Underwater networks that are designed to carry high-priority data at a relatively high traffic load should employ network protocols that emphasize low delay and adequate reliability at the expense of energy. ICRP (Information-Carrying based Routing Protocol), originally proposed by Wei Liang et al. [1] in 2007, is a routing protocol that obtain unicast routing paths by sending data payload as broadcast...
The SEATONOMY methodology is a systematic approach to make efficient the design, development and verification and validation of autonomous systems. The relationship between levels of autonomy (LOA) and availability of communication is an important factor for underwater drones. Underwater autonomous operations experience both a reduction in available communication capacity and increased propagation...
Cognitive radio is a promising solution in improving spectrum utilization efficiency by allowing unlicensed users to access idle licensed spectrum opportunistically. Cognitive Radio Cognitive Network (CRCN) supports multi-interface multi-channel functions in Network Simulator 2 (NS-2). However, CRCN only supports cognitive functions to two MAC protocols that is Macng and Maccoon. Both MACs were designed...
Asynchronous iterative water filling (AIWF), which is based on Shannon Theory, distributes resources fairly among users. Unlike Game Theory that requires users to exchange packets, AIWF does not require users to exchange packets for achieving Nash equilibrium. Conventionally, AIWF computes optimal transmit power for multiple users in Gaussian Wireless Channel. In this paper, AIWF was implemented upon...
Efficient and reliable operation of the Smart Grid largely depends on performance of the communication infrastructure. This paper investigates the opportunities to use existing public IP communication paradigm instead of constructing an end to end dedicated architecture confining to Smart Grid applications. Even though this concept is favorable as means of decreasing the installation expenditure,...
It is mandatory to have a trustable protection scheme in each distribution system. A protection scheme is able of decreasing the impact on the energy interruption time during a disturbance situation. In order to enhance power system reliability and performance, we propose a protection coordination scheme involving direct and indirect communication between the protection devices towards a Smart Grid...
Many protection and control schemes highly depend on the quality of the underlying communications. Communications availability and reliability have a direct impact on security and dependability of the protection systems. Classical use cases include but are not limited to line differential protection, teleprotection schemes, etc. This paper analyzes how the quality of the underlying communications...
Any physical channel of communication offers two potential reasons why its capacity (the number of bits it can transmit in a unit of time) might be unbounded: (1) (Uncountably) infinitely many choices of signal strength at any given instant of time, and (2) (Uncountably) infinitely many instances of time at which signals may be sent. However channel noise cancels out the potential unboundedness of...
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.