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.
Wireless Access in Vehicular Environments (WAVE) protocol stack is the most important protocol used to allocate spectrum for vehicular communication. The capabilities of WAVE to provide reliable exchange of safety information are questionable. In a previous work, we suggested a system that employs cognitive networks principles to increase the spectrum allocated to the control channel (CCH) by the...
With the concept of smart grid appear, the power grid is strengthening their own grid monitoring maintenance gradually by technology, specially to its built on overhead transmission line's construction, maintenance and monitoring. Because the working places are usually in the wild and remote areas, so how to keep the communication link unobstructed, and how to keep a real-time communication between...
Overlay networks based on the P2P paradigm have been successfully employed to facilitate reliable data transport. They are used to improve the dependability of traffic flows between end-hosts without changing the underlying infrastructure. By observing connections between neighbours, the overlay can predict the statistical behaviour of the network and can thus select proper routes. In particular,...
Power consumption of nodes in ad hoc networks and fixed network is major issue in current world. The lifetime of network will be improved by suitably reducing the requirement of power for connections. There is a challenge to provide QoS solutions that operate seamlessly over wired-wireless domains and maintain end-to-end QoS with user mobility. In this paper we have proposed different QoS Multipath...
Multicasting protocols can be used to improve the efficiency of the wireless links in Mobile Ad hoc Networks when sending multiple copies of messages from multiple sources to multiple receivers. In this paper, a Source initiated Mesh and soft-state based QoS Probabilistic multicast routing protocol (SQMP) for MANETs is proposed. SQMP is inspired from the ant colony's route finding algorithm through...
Wireless data broadcasting systems are typically assigned limited operational bandwidth due to their usually wide spatial coverage. This limitation raises issues of increased client waiting times, especially as the total size of the data to be disseminated increases. This problem could be partially or fully resolved by offloading part of the data to local mobile ad hoc subsystems. To this end, a novel...
Cognitive radio has been suggested as an efficient method for secondary users to promote the efficient utilization of spectrum. Meanwhile, Cooperative relay allows different users or nodes to share resources and to create collaboration through distributed transmission in a wireless networks. The combination of Cognitive radio with cooperative communication could significantly improve the system performance...
In this paper, we have implemented Multipath routing algorithms for heterogeneous network. Multipath routing separates the traffic among different paths to minimize congestion in terms of multiple alternative paths through a network which can provide a variety of benefits such as minimize delay and congestion, maximize bandwidth, or improved security. We propose a newly improved QoS multipath routing...
Mobile ad-hoc network (MANET) communication is challenging as they are dynamic in nature. We propose a MANET routing protocol considering the QoS (Quality of Service) parameters such as bandwidth efficiency, link stability and power metric. The idea of learning the network status information to enhance network routing is the key concept of our project. This helps to learn about the expiry of links...
Recently, quality-of-service routing in dynamic, wireless multi-hop ad hoc networks becomes a hot research topic, and various QoS protocols are proposed. However, popular QoS routing protocols rarely provide multiple routes. Once links break due to node mobility, establishment of new routes leads to large control overhead and extra end-to-end delay. We design a quality-of-service routing protocol,...
Practical implementation of balanced data routing algorithms in WSNs is challenging because of the heterogeneity among nodes inherited from the physical world in forms of different amount of nodal traffic, residual energy, data transmission rate and bandwidth. As the main concern in sensor networks is preserving nodes' energy, such algorithms should balance energy depletion among nodes by carefully...
Most of the routing and replication algorithms for Mobile Peer to Peer (M-P2P) networks assume the network to be large and therefore, the architecture and algorithms are designed to be scalable. These algorithms however may not perform well with limited number of nodes in a network such as of UAVs. Thus, it is better to design algorithms to increase the efficiency of a small network if scalability...
In today's Internet age, web-based applications are an extremely logical way to disseminate, update, and visualize information. Our modern wired infrastructure and high-speed wireless access points make it possible to access high-bandwidth demanding applications from nearly everywhere. However, in places where infrastructure does not exist, and where information needs to be disseminated over areas...
Multicasting communication serves as one critical operation to support many applications of Mobile Ad hoc networks (MANETs) that achieve group communication rather than pairs of individuals. Multicast routing protocols becomes increasingly important in MANETs because they effectively coordinate a set of nodes. Also, it provides efficient routing for multimedia applications such as video conferences,...
A distributed approach to perform admission control in multi-hop ad hoc networks is proposed. Existing algorithms normally compute the total amount of available resources in the network, however our method evaluates if there are sufficient resources to satisfy the bandwidth demand of a new incoming flow rather than quantifying the total amount, which is impractical when considering implementation...
Wireless Mesh Network technology refers to technology that establishes a wireless network whose transmission speed is similar to that of a wired system. It provides enhanced flexibility in the building of the network, compared to the existing wired network. In addition, it has lower mobility and less restriction from the energy effect. However, there are many considerations, such as system overhead,...
A Mobile Ad Hoc Networks (MANETs) is a collection of mobile nodes that can communicate with each other using multihop wireless links without utilizing any fixed based station infrastructure and centralized management. It is very necessary for MANETs to have an efficient routing and quality of service (QoS) mechanism to support diverse applications. Multipath routing allows the establishment of multiple...
Wireless cellular networks are large-scale networks in which asymptotic capacity investigation is no longer a cliché. A substantial body of work has been carried out to improve the capacity of cellular networks by introducing ad hoc communications, resulting in the so-called multihop cellular networks. Most of the previous research allows ad hoc transmissions between certain source and destination...
Cooperation among mobile nodes during establishment of a cellular connection can improve the performance of the network by lowering the transmission power and increasing throughput of the end nodes. Multipath routing is one way for such cooperation by using multiple parallel paths between source and destination nodes, where the main data stream is split into streams of lower data rates and routed...
With the rapid development of the mobile device technology and wireless network technology, the need of an efficient file sharing method on wireless network becomes more and more significant. Peer-to-Peer(P2P) file distribution, as a quite popular method being used now, is a promising choice. However, the limitation of bandwidth of wireless networks greatly restricts the performance of wireless P2P...
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.