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.
Due to increased adoption of digital consumer services, Mobile Ad-hoc Networks (MANETs) are gaining importance in real-life business applications. MANETs are wireless networks consisting of a set of mobile nodes and enables multi-hop peer-to-peer routing without any requirement of predefined infrastructure for its deployment. There are several works in literature for improving the Quality of Service...
Wireless mesh networks (WMNs) offer dependable and scalable solutions for services utilizing large bandwidth. Enhancement in the deployed number of applications based on wireless mesh networks necessitated a corresponding increased demand for higher bandwidth. This paper proposes a framework for effective management of bandwidth in WMNs making use of the concepts of cross layer design and ant colony...
This article mainly describes the Ad hoc on-demand QoS routing based on Bandwidth Prediction (AQBP). Differing from the existing QoS routing protocols, AQBP takes node future bandwidth into consideration when selects route. The future bandwidth requirement of each node is predicted by its history. The performances of throughput, transmission ratio and delay among AODV, AQOR and AQBP have been simulated...
The use of mobile ad hoc networks has increased in popularity recently, with this their need to support real time and multimedia applications is growing as well. The growing use of multimedia applications and the small degree of tolerance these applications demand in terms of session bandwidth, end-to-end delay, jitter and information loss has sparked increased interest towards the design and development...
We investigate the benefits of distributed storage using erasure codes for file sharing in vehicular networks through realistic trace-based simulations. We find that coding offers substantial benefits over simple replication when the file sizes are large compared to the average download bandwidth available per encounter. Our simulations, based on a large real vehicle trace from Beijing combined with...
MANETs are networks capable of communicating in a set of small, low cost, low power sensing devices. A wireless sensor networks is totally based on the limiting factor i.e. energy consumption. A wireless sensor network consists of large number of sensor nodes distributed or scattered in particular network region. MANETs consist of node that is highly mobile, so in particular the range of the nodes...
To improve driving comfort and provide entertainment services, vehicular communication networks (VCNs) have appeared as an emerging solution, which consists of road-side units (RSUs) and on-board units (OBUs) to distribute multimedia contents. However, as most of OBUs always request the stored contents in the RSUs, how to update the contents in these RSUs when the original changes at its original...
Many shortest path routing protocols have been proposed neglecting the effect of lower layers. Here, the Modified Ad-hoc On Demand Distance Vector routing based on Bit Error Rate (MAODV-BER) is proposed, where the route discovery of AODV has been modified to achieve the stable route by obtaining Bit Error Rate (BER) information from physical layer through cross-layer approach. Due to the use of multimedia...
QoS routing protocol has become a hot research spot. However, it is difficult to offer guaranteed QoS, such as bandwidth, delay and delay jitter. To solve this problem, we proposed a Delay-Minimized Routing protocol based on Bandwidth Estimation (DMR-BE) that incorporates an admission control scheme and a route decision scheme to meet the QoS requirement of bandwidth and real-time applications. Bandwidth...
With the development of Ad Hoc Network, the demand of the users becomes more and more than ever before, some business requires the ability not only to communicate, but also to guarantee delay and bandwidth. This paper puts forward a QoS-based multipath routing protocol QMPSR. It takes bandwidth and delay constraint into account, it can find several paths to provide QoS guarantee. Simulation shows...
Much work has been done on routing in Ad-hoc networks, but the proposed routing solutions only deal with the best effort data traffic. Connections with Quality of Service (QoS) requirements, such as voice channels with delay and bandwidth constraints, are not supported. The QoS routing has been receiving increasingly intensive attention, but searching for the shortest path with many metrics is an...
To improve the stability and efficiency of routes, and satisfy the QoS requirements simultaneously, a novel multiple constrained ACO based QoS routing algorithm suitable for tactical MANETs (MC-AQRA) is proposed. MC-AQRA uses location information to estimate the link's lifetime, and integrates link lifetime and node congestion into conventional QoS requirements such as bandwidth and delay, therefore...
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...
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...
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...
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...
Mobile Ad Hoc Networks (MANETs) have been an important research topic for the last years, playing a crucial role within the fast growing sector of mobile communications. At the same time, video applications over mobile devices are becoming widely used by nowadays mobile clients, where the quality in the transmission of such contents will determine the success of these applications in the future. Therefore,...
A wireless ad-hoc network is an autonomous system of wireless routers, fixed or mobile those communicate with each other via radio links without the support of any fixed wired infrastructure. In such a topology, communication is achieved by use of multiple hop paths between the sender and the receiver. Wireless ad-hoc networks constitute a typical paradigm of networks whose performance and operability...
Ad hoc networks (AHNs) include mobile nodes with limited communication resources on which the path selection is usually made according to a best effort strategy. Today, AHNs are facing a new challenge: a resources reservation mechanism oriented quality of service. The importance of this challenge makes this issue focused by several researchers. In this paper we propose a flexible QoS reservation mechanism...
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.