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.
As a new computing paradigm, Cloud computing has been advocated by IT industry and academia. It can provide lots of services, however, how to manage these services and guarantee the quality of service, has become one of the key factors for the development of Cloud computing. This paper proposes a hierarchical architecture model of Cloud services resources management and monitoring by integrating the...
As cloud computing grows rapidly and virtualization techniques become more widely-used, it is critical and important to allocate limited resources to various applications on demand for the cloud service environments. In this article, we propose an adaptive resource management approach considering multi-resource transformation to fully utilize extra resource capacity. The definition of the optimization...
Protocol with QoS guarantee in unidirectional MANET is very important. Many of the classical routing protocols are put forward on the basis of two-way communication. While there exits unidirectional link because of differences in transmission power in each terminals as well as environmental factors such as topography and so on. This paper studies and applies the shortest path method based on graph...
The channel of Low Voltage Powerline Carrier Network is known for its hostile nature in transmitting electrical signal, nodes of the network are not stationary and the network topology is time varying volatility. So in order to reduce the collision in utmost level, to improve the successful probability of communication and to guarantee the real-time of data packet and the stability of Medium Access...
All of the traditional switch can not distinguish the different traffic classes accurately, in order to provide a better QoS for various traffics existing already and potential unknown future traffic, we considers the problem from the all new angle and propose a novel CICQ scheduling mechanism for differentiated QoS based on identifier. The mechanism management the network data flow in denomination...
In order to measure the quality of cloud services better, this paper proposes a measurement method, which mainly measures the quality of cloud services from two aspects: availability and performance. At the same time, it introduces a measurement framework based on plug-in. The framework can collect service information and calculate the quality of cloud services with the measurement method. It can...
Advance reservations are usually used to guarantee the QoS of Grid applications by reserving a particular resource capability over a defined time interval on local resources. AR generally results in lower utilization of local resources and longer waiting time of non-AR jobs by interrupting processing time- and/or space- frames. This paper presents a slack-based AR mechanism, in which every AR request...
Utility function theory in microeconomics is introduced into the switching fabric performance evaluation in this paper. We propose a new switch performance evaluation model-based on delay utility function, and with utility maximization theory to find out the optimum allocation scheme of network resources. And then we extend the model, integrate the two most closely to the nature of traffic flow and...
This paper introduces a new inter-domain routing scheme based on a centralized routing service: Global Path Service (GPS). This routing service provides alternate inter-AS paths different to ordinary BGP routes. This scheme facilitates diversified inter-AS forwarding paths through GPS-enabled ASes offering their inter-domain transit tunnels (e.g. MPLS). A GPS center concatenates those transit tunnels...
In Opportunistic Spectrum Access model (OSA) it is essential to have some knowledge about the primary user's activity in order to increase the QoS for the secondary users. In this paper we build an algorithm for maximum likelihood (ML) estimator to predict and estimate the channel statistics parameters upon the primary user activity. The estimator is built for a Markovian channel model in which the...
As a new form of software, the technique and standard of web services are grown to perfection day by day. However, application of web services is restricted by complex factors such as lack of user interface and effective QoS guarantee. As a result, it hasn't been used widely, which makes it necessary to provide an excellent platform to share web services resource the common people. Furthermore, since...
To guarantee the quality of service (QoS) when failure takes place, the fault-tolerant MultiProtocol Label Switching (MPLS) network should find out failures as soon as possible. This paper proposes a MPLS failure detection mechanism, named bimodal detection (BD). Based on the adaptive model (AM), it adaptively adjusts the detection period along with delay variation and occurrence of detection timeout...
This paper analyzes and compares four different mechanisms for providing QoS in IEEE 802.11 WLAN. And it evaluates the IEEE 802.11 mode for service differentiation (PCF), Distributed Fair Scheduling, Black burst, and a scheme proposed by Deng et al. using the ns-2 simulator. The evaluation covers medium utilization, access delay, and the ability to support a large number of high priority mobile stations.
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.