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.
Residential gateways play a key role in providing internet access to home consumers. Nowadays, users in the same home with heterogeneous applications share a common gateway. As such, the gateway becomes the bandwidth bottleneck, leading to impairments and negatively affecting users' Quality of Experience (QoE). In the case of delay sensitive applications like video streaming and online gaming, this...
One of the most promising advantages of Web service technology is the possibility of creating added-value services by composing existing ones. A key step for composing services lies in the selection of the individual services. In this paper, we propose an approach for selecting optimal Web service composition plan and optimal candidate services, aimed at maximizing service quality and minimizing risk...
A solution is urgently expected to meet the higher-quality service requirements of various applications on the limited bandwidth of wireless networks. Based on the ideas of dynamic load adaptation and priority-based service, this paper presents a new analysis model of MAC protocol of wireless communication network with reference to the solutions presented recently to IEEE 802.11 PCF, making possible...
Polling systems are widely used in communication systems and computer networks. The discrete-time asymmetric two-tier exhausting and gated polling system is proposed in the paper. On the basis of embedded Markov chain and generating function, mean queuing delay derivative characteristics has been obtained. By use of mathematics analysis and computer simulations, we have analyzed the system performances...
Recently many countries have kept studying on the methods of constructing ultra speed networks. Task Force team for IEEE 802.3ah has accomplished the standardization of EPON which is the next generation subscriber access network. EPON doesn't still have the bandwidth wide enough to support the new service which demands high bandwidth. Therefore 10 G EPON is the next generation subscriber access network...
We studied a class of Service Overlay Network (SON) capacity allocation problem. By analyzing the problem with two different nonlinear optimization formulations, we show that the prices of offering service guarantees are closely related to a set of Lagrange multipliers. Moreover, if the Grade of service (GoS) constraints are not hard requirements, the network design resulting from the set of prices...
An efficient polling system with M-gated services is considered. The system consists of N stations, the packets of the station have been provided with M-gated services in continuous time. By the embedded Markov chain theory and the probability generating function method, we derived the closed form expressions for the mean queue length, the mean cyclic period characteristics of the system, and the...
The use of network-based streaming applications such as YouTube and BBC iPlayer is rapidly increasing. These applications consume data at very high rates and so quality- of-service (QoS) support is necessary to ensure that they do not stall. Since the access pattern of streaming applications is highly sequential, prefetching can be employed to improve overall performance. For network access, clustering...
The integration of different wireless technologies is the emerging trend in providing ubiquitous access to the high data rate wireless network. In such system user will be roaming among different radio access technologies (RATs) and this is known as vertical handover/handoff. In order to understand the practical behavior of the system, the Performability model is found to be essential. In wireless...
In this paper, we introduce a pricing model that ensures efficient resource allocation that provides guaranteed quality of service while maximizing profit in multiservice networks. Specifically, a dynamic allocation policy is examined that relies on online measurements while each service class operates under a probabilistic bound delay constraint. We present a rigorous analysis of the properties of...
As Grid networks grows, the complexity of resource management in Grid networks dramatically increases. To manage the Grid resources efficiently, policy based resource management system is suitable. However, the policy which made at a moment could not be appropriate to other time because the condition of the grid resources with time space changes. Thus, in this paper, we propose asynchronous policy-based...
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.