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Wireless caching enables popular files to be stored at the base stations (BSs) in advance, which has been considered as an efficient way to reduce the service delay and alleviate heavy burdens on the backhaul links. In this paper, we study the BS clustering scheme for the cooperative wireless caching networks (CWCNs) with heterogeneous file preference among users and BSs, and propose the minimum cost...
To meet the ever-increasing demands on higher throughput and better network delay performance, 60 GHZ networking is proposed as a promising solution for the next generation of wireless communications. To successfully deploy such networks, its important to understand their performance first. However, due to the unique fading characteristic of the 60 GHz channel, the characterization of the corresponding...
In this paper, we analyze the problems of existing Service Computing model and propose a closed-loop mechanism for service evaluating and discovering on the Internet which is not only compatible with the basic principles of Service Computing--loosely coupled, protocol independent and location transparent, but also can rank, classify and recommend services based on their real-time performance. This...
As the number of Web service providers grows, redundancy becomes prevalent with many WS providers offering the same or similar services. Many models have been proposed to measure the QoS (quality of service). This paper is trying to address the Web service ranking problem based on QoS. A Web service relevancy ranking algorithm based on QoS parameters has been presented for the purpose of finding the...
The rapid increasing of similar Web services in the Internet, as well as enhancements of requirements for quality of service (QoS) by users, had created great challenges for Web service composition. We propose an optimized method for Web service composition on the basis of semantic Web. Web service is described by fuzzy Horn clause, and a QoS-oriented Web service composition model is built by fuzzy...
Increasing the efficiency and accuracy on dynamic optimization choosing of Web service composition is the key point of researching on service composition. In allusion to 1 the way that we use a shortest path based on a weighted tree to describe the Web service composition question, users can set the Qos attribute weight to translate their preference and satisfaction into certain constraints on service...
Service consumer ranking are used by many existing computing models for reputation. Although a variety of methods are proposed, the subjectivity and scarcity of service consumer ranking can hardly be overcome. Moreover, service consumers cannot find service providers with high reputations as well as satisfying their QoS constraints. In order to solve these problems, we proposed an extensible computing...
Unreliable failure detectors have been an important abstraction to build dependable communication applications over iSCSI storage systems subject to faults. Their implementations are commonly based on timeouts to ensure iSCSI processes termination. However, for systems built on the Internet, it is hard to estimate this time value because traffic variations. In order to increase the quality of service...
Vertical handoffs between different wireless technologies usually lead to dramatic changes in the link capacity. A successful QoS solution for vertical handoffs must be able to fast track the capacity changes and agilely adapt the delivery rates and qualities of the ongoing applications. Though traditional AIMD-based source adaptation schemes (as found in TCP, TFRC, etc.) have been well designed for...
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