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The service delivery model of cloud computing acts as a key enabler for big data analytics applications enhancing productivity, efficiency and reducing costs. The ever increasing flood of data generated from smart phones and sensors such as RFID readers, traffic cams etc require innovative provisioning and QoS monitoring approaches to continuously support big data analytics. To provide essential information...
Service-oriented computing is a widely adopted paradigm in real applications. Considering the continuous evolution of services, adaptive service composition has always been a major concern. It is a big challenge to adjust the composition to be optimal in real-time. In this paper, a learning automata-based approach is proposed to attack this problem. It consists of two important components: random...
Since the emergence of Web services and the diversity of user's devices, an emerging need for adapted web services appeared. In fact, users aim to find web services meeting their requests, contexts and desired QoS. In order to achieve this goal, we propose in this paper a framework to find and select adaptable web services. Our framework is named QoS-ASF and it is based on a multi-agent system.
This paper analyzes the execution behavior of web services on devices with limited resources. The experiments compare web services in the Axis2 and CXF frameworks analyzing performance and power consumption. To determine which framework is better suited for service provision, a testing environment and a performance and energy evaluation between them are presented. We show that the Raspberry Pi can...
This report gives a brief overview of the main concerns addressed by the authors at the second international track on Formal Verification of Service Based Systems, held at WETICE 2014 conference. A presentation of the main topics is given and then a summary of the paper accepted by this conference track is reported.
The third track of MADYNE continues to look after models of relationship between enterprises seen from business process management perspective. This track aims to promote concepts, solutions, and approaches for automating dynamic management, interoperability and integration of networked collaborative enterprise applications. Several models and technologies are being developed and deployed to consolidate...
With the rapid development of cloud computing, cloud services and human life has been closely together. In recent years, cloud services are widely used by everyone. With network technology advanced, network accessing for data transmission become more and more important and using the applications through cloud computing has become a new trend. Before embracing cloud computing, there are some issues...
In recent years, developing needed software applications via the technique Web Service Composition (WSC) has been more and more popular. Moreover, benefit from the Semantic Web Services (SWSs) technology, it is possible to even automatically conduct WSC, i.e. the Automated Web Service composition (AWSC). Currently the AWSC is a well-studied research subject and which means the existence of a large...
The application based on P2P technology is one of the most important application of the Internet, but it is often affected by the node failure or abnormal nodes exit. In P2P network, node failure can cause data loss and invalid index, then reduce QoS (Quality of Service) of P2P network, lead to reputation system crashes and so on. Therefore the P2P node failure handling and recovery method can effectively...
The problem of quality of services providing at predetermined level and maintaining particular parameters of IT-infrastructure elements and services in a given range of quality was considered. Method of quality functioning estimation of the information and telecommunication systems elements based on analysis of functioning parameters of these elements, with the use of fuzzy neural network ANFIS was...
The use of small cells has been proposed to increase system capacity by installation of base stations close to user location. Proximity of the base station with the user equipment also implies lesser power requirement for transmitting the same information. Thus one may expect improvement in energy efficiency. But installing a large number of base stations can also lead to an increase in the total...
This paper presents a generic approach for dimensioning LTE/LTE-A cellular networks. Dimensioning is the first step of cellular network planning that determines the approximate number of base stations (BSs) needed to cover a certain area. The proposed approach takes into account user density, service subscriptions, resource allocation, and interference mitigation. It can be implemented in heterogeneous...
In this paper, the optimization of base station (BS) deployment is investigated. After determining an approximate number of required BSs to cover an area of interest, the positions of these BSs are determined using the simulated annealing (SA) algorithm. Deployment using SA is compared to a benchmark approach consisting of a uniform deployment of the BSs over the area of interest. Scenarios with uniform...
In this work we seek to achieve VoIP end users' profile privacy without violating the QoS constraints on the throughput, end to end delay, and jitter, as these parameters are the most sensitive factors in multimedia applications. We propose an end-to-end user anonymity design that takes into consideration these constraints in a hybrid environment that involves ad-hoc and infrastructure networks. Using...
The widespread usage of smartphones reveal the necessity of higher data rates in mobile communication networks. LTE, one of the 4th generation cellular technologies, has been developed to meet high capacity needs. LTE enables the digital convergence via carrying audio, video and data traffic over IP packets. In this paper, a novel LTE downlink scheduling algorithm is designed to support Quality of...
As a key enabler of Internet of things, cellular network based Machine-to-Machine (M2M) communications have been growing rapidly in recent years, being used in a wide range of services such as security, metering, health, remote control, tracking, and so on. A critical issue in M2M communications is the energy efficiency as typically the machine devices are powered by batteries of low capacity and...
Wireless Multimedia Sensor Networks (WMSNs) are considered as one of the most prominent infrastructures for human-centric multimedia applications due to the wide availability of low-cost hardware such as microphones and CMOS cameras. By virtue of the energy limitations on sensor nodes alongside the explicit highly demanding bandwidth requirements of real-time multimedia applications, these particular...
The paper investigates the balance between Quality of Service (QoS) and power consumption for a traffic queue. Automatic adaptation to the power of the packet processing engine is sought through a heuristics and an optimal control strategy. The study allows to track the behavior of the system over time, thus avoiding the optimization of the steady state behavior of the system, which is hardly applicable...
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