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Vehicle-to-Everything (V2X) communications encapsulate significant challenges as a result of the vast number of wireless technologies deployed, nodes mobility and large applications range. One of the greatest challenges is to provide adequate QoS guarantees even in this demanding environment. State-of-the-art solutions for QoS provisioning over wireless links are based on cross-layering packet schedulers...
This work develops a cloud-fog computing architecture for information-centric Internet-of-Things (IoT) applications with job classification and resource scheduling functions. The two designed functions support quality of service (QoS) by classifying IoT applications and scheduling computing resources. An innovative scheduling mechanism is developed to optimize the dispatch of cloud and fog resources...
Cloud-based Radio Access Network (C-RAN) is a promising architecture for future cellular networks, in which Baseband Units (BBUs) are placed at a centralized location, with capacity-constrained fronthaul connected to multiple distributed Remote Radio Heads (RRHs) that are far away from the BBUs. The centralization of signal processing enables the flexibility for coordinated multi-point transmission...
Web services are the key technologies for the web applications developed using Service Oriented Architecture (SOA). There are many challenges involved in implementing web services. Some of them are web service selection and discovery which involves matchmaking and finding the most suitable web service from a large collection of functionally-equivalent web services. In this paper a fuzzy-based approach...
Tasklets provide means for lightweight distributed computing. Based on virtual machines, they allow to utilize excess capacity in cloud computing as well as integrate cloud resources into mobile computing. So far, the Tasklets architecture only provides a best-effort computing abstraction while using direct addressing of peers. However, a higher level of service is often desirable, as is found in...
This paper describes an Implementation Guide for an emerging standard for autonomic management &control of networks and services, namely the ETSI AFI GANA Reference Model for Autonomic Networking, Cognitive Networking and Self-Management (an emerging standard from ETSI). The implementation guide also takes into consideration the impact of emerging paradigms such as SDN and Virtualization. This...
In this paper, we propose a skyline computation system UCOS (User Clustering based Online Skyline), which divides the computation into offline and online stages. Based on the truth that QoS similarity implies the skyline similarity, the offline stage of UCOS system dose user clustering according to the historical user-service QoS records by given distance metrics. Then, we compute the representative...
Cloud computing brings many advantages in terms of externalization, service delivery, elasticity, dependability and scalability. Nevertheless, it can be exposed to several vulnerabilities and security attacks. Therefore, we propose, in our UBIS (Ubiquity and Integration of Services) project, an architectural model that aims to satisfy cloud user requirements and cloud security challenges. For this...
Service Oriented Architecture (SOA) has become the prominent distributed computing paradigm nowadays. One of the technologies that enable the running of SOA is web services. In its nature of similar to peer-to-peer communication, web services involve customer who requests for the service and provider who provides the service. As a result, web services implementation requires a contract agreement so...
Rapid development of wireless communication technology makes our life convenient. However, it causes two issues: one is shortage of spectrum resources leads to the waste of allocated spectrum resources; the other is wireless communication standards are incompatible. Those two issues can be solved by cognitive radio networks. In this paper, current state of cognitive radio networks is discussed detailed...
Providing QoS in home networks seems to be more and more important in triple and quadruple play service scenarios. This paper focuses on the analysis of certain aspects of UPnP QoS Architecture designed to provision QoS in home networks. Basic signaling performance is discussed and preemption algorithms are proposed and evaluated.
Due to the increasing popularity of Web services technology and the potential of dynamic service selection and integration, many similar services are accessible. Quality of Service (QoS) is the main factor to differentiate similar Web services. In this paper, we propose a broker-based architecture for dynamic web service selection that facilitates the requester to specify his/her non-functional requirements...
Selection of a suitable and apposite web service for a particular goal oriented job has become a difficult challenge due to the increasing and huge number of web services offering similar functionalities. When dynamic discovery is used in Web Services to select a specific service in optimal way, it is familiar that the outcome of the discovery contains more and supplementary than one provider. From...
Large-scale virtualized infrastructures, such as those underlying cloud offerings, introduce novel, virtual variants of network components and links in addition to the well-known physical network elements. In these consolidated and generalised provisioning infrastructures, network QoS (quality of service) requirements apply not only to classic uplinks but also to storage and computing cluster interconnects:...
User-oriented QoS-provisioning is a major problem in enterprises that run a huge number of applications using a computer network. Current approaches that try to improve the level of QoS provided by a computer network just focus on the compliance with technical aspects of QoS. The user-experience and also business objectives, which depend on business processes and the dynamic behavior of the user,...
The increasing number of Web service providers throughout the globe, have produced numerous Web services providing the same or similar functionality. This necessitates the use of tools and techniques to search the suitable services available over the Web. The effective dynamic Web service selection mechanism is a challenging problem as the requester is involved in the selection having wide variety...
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