49,060 research outputs found
Gossip-based service monitoring platform for wireless edge cloud computing
Edge cloud computing proposes to support shared services, by using the infrastructure at the network's edge. An important problem is the monitoring and management of services across the edge environment. Therefore, dissemination and gathering of data is not straightforward, differing from the classic cloud infrastructure. In this paper, we consider the environment of community networks for edge cloud computing, in which the monitoring of cloud services is required. We propose a monitoring platform to collect near real-time data about the services offered in the community network using a gossip-enabled network. We analyze and apply this gossip-enabled network to perform service discovery and information sharing, enabling data dissemination among the community. We implemented our solution as a prototype and used it for collecting service monitoring data from the real operational community network cloud, as a feasible deployment of our solution. By means of emulation and simulation we analyze in different scenarios, the behavior of the gossip overlay solution, and obtain average results regarding information propagation and consistency needs, i.e. in high latency situations, data convergence occurs within minutes.Peer ReviewedPostprint (author's final draft
Cross-Layer Optimization in OFDM Wireless Communication Network
The wide use of OFDM systems in multiuser environments to overcome problem of communication
over the wireless channel has gained prominence in recent years. Cross-layer Optimization technique
is aimed to further improve the efficiency of this network. This chapter demonstrates that significant
improvements in data traffic parameters can be achieved by applying cross-layer optimization tech-
niques to packet switched wireless networks. This work compares the system capacity, delay time and
data throughput of QoS traffic in a multiuser OFDM system using two algorithms. The first algorithm,
Maximum Weighted Capacity, uses a cross-layer design to share resources and schedule traffic to users
on the network, while the other algorithm (Maximum Capacity) simply allocates resources based only
on the users channel quality. The results of the research shows that the delay time and data throughput
of the Maximum Weighted Capacity algorithm in cross layer OFDM system is much better than that of
the Maximum Capacity in simply based users channel quality system. The cost incurred for this gain is
the increased complexity of the Maximum Weighted Capacity scheme
Managing ubiquitous eco cities: the role of urban telecommunication infrastructure networks and convergence technologies
A successful urban management system for a Ubiquitous Eco City requires an integrated approach. This integration includes bringing together economic, socio-cultural and urban development with a well orchestrated, transparent and open decision making mechanism and necessary infrastructure and technologies. Rapidly developing information and telecommunication technologies and their platforms in the late 20th Century improves urban management and enhances the quality of life and place. Telecommunication technologies provide an important base for monitoring and managing activities over wired, wireless or fibre-optic networks. Particularly technology convergence creates new ways in which the information and telecommunication technologies are used. The 21st Century is an era where information has converged, in which people are able to access a variety of services, including internet and location based services, through multi-functional devices such as mobile phones and provides opportunities in the management of Ubiquitous Eco Cities. This paper discusses the recent developments in telecommunication networks and trends in convergence technologies and their implications on the management of Ubiquitous Eco Cities and how this technological shift is likely to be beneficial in improving the quality of life and place. The paper also introduces recent approaches on urban management systems, such as intelligent urban management systems, that are suitable for Ubiquitous Eco Cities
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