Multimedia Storage System Providing QoS in Cloud Based Environment

Cloud computing and mobile computing are moderately new trend in Information Technology which are growing rapidly. Mobile devices are replacing personal computers by joining large mobile networks and are effortlessly switching between different network providers. Currently, to maintain network connectivity all the time different service handover mechanisms is used so that cloud services can be accessed by user without any interruption. In this scenario, if user mobility is considered, then he is connected to its local cloud to access the different cloud services. As user is moving from one geographical location to another because of this mobility factor network congestion increases which causes degradation in QoS. For this reason a framework is introduced which will deliver services to the users to improve QoS in order to provide better QoE to the clients. In this paper, we are further developing this framework in which an algorithm is designed in service delivery layer which will help for better solution to the efficient management of network resources while providing a high QoE for the clients. And as the demand for specific services increases in a location, using this framework it will be more efficient to move those services closer to that location. This framework will help to reduce high traffic loads due to multimedia streams and will offer service providers an automated resource allocation and management mechanism for their services

Performance evaluation of the TFD-capable dynamic QoS assurance of HD video streaming in well-dimensioned network

The Traffic Flow Description (TFD) option of the IP protocol is an experimental option, designed by the Authors and described by the IETF’s Internet Draft. This option was intended for signalling for QoS purposes. Knowledge about forthcoming traffic (such as the amount of data that will be transferred in a given period of time) is conveyed in the fields of the option between end-systems. TFD-capable routers on a path (or a multicast tree) between the sender and receiver(s) are able to read this information, process it and use it for bandwidth allocation. If the time horizons are short enough, bandwidth allocation will be performed dynamically. In the paper a performance evaluation of an HD video transmission QoS assured with the use of the TFD option is presented. The analysis was made for a variable number of video streams and a variable number of TCP flows that compete with the videos for the bandwidth of the shared link. Results show that the dynamic bandwidth allocation using the TFD option better assures the QoS of HD video than the classic solution, based on the RSVP protocol

Mobile Oriented Future Internet (MOFI)

This Special Issue consists of seven papers that discuss how to enhance mobility management and its associated performance in the mobile-oriented future Internet (MOFI) environment. The first two papers deal with the architectural design and experimentation of mobility management schemes, in which new schemes are proposed and real-world testbed experimentations are performed. The subsequent three papers focus on the use of software-defined networks (SDN) for effective service provisioning in the MOFI environment, together with real-world practices and testbed experimentations. The remaining two papers discuss the network engineering issues in newly emerging mobile networks, such as flying ad-hoc networks (FANET) and connected vehicular networks