Optimization of application QoS protocols for 3G/4G mobile networks
Gordana Gardašević, Milojko Jevtović, Philip Constantinou · WSEAS TRANSACTIONS on COMMUNICATIONS archive · 2008
The importance of Quality of Service (QoS) provisioning has become one of the central issues of 3G/4G mobile network design and analysis. Mobile multimedia applications have high demands in terms of available network resources, equipment design and QoS performances. The variety of new applications (TV program distribution, tele-engineering, high definition video telephony, medical applications, location-based services, etc.) deployed in modern mobile networks implies the necessity for precise and consistent analysis. Most of the research activities in this field have been oriented to the areas of system, network, transport and middleware support for QoS. On the other side, there is a lack of proposed architectures and protocols for implementing an overall adaptive application QoS support. The challenging task for research activities is the creation of an adaptive application QoS protocol suit in order to obtain optimal QoS performance. The selection of the appropriate metrics for performance evaluation represents an important step for establishing the application QoS profile. In this paper we identify key adaptation issues and propose the architectural framework for application level QoS adaptation.