A MAP-2 based quality of experience model for voice and multi-media services in next generation networks

摘要

In the past, single service networks such as the PSTN were relatively simple to design and dimension in order to meet specific service objectives. The arrival of Next Generation Networks (NGN) based upon IP technology and supporting multiple service types has meant greater challenges for network designers, managers and planners as customers may experience a wide range of different performance levels depending on the nature of the service that they are using. NGN network services share network resources so they may be impacted on by failure of network elements that provide connectivity as well as by elements that are part of the service delivery — which in turn may be affected by traffic levels of completely different service types. This paper looks at voice and multi-media services and develops models for analytically estimating Quality of Experience measures so that they can be used in models to design and dimension Next Generation Networks.