Godkända
Analysis of QoS and QoE aspects for copper-based mobile backhaul
Carl Bjerggaard (2008) och Johan Hallberg (2008)
Start
2013-01-01
Presentation
2014-03-14 13:30
Plats:
E:3139
Avslutat:
2014-06-13
Examensrapport:
Sammanfattning
Mobile IPTV, Internet Protocol Television, together with OTT, Over The Top, are amongst the most important Internet based services today and will continue to be so in the future. This puts new requirements on both xed access and mobile networks to provide the end-users with the same QoE, Quality of Expe- rience, as with Terrestrial Broadcasted Television. To achieve the same quality in mobile networks a higher capacity in the RAN, Radio Access Network, is needed. To attain this, small cells, e.g., microcells, picocells and femtocells can be placed close to the subscribers and connected to the pre-existing xed ac- cess network. Thus, the mobile backhaul, the intermediate link between the core network and the wireless access network, will be extended to the small cells near the subscribers. Since a majority of the existing xed access network technology consists of xDSL based access networks the mobile backhauls will to a great extent rely on xDSL. This change will have an impact on the QoS for mobile IPTV and OTT services, e.g., signal-to-noise ratio, latency, bit-rate, packet loss and particularly the QoE. This concept of converging the xed and mobile access networks is called structural convergence. Moreover, the xed and mobile access networks of today have been devel- oped independently and are strictly separated both functionally and physically. Hence, they dier in regard to network interfaces, access technologies, network functionalities, etc., and thus must be able to share the same network infrastruc- ture. This way of sharing the infrastructure is called functional convergence. <p>This master thesis aims to study and analyse dierent known methods for QoS parameter estimation with a focus on QoE. The QoS parameters will be measured on the physical, link and network layer of the OSI model, respec- tively, and the QoE on the application layer. Further, investigations of possible correlations between the QoS and QoE parameters will be conducted to better understand the impact of the QoS on QoE. In addition, their applicability on mobile backhauls relying on xDSL based access networks will be evaluated and it is of uttermost importance to investigate where in the mobile network the dif- ferent methods can be applied. Finally, one or more of the suggested methods will be implemented and tested to predict QoE by analysing video streams.
Handledare: Daniel Cederholm (Ericsson Research) och Stefan Höst (EIT) och Jens A Andersson (EIT)
Examinator: Stefan Höst (EIT)