1. JYVÄSKYLÄN YLIOPISTO 2007 Quality of Service Studies in Telecommunication Laboratory Olli Alanen Telecommunication Laboratory 22.3.2007

2. JYVÄSKYLÄN YLIOPISTO 2007 Projects  TeraBitti (1999-2004) - QoS in IP and MPLS networks  PalHaLa (2004-2006) – IPTV pilot network and related services were built  VizTool (2004-2006) – Prototype of future network management software  LaiLa (2006-2008) – Managing and monitoring of the new services in heterogeneous wireless networks  WiMALE (2005-…) – WiMAX MAC layer QoS studies in ns2 (Network Simulator 2)

3. JYVÄSKYLÄN YLIOPISTO 2007 LaiLa / PalHaLa  IPTV Test Network with following services to digital set- top-boxes / televisions: –IPTV (possibility for free and pay channels) –Video-on-Demand (VoD) –Game Channels –Network PVR –WWW, e-mail, EPG, Billing, … –…

4. JYVÄSKYLÄN YLIOPISTO 2007

5. JYVÄSKYLÄN YLIOPISTO 2007 IPTV Channels

6. JYVÄSKYLÄN YLIOPISTO 2007 Game Servers

7. JYVÄSKYLÄN YLIOPISTO 2007 Remote recording service

8. JYVÄSKYLÄN YLIOPISTO 2007 VoD / Playback of recordings

9. JYVÄSKYLÄN YLIOPISTO 2007 Pay channels

10. JYVÄSKYLÄN YLIOPISTO 2007 Dynamic bandwidth regulation

11. JYVÄSKYLÄN YLIOPISTO 2007 Nokia 770 Case  Linux Open Source library called Gstreamer was used to create a content adaptation server  MPEG2 IPTV-broadcast is transcoded to MPEG4 in real- time  Nokia 770 Linux PDA received the adapted stream using WLAN  This work is continuing currently and one MSc will be finalized about it on this year

12. JYVÄSKYLÄN YLIOPISTO 2007 Nokia 770 Case

13. JYVÄSKYLÄN YLIOPISTO 2007 VizTool IPTV Case

14. JYVÄSKYLÄN YLIOPISTO 2007 Pricing based scheduling and classification  Simulator studies on ns2 and MatLab  Basic idea is to do scheduling decisions based on the revenue of the network operator  Each service class has its own cost function for bits and delay  Several PhD theses have been completed on the subject

15. JYVÄSKYLÄN YLIOPISTO 2007 Pricing Based Scheduling

16. JYVÄSKYLÄN YLIOPISTO 2007 Pricing Based Scheduling

17. JYVÄSKYLÄN YLIOPISTO 2007 WiMAX QoS Studies  We have implemented WiMAX (802.16) to ns2 simulator –Most (the important ones) of the MAC layers functionalities –Some PHY level issues  Our research is concentrated on the WiMAX QoS –WiMAX can support strict QoS requirements on MAC level –Features, such as: Scheduler / scheduling of the service classes Contention parameters Polling issues ARQ parameters VoIP specialties –… are studied

18. JYVÄSKYLÄN YLIOPISTO 2007 WiMAX QoS Studies  Currently only PMP mode is supported –Mesh-mode is in future plans  In co-operation with Nokia Research Center since 2005  Conference and journal articles have been wrote  Also MSc and PhD theses on the subject are done

19. JYVÄSKYLÄN YLIOPISTO 2007 Example simulation scenario  30 VoIP connections  One background connection (Best Effort / TCP)

20. JYVÄSKYLÄN YLIOPISTO 2007 Results  In this scenario static parameters and our adaptive method were compared to each others

21. JYVÄSKYLÄN YLIOPISTO 2007 The end! Thank you!