JYVÄSKYLÄN YLIOPISTO 2007 Quality of Service Studies in Telecommunication Laboratory Olli Alanen Telecommunication Laboratory
JYVÄSKYLÄN YLIOPISTO 2007 Projects TeraBitti ( ) - QoS in IP and MPLS networks PalHaLa ( ) – IPTV pilot network and related services were built VizTool ( ) – Prototype of future network management software LaiLa ( ) – Managing and monitoring of the new services in heterogeneous wireless networks WiMALE (2005-…) – WiMAX MAC layer QoS studies in ns2 (Network Simulator 2)
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, , EPG, Billing, … –…
JYVÄSKYLÄN YLIOPISTO 2007
JYVÄSKYLÄN YLIOPISTO 2007 IPTV Channels
JYVÄSKYLÄN YLIOPISTO 2007 Game Servers
JYVÄSKYLÄN YLIOPISTO 2007 Remote recording service
JYVÄSKYLÄN YLIOPISTO 2007 VoD / Playback of recordings
JYVÄSKYLÄN YLIOPISTO 2007 Pay channels
JYVÄSKYLÄN YLIOPISTO 2007 Dynamic bandwidth regulation
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
JYVÄSKYLÄN YLIOPISTO 2007 Nokia 770 Case
JYVÄSKYLÄN YLIOPISTO 2007 VizTool IPTV Case
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
JYVÄSKYLÄN YLIOPISTO 2007 Pricing Based Scheduling
JYVÄSKYLÄN YLIOPISTO 2007 Pricing Based Scheduling
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
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
JYVÄSKYLÄN YLIOPISTO 2007 Example simulation scenario 30 VoIP connections One background connection (Best Effort / TCP)
JYVÄSKYLÄN YLIOPISTO 2007 Results In this scenario static parameters and our adaptive method were compared to each others
JYVÄSKYLÄN YLIOPISTO 2007 The end! Thank you!