IPTV Service Assurance Challenges For A Comprehensive Solution

Transcription

1 Internatinal Telecmmunicatin Unin Internatinal Multimedia Telecmmunicatins Cnsrtium IPTV Service Assurance Challenges Fr A Cmprehensive Slutin Kaynam Hedayat CTO & VP, Engineering Brix Netwrks Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May 2006

2 New Business Requirements Risk f nt assuring the service Higher peratinal csts and expenses Custmer churn Streamline netwrk and business peratin fr faster time-t-market Need t increase ARPU and margin cntributin with bundled, high-sla services Must assure the bundle Gain market share, maximize custmer retentin Win based n quality, nt just price Build custmer lyalty Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

3 The Impact f IPTV ITU-T IPTV is very cmplex IP infrastructure, multicasting, middleware, DRM, xdsl, hme gateway, STB, etc. Increases traffic demands and netwrk perfrmance sensitivity Picture quality and respnse time is everything Users have high expectatins and lw tlerance Quality f experience is elevated Surce:Infnetics Research Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

4 IPTV Service Quality ITU-T Prblem Reasn Availability Slw Start, channel change time Picture freeze Vide/audi availability & quality Unbserved bandwidth Vide/audi synch. System/netwrk availability IGMP/netwrk perfrmance IGMP/netwrk perfrmance Packet lss & jitter IGMP perfrmance, fast channel change System cnfiguratin Key Perfrmance Indicatrs Transprt (IP) Signaling (IGMP) Cntent (Vide/Audi) Service (IPTV) One-way /rund-trip Latency (ne-way/rund-trip) Packet lss Jitter, jitter buffer Initial buffer time, re-buffers Hp cunt IGMP Jin/leave times Jin/leave gap Jin/leave verlap Query cunt HTTP Middleware MOS, bandwidth Start time Picture lss Frame lss, rate First picture time Freeze/skip frame events Channel availability Channel start time Channel change time Channel jin time Channel change failure rate DRM respnse time Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

5 Tp 3 Issues Cntent availability Availability f channel Issues: cntent prvider, multicast cre, vide surce, access netwrk, hme netwrk Cntent quality Quality f audi & vide Issues: multicast cre, vide surce, access netwrk, hme netwrk Channel change time User wait time while changing channels Issues: IGMP perfrmance, middleware, multicast cre, UDP perfrmance Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

6 Infrastructure Quality ITU-T Vide-ver-IP applicatins have unique, uservisible impairments Caused by vide-ver-ip distributin and Natinal Head-end underlying IP netwrk architecture Key perfrmance indicatrs (KPIs) that impact IP vide service quality include jitter, latency, and frame lss Natinal Cntent Reginal Head-end Infrastructure Verificatin Evaluate quality and perfrmance f multicast distributin layer Lcal Cntent Lcal Head-end Lcal Head-end Mnitr and reprt results n multicast IP vide distributin fr IGMP (jin/leave) times fr channel change respnse times Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

7 Multicast Verificatin ITU-T Natinal Headends Cntent Servers Cntent Servers Reginal Headends Lcal Office Cntent Receivers Natinal/reginal verifiers distribute high- & standard-def channels Lcal verifiers jin/leave channels High-availability deplyment ht-standby verifiers KPIs VQI, MOS, per channel change time Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

8 Cntent Quality ITU-T Vide cntent quality picture quality is imperative Brix Vide Quality Index: Objective vide quality scre (1-5 scale) similar t MOS fr vice Vide reference mnitring Synthetic transactins f true vide traffic User cntrl ver traffic pattern Well suited fr trubleshting,rt cause analysis, and baselining Live vide sessin analysis VD services Bradcast TV Ideal fr behaviral analysis and vide quality issues Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

9 Quality f experience Testing channel change respnse time Test and mnitr IGMP (jin/leave) latency, vide start delay, and access t first I-frame Test simulate channels by emulating set-tp bx fr zap and VD functin delays Live channel mnitring - jin test channel Mnitr channel change perfrmance Mnitr custmer traffic Capture custmer s experience Prvide usage statistics Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

10 Service Assurance Architecture User Visualize Analyze Aggregate Measure Premises Edge Cre Aggregate Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

11 IPTV Service Assurance Cntent Encder Acquisitin Server VOD Server Distributin Server Subscriptin Server TV Channels Cre Transprt Access Trasnprt IP Multicast Cre Netwrk Bradband 3G Mbile Infrstructure Testing (Cre t Edge) User Live Element Channel Integratin Mnitring (Last mile & STB) Cnsumer Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

12 Standards ITU-T Packet metrics IETF IPPM Accuracy and definitin f metrics Types f packet lss, effects f jitter, rund-trip & ne-way latency Prtcls RTCP-XR: RFC3611, reprting f packet/frame-based statistics & vide cntent metrics by endpints Vide quality algrithms Active full-reference: J.144 Passive n-reference: nging wrk in VQEG & ITU-T Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May

13 Internatinal Telecmmunicatin Unin Internatinal Multimedia Telecmmunicatins Cnsrtium Brix Netwrks 285 Mill Rad Chelmsfrd, MA Jint ITU-T Wrkshp and IMTC Frum 2006 H.323, SIP: is H.325 next? San Dieg, 9-11 May 2006