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PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: 09-10-01 Sheet: 1 Version: EuroDocsis Introduction A short course about the introduction.

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Presentation on theme: "PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: 09-10-01 Sheet: 1 Version: EuroDocsis Introduction A short course about the introduction."— Presentation transcript:

1 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 1 Version: EuroDocsis Introduction A short course about the introduction of EuroDocsis 1.1

2 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 2 Version: Why this course? •EuroDocsis 1.1 is new •A lot of previous systems exist in Casema e.g. Demos, DVB, COM21 •A lot of related subjects such as TPA, SI, SP, different OS IHN, EMC, LVD AAA, QoS but what does it mean? (even if you know them all, this presentation may be interesting for you)

3 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 3 Version: Agenda for today •EuroDocsis introduction –planning, –some features, –COM21, DVB, Docsis, EuroDocsis comparison •System Issues –NGP, implementation of other market areas, –system calculations (capacity, line price), –linking to the PC •Implementation issues –Suppliers comparison, –Self installation and provisioning

4 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 4 Version: Our goals •Roll out without major surprises. •Broad knowledge about EuroDocsis 1.1 (not only technical possibilities and blockings, also the market related ones must be known) •Low line price (what the hell is line price!) (everybody knows its importance, nobody uses it, somebody calculated it, anybody does it his way) •Get a modem system that is cheaper and more flexible than COM21's system today

5 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 5 Version: rule RFQ phase Trial and test phase Businessphase good questions understanding - the subject - the supplier right choice change cost some days what must be test what are the criteria understanding - the need for the test - the test results - the consequences right choice change cost a few man-weeks reliability, availability serviceability upgradeability installability understanding changing cost a lot more

6 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 6 Version: Issues that are (partly) not covered •Regulatory issues If it is mandatory, only the board can and must decide since the president (and his MT) is mostly personally responsible. Examples: –LTLegal Tapping, government must be able to tap –EMCRadiation & interfering other systems like air traffic –LDVLow-Voltage Directive, Safety due to mains voltage –IHNConfigurations and responsibility (only TPA aspects) basis for seminar is: Cable operator is not responsible for IHN AOP + NTU + modem together, no usage of existing IHN for interactive traffic, Ethernet from modem to the PC SI = Self installation

7 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 7 Version: Development of Euro-DOCSIS in Time Cursus voor niet-technici 3 mei 2002

8 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 8 Version: CableLabs •In 1988, CableLabs was founded in the USA •CableLabs serves the cable television industry by: •researching and identifying new broadband technologies; •authoring specifications, certifying products and spreading information. •CableLabs benefits the cable television industry and consumers by: •enabling interoperability among different cable systems; •facilitating retail availability of cable modems and advanced services; and helping cable operators deploy innovative broadband technologies

9 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 9 Version: DOCSIS summary Website:

10 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 10 Version: DOCSIS summary Version Spec PICS/ATP 1st Certif.CMsCMTSs Market 1.0'97'98' Roll out 1.1'9900Q301Q3226 Roll out CCCM'0001Q202Q300Waiting 2.001Q4t.b.d.t.b.d.00Waiting CCCM CCCM = CPE controlled CM, t.b.d.= to be defined

11 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 11 Version: History of Euro-DOCSIS •In October 1999, TOCOF was founded and selected Ghent University to establish and conduct Euro-DOCSIS interoperability and certification program •In February 2000, Euro-DOCSIS annex N is approved •In May 2000, tComLabs at Ghent and Euro-DOCSIS Certification Board (ECB) were founded •In June 2000, first certification wave for Euro-DOCSIS 1.0 products by tComLabs

12 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 12 Version: EuroDOCSIS summary Website:

13 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 13 Version: EuroDOCSIS summary VersionSpec PICS/ATP1st Certif.CMsCMTSsMarket 1.000Q100Q200Q32816Roll out 1.101Q301Q301Q400Delayed 2.0?????????00Waiting ED1.0 ED1.1 RFQ NGP Selection ED1.0 ED1.1 roll out TPA

14 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 14 Version: Euro-Docsis Technische inleiding

15 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 15 Version: DOCSIS •Data •Over •Cable •Services •Interface •Specifications

16 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 16 Version: DOCSIS •Amerikaanse standaard •Gestandaardiseerde apparatuur •CM ( kabelmodem) en CMTS (netwerkapparatuur) mogen van een verschillende fabrikant zijn

17 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 17 Version: EuroDOCSIS •Europese versie van DOCSIS •Aanpassingen aan Europese kabelnetten –Kanaalbandbreedte –Upstream frequency range –Downstream frequency range

18 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 18 Version: Reference Model Compleet Cable modem Termination system Network Termination Mod Dem TX RX O/E Node Cable modem CPE O/E Node O/E Node Operations Support System Backbone Transport Adapter Cable Modem RF Interface Cable Modem CPE Interface CMTS RF interface CMTS-NSI NSI = Network-Side interface SNMPV3

19 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 19 Version: Operations Support System •DHCP(Dynamic Host Configuration Protocol) server •Time of Day Server •TFTP(Trivial File Transfer Protocol) server

20 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 20 Version: DHCP •De DHCP server zorgt voor: –Het IP adres van het Modem –Het IP adres van de Time of day server –Het IP adres van de TFTP server –Naam van de Config file –DCHP lease: tijd dat IP adres aan het modem is toegekend

21 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 21 Version: Time of day Server •Zorgt voor: –de tijdsindicatie –samen met offset wordt dat de juiste lokale tijd

22 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 22 Version: TFTP •De TFTP server zorgt voor: –Config file •Netwerk toegang configuratie setting •Class of Service configuratie setting •Quality of Service configuratie setting •Baseline Privacy configuratie setting

23 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 23 Version: TPA •Toegang via derde partijen –Modem maakt verbinding met Casema –CPE (PC) maakt verbinding met ISP • Twee afzonderlijke procedures –CPE(PC) heeft IP adres –Modem heeft IP adres

24 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 24 Version: Baseline Privacy •Bied een zeker niveau van versleuteling •Authenticiteit van CM en CTMS –Docsis 1.0 BPI Niet voor CM –Docsis 1.1 BPI Voor CM via digitale handtekening •Zorgt dat CM alleen toegang heeft tot diensten waarvoor het is geautoriseerd –Docsis 1.0 via MAC adres

25 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 25 Version: Baseline Privacy •Zorgt dat CM alleen toegang heeft tot diensten waarvoor het is geautoriseerd –Docsis 1.0 via MAC adres –Docsis 1.1 via MAC adres en Digitale handtekening.

26 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 26 Version: Downstream CMTS CM CMTS- Cable Modem Termination System CM-Cable Modem

27 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 27 Version: Downstream •Frequency gebied: MHz •Bandbreedte: 8MHz/ eff 7,96 MHz •QAM 64 (QAM 256) •MPEG-2 datastream •Bruto Bitsnelheid: 42 Mbit/s tot 56 Mbit/s

28 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 28 Version: Upstream CMTS CM CMTS- Cable Modem Termination System Instraling CPE IHN

29 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 29 Version: Upstream •Freqency range: 5 MHz-65 MHz •Bandbreedte : 0.2 ;0.4 ;0.8 ;1.6 of 3.2 Mhz •QPSK of 16 QAM •Bitsnelheid: 0,128 …10,24 Mb/s

30 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 30 Version: Wat is maximaal mogelijk ? Bit/Hz 256QAM 128QAM Shannon limit Maximale Signaal/ruis CATV netwerk 64QAM 32 dB CNR [dB]

31 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 31 Version: CNR zichtbaar gemaakt Grote CNR Kleine CNR

32 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 32 Version: (Euro)Docsis to DVB/COM21 issues A short course about the differences between DVB COM21 and (Euro-)DOCSIS

33 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 33 Version: DVB, COM21, (Euro)Docsis DVB From 1995 A/V + IP (+ tel.) Origin: Europe EBU Multimedia standard IP development failed due to weak CNP support COM21 From 1996 IP only (+ tel.) Origin: USA COM21 IP oriented proprietary One vendor only due to that, too expensive EuroDocsis From 2000 IP + tel. only Origin: Europe tComLabs IP oriented standard Video streaming development due to lack of CNP pushing Docsis From 1997 IP + tel. only Origin: USA CableLabs IP oriented standard Video streaming development due to lack of broadcast vision EBU

34 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 34 Version: DVB versus Docsis DVB + +CM easily to link with STB + +Real multimedia vision, DVB for all + +IPCableCom, later adopted for time- critical services. + +Developed for world market from European vision. Can be used in either 8 (PAL,SECAM) or 6 MHz (NTSC) systems US channels per DS + +OOB and IB possible + +QoS from the beginning. Important in EuropeDOCSIS - -STB link originally not foreseen. - -No multimedia vision, DVB + ED mix + + IPCableCom, later adopted for time- critical services. - -Developed in USA, for USA. DOCSIS is not suitable for other regions, it declares the EuroDOCSIS version to 8 channels per DS (vendor dep.) - -Only IB possible. - -QoS was not in DOCSIS1.0 CoS only. In USA less interest. OOB = Out of Band, separate control downstream based on QPSK 2 Mb/s IB = In Band, control signals in main downstream band multimedia = satellite, cable, terrestrial The many pro's for DVB shows the technical superiority for the European market but the market decided differently. DVB and EuroDocsis will be used simultanuously

35 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 35 Version: COM21 versus Euro(Docsis) COM Proprietary, monopoly position + +Mature proven technology - - Downstream 6 MHz, NTSC oriented, 27 Mb/s in 8 MHz - - Upstream 1,7 MHz QPSK only - - Bridged CMTS based VLAN tagging - - Tel: very expensive propriatary + + Internet: QoS and billing, - - PPPoE like virtual IP encapsulation (proprietary) - - Too transparent for ISP (CNP problem) - - iTV: no iTV but video streaming Europe (EuroDOCSIS) + +Interoperable between many vendors - - Step into the dark but it will work finally + + Downstream 8 MHz, PAL oriented, 38 Mb/s in 8 MHz - - Upstream 1,7 MHz QPSK only + +Routed CMTS (can be used as bridged) + + Tel: ETSI-POTS, ISDN, VoIP + + Internet: QoS and billing (if ED1.1_ + + MPLS, VPN but Cisco dominated up to now - - Better TPA, standard + + iTV: over Ethernet/ EuroDOCSIS There are good reasons to step from COM21 to EuroDocsis 1.1

36 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 36 Version: USA DOCSIS (ETSI ES ) - -ITU region 2 oriented ("New World plan") US MHz DS MHz, NTSC oriented grid - -FCC commitment for EMC, safety - -USA LV safety based on 110 V - -Commitment to US local standards e.g. low reflection requirements - -Under US supervision for e.g. interoperability via CableLabs. Cannot be influenced by Eur. CNP's. - -US Cablecom solutions for telephony - - Network: tree & branch, aboveground EuroDOCSIS (ES Anx.N) + +ITU region 1 oriented ("Old World plan") US MHz DS 87, MHz, PAL oriented grid + +European Directive for EMC (EMCD) + +European Directive for safety (LVD) + +Commitment to Cenelec EN with higher reflection requirements + +Under European supervision for e.g. interoperability via tComLabs. Influenced by Eur. CNP's (e.g. ISDN) + +Eur. Cablecom solutions for telephony + + Networks: (mini-) star based, buried EuroDocsis versus Docsis part 1 Docsis shows a year in advance what we can expect from EuroDocsis

37 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 37 Version: EuroDocsis versus Docsis part 2 USA DOCSIS + + Node size now later due to interactivity - - Drop lines to IHN + + Home-RF is defacto standard, very USB oriented - -DS 6 MHz NTSC based, gives 25% lower efficiency in 8 MHz (27 Mb/s) + + Network is renovated for 256QAM? - - US 3,5 MHz with 16QAM is used with fall-back mode 2,56…10 Mb/s - - Tel: US-POTS, VoIP - - Internet: plain internet for the time being, no iTV but video streamingEuroDOCSIS - - Node size now later 250 by interactivity + + AOP-NTU connection to IHN - - No common IHN solution, Ethernet recommended, is the only cheap solution + +DS is 8 MHz PAL based. Full 38 Mb/s. European DVB fits in EuroDOCSIS. - - Network not good enough for 256QAM - - US 1,7 MHz only possible with QPSK, 2,56 may be 5,12 Mb/s in 3,5 MHz + + Tel: ETSI-POTS, ISDN, VoIP + + Internet: QoS and billing, MPLS, VPN, iTV over Ethernet/ EuroDOCSIS Environmental market conditions are completely different

38 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 38 Version: EuroDocsis 1.0; 1.1; 2.0 EuroDOCSIS Telephony is not possible - - CoS only - - TPA cannot be implemented EuroDOCSIS Telephony VoIP under development + +Service enhancement QoS, payload header suppression + +IP multicast enhancement and encryption (cond. access) Better operations, SNMP v3, Account mgnt. Fault mgnt. + +TPA is possible under certain conditions EuroDOCSIS Advanced PHY: S-CDMA (ECI like) and Advanced TDMA new hype of US vendors or is the market waiting for it? - - Starting development, not be certified before 2004?

39 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 39 Version: Euro-DOCSIS and Telephony Cursus voor niet-technici 3 Mei 2002

40 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 40 Version: VoIP / IP Telephony / Internet Telephony •Gedachten van VoIP varieren van persoon tot persoon •3 verschillende voorbeelden VoIP / IP Telephony: - Voice-over-Internet meestal ‘PC-to-PC’ of ‘PC-to-Phone’ - Corporate VoIP bedrijfstelefonie, o.a. PBX - Carrier-grade VoIP gebruikelijke analoge telefoon De verschillen worden bepaald door type IP netwerk, toegepaste protocollen, apparatuur, e.d.

41 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 41 Version: Architectuur PacketCable / IPCablecom Platform PHY, Broadband Modem Physical layer (modulation) MAC, Media Access Control (addressing) EuroDOCSIS 1.1 Platform Internet Protocol PacketCable / IPCablecom Protocols IP-based data services Voice/Video Conferencing iTV services VoIP is gebaseerd op een open architectuur

42 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 42 Version: Geschiedenis van Carrier-Grade VoIP over Cable •In 1998 begon CableLabs met PacketCable (Pkt) •Begin 2001 begon ECCA met IPCablecom project •In maart 2001 begonnen ETSI en ITU-T met technische specificaties voor IPCableCom •Omvattende aanpassingen in ETSI IPCablecom standaarden zorgen voor vertragingen in het proces •GEVOLG:Onzekerheid over certificatie en onduidelijkheid over definitieve eisen

43 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 43 Version: New Generation Platform (NGP) •Casema project NGP doelstelling is selectie van: ‘Euro-DOCSIS IPCableCom’ apparatuur •Fasering van NGP –Fase 1: Internet services (vervanging Com21) –Fase 2: Third-Party access voor andere ISPs –Fase 3: Self Provisioning & Self Installation –Fase 4: Telefonie

44 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 44 Version: Voice-over-NGP I •2 architecturen gedefinieerd in IPCableCom: –Fully VoIP (softswitch-gebaseerd) –Switched VoIP (gebruikmakend van PSTN switch) Casema heeft voor de ‘switched VoIP’ architectuur gekozen!

45 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 45 Version: Voice-over-NGP II Switched VoIP architectuur Customer premisesThird party HFC Network AOP + NTU VGW Casema switch EuroDOCSIS Telephony signals Legend EuroDOCSIS 1.1 SS7 V5.2 HFC NetworkCore network IPCablecom (switched VoIP) POTS (ISDN optional) MTA CM MTA* * The MTA can be external or embedded in the CM CMTS Router Transmission & Routers TSP 3rd party switch 3rd party switch TDM-traffic

46 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 46 Version: Voice-over-NGP III Fully VoIP architectuur IPCablecom Euro-DOCSIS 1.1 Customer premises Casema and/or Third party HFC network AOP + NTU CMTS KPN EuroDOCSIS Telephony media flow Legend ANS ANC ANP TSP SS7 PCM+MF sign. HFC NetworkCore network CMS MGC Casema switch MGW SGW SIP CMS NCS a1 a2 MTA CM MTA* POTS (ISDN optional) Router Telephony signalling

47 Het iTV platform in NGP 3 mei 2002

48 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 48 Version: Behandeld zal worden 1. Mogelijkheden van het gebruik van het iTV platform in relatie tot NGP 2. Aandachtspunten c.q. mogelijk te verwachten problemen

49 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 49 Version: Algemeen Twee scenario's voor transport interactieve data: •Via telefoonlijn dmv POTS modem in de STB: –Via KPN –Via MTA in het kabelmodem •Via kabel, down- and upstream via het HFC netwerk. Twee verschillende stromen: •A/V broadcast = het oversturen van het digitale video, audio en extra programma informatie, uitgezonden in een DVB-downstream kanaal. •Interactieve data = persoonlijke en signaleringsdata, verzonden in EuroDOCSIS 1.1 downstream en upstream kanalen of via de telefoonlijn.

50 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 50 Version: Huidige situatie: telefoon retour via KPN Applicatie server Applicatie server KPN switch KPN switch Modem pool Modem pool Conventionele A/V broadcast via DVB KPN Telefoon lijn SDH netwerk TV R HFC netwerk Interactieve data

51 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 51 Version: Gewenste oplossing met EuroDocsis kabel modem Applicatie server Applicatie server IN DATA R/TV R TV ED-CM Ethernet kaart Ethernet kaart SDH netwerk HFC netwerk CMTS Conventionele A/V broadcast via DVB Interactieve data via ED 1.1 Meterkast

52 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 52 Version: Tweede optie: telefoon retour via MTA Applicatie server Applicatie server IN DATA R/TV R TV ED-CM Tel. modem Tel. modem MTA Modem pool Modem pool Casema switch/GW Casema switch/GW SDH netwerk HFC netwerk CMTS Conventionele A/V broadcast via DVB Interactieve data Meterkast Huidige telefoon modem

53 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 53 Version: Gelijktijdig gebruik van het kabelmodem Persoonlijke data DVB ED-CM Ethernet kaart Ethernet kaart Applicatie Service Provider Internet Service Provider Casema netwerk IN DATA R/TV R TV Downstream A/V broadcast + interactiviteit Upstream ED 1.1

54 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 54 Version: Tijdskritische diensten in iTV On-line betalingen: ED-CM Ethernet kaart Ethernet kaart Applicatie Service Provider Casema netwerk IN DATA R/TV R TV Shopping mall via DVB broadcast Ik ga wat bestellen Interactieve data via ED 1.1 te laat = geen afrekening

55 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 55 Version: Tijdskritische diensten in iTV _2 T-commerce: WWW Additional info ED-CM Ethernet card Ethernet card Casema network IN DATA R/TV R TV Application server Application server reclame via DVB broadcast Die beer wil ik wel Interactieve data via ED 1.1

56 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 56 Version: Samengevat •iTV mogelijk in het ED NGP –via het Internetplatform –via het Telefonie platform •Een aantal zaken zullen goed uitgezocht moeten worden –gelijktijdig gebruik PC en STB met de data communicatie tussen verschillende SP’s –het correct laten verlopen van tijdskritische diensten

57 Verschillen DVB en ED in relatie tot iTV Mei, 2002

58 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 58 Version: Algemeen •De DVB standaard is ontwikkeld voor digitale audio en video broadcast waaraan later een module is toegevoegd waarin interactiviteit geregeld wordt. Deze standaard is hierdoor uitermate bruikbaar voor de STB. •DOCSIS is ontwikkeld voor de internet omgeving maar wordt inmiddels ook gebruikt in de STB.

59 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 59 Version: Verschillen in de downstream EuroDocsis: •Modulatietechniek identiek aan DVB •MPEG transport alleen mogelijk via IP over ED. Aangezien dit zorgt voor timingproblemen is dit voor MPEG transport geen optie. DVB: •Twee methoden in de downstream: Out-Of-Band (OOB) and In-band (IB): –OOB: QPSK modulatie met een bandbreedte van 2 MHz met 3 Mb/s, is robuust en kan overal in de frequentieband worden geplaatst. –IB: 64 QAM modulatie met 8MHz bandbreedte op 38 Mb/s. Deze bandbreedte kan MPEG, IP, MP3, etc informatie bevatten. M.b.v MPEG part 6, kan IP ingekapseld in MPEG verzonden worden.

60 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 60 Version: Verschillen in de upstream EuroDocsis: •De US modulatie kan QPSK zijn en 16 QAM. De standaard laat data snelheden toe* van 128 kb/s tot 10 Mb/s in zeven stappen. DVB: •US modulatie is QPSK. Mogelijke data snelheden zijn 256 kb/s tot 6 Mb/s in stappen van vier. Voor beide standaarden geldt dat de toegang naar de gedeelde US bandbreedte wordt geregeld via de MAC protocollen. De controllers in het HE regelen de toewijzing van de US bandbreedte, de manier waarop dit gebeurd is verschillend. * “De standaard laat toe” betekend niet dat dit ook mogelijk is in het kabelnetwerk. Op dit moment, de maximum bitrate per kanaal in ons kabelnetwerk is 3 Mb/s.

61 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 61 Version: Belangrijkste punten •DVB: –Multimedia oplossing, bruikbaar in kabel, satelliet en terrestrial netwerken en voor audio/ video, internet en telefonie diensten. –Voor broadcast van audio en video in de downstream is DVB via Europese regelgeving verplicht gesteld. •EuroDocsis: –Alleen te gebruiken in kabelnetwerk en voor de internet en telefonie diensten. iTV kan meeliften op deze diensten alleen op basis van TCP/IP –Voor iTV zijn er altijd twee modems nodig: een DVB en ED modem. Hierdoor is EuroDocsis vanuit technisch oogpunt duurder dan DVB Conclusie: Beoogde ED voordeel vanwege meer beschikbare bandbreedte (vergeleken met DVB- OOB (38Mb/s tov 3 Mb/s)). Valt weg met de DVB-IB oplossing die dezelfde bandbreedte en snelheid beschikbaar stelt en tevens de mogelijkheid voor het gebruik van een multiple carrier zorgt zelfs voor duidelijke voordelen.

62 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 62 Version: EuroDocsis System calculations Short calculations you must know for EuroDocsis 1.1: speed, capacity, CMs/CMTS, line price

63 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 63 Version: Speed general •Speed can be split up in downstream speed (DS) and upstream speed (US) •In US as well as in DS each one channel at a time (if capacity is too low, 2 nd channel cannot be added) •If n is number of allowed US channels per DS channel then the asymmetry is given by DS : (n x US) e.g.: DS = 38 Mb/s, US = 2,5 Mb/s n = 4 the asymmetry is 38 : (4 x 2,5) = 3,8 (or 3,8 : 1) CMTS TX + RX CM RX+TX CMTS TX + RX CM RX+TX CM RX+TX CM RX+TX OR ANDTX RX1 TX = Transmitter, RX = Receiver

64 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 64 Version: Speed - bandwidth Choice of speed/bandwidth ratios: •DS: •DS: 64QAM, (128QAM) and 256QAM PAL oriented network accepts 64QAM only -network CNR is too low for 256QAM -CNR increase is very expensive •US: •US: QPSK and 16QAM 16QAM in speed, two times as efficient as QPSK but: - network less reliable for 16QAM - number of CM's/CMTS reduced by 50% CMTS TX + RX CM RX+TX 128QAM is a little less efficient technique that is not supported by most of the CM and CMTS suppliers 64QAM 128QAM 256QAM 33% QPSK 16QAM 100% but.. +12% +33%

65 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 65 Version: Speed downstream 48 Mb/s •64QAM gives 6 b/s/Hz (ref. 64 = 2 6 ) so in theory: 8 MHz channel gives 8 x 6 = 48 Mb/s 38 Mb/s •Due to filtering, FEC etc.result: 38 Mb/s effective bitrate lower (between %), before IP handling service independent 37 Mb/s •UDP/IP consumes approx. 1% (streaming, telephony)result: 37 Mb/s 34 Mb/s •TCP/IP consumes another 10% (webserving, )result: 34 Mb/s CMTS TX CM RX FEC = Forward Error Correction 34 Mb/s 4 37 Mb/s 1 10 TCP UDP

66 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 66 Version: Speed upstream 3,4 Mb/s •QPSK gives 2 b/s/Hz (ref. 4 = 2 2 ) so in theory: 1,7 MHz channel gives 1,7x2 = 3,4 Mb/s 2,56 Mb/s •Due to filtering, FEC etc. result: 2,56 Mb/s effective bitrate is lower (approx. 35%), before IP handling service independent 2,5 Mb/s •UDP/IP consumes approx. 5% (due to asymmetry) (streaming, telephony)result: 2,5 Mb/s 1,5 Mb/s •TCP/IP consumes another 40% (due to asymmetry) (web serving, )result: 1,5 Mb/s CMTS RX CM TX 1,5 Mb/s 1,06 Mb/s 2,5 Mb/s 0,06 0,84 TCP UDP

67 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 67 Version: modems per CMTS on service level users •Let say QoS = DS 256kb/s /US 64kb/s TCP DS: 1 TX= 34 Mb/s34: 0,256 =136users US: 4 RX= 4x1,5 Mb/s6: 0,064 =100users For Web surfing for a concurrency of 1%, users could be connected to one CMTS 1 TX - RX combination 1600 users •For video conferencing DS = US = 64 kb/s UDP DS: 1 TX= 37 Mb/s37: 0,064 =600users US: 4 RX= 4x2,5 Mb/s10: 0,064 =160users For video conferencing for a concurrency of 10%*, only 1600 users could be connected to one CMTS 1 TX - RX combination * video conferencing is peer-to-peer, can use upstream and downstream as well once started, video conferencing is occupying the channel continuously

68 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 68 Version: modems per CMTS on network level In US a modem produces a signal + spurious (Spurious is unwanted disturbing signal residue) 1Supplier guarantees for a CM a minimum signal-spurious ratio (SSR) (in the standard: -72 dBc per modem) 2QPSK needs at least 22 dB SSR to operate reliantly 3Network path loss asymmetry reduces with 15 dB* 4Maximum modems/CMTS receiver is: = 35 dB is approximately 200 CMs/RX (see curve) Asymmetry reduction helps: = 41 dB is approx. 500 CMs/RX 5Each doubling of modems reduces SSR with 4,5 dB So, for e.g. 256 modems (is 2 8 ) reduction is 8 x 4,5 = 36 dB * 15 dB is a typical Casema network value. With new (switchable) multi-taps it could be less [dB] modem quant.

69 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 69 Version: Summary CMTS RX4 RX3 RX2 RX1 TX HFC network CMn CM1 CMn CM1 RX1 PHY: 200 max ADDR: e.g. 800 Serv: between 1600 and Conclusion (this example): PHY is the restricting factor for the time being max. 4 x 200 = 800 modems Many parameters can be changed but the maximum of 200/RX card is difficult to exceed RX3 PHY: 200 max ADDR: e.g. 800 Serv: between 1600 and

70 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 70 Version: Line price EuroDOCSIS only (example, simplified) only the costs of new ED equipment is incorporated Calculation (example) as used for the comparison between ED-vendors Modems are needed for each subscriber Line cards (in the CMTS) can be divided by 800 (4 US/card x 200 CMs/US) Central costs for all connections can be divided by 9 (9 line cards can be inserted in one CMTS)

71 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 71 Version: only the costs of new equipment and modifications are incorporated Case for e.g. Utrecht. For The Hague some investments are carried out already. Line price for business plan (example, simplified)

72 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 72 Version: Conclusions •Line-price increase not for internet only. If telephony and interactive TV can use the same platform, the line-price increase of EUR 487 is an investment for all these services. •Why so much? –CATV was designed for connecting one R/TV only –Network quality increase was always used for capacity increase –Lot of investments were postponed until now (SNP) •But there is a moment that limits are reached

73 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 73 Version: EuroDocsis and TPA Third Party Access The consequences and some special issues (SI and SP)

74 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 74 Version: Is TPA for internet only? •On the IP platform, TPA is a hot issue at the moment but: •It was already an issue years a go for telephony as well (2 nd operators) •It was already an issue years ago on pay-TV (Channel+). This will become more important with introduction of interactive TV •Today we study TPA for the IP platform since the government presses us to open our network for other SP's (third parties). CM STB Tel All over one modem, or modem/ SP Who delivers the modem? Who owns the modem? Who cares…? SP is generic name for Service Provider ISP is specific Provider for Internet-Services

75 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 75 Version: Casema only? •Casema is studying TPA for internal knowledge improvement •Casema is working together with Essent and UPC to get common sense and to get one standpoint in the direction of the government. •Projectname: ShAP (Shared Access Project) splitted in WG technology and WG business. Casema will commit to the result of ShAP study. •TPA for EuroDocsis only because of step-to-ED policy and uniform SLA for all ISP's Internal TPA group: Fred v. Let, Maria Klessens ShAP: Fred van Let, Hans Velders,...

76 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 76 Version: TPA dualism •Cable Network Provider (CNP) is leading, tries to set the Standard for the SLA once and for all. •Internet Service Provider (ISP) must feel happy with such SLA •Government (OPTA) must accept construction Technical group sets conditions •Physical parameters (NTU) •IP platform parameters (MPLS) •NMS, AAA, SI, SP •Eliminate all impossible models NMS = Network Management SystemSP = Self Provisioning AAA = Authentication, Authorization, AccountingSI = Self Installation Business group sets conditions •Sets up Business plans •Select business model that can work with Techn. group conditions •Makes SLA between CNP and ISP

77 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 77 Version: Begin (subscr. initiative) ISP diagnoses problem Subscriber with problem calls ISP ISP opens ISP trouble ticket Is subscriber satisfied ? NO ISP closes both ISP and CNP tickets End ISP calls subscriber to verify resolution ISP corrects the problem is it CNP's fault? YES is ticket open for this problem ? YES NO ISP attempts to verify correct operation ISP opens ticket with CNP Problem found? YES CNP corrects problem & marks ticket resolved ISP calls subscriber to verify resolution NO YES ISP's activity CNP's activity Users' activity NO Trouble ticketing (example: ISP responsible) is it subscriber's fault? NO ISP helps to solve problem YES Goals: •less red •more green Subscriber solves problem Begin (ISP initiative) ISP finds problem

78 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 78 Version: End Self provisioning (example) Begin Subscriber buys CNP certified CM Is subscriber satisfied ? NO ISP closes initiation ticket ISP sends RFSC + INITICK to CNP ISP stores all subscr.information ISP opens subscr. account CNP stores all subscr.information ISP opens initiation ticket YES ISP's activity CNP's activity Users' activity Others Does everything work? NO YES Goals: •less red •more green •more blue Subscriber sends RFSC to ISP Subscr. gets ISP connectivity set Subscr. conducts CM's self installation RFSC = Request for Subscription and Class of Service UCAP = Username, CoS Acknowledge and Password CNP opens subscr. account CNP send Ack back to ISP ISP sends UCAP to subscriber ISP handles trouble ticket Subscriber solves problem via retail CNP sets up interconn. & CoS Is everything OK? NO YES CNP handles trouble ticket is predefined procedure

79 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 79 Version: Self Installation OK too low too h Amplifiers, splitters and long cable not possible. Passive NTU seldom possible Active NTU with adjustment good in all cases.

80 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 80 Version: Existing market developments (becoming more important with TPA introduction) increasing number of versions •PC with Windows: increasing number of versions W95, W98, ME, SE, 2000, XP… (mainly NL also UK versions) PCMCIA •Desktop with PCI slots but also laptops with PCMCIA (UPC was pressed to deliver PCMCIA Ethernet cards on request recently) Linux servers •Increasing number of Linux servers/firewalls at home (in particular in the heavy user area.) •Linux, Apple •Linux, Apple are still interesting market areas trends to location near the CATV system •Modem trends to location near the CATV system outlet due to need to connect TV, radio, PC and telephones in all rooms of the house.

81 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 81 Version: Summary •Third Party Access asks for a very good co-operation between CNP and ISP. •Self provisioning is seldom a problem but a good scenario must be chosen. •Self installation is a Capex problem. Is it possible to ask the retailer with (its connections to installers) to control correct installation and to keep the installation costs separated from our line price.

82 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 82 Version: Comparison of Euro-DOCSIS Vendors Cursus voor niet-technici 3 Mei 2002

83 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 83 Version: Short List RFQ NGP •In December 2001: Casema selected 3 vendors of NGP equipment (Euro-DOCSIS and IPCablecom devices) •Euro-DOCSIS testing (Okt/Nov 2001): Two vendors have been tested earlier in Casema’s lab Third vendor has been tested earlier in FTC’s lab •IPCablecom equipment (Feb 2002): All 3 vendors have been tested by Casema at vendors’ premises

84 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 84 Version: Vendor Comparison Price Vendor equipment had been compared on investments for a specific Casema case study (Den Haag, V’burg + Z’meer) •Vendor1: –Network price per subscriber for “Internet only”:1 unit •Vendor2: –Network price per subscriber for “Internet only”:1,3 units •Vendor3: –Network price per subscriber for “Internet only”:1 unit

85 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 85 Version: CMTS Comparison Physical 7ft / 19“ rack mounted •CMTS1: –12 slots for RF line cards and network side interfaces –1x4 RF line card with 1 downstream and 4 upstream –Total port capacity per rack:36 DS & 144 US* –Roadmap:2x8 and 3x12 RF line cards •CMTS2: –4 slots for RF line cards and 2 slots for network side interfaces –1x6 RF line card with 1 downstream and 6 upstream –Total port capacity per rack:16 DS & 96 US* –Roadmap:2x8 RF line cards (5x20 for bigger chassis) •CMTS3: –14 slots for RF line cards and network side interfaces –1x4 RF line card with 1 downstream and 4 upstream –Total port capacity per rack:42 DS & 168 US* –Roadmap:2x8 and 4x32 RF line cards * For comparison Com21: 3 DS & 21 US

86 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 86 Version: CMTS Comparison Data throughput •CMTS1: –Downstream, 8 MHz, 64QAM:max. 38 Mbps (measured) –Upstream, 1,6 MHz, QPSK:max. 1,3 Mbps (measured) –Forwarding capacity:30 Mpps (theoretical) •CMTS2: –Downstream, 8 MHz, 64QAM:max. 38 Mbps (measured) –Upstream, 1,6 MHz, QPSK:max. 1,7 Mbps (measured) –Forwarding capacity:2,4 Mpps (theoretical) •CMTS3: –Downstream, 8 MHz, 64QAM:(measured at FTC’s lab) –Upstream, 1,6 MHz, QPSK:(measured at FTC’s lab) –Forwarding capacity:42 Mpps (theoretical) Mbps = Mega bits per second Mpps = Mega packets per second

87 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 87 Version: CMTS Comparison: Network Side Interfaces •CMTS1: –Octal 10/100BaseT, GbEth, POS STM-1/4 •CMTS2: –Single 10/100BaseT, GbEth, POS STM-1/4, ATM OC-3 •CMTS3: –Octal 10/100BaseT, GbEth, POS STM-1/4 ATMadvantages- Low implementation costs - In-band transport of NM information disadvantage- Data capacity limited for future - Alternative cheaper Interfaces NM = Network ManagementPOS = Packet over Sonet (SDH)

88 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 88 Version: CMTS Comparison: Third Party Access Third Party Acess has lots of flavours For dynamic service and ISP selection per CPE: •CMTS1: –For now TPA only possible using a service selection gateway –Later MPLS VPN interface card enables more TPA features •CMTS2: –TPA possible by using MPLS VPN technology and advanced OSS. •CMTS3: –For now TPA only possible using a service selection gateway –Later MPLS VPN interface card enables more TPA features

89 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 89 Version: CMTS Comparison Legal Interception •CMTS1: –Legal Interception only possible using a Protocol Analyser card (with certain limitations: monitoring of only ONE RF line card per Protocol Analyser card!) •CMTS2: –Legal Interception possible by setting a tap within CMTS2 •CMTS3: –Legal Interception possible by setting a tap within CMTS3

90 PPT: C00-introduction.ppt Gen. week: 207 Author: A.Velders Printed: Sheet: 90 Version: Conclusion •Many factors (financial, service, technical, time-to-market) have an impact on the equipment selection •Comparison of equipment is not always straightforward because of many hidden pitfalls •Every vendor has strong and weak points depending on service (Internet, Telephony, …. )


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