Cable Modem 2004.10 sgkwon@empal.com
1.... 1 2. CABLE MODEM?... 2 2.1.... 2 2.2. /... 3 2.3.... 4 3.... 5 3.1.... 5 3.1.1. TV, 2009 4 3... 5 3.1.2. TV Broadband... 5 3.1.3. NGNA... 6 3.2.... 7 3.2.1. TV BcN... 7 3.2.2.... 7 3.2.3. 90% HFC... 8 3.2.4.... 9 3.3.... 10 3.3.1. HFC... 10 3.3.2.... 10 3.4.... 11 3.4.1. Internet... 11
3.4.2.... 13 3.5.... 14 3.5.1. VoIP... 14 3.5.2. TPS... 14 3.5.3. TV... 15 4.... 15 [ ]... 15
1. TV. SO 50. TV, SO (M&A) SO(MSO), 2000 HFC 1. TV 2003 (NGcN) HFC. ADSL, VDSL (xdsl) FTTH(Fiber to the Home), HFC. (ONU), ONU HFC xdsl,,,. 1 HFC (Hybrid Fiber Cable) TV TV. HFC (Fiber Node),. HFC 750MHz. 10Mbps TV. PC. ATM FTTH(Fiber To The Home). FTTH FTTH HFC. 1
70% 750 HFC. Cable Modem 2. Cable Modem? 2.1. 1) Cable Modem CATV Internet. Cable Modem CATV,. CATV,. CATV Cable Modem. Cable Modem ' '. ' ' TV ' ' ' '. ' ' Cable Modem. ADSL Cable Modem. Cable Modem,,. 2) Cable Modem HFC. 2
PP (SO) (TBA) (ONU) Cell #1 (Splitter) (Tap-off) CM Converter ISP PC TV Cell # N 1. Cable Modem 3) PP (Program Provider): NO (Network Operator): SO (System Operator): ISP (Internet Service Provider): Internet ONU (Optical Network Unit: ): (TBA: Trunk Bridge Amplifier): (Splitter): RF (Tap-off): CMTS (Cable Modem Termination System): Cable Modem Packet 4) (Hybrid Fiber Coaxial): SO Cell ONU (Star ), ONU (Tree & Branch ), (TBA) (Splitter, Tapoff ) Cell : Cell, Cell 2.2. / 1) 3
0 5 42 54 500 552 750Mhz Analog Internet Digital / 2. : 54 MHz ~ 750 MHz : 5MHz ~ 42MHz 2) (DOCSIS 2 ) 2.3. 1) 3..... HFC(Hybrid Fiber Coaxial).. Internet LAN. 2 DOCSIS (Data Over Cable Service Interface Specification) Cable R/D Cable Labs 1998 ITU Cable System Data MCNS (Multimedia Cable Network System) Cable Modem. DOCSIS DOCSIS 1.0 64k QAM/ 6MHz/ 27M~36Mbps, QPSK/ 0.2~3.2MHz/ 0.32~10Mbps, 1.1 QoS VoIP 1.2 27Mbps 2.0 30Mbps. 4
2). (Tree ). Cable 3. 3.1. 3.1.1. TV, 2009 4 3 (JupiterResearch) TV 2009 7 3 7 5,. 2004 2 6 2009 4 3 11% (CAGR, Compound Annual Growth Rate). TV TV (MSO, Multiple System Operators) (DVRs, Digital Video Recorders) (EPGs, Electronic Program Guides) TV. (MSOs) (DVRs). DVR 29% (EPGs). DVR 37%. 3.1.2. TV Broadband TV (TPS) (VoIP) Broadband. (FT),, TPS. 90 40% 5
., 10, 45, TV. TV (VoIP) VoIP. 50% VoIP 2006 95%. TV,.,. TV,Broadband. 1 Broadband 2008 2 8000 3 2500. 3.1.3. NGNA (NGNA) 1~3 SO(MSO), 100 (RFI) TV. MSO TV NGNA, 3 RFI, NGNA. NGNA MSO TV () ` '(All Digital). NGNA MSO 3 4000, NGNA TV. NGNA, NGNA SO TV. (SD) (HD) TV, ( ),, 6
NGNA. NGNA. 3.2. 3.2.1. TV BcN TV(SO) BcN. TV 8 BcN, TV BcN. SO MSO( SO) ` ', MSO BcN TV. TV TV BcN,. TV BcN,, CJ, HCN,,, MSO TV( ), ( ), ( ). SO 70,,, 27. (PP) 70, (DP) 4. 3.2.2. DTV. DTV 4 DTV.,. (TTA), LG 7
, (SO) 20 DTV. DTV TV TV. DTV, DTV. TV, DTV. TV.. TV,. DTV OOB(Out Of Band), DSG(DOCSIS Set top Gateway) OCAP(Open Cable Application Platform). 3.2.3. 90% HFC (HFC: Hybrid Fiber Coaxial Cable) 90%. TV 108 (SO) HFC, 8 1,698 (2003 12 ) 1542 HFC. 1,542 108 SO 11 SO. SO 66 1065 SO 21, 215. SO 6 586 8 1065 2.,,, (RO) SO 21 260 HFC. 8
SO 64% 860MHz,. SO 188 SO SO 96. 67 30. SO 35, 34, 7. 3.2.4. xdsl. TV(CATV) 3 10~ 20%. xdsl 30%. (DOCSIS)1.1 2.0. Dataquest 14% 2006 1 8 52. 4 70%, 30%,. xdsl., xdsl. TV, (VoD). (Dynamic) IP xdsl. (DSL). TV, (IP Telephony).., (VDSL). 9
Shenzhen Coship Electronics. 50%, xdsl 50% (throughput rate). 75%.,, (Ambit) (OEM). 3.3. 3.3.1. HFC (HFC),. TV ( ) ( ) (ETRI) TV,,, 2007 220 58 278. 1Gbps,,, 400Mbps ( Docsis2.0 40Mbps ) 2007. 3.3.2.., (DMB) DMB.,,.. 10
, DMB DMB. DMB (MUX ) PIXDMB-E100. KBS (SEVA). DMB MPEG4 AVC( ), BSAC( ). SBS KBS.. 3.4. 3.4.1. Internet 1) Internet ( : ) [ : / (2004.8 )] 2) Internet ( : ) xdsl Cable Modem 11
[ : FCC] 3) ( : ) [ : / (2004.8 )] 12
3.4.2.. ( ), SA( ). 2000. SO( TV ) ( ++ TV). 2000 SO. 1, MSO( ) VoIP.,. ( WCG 200), MSO ISP. TV SA( ).,,,,, VoIP. 13
3.5. 3.5.1. VoIP (VoIP, ) TV. 9,, `KCTA 2004' VoIP,. VoIP ` ', ( ),, (Security), TV. VoIP (PSTN) TV VoIP (VoIP over HFC) TV. 3.5.2. TPS TV, (VoIP) ` '(TPS: Triple Play Service) TV.,.,.,. (xdsl) TV,.. SO(MSO). 14
3.5.3. TV (MSO) (DMC) TV. 119 SO 70 SO TV 130 (VOD),. 2001 TV MSO DMC. 11 TV. 3 VOD, BSI DSG(DOCSIS Set-top box Gateway, ) TV. 9 TV. 6 MSO DMC 20%. 4. Cable Modem,,,, IP, T-commerce., QoS HFC, xdsl, FTTH. Cable Modem xdsl,, FTTH. (http://www.etimesi.com) Digital Times (http://www.dt.co.kr) [ ] 15
Internet : (khoh@kisdi.re.kr) : / (2003.12 ) HFC : HFC : 3 ( ) 16