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Introduction to DOCSIS

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Introduction to DOCSIS Introduction to D O C S IS 3 . 0 Speaker: Byju Pularikkal, Cisco Systems Inc. 1 1 A crony m s / A b b re v ia tions DOCSIS = Data-Ov e r -Cab l e Se r v i c e In te r f ac e MDD = M% C Do m ai n De s c r i p to r Sp e c i f i c ati o n CI* = Co n v e r # e d In te r c o n n e c t * e tw o r ) CMT S = Cab l e Mo d e m T e r m i n ati o n Sy s te m ( $ % M = ( d # e $ % M DS = Do w n s tr e am OSSI = Op e r ati o n s Su p p o r t Sy s te m In te r f ac e U S = U p s tr e am $ P S+ = $ u ad r atu r e P as e S i f t + e y i n # CM = Cab l e Mo d e m , * = , i b e r n o d e M-CMT S = Mo d u l ar CMT S - , C = - y b r i d , i b e r Co a. i al P C = P r i m ar y C an n e l DT I = DOCSIS T i m i n # In te r f ac e ! " = ! o n d i n # " r o u p D( P I = Do w n s tr e am ( . te r n al P - / In te r f ac e $ % M = $ u ad r atu r e % m p l i tu d e Mo d u l ati o n D0 , I = Do w n s tr e am 0 ad i o , r e 1 u e n c y In te r f ac e T & ' = T y p e & e n # t ' al u e I" MP = In te r n e t " r o u p Man a# e m e n t P r o to c o l ! P I = ! as e l i n e P r i v ac y In te r f ac e % SM = % n y So u r c e Mu l ti c as t S-CDM% = Sy n c r o n o u s Co d e Di v i s i o n Mu l ti p l e SSM = So u r c e Sp e c i f i c Mu l ti c as t % c c e s s MM- = Mu l ti l i n e ar Mo d u l ar - as M& D = Mu l ti c as t & i s te n e r Di s c o v e r y OCSP = On l i n e Ce r ti f i c ate Statu s P r o to c o l S% = Se c u r i ty % s s o c i ati o n C0 & = Ce r ti f i c ate 0 e v o c ati o n & i s t ( % ( = ( ar l y % u t e n ti c ati o n an d ( n c r y p ti o n * D = * e tw o r ) Di s c o v e r y MIC = Me s s a# e In te # r i ty C e c ) 2 2 A g e nda Motivation for DOCSIS 3.0 DOCSIS 2 .0 ove rvie w Mod u l ar CMT S ( M-CMT S) arc h ite c tu re DOCSIS 3.0 ove rvie w Downstream channel bonding U p stream channel bonding Mu lticast P hy sical lay er technologies S ecu rity O S S I IP v in Ca! l e 3 3 M otiv ation - W h y D CSIS ! ." # 4 4 D O C S IS 3 . 0 B us ine s s O b j e ctiv e s A llow more BW f or DO S I S ! " # $ % " & Ms ' imit( redu ce more node sp lits I ntrodu ce new ) S D ser* ice of + & to ! & & Mbp s A llow migration of e, isting cu stomers to higher tier and DO S I S - " & cap ability . o p ro* ide more robu st data encry p tion A ddress the need f or more I P address sp ace throu gh the su p p ort of I P * / 0 edu ction of the o* erall cost of M. S p orts Brea1 DS ( U S dep endence i" e" indep endent scalability of U S and DS 2 , p ected to redu ced the cost of downstream p ort by more than ! ( ! & 5 5 DOCSIS 2.0 Ov e r v i e w 6 6 D O C S IS 2 . 0 R a te s Downstream rates / M) 3 channels in the U nited S tates4 5 M) 3 in 2 u rop e4 / 6 7 A M or % + / 7 A M modu lation I n the range of % / Mbp s ( - 5 Mbp s 8 U nited S tates9 4 higher f or 2 u rop e" U p stream rates % & & : h3 ;/ Mh3 hannel W idth4 7 P S : to / 6 7 A M I n the range - % & 1 bp s to - & Mbp s" P er f low sp eed is limited by the re< u est;grant latency " . hat ty p ically limits the U S rates to ! ;- mbp s 8 thou gh it can be f aster with sp ecial conf igu rations9 . y p ically 4 ou t of ! - ! channels on the DS 4 only one is u sed f or DO S I S 4 the rest are u sed f or * ideo 8 digital or analogu e9 7 7 e e ds T h e d i" tri! u tion ne tw or# i" o$ tic al al l th e w a% to a " $ e c ific ne i& h ! orh ood . ' ( ) ( fi! e rnod e ) c onve rt" th e o$ tic al " i& nal to an e l e c tric al " i& nal ove r c oa* . ' n ( ) t% $ ic al l % " e rve " + 00 h o, e " ( - - P . h ou " e h ol d " $ a" " e d ) ' t% $ ic al DOCSIS c onfi& u ration/ Single downstream channel is split to 4 FN T his conf igu ration serv es ty pically 2 0 0 0 homes passed b y a D S. ach FN has a single u pstream f re! u ency " b ou t # 0 0 $%0 0 0 su b scrib ers per downstream & not all homes hav e cab le modems' 8 8 !odu" a r C !# S 9 9 Inte g ra te d$C !# S % og ica " unctions I-C MT S D O C SI S M A C a n d u p p e r l a y e r Wide p r o t o c o l s A r ea N et w o r k D S PHY H y b r id F ib er -C o a x N et w o r k US PHY ( H F C ) 10 10 !odu" a r$C !# S & ' a s e ( DT I D O C SI S T i m i n g Se r v e r M-C MT S C o r e D O C SI S M A C DEPI DR F I a n d u p p e r l a y e r Wide p r o t o c o l s A r ea M-C MT S E Q A M H y b r id N et w o r k F ib er -C o a x D S PHY N et w o r k ( H F C ) US PHY 11 11 !odu" a r$C !# S & ' a s e 2 D O C SI S T i m i n g Se r v e r M-C MT S C o r e D O C SI S M A C a n d u p p e r l a y e r DEPI M-C MT S E Q A M Wide p r o t o c o l s A r ea D S PHY H y b r id N et w o r k F ib er -C o a x N et w o r k ( H F C ) US PHY U S R X U EPI 12 12 !$C !# S C om ) one nts a nd Inte r* a ce s Distribution Hub or Headend E d g e R e s o u r c e DOCSIS Op e r a t i o n s Ma n a g e r T i m i n g Se r v e r Su p p o r t S) s t e m DT I M-CMT S E R MI Co r e E Q A M DR " I DE ( I M-C MT S U p s t r e a m R e c e i v e r D o w n s tr e a m R F N e tw o r k Opt. T x . F i b e r " i # e r Ca # % e N o d e Co a $ C( E Di s t r i # u t i o n Mo d e m Di s t r i # u t i o n & CM' Opt.
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