GII THIU V DCH V IPTV

NI DUNG Gii thiu dch v IPTV Kt ni h thng IPTV vi h tng mng VNPT Yu cu k thut pha VNPT tnh thnh Phi hp gia VASC VTN VNPT Tnh thnh trin khai IPTV ti cc node.

PHN Inh ngha:

GII THIU V DCH V IPTV

IPTV (Internet Protocol Television) l dch v truyn ti hnh nh k thut s ti ngi s dng qua giao thc IP trn mng Internet vi kt ni bng thng rng. N thng c cung cp kt hp vi VoIP, video theo yu cu... nn cn c gi l cng ngh TriplePlay (d liu, m thanh v hnh nh).

CC DCH V IPTV CUNG CP1. Dch v Live TVy c hiu l dch v truyn hnh s trn nn mng IP cung cp dng pht (Broadcast) nhng chng trnh truyn hnh c thu li t h thng truyn hnh mt t, truyn hnh cp, truyn hnh v tinh hoc knh truyn hnh ring ti khch hng.g

2. Dch v VOD

3. TVoD (TV on Demand)Tnh nng ny cho php cc chng trnh LiveTV c lu li trn server trong mt khong thi gian no . Khch hng sau c th la chn xem li (nh i vi VoD) cc chng trnh m mnh b l. Thi gian lu tr cc chng trnh c th t thay i linh ng theo nhu cu thc t. H thng s h tr c 2 cch thc l lu tr theo thi gian v lu tr theo chng trnh c chn no .

4. Time-shifted TVTnh nng tm dng TV l tnh nng gip ngi xem c th tm dng knh truyn hnh ang pht v c th xem tip sau .

5. NVoD (Near Video on Demand)Chc nng ny cho php h thng pht mt chng trnh truyn hnh hoc VoD ty chn lp li nhiu ln trn cc knh multicast khc nhau. Vi cng mt ni dung pht cch nhau mt khong thi gian (Interval), do vy khch hng c th tr tin PPV (Pay-per-view) v xem ti cc thi im ty . H thng c kh kh nng thit lp dch v NVoD vi cc chng trnh truyn hnh hoc VoD. H tr kh nng tnh cc theo PPV hoc theo gi dch v.

6. CCH DCH V GI TR GIA TNG VASNgoi cc dch v truyn thng ca truyn hnh. IPTV vt tri hn c vi tnh nng truyn hnh tng tc gia khch hng v nh cung cp ni dung. Chnh v vy cc dch v gi tr gia tng trn nn IPTV cng rt l a dng nh : + Dch v Karaoke theo yu cu + Dch v Game theo yu cu + Dch v MobieTV ( trong tng lai ) + Dch v Voteing vv

PHN II KT NI H THNG IPTV VI MNG LI CA VNPT

M HNH U NI :

H thng VOD node c t ti cc tnh

IPTV SystemPE M320 PE Mng metro khc

M320

Core Network VNPTM320

PE Metro Network VTTVOD server

CS 7609 Access Switch

ST B Gateway

PC

FTTX STB+TV IP Dslam Modem PC

DSLAM PC STB+TV

M HNH HOT NG TRN MNG ADSL : 1. Pha mng khch hng:Mng khch hng s dng m hnh nh x dch v multi-PVC. - Dch v IPTV c cung cp trn cc kt ni ADSL2+. Mi kt ni ADSL2+ n thu bao gm c 2 PVC khc nhau nhm cung cp 2 loi dch v: PVC 1: cung cp dch v truy nhp Internet tc cao (HSI). PVC 2: cung cp dch v video (bao gm c VoD, LiveTV, VAS ...). - Khch hng s dng cc thit b u cui khc nhau cho tng loi dch v: Video: STB (Set-Top - Box). Internet: PC Kt ni ADSL2+ c kt cui bi thit b modem. Cc thit b ny chuyn cc lu lng trn cc PVC n cc giao din u ra tng ng kt ni vi cc thit b u cui dch v.

M HNH HOT NG (Tip theo) :

PC/HG thc hin quay s kt ni PPPoE n BRAS ly a ch IP truy nhp Internet STB, IAD ly a ch IP thng qua DHCP IAD

PE thc hin DHCP relay

DHCP server s dng option 8/8 xc thc thu bao 88 DHCP server

IPTV center

DHCP (IP

oE)

TV+STB Home Gateway DSLAM Access switchP PPo E

IP/MPLS core networkCore switch PE

PC BRAS IPTV services Internet services Kt cui PPPoE v chuyn tip ra Internet

S cung cp a ch ng DHCP cho STB

Internet

S cung cp a ch ng DHCP cho STB ( tip theo): i vi dch v truy nhp Internet tc cao (HSI), thu bao thc hin quay s PPPoE n BRAS. BRAS cp a ch IP cho tng kt ni PPPoE, thc hin NAT (nu cn) v chuyn tip cc lu lng ra Internet. i vi cc dch v IPTV, a ch IP c cp pht ng bng DHCP. Ti BRAS hoc PE cu hnh DHCP relay chuyn tip cc gi tin DHCP n DHCP server v thc hin nh tuyn cc gi tin ca cc dch v ny n ch mong mun.

M HNH HOT NG (Tip theo) : 2. Pha mng truy nhp Mng truy nhp ti cc tnh thnh c trin khai theo m hnh S-VLAN ( Vlan per service) * Nguyn tc thc hin m hnh ny nh sau: Mng truy nhp ti cc tnh thnh bao gm cc thit b mng, cc kt ni mng t cc DSLAM n BRAS, PE Trong mng truy nhp cu hnh cc VLAN khc nhau cho tng loi dch v s c cung cp. Ti bin ca mng truy nhp, cc lu lng trc khi i vo mng c phn loi nh x vo cc VLAN dch v.

2. Pha mng truy nhp (Tip theo):C th i vi h thng mng hin ti, m hnh S-VLAN hot ng nh sau: Ti cc IP-DSLAM, mi cng ADSL2+ gm 3 PVC, mi PVC dnh cho mt dch v (Internet, VoIP, video). Ti cc giao din uplink, cc PVC c nh x vo cc S-VLAN tng ng vi tng loi dch v s dng phng thc ng gi 802.1q Ti cc switch lp 2, access switch, cu hnh cc giao din trunk mang lu lng ca cc S-VLAN ny. BRAS/PE c nhim v kt cui cc S-VLAN v thc hin nh tuyn cc gi tin n ch mong mun. Cc bin php m bo QoS c p dng trn tng S-VLAN thng qua cu hnh 802.1p i vi cc S-VLAN tng ng. Ti BRAS/PE, ni kt cui cc S-VLAN, thc hin QoS lp 3 bng DSCP (Diffrentiated Service Code Point). Nh vy ti BRAS/PE cn cu hnh chuyn i QoS t 802.1p ca lp 2 sang DSCP ca lp 3.

2. Pha mng truy nhp (Tip theo):M hnh s-vlan trong mng truy nhp HSI Vlan : Vlan dnh cho internet VOD vlan: Vlan dnh cho dch v VOD chy unicast LiveTV vlan: Vlan dnh cho dch v liveTV chy multicast

3. Lu lng multicast cho dch v boardcast TV- tit kim ti nguyn mng , mt s dch v ca h thng IPTV nh

LiveTV v NVOD s dng phng thc truyn ti lu lng multicast. cc lu lng multicast c th truyn ti trong h thng mng mt cch hiu qu, cc tnh nng multicast cn c h tr ti cc thit b mng. Cc giao thc thc hin ti cc thit b mng nh hnh di y :

Lu lng multicast cho dch v boardcast TV

4. Tnh ton bng thng cho dch v LiveTV v VOD - Xem ph lc Yu cu k thut cho IPTV.

M HNH HOT NG TRN MNG FTTx :Thc ra m hnh hot ng ca h thng IPTVtrn mng FTTx tng t nhmng ADSL . Ch thay th thit b DSLAM bng OLT. - M hnh trin khai FTTx

M HNH HOT NG TRN MNG FTTx :Kt ni h thng IPTV qua FTTx

PHN III : Mt s yu cu k thut1. Yu cu thit b : a. DSLAM : Bt buc phi l IP-DSLAM H tr giao thc IGMP snooping, proxy. Phn loi lu lng v nh x PVC S-VLAN. H tr giao thc 802.1q ; 802.1p H tr DHCP option 82 H tr full tc GE kt ni ti sevice slot. Bng thng c th ti 1G cho mi slot cho c im HDTV b. Access switch , Core switch H tr giao thc IGMP snooping , proxy H tr giao thc 802.1q ; 802.1p

Phn III : Mt s yu cu k thut (tip):1. Yu cu thit b (tip): c . PE / BRAS H tr giao thc IGMP v2, v3. Giao thc PIM-SM , PIM-SSM H tr DHCP relay, 802.1q; 802.1p DSCP (Differentiated Service Code Point) Phn loi lu lng v nh x 802.1p DSCP H tr giao thc OSPF , IS - IS QoS cho tn hiu video. H tr DiffServ model. PE m bo cn d cng kt ni GE ti h thng VOD server node.

2. Yu cu thit b pha u cui khch hng:a. Bng thng yu cu ADSL - Bng thng ti thiu cho dch v IPTV l 3M - Khong cch t DSLAM n modem khch hng khuyn ngh di 2km. b. Modem: - Modem h tr vic cu hnh multi PVC - Modem c nhiu ethernet port - C th h tr thm chc nng cu hnh Vlan tag cho tng port. - Modem c cu hnh 2 PVC ring bit chy song song 2 dch v IPTV v Internet + PVC1 : Cu hnh cho dch v IPTV, ch Brigde VPI = 0 , VCI = 34 + PVC2 : Cu hnh cho dch v internet , ch PPPOE

Phn III : Yu cu k thut ( tip) :

3.

Mt s yu cu h tng phc v h thng IPTV node khi trin khaiDo VASC s lp t cm VOD server node ti cc tnh thnh nhm gim ti lu lng cho mng core. Chnh v vy VASC cn s gip t pha VNPT tnh thnh v mt bng lp t node VOD server ny , trn c s m bo cc yu t :

V tr np t tt nht l gn PE ( v node VOD kt ni ti PE) m bo tuyn cp quang t h thng IPTV node ln PE vi giao din kt ni c tc Gbps ( tc c th cn ph thuc vo s thu bao ti tng node ) Pha VNPT tnh thnh m bo k hoch bn giao mt bng cho VASC trc khi thit b c a n site.

Mt bng , cng sut in , iu ha v cc h thng ph tr phi tha mn cc yu cu cho thit b IT chy n nh.

Phn IV : Phi hp gia VASC VTN VNPT Tnh thnh trin khai IPTV1. Cng ty VASC VASC v i tc ZTE vn chuyn thit b n site Lp t thit b vo t Rack , ci t phn mm u ni h thng vo h tng mng ca VNPT tnh thnh Test th nghim

2.

Cng ty VTN Chun b cc cng kt ni ti PE ti h thng VOD server node. Cu hnh cc thit b thuc phm vi qun l : PE , M320 m bo ng truyn thng sut t h thng IPTV n mng truy nhp VNPT Tnh thnh

2.

VNPT Tnh thnh VNPT tnh thnh chun b h tng mt bng cho vic lp t h thng. K s ca VNPT tnh thnh tham gia vo vic cu hnh tch hp h thng IPTV node vo h thng mng ca VNPT VNPT Tnh thnh cu hnh DSLAM , Core Switch , access switch kt ni n h thng IPTV VNPT tnh thnh cu hnh modem, STB cho khch hng khi i trin khai thu bao n h gia nh. K s VNPT tnh thnh l ngi s trc tip qun l h thng IPTV node ( c th) vi mt s quyn u tin c cp pht t VASC.

XIN CHN THNH CM N !