CNG HO X HI CH NGHA VIT NAM

QCVN 84:2014/BTTTT

QUY CHUN K THUT QUC GIA V CHT LNG DCH V IPTV

TRN MNG VIN THNG CNG CNG C NH

National technical regulation on quality of IPTV service

in fixed public telecommunication networks

H NI - 2014

QCVN 84:2014/BTTTT

2

MC LC

1. QUY NH CHUNG ................................................................................................. 5

1.1. Phm vi iu chnh......................................................................................... 5

1.2. i tng p dng......................................................................................... 5

1.3. Ti liu vin dn ............................................................................................. 5

1.4. Gii thch t ng ............................................................................................ 5

1.5. Ch vit tt.. 6

2. QUY NH K THUT ...... 6

2.1. Cc ch tiu cht lng k thut ........ 62.1.1. Ch tiu cht lng tn hiu video ........ 6

2.1.2. Ch tiu thi gian tng tc ....... 8

2.1.3. Ch tiu ng b gia tn hiu video v audio...... 8

2.2. Cc ch tiu cht lng phc v ..... 8

2.2.1. kh dng ca dch v .......................................................................... 8

2.2.2. Thi gian thit lp dch v ........................................................................ 9

2.2.3. Thi gian khc phc dch v .................................................................... 9

2.2.4. Khiu ni ca khch hng v cht lng dch v .................................... 10

2.2.5. Hi m khiu ni ca khch hng............................................................ 10

2.2.6. Dch v h tr khch hng....................................................................... 10

3. QUY NH V QUN L ........................................................................................ 10

4. TRCH NHIM CA T CHC, C NHN .......................................................... 10

5. T CHC THC HIN ...........................................................................................11

TH MC TI LIU THAM KHO............................................................................ 12

QCVN 81:2014/BTTTT

3

Li ni u

QCVN 84:2014 c xy dng trn c s TCVN 8689:2011 Dch v IPTV trn mng vin thng cng cng c nh - Cc yu cu. Cc quy nh k thut v phng php xc nh trong QCVN 84:2014/BTTTT ph hp Khuyn ngh ITU-T G.1080 Lin minh Vin thng Th gii v TR-126. QCVN 84:2014 do V Khoa hc v Cng ngh bin son, thm nh v trnh duyt, B Thng tin v Truyn thng ban hnh km theo Thng t s 08/2014/TT-BTTTT ngy 30 thng 7 nm 2014.

QCVN 84:2014/BTTTT

4

QCVN 84:2014/BTTTT

5

QUY CHUN K THUT QUC GIA V CHT LNG DCH V IPTV

TRN MNG VIN THNG CNG CNG C NH National technical regulation

on quality of IPTV service in fixed public telecommunication networks

1. QUY NH CHUNG

1.1. Phm vi iu chnh Quy chun ny quy nh mc gii hn ca cc ch tiu cht lng i vi dch v IPTV (nh c nh ngha trong iu 1.4.1) trn mng vin thng cng cng c nh. 1.2. i tng p dng Quy chun ny p dng i vi C quan qun l nh nc v cc doanh nghip cung cp dch v IPTV trn mng vin thng cng cng c nh thc hin qun l cht lng dch v IPTV theo cc quy nh ca Nh nc v ca B Thng tin v Truyn thng. Quy chun ny cng l c s ngi s dng gim st cht lng dch v IPTV ca cc doanh nghip. 1.3. Ti liu vin dn [1] TR-126 Triple-Play Services Quality of Experience (QoE) Requirements, DSL Forum, Dec. 2006. [2] ITU-T G.1080 Quality of experience requirements for IPTV services, Dec, 2008. [3] ITU-R BT.500-11 Methodology for the subjective assessment of the quality of television pictures, 2002. [4] ITU-T J.247 Objective perceptual multimedia video quality measurement in the presence of a full reference, Aug, 2008. [5] IETF RFC 3357 One-way Loss Pattern Sample Metrics, Aug, 2002. 1.4. Gii thch t ng 1.4.1. Dch v IPTV l dch v a phng tin (nh truyn hnh, video, audio, vn bn, ha, s liu) truyn ti trn cc mng vin thng c nh da trn IP. 1.4.2. Doanh nghip cung cp dch v IPTV (DNCCDV) l doanh nghip thit lp mng v cung cp dch v IPTV theo cc quy nh hin hnh ca Nh nc v ca B Thng tin v Truyn thng. 1.4.3. Khch hng (ngi s dng dch v) l c nhn, t chc Vit Nam hoc nc ngoi s dng dch v IPTV ti Vit Nam. 1.4.4. Cht lng dch v l kt qu tng hp ca cc ch tiu th hin mc hi lng ca ngi s dng dch v i vi dch v . 1.4.5. S c l hng hc ca mt hoc mt s phn t trong mng ca DNCCDV dn n vic lm gin on cung cp dch v.

QCVN 84:2014/BTTTT

6

1.4.6. Phng php xc nh: Phng php xc nh l cc phng php nh gi cht lng dch v vi mc ly mu ti thiu c quy nh C quan qun l Nh nc v DNCCDV p dng trong vic o kim cht lng dch v. 1.5. Ch vit tt

AVC Advanced Video Coding B m ha hnh tin tin EPG Electronic Program Guide Hng dn chng trnh in t HDTV High Definition TeleVision Truyn hnh phn gii cao IP Internet Protocol Giao thc Internet

IPTV Internet Protocol TeleVision Truyn hnh da trn giao thc Internet MPEG Moving Pictures Expert Group M ha MPEG MOS Mean Opinion Score im nh gi trung bnh SDTV Standard Definition TeleVision Truyn hnh phn gii tiu chun STB Set Top Box Thit b thu v gii m tn hiu

VC-1 Video codec - 1 B m ha hnh c pht trin bi Microsoft VoD Video on Demand Video theo yu cu

2. QUY NH K THUT

2.1. Cc ch tiu cht lng k thut 2.1.1. Ch tiu cht lng tn hiu video 2.1.1.1. Cht lng tn hiu video nh ngha: Cht lng tn hiu video l ch s tch hp cht lng truyn video c xc nh bng cch tnh im trung bnh vi thang im MOS t 1 n 5 theo ITU-R BT.500-11. Ch tiu: im cht lng hnh nh trung bnh MOS 3,0. Phng php xc nh: Phng php m phng. S dng phng php o theo ITU-T J.247 v quy i ra thang im MOS. 2.1.1.2 Cc tham s truyn dn nh ngha: L cc ch tiu ti lp truyn ti m bo cht lng dch v video trong IPTV. Ch tiu: m bo cht lng dch v video, cc tham s truyn dn phi tun theo cc gi tr quy nh trong Bng 1, Bng 2, Bng 3, Bng 4 tng ng. Phng php xc nh: Phng php gim st. S dng cc thit b o gim st ti thit b nh thu bao (STB), trong iu kin STB c hoc khng c kh nng b li.

Cc tham s truyn dn ch p dng i vi cc lung IP truyn ti ni dung video. Trong cc Bng 1, 2, 3 v 4, cc ch tiu trong ct (2), (3) theo TR-126, cc ch tiu trong cc ct (4), (5) v (6) theo IETF RFC 3357.

QCVN 84:2014/BTTTT

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Bng 1 - Cc ch tiu truyn dn i vi dch v SDTV, VoD m MPEG-2

Bng 2 - Cc ch tiu truyn dn i vi dch v SDTV, VoD m MPEG-4 AVC hoc VC-1

Tc lung

(Mbit/s)

(1)

Tr (ms)

(2)

Rung pha

(ms)

(3)

Thi gian ln nht ca 1 li

(ms)

(4)

Chu k mt gi IP

(gi IP)

(5)

Tn sut mt gi (s kin li/gi)

(6)

T l mt gi lung IP video

trung bnh

(7) 1,75

QCVN 84:2014/BTTTT

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Bng 4 - Cc ch tiu truyn dn i vi dch v HDTV m MPEG-4 AVC hoc VC-1

Tc lung

(Mbit/s)

(1)

Tr (ms)

(2)

Rung pha

(ms)

(3)

Thi gian ln nht ca 1 li

(ms)

(4)

Chu k mt gi IP

(gi IP)

(5)

Tn sut mt gi (s kin li/gi)

(6)

T l mt gi lung IP video

trung bnh

(7) 8

QCVN 84:2014/BTTTT

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Trong :

rT : Thi gian xc nh kh dng ca dch v.

fT : Thi gian s c thuc trch nhim ca DNCCDV c tnh theo cng thc:

1

Ni

f ii i

rT tR=

= N : Tng s ln xy ra s c trong thi gian xc nh kh dng

iR : Tng s thu bao IPTV ti thi im xy ra s c th i

ir : S thu bao IPTV b nh hng trong s c th i

it thi gian s c th i

Ch tiu: kh dng ca dch v 99,5 %. Phng php xc nh: Phng php thng k. Thng k ton b s c trong thi gian xc nh kh dng. Thi gian xc nh kh dng ti thiu l 3 thng. 2.2.2. Thi gian thit lp dch v nh ngha: Thi gian thit lp dch v c tnh t lc DNCCDV v khch hng k hp ng cung cp dch v IPTV cho ti khi khch hng c th s dng c dch v ny. Nu DNCCDV khng th k hp ng cung cp dch v th trong vng 3 ngy k t thi im nhn c phiu yu cu cung cp dch v ca khch hng, DNCCDV phi c vn bn thng bo cho khch hng v vic t chi k kt hp ng dch v v nu r l do t chi. Ch tiu: t nht 90% s hp ng cung cp dch v c thi gian thit lp dch v trong khong thi gian quy nh nh sau: Trng hp khng lp t ng thu bao, E 5 ngy. Trng hp c lp t ng thu bao, E c cng thm thi gian lp t ng thu bao Ei: - Ni thnh, th x: Ei 7 ngy (Khng tnh ngy l, th 7 v ch nht). - Th trn, x, lng: Ei 15 ngy (Khng tnh ngy l, th 7 v ch nht). Phng php xc nh: Phng php thng k. Thng k ton b yu cu thit lp dch v IPTV ca DNCCDV trong khong thi gian t nht l 3 thng. 2.2.3. Thi gian khc phc dch v nh ngha: Thi gian khc phc dch v c tnh t lc DNCCDV nhn c thng bo v vic mt dch v t pha khch hng hoc t h thng thit b ca doanh nghip n lc dch v c khi phc. Ch tiu: t nht 90 % s ln mt dch v c khc phc trong khong thi gian quy nh nh sau: - Ni thnh, th x: R 36 h. - Th trn, x, lng: R 72 h.

QCVN 84:2014/BTTTT

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Phng php xc nh: Phng php thng k. Thng k y s liu khc phc dch v trong khong thi gian t nht l 3 thng. 2.2.4. Khiu ni ca khch hng v cht lng dch v nh ngha: Khiu ni ca khch hng l vic khch hng phn nh s khng hi lng v cht lng dch v c bo cho DNCCDV bng n khiu ni. Ch tiu: Khiu ni ca khch hng v cht lng dch v 0,25 khiu ni/100 khch hng/3 thng. Phng php xc nh: Phng php thng k. Thng k ton b s khiu ni ca khch hng v cht lng dch v trong khong thi gian ti thiu l 3 thng. 2.2.5. Hi m khiu ni ca khch hng nh ngha: Hi m khiu ni ca khch hng l vn bn ca DNCCDV thng bo cho khch hng c n, th khiu ni v vic tip nhn khiu ni v xem xt gii quyt. Ch tiu: DNCCDV phi c vn bn hi m cho 100 % khch hng khiu ni trong thi hn 48 h k t thi im tip nhn khiu ni. Phng php xc nh: Phng php thng k. Thng k ton b cng vn hi m cho khch hng v cht lng dch v trong khong thi gian ti thiu l 3 thng. 2.2.6. Dch v h tr khch hng nh ngha: Dch v h tr khch hng l dch v h tr, hng dn, gii p cho khch hng v dch v IPTV. Ch tiu: - Thi gian cung cp dch v h tr khch hng bng nhn cng qua in thoi l 24h trong ngy. - T l cuc gi ti dch v h tr khch hng chim mch thnh cng v nhn c tn hiu tr li trong vng 60 s 80 %. Phng php xc nh: Thc hin gi nhn cng ti dch v h tr khch hng, s cuc gi th ti thiu l 250 cuc gi vo cc gi khc nhau trong ngy.

3. QUY NH V QUN L

Dch v IPTV thuc phm vi quy nh mc 1.1 phi tun th cc quy nh ti Quy chun ny.

4. TRCH NHIM CA T CHC, C NHN

4.1. Cc doanh nghip cung cp dch v IPTV trn mng vin thng cng cng c nh c trch nhim m bo cht lng dch v tun th Quy chun ny. 4.2. Cc doanh nghip cung cp dch v IPTV trn mng vin thng cng cng c nh c trch nhim thc hin cam kt, cng b hp quy cht lng dch v theo Quy chun ny v chu s kim tra ca c quan qun l nh nc theo cc quy nh hin hnh.

QCVN 84:2014/BTTTT

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5. T CHC THC HIN 5.1. Cc Vin thng, Cc Pht thanh, truyn hnh v thng tin in t v cc S Thng tin v Truyn thng c trch nhim hng dn, trin khai qun l cc t chc, doanh nghip thc hin theo Quy chun ny. 5.2. Trong trng hp cc quy nh nu ti Quy chun ny c s thay i, b sung hoc c thay th th thc hin theo quy nh ti vn bn mi.

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TH MC TI LIU THAM KHO

[1] TCVN 8689 :2011 Dch v IPTV trn mng vin thng cng cng c nh - Cc

yu cu.