SIST ES 202 667 V1.1.1:2009

SLOVENSKI STANDARD
SIST ES 202 667 V1.1.1:2009
01-julij-2009
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Intellectual Property Rights ................................................................................................................................ 5

Foreword ............................................................................................................................................................. 5

1 Scope ........................................................................................................................................................ 6

2 References ................................................................................................................................................ 6

2.1 Normative references ......................................................................................................................................... 6

2.2 Informative references ...................................................................................................................................... 10

3 Definitions and abbreviations ................................................................................................................. 11

3.1 Definitions ........................................................................................................................................................ 11

3.2 Abbreviations ................................................................................................................................................... 12

4 Parameters affecting audiovisual user perceived quality ....................................................................... 13

4.1 Audiovisual user perceived quality model ....................................................................................................... 13

4.2 Coding algorithms ............................................................................................................................................ 14

4.2.1 Speech ......................................................................................................................................................... 14

4.2.2 Audio .......................................................................................................................................................... 15

4.2.3 Video .......................................................................................................................................................... 16

4.2.4 Lip synchronization .................................................................................................................................... 20

4.3 Network transmission protocols and principles ................................................................................................ 21

4.3.1 Unreliable communication .......................................................................................................................... 21

4.3.2 Multicast ..................................................................................................................................................... 21

4.3.3 Reliable communication ............................................................................................................................. 22

4.3.4 Multipoint ................................................................................................................................................... 22

4.3.5 DSL Access ................................................................................................................................................ 22

4.3.5.1 Asymmetrical DSL................................................................................................................................ 23

4.3.5.2 Symmetrical DSL .................................................................................................................................. 24

4.3.6 Wireless access ........................................................................................................................................... 24

4.3.6.1 2G Mobile access .................................................................................................................................. 24

4.3.6.2 3G Mobile access .................................................................................................................................. 24

4.3.6.3 DECT .................................................................................................................................................... 25

4.3.6.4 Broadband Wireless Access .................................................................................................................. 26

4.3.6.5 WLAN ................................................................................................................................................... 27

4.3.7 Broadcasting ............................................................................................................................................... 27

4.4 Network performance parameters .................................................................................................................... 28

4.4.1 Transmission bandwidth ............................................................................................................................. 28

4.4.1.1 General considerations .......................................................................................................................... 28

4.4.1.2 Speech transmission .............................................................................................................................. 28

4.4.1.3 Audio transmission ............................................................................................................................... 28

4.4.1.4 Video transmission ................................................................................................................................ 30

4.4.2 Packet loss .................................................................................................................................................. 30

4.4.2.1 General considerations .......................................................................................................................... 30

4.4.2.2 Speech transmission .............................................................................................................................. 30

4.4.2.3 Audio transmission ............................................................................................................................... 31

4.4.2.4 Video transmission ................................................................................................................................ 32

4.4.3 Transmission delay ..................................................................................................................................... 33

4.4.3.1 General .................................................................................................................................................. 33

4.4.3.2 Transmitting terminal delay .................................................................................................................. 33

4.4.3.3 Access network delay ............................................................................................................................ 34

4.4.3.4 Core network delay ............................................................................................................................... 35

4.4.3.5 Receiving terminal delay ....................................................................................................................... 35

4.4.4 Transmission delay variations (jitter) ......................................................................................................... 35

4.5 Terminal characteristics ................................................................................................................................... 36

4.5.1 Packet loss recovery.................................................................................................................................... 36

4.5.2 Playout buffer ............................................................................................................................................. 36

4.5.3 Audio characteristics................................................................................................................................... 36

4.5.4 Video display .............................................................................................................................................. 36

4.6 Audio-video interaction .................................................................................................................................... 37

5 Audiovisual applications classification .................................................................................................. 37

5.1 Delay sensitive applications ............................................................................................................................. 38

5.2 Delay insensitive applications .......................................................................................................................... 38

6 Delay sensitive audiovisual applications requirements .......................................................................... 38

6.1 Coding algorithms ............................................................................................................................................ 38

6.1.1 Narrowband speech..................................................................................................................................... 38

6.1.2 Wideband speech ........................................................................................................................................ 39

6.1.3 Video .......................................................................................................................................................... 39

6.2 Network performance requirements ................................................................................................................. 40

6.3 Terminal characteristics ................................................................................................................................... 41

6.3.1 Narrowband speech..................................................................................................................................... 41

6.3.2 Wideband speech ........................................................................................................................................ 41

6.3.3 Video .......................................................................................................................................................... 41

7 Delay insensitive audiovisual applications requirements ....................................................................... 41

7.1 Coding algorithms ............................................................................................................................................ 41

7.1.1 Audio .......................................................................................................................................................... 41

7.1.2 Video .......................................................................................................................................................... 42

7.2 Network performance requirements ................................................................................................................. 43

7.3 Terminal characteristics ................................................................................................................................... 44

7.3.1 Audio .......................................................................................................................................................... 44

7.3.2 Video .......................................................................................................................................................... 44

Annex A (informative): Audio-video quality interaction .................................................................... 45

A.1 Introduction ............................................................................................................................................ 45

A.2 Available information............................................................................................................................. 45

A.2.1 TR 102 479 ....................................................................................................................................................... 45

A.2.2 Results presented to ITU-T Recommendation SG 12 ...................................................................................... 47

Annex B (informative): QoS mechanisms and the effects on connection performance ................... 50

B.1 Introduction ............................................................................................................................................ 50

B.2 QoS mechanisms .................................................................................................................................... 50

B.2.1 Integrated services (IntServ)............................................................................................................................. 50

B.2.2 Differentiated services (DiffServ) .................................................................................................................... 50

B.2.3 WLAN QoS mechanism ................................................................................................................................... 51

B.2.4 WiMax QoS mechanism .................................................................................................................................. 52

B.2.5 HSPA packet scheduling .................................................................................................................................. 52

B.2.6 RACS ............................................................................................................................................................... 53

B.3 Effects on connection performance ........................................................................................................ 55

Annex C (informative): Packet loss recovery ....................................................................................... 56

C.1 Introduction ............................................................................................................................................ 56

C.2 Application layer packet loss recovery methods .................................................................................... 56

C.2.1 Speech and audio recovery ............................................................................................................................... 56

C.2.2 Video recovery ................................................................................................................................................. 59

C.3 Performance improvement ..................................................................................................................... 60

Annex D (informative): Provisional QoS Classes defined in ITU-T Recommendation Y.1541 ....... 62

History .............................................................................................................................................................. 63

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pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

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can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web

This ETSI Standard (ES) has been produced by ETSI Technical Committee Speech and multimedia Transmission

The present document addresses combination network performance parameters and user perceived media (audio and

The access technologies covered include both wired (e.g. xDSL) and wireless (e.g. UMTS, WLAN) technologies.

The display size range covered is from those of small mobile terminals (e.g. 2") up to large TV sets (e.g. 40" or more).

• Interactive point-to-pint applications such as videotelephony and videoconferencing.

Where the media coding standards define two or more profiles, the baseline profile is addressed in the normative part of

Informative annexes present an overview of network QoS mechanisms and the effects on connection performance as

well as guidance on terminal parameters that may influence the user perceived media performance.

References are either specific (identified by date of publication and/or edition number or version number) or

• Non-specific reference may be made only to a complete document or a part thereof and only in the following

- if it is accepted that it will be possible to use all future changes of the referenced document for the

Referenced documents which are not found to be publicly available in the expected location might be found at

NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee

The following referenced documents are indispensable for the application of the present document. For dated

references, only the edition cited applies. For non-specific references, the latest edition of the referenced document

[1] ITU-T Recommendation Y.1540: "Internet protocol data communication service - IP packet

[2] ITU-T Recommendation Y.1541: "Network performance objectives for IP-based services".

[3] ITU-T Recommendation G.711: "Pulse Code Modulation (PCM) of voice frequencies".

[5] ITU-T Recommendation G.723.1: "Dual rate speech coder for multimedia communications

[6] ITU-T Recommendation G.726: "40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code

[7] ITU-T Recommendation G.728: "Coding of speech at 16 kbit/s using low-delay code exited linear

[8] ITU-T Recommendation G.729: "Coding of speech at 8 kbit/s using conjugate-structure

[9] ITU-T Recommendation G.729.1: "G.729 Embedded Variable bit-rate coder: An 8-32 kbit/s

[10] ETSI TS 126 071 (V6.0.0): "Digital cellular telecommunications system (Phase 2+); Universal

[11] 3GPP2 C.S0014-C v1.0 Enhanced Variable Rate Codec, Speech Service Option 3, 68 and 70 for

[12] ITU-T Recommendation G.722.1: "Low-complexity coding at 24 and 32 kbit/s for hands-free

[13] ITU-T Recommendation G.711.1: "Wideband embedded extension for G.711 pulse code

[14] ETSI TS 126 171 (V6.0.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); AMR speech codec, wideband; General description

[15] IETF RFC 3351: "RTP Profile for Audio and Video Conferences with Minimal Control".

[16] ISO/IEC 11172: "Information technology -- Coding of moving pictures and associated audio for

[17] ISO/IEC 13818: "Information technology -- Generic coding of moving pictures and associated

[18] ISO/IEC 14496: "Information technology -- Coding of audio-visual objects (MPEG 4; currently in

[19] ETSI TS 126 290 (V6.3.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS) Audio codec processing functions; Extended

[20] ITU-T Recommendation G.719: "Low-complexity full-band audio coding for high-quality

[21] ETSI TS 102 366: "Digital Audio Compression (AC-3, Enhanced AC-3) Standard".

[22] ITU-T Recommendation H.261: "Video codec for audiovisual services at p × 64 kbit/s".

[23] ITU-T Recommendation H.262: "Information technology - Generic coding of moving pictures and

[25] ITU-T Recommendation H.264: "Advanced video coding for generic audiovisual services".

[26] SMPTE 421M (2006): "Television - VC-1 Compressed Video Bitstream Format and Decoding

[27] ITU-R Recommendation BT.1359-1: "Relative timing of sound and vision for broadcasting".

[29] ETSI TS 122 146 (V7.1.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); LTE; Multimedia Broadcast/Multicast Service

[31] ITU-T Recommendation G.995.1: "Overview of digital subscriber line (DSL) Recommendations".

[32] IEEE 802.3 (2005): "IEEE Standard for Information technology-Telecommunications and

information exchange between systems-Local and metropolitan area networks; Specific

requirements Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access

[35] ITU-T Recommendation G.991.1: "High bit rate Digital Subscriber Line (HDSL) transceivers".

[36] ITU-T Recommendation G.991.2: "Single-pair high-speed digital subscriber line (SHDSL)

[37] ETSI TS 101 113 (V7.5.0): "Digital cellular telecommunications system (Phase 2+) (GSM);

[38] ETSI TS 122 228 (V8.5.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); Service requirements for the Internet Protocol (IP)

multimedia core network subsystem (IMS); Stage 1 (3GPP TS 22.228, version 8.5.0 Release 8)".

[39] ETSI TS 122 173 (V7.5.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); IP Multimedia Core Network Subsystem (IMS)

[40] ETSI TS 125 308 (V7.7.0): "Universal Mobile Telecommunications System (UMTS); High Speed

[41] ETSI TS 125 319 (V7.6.0): "Universal Mobile Telecommunications System (UMTS); Enhanced

[42] ETSI TS 123 107 (V7.1.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); Quality of Service (QoS) concept and architecture

[43] ETSI TS 123 207 (V7.0.0): "Digital cellular telecommunications system (Phase 2+); Universal

Mobile Telecommunications System (UMTS); End-to-end Quality of Service (QoS) concept and

[44] ETSI EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common

[45] IEEE 802.16 (2004): "Standard for Local and metropolitan area networks. Part 16: Air Interface

[46] IEEE 802.11 (2007): "Information technology - Telecommunications and information exchange

between systems - Local and metropolitan area networks. Specific requirements. Part 11: Wireless

[47] ETSI EN 300 401: "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile,

[48] ETSI TS 102 428: "Digital Audio Broadcasting (DAB); DMB video service; User Application

[49] ETSI EN 302 307: "Digital Video Broadcasting (DVB); Second generation framing structure,