Summary of 3GPP2 TSG-C May Meeting

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ITU - Telecommunication Standardization Sector
Study Group 16 Video Coding Experts Group
(Question 15) Eighth Meeting Red Bank, 19-22
October 1999
Document Q15-I-15 Filename q1415.ppt
Generated 9 October 1999
Question Q.15/SG16 Source D.-S. Park
Samsung Electronics Suwon, Korea John D.
Villasenor Dept. of Electrical Engineering
University of California Los Angeles, CA 90095
U.S.A.
Tel [phone] Fax [phone]
E-mail dspark_at_mmrnd.sec.samsung.co.kr
Tel [phone] Fax [phone]
E-mail villa_at_icsl.ucla.edu
Title Video Services in IMT-2000
Purpose FYI
Note This document has been written based on the
following references 1 Operators Harmonization
Group, Harmonized G3G frame work for ITU
IMT-2000 CDMA proposals, June, 1999. 2 3GPP
Technical Specification 3G TS 26.110 Codec for
Circuit Switched Multimedia Telephony Service,
September, 1999 3 3GPP2 C12-19990814-004 Video
Service Requirement, August, 1999.
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Table of Contents

• G3G to harmonize 3GPP and 3GPP2
• General Requirement for Video Services
• Update on Multimedia-Related Groups in 3GPP/3GPP2

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G3G for ITU IMT-2000Harmonization Overview
CDMA II, WCDMA
CDMA2000
UW-136
WCDMA N/A
TD-SCDMA
June, 1998
CDMA 1
DECT
UTRA, WIMS
TDMA/CDMA (Hybrid TDD)
CDMA FDD
TDMA
WP-CDMA
UWC-136
TD-CDMA
March, 1999
CDMA 2000
DECT
TD-SCDMA
Paired DS/MC Unpaired TDD
December, 1999
December, 2000 ?
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G3G for ITU IMT-2000Technical Specification

• Harmonized DS and MC will be based on WCDMA and
  CDMA2000, respectively
• Inter base station synchronization
• Forward link pilot structure
• Chip rate
• 3.84 Mcps for Direct Spread
• 3.6864 Mcps for Multi Carrier
• 3.84 Mcps for Time Division Duplex
• RF parameters

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G3G for ITU IMT-2000Phased Harmonization Approach

• Hooks and Extension
• Phase 1 three radio layers and hooks to meet
  Release 99 of 3GPP and 3GPP2
• Phase 2 completion of extension to fully support
  ANSI41 and GSM

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Requirements for Video Services

• Use of existing standards opposed to develop new
  video coding/conferencing standards
• Transcoding/Interworking Functions
• Source Codec One mandatory and optional mode(s)
  rather than transcoding
• System Issue New system rather than Interworking
  function (e.g., H.323-to-mobile H.323 rather than
  H.323-to-H.324M)
• Synchronization
• Intramedia synchronization
• Intermedia synchronization
• Impact of video on existing low layers shall be
  minimized. However, by-passing video data to
  upper layer is recommended for better error
  handling

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Requirements - Impact of Video over 3G
Need selection of options Might need change Might
be influenced by video media
Packet Video Service
Circuit Video Service
Reliable Delivery
Un-Reliable Delivery
Video Codec
Call Control
Speech Codec
AV Codec, Packetizer, RAS, RTCP UDP, RTP
Signaling, Other Services
Packetizer, Call Control
IP
MUX
New RTP?
RLP, MUX
Link Layer
Physical Layer
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Requirements for Video Services

• Advanced charging issues
• total connecting time
• total number of correct packets received
• any new method with or without combination of the
  two previous methods
• Mandatory/optional recommendations in video
  encoder and decoder
• Encoder side coding options for error resilience
  
• Decoder side capability to decode certain coding
  options, error detection, error concealment
• Informative Implementation Guide
• Error resilience against burst error that most of
  current commercial chipsets do not handle
  Average bit error rate seen by video decoder
  should be below about O(10-4), though decoder
  should not crash when presented with very high
  bit error rate (approximately .5).
• Minimization of error propagation using INTRA
  update and/or effective error concealment
• Mandatory aspects in decoder side

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Candidate Video Services over 3GPP/3GPP2

• H.323 (Mobile version H.323) based Packet Video
  Service
• Real time video conferencing
• Real time one-way video streaming
• Non-real time video streaming

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Candidate Video Services over 3GPP/3GPP2

• H.324M based Circuit Video Service
• Real time video conferencing

Error-prone mobile link
Error-prone mobile link
Base Station
Mobile H.324M phone
Mobile H.324M phone
IWF
ISDN/PSTN
H.324, H.324/D terminal
Mobile video
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Work Items of 3GPP TSG-S4

• Mandatory Speech Codec Use of Adaptive MultiRate
  Codec (AMR)
• Low Bitrate Multimedia Telephony System
  H.324M-based Video Telephony System (targeting
  Release 99)
• QoS for Speech and Multimedia Codec
• Codec(s) for Wideband Telephony Services
• Tandem Free Operations in 3G or between 2G and 3G
  systems

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Low Bitrate Videotelephony System from 3GPP TSG-S4

• Based on ITU-T H.324M

. . . Optional Features
Video I/O Equipment
Video Codec H.263, MPEG-4, H.261
Multiplex/ Demultiplex H.223, H.223 Annex A,
H.223 Annex B, H.223 Annex C, H.223 Annex D
3GPP Network
Audio I/O Equipment
Speech Codec 3GPP-AMR, G.723.1
Optional Receive Path Delay
User Data Applications T.120,
Data Protocols V.14, LAPM,
System Control
H.245
Call Set-up
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Multimedia-Related Work Items of 3GPP2 TSG-C1

• Development of new speech codec - Selectable Mode
  Vocoder
• Working Draft scheduled to be available in May
  2000
• Followed by VV process
• Defining video services and selection of video
  codec schemes
• Requirement to be finished this year
• Packet and circuit-based video services and their
  corresponding call setup procedures will be
  discussed targeting Release2000
• ISDN-Interworking
• QoS parameterization