Note This document has been written based on the following references:

1. 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: +82-331-200-3674 Fax: +82-331-200-3195 E-mail: dspark@mmrnd.sec.samsung.co.kr Tel: +1-310-825-0228 Fax: +1-310-825-7928 E-mail: villa@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.

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

3. 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 ?

4. 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

5. 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

6. 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

7. 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 AV Codec, Packetizer, RAS, RTCP UDP, RTP Call Control Speech Codec Signaling, Other Services Packetizer, Call Control IP MUX New RTP? RLP, MUX Link Layer Physical Layer

8. 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

9. Error-prone mobile link Base Station Mobile H.323 phone ISDN/PSTN IWF IP network GW Packet-lossy network H.323 terminal Mobile video Server Video on IP 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

10. 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

11. 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

12. 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

13. 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 V&V 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