Annex 1 to AVC-632R

Documents for the Paris meeting
(16-24 March 1994)

Normal Documents

*	Inputs to the joint meeting with SG13 as working documents
AVC number	MPEG number	Pur-pose	
Title (Source)	
AVC-598R	-	R	Report of the fourteenth Experts Group meeting in Daejeon and Seoul (October 27 - November 5, 1993) - Part I and Part II (Rapporteur)	
AVC-599R	-	R	Report of the fourteenth Experts Group meeting in Daejeon and Seoul (October 27 - November 5, 1993) - Part III (Rapporteur)	
AVC-600	N0659	R	CD13818-2 - Video (WG11 Editorial Group)	
AVC-601	N0658	R	CD13818-1 - Systems (WG11 Editorial Group)	
AVC-602	N0660	R	CD13818-3 - Audio (WG11 Editorial Group)	
AVC-603	-	I	The teleseminar on workstation and computer networks (INRIA)	
AVC-604*	-	I	About the ability of AAL type 1 for the transport of MPEG 2 signals (ITU-T SG9)	
AVC-605	SC29 N710	P	Comments on ISO/IEC 13818-1 Systems CD (Australia NB)	
AVC-606*	-	D	A layer model for H.22x, multimedia multiplex and synchronization for audiovisual communication in ATM environments (KPN, PTT Research - Netherlands)	
AVC-607	-	I	Japanese contributions related to H.32X specifications (Japan)	
AVC-608	-	D	Terminal specifications for high quality videoconferencing (Japan)	
AVC-609*	-	D	Multimedia multiplex and AAL for high quality videoconferencing (Japan)	
AVC-610	-	D	Terminal specifications for audiovisual communication using WS (Japan)	
AVC-611*	-	D	Multimedia multiplex/AAL for audiovisual communication using WS (Japan)	
AVC-612	-	D	Terminal specifications for broadcasting including CATV (Japan)	
AVC-613*	-	D	Multimedia multiplex/AAL for broadcasting including CATV (Japan)	
AVC-614	041	D&P	bit_rate field in VBR operation (Japan)	
AVC-615	044	P	Comments for CD13818-2 | Draft Rec. H.262 (Japan)	
AVC-616*	-	D	Cell loss correction method with low processing delay (Japan)	
AVC-617*	054	D	Cell loss correction method in AAL for the transmission of MPEG 2 Transport packets (Japan)	
AVC-618*	-	I&D	Issues related to the transmission of MPEG bitstreams over ATM (BT - UK)	
AVC-619	-	D	Some H.32X audiovisual terminal issues (Australian UVC consortium)	
AVC-620	-	D	Draft skeleton text for H.22X (S. Dunstan)	
AVC-621	-	P	Recommendations on preparation of H.22x (IBM and AT&T Communications)	
AVC-622	039	D&P	Evolution of H.22x - Multimedia multiplex to include MPEG-2 systems (IBM)	
AVC-623	-	D	Draft skeleton text for H.32X (C-C. Li)	
AVC-624	-	D	Draft skeleton text for H.32Y (S. Okubo)	
AVC-625	-	R	Status report on the study of network adaptation (Rapporteur)	
AVC number	MPEG number	Pur-pose	
Title (Source)	
AVC-626	SC29 N710	I	Belgian National Body comments on MPEG-2 CD's (BELGACOM)	
AVC-627	-	D	General approach to H.32z (UK)	
AVC-628	071	I	Simulation of Phase-Locked Loop for Jittered PCR's (AT&T)	
AVC-629	-	R	Status report on AAL1&2 for video signal support (K. Yamazaki, Rapporteur for Q.6/13)	
AVC-630*	-	P	Inclusion of MPEG TS-layer with jitter compensation in H.22X (KPN, PTT Research - Netherlands)	

Abstract

[nnn] indicates MPEG Document Number MPEG94/nnn.

AVC-598R	[-]	Report of the fourteenth Experts Group meeting in Daejeon and Seoul 		(October 27 - November 5, 1993) - Part I and Part II (Rapporteur)

This document records the outcome of the Daejeon sole sessions held in October 1993.

AVC-599R	[-]	Report of the fourteenth Experts Group meeting in Daejeon and Seoul 		(October 27 - November 5, 1993) - Part III (Rapporteur)

This document records the outcome of the Seoul joint sessions held in November 1993, covering Requirements, Video, Implementation Study and Systems sub-groups.

AVC-600	[N0659]	CD13818-2 - Video (WG11 Editorial Group)

This document contains Video part of CD which was put forward to the SC29 ballot in December 1994.

AVC-601	[N0658]	CD13818-1 - Systems (WG11 Editorial Group)

This document contains Systems part of CD which was put forward to the SC29 ballot in December 1994.

AVC-602	[N0660]	CD13818-3 - Audio (WG11 Editorial Group)

This document contains Audio part of CD which was put forward to the SC29 ballot in December 1994.

AVC-603	[-]	The teleseminar on workstation and computer networks (INRIA)

This document describes a tele-teaching and videoconferencing system using workstations and computer networks including INTERNET, which is now used for tele-seminars and collaborative working.

AVC-604	[-]	About the ability of AAL type 1 for the transport of MPEG 2 signals 
		(ITU-T SG9)

This document provides SG9's opinion that AAL 1 is adequate for the transport of MPEG-2 CBR signals and its workplan that a Rapporteur Group will further examine the relevant contribution attached to this document.

AVC-605	[SC29 N710]	Comments on ISO/IEC 13818-1 Systems CD (Australia NB)

A total of 135 comments are given to improve the text; most of them are editorial nature.  Two items are requiring modification of semantics for PES packet stuffing_byte and stream_id table.  Attention is drawn to the correction on time stamp equations in the STD description.

AVC-606*	[-]	A layer model for H.22x, multimedia multiplex and synchronization for 		audiovisual communication in ATM environments (PTT Research)

Two versions of detailed layer model for the network adaptation are presented; one with TS layer, the other without it.  Objectives are to clarify the options and choices for H.22X in combination with MPEG Systems, to identify appropriate interface points and to provide a basis for the allocation of functions to layers and the specifications for these layers.  Necessity of jitter margin specification in the standard is also pointed out.

AVC-607	[-]	Japanese contributions related to H.32X specifications (Japan)

This is a lead paper for the subsequent six documents (AVC-608 to 613) presenting the case study results on typical applications on B-ISDN; high quality videoconferencing, audiovisual communications using work stations and broadcasting including CATV.  Terminal specifications and network adaptation are addressed.  How to integrate these specifications into a single Recommendation H.32X is pointed out as an issue.

AVC-608	[-]	Terminal specifications for high quality videoconferencing (Japan)

This document describes H.32X mandatory and optional specifications covering various aspects such as applications, input/output equipment, number and kind of different media, control channel, video coding, audio coding, network adaptation, multipoint, multimedia synchronization, error handling.  It is raised that a hierarchical structure of terminal classes is necessary; CIF/QCIF, ITU-R BT.610 and HDTV.

AVC-609*	[-]	Multimedia multiplex and AAL for high quality videoconferencing
		(Japan)

VBR operation for real time audiovisual communication (high quality videoconferencing) is discussed in terms of delay, packing efficiency and error resilience.  It is stressed that multiplexing interval time is restricted for low delay operation, leading to a conclusion that the delay is not a decisive factor for the AAL choice.  Several AAL solutions based on existing AAL 1, 3/4 and 5 are provided and compared in packing efficiency and error resilience.  The choice depends on the network QoS.

AVC-610	[-]	Terminal specifications for audiovisual communication using WS 
		(Japan)

This document discusses the configuration of AV communication terminal using work stations.  Some functions such as N-ISDN interworking, timebase recovery, FEC are made optional taking into account of network environments and application characteristics.

AVC-611*	[-]	Multimedia multiplex/AAL for audiovisual communication using WS
		(Japan)

This document presents a case study outcome for a class of application, audiovisual communication using work stations.  Considering the requirements of delay, efficiency, picture quality, it is concluded that a combination of PES and AAL 5 is the most desirable choice.

AVC-612	[-]	Terminal specifications for broadcasting including CATV (Japan)

This document discusses terminal specifications for the TV distribution services which are characterized by that the terminals are classified into CTV and HDTV classes, that the video data flow is one directional and that the decoded picture format will be restricted to the local format.

AVC-613*	[-]	Multimedia multiplex/AAL for broadcasting including CATV (Japan)

This document discusses an appropriate network adaptation for the TV distribution application.  Assuming that MPEG Systems TS is used for this type of service, a solution of TS packets mapped on some AAL with FEC is concluded.  It is also suggested that the network adaptation specifications may be classified according to the number of programs per TS or the bit rate.

AVC-614	[041]	bit_rate field in VBR operation (Japan)

This document intends to clarify the VBR operation in H.262|ISO/IEC 13818-2 based on the CD texts, raising the following questions; bit_rate values that can be written when vbv_delay = FFFF, wording for the bit_rate semantics, transport buffer size being not sufficient, and consideration of start-up delay for the multiplex buffer.  As to the bit_rate values in VBR, it is proposed to apply the same maximum values as those for CBR.

AVC-615	[044]	Comments for CD13818-2 | Draft Rec. H.262 (Japan)

Editorial improvements with suggested wording as well as editorial corrections to Video CD (WG11 N0659, AVC-600) are listed.

AVC-616*	[-]	Cell loss correction method with low processing delay (Japan)

A closed form of cell interleaving matrix is provided for VBR applications.  Its feature is that the user data can be transmitted in unit of 704 bytes.  Detailed comparison of performance between the agreed open forma and this closed form is tabled.

AVC-617*	[054]	Cell loss correction method in AAL for the transmission of MPEG 2 
		Transport packets (Japan)

A cell loss/bit error correction method is provided to facilitate TS packets delivery over ATM.  This method assembles 47 TS packets and add 2x47 bytes CRC and 2mx47 bytes RS parity, achieving alignment of TS packets and ATM cells, use of existing AAL 1 protocol and low delay.

AVC-618*	[-]	Issues related to the transmission of MPEG bitstreams over ATM
		(BT - UK)

To meet the urgent user requirement that MPEG-2 coded materials be delivered through ATM networks, three issues are raised which need solutions; common access point, support for MPEG timing, and an AAL for MPEG streams.  Some candidate solutions are discussed with conclusions that TS packets be the prime interface point and that the support of jitter compensation at each ATM node is impractical and thus a generalized AAL for real-time VBR transmission be pursued.

AVC-619	[-]	Some H.32X audiovisual terminal issues (Australian UVC consortium)

This document raises and discusses the following system aspect issues; 1) protocol configuration for the network adaptation, providing "Video and Audio CS", 2) PES multiplexing capacity and its relevance to H.22X functions when AAL is used and jitter compensation capability of AAL 1, 3) allocation of timebase recovery function to the "Video and Audio CS", 4) impacts of buffer location in the terminal on the rate control.

AVC-620	[-]	Draft skeleton text for H.22X (S. Dunstan)

A list of sections and key items is given for H.22X.  Some discussion items are also listed; definition of SAP at the application/H.22X boundary, inclusion of encryption function in H.22X, use of PES or PS as protocol, necessity of acknowledgment in H.22X procedures.

AVC-621	[-]	Recommendations on preparation of H.22x
		(IBM and AT&T Communications)

This document presents the T1A1 view regarding the relationship between MPEG-2 Systems and the network adaptation, which supports to accelerate the development of the network adaptation of audiovisual signals to ATM transport by possibly adding H.22X specific functions that are not part of MPEG-2 Systems.

AVC-622	[039]	Evolution of H.22x - Multimedia multiplex to include MPEG-2 systems 
		(IBM)

After a brief review of H.22x (multimedia multiplex in H.32x terminal equipment) and MPEG-2 status in Study Group 15, this paper suggests that Study Group 15 capitalize on the MPEG-2 Systems Layer as a common enabling technology for both multimedia conferencing and video distribution.  It concludes with a specific recommendation of adopting MPEG-2 systems as a fundamental component of H.22x.

AVC-623	[-]	Draft skeleton text for H.32X (C-C. Li)

A list of sections and key items is given for H.32X.

AVC-624	[-]	Draft skeleton text for H.32Y (S. Okubo)

A list of sections and key items is given for H.32Y including some questions.

AVC-625	[-]	Status report on the study of network adaptation (Rapporteur)

This status report summarizes the activities of the SG15 Experts Group on the study of network adaptation (projected Rec. H.22X "multimedia multiplex and synchronization") and audiovisual signal transport AAL.

AVC-626	[SC29 N710]	Belgian National Body comments on MPEG-2 CD's (BELGACOM)

This document lists comments to Systems and Video CD from Belgian National Body of SC29.

AVC-627	[-]	General approach to H.32z (UK)

After a review of audio coding, video coding, multiplexing, transmission and call set up signalling for LAN environments, it is concluded that the best approach is to provide the equivalence of ISDN transmission over the LANs and make the minimum of modifications to H.320.

AVC-628	[071]	Simulation of Phase-Locked Loop for Jittered PCR's (AT&T)

Simulation results are reported for the PCR recovery phase lock loop in terms of frequency error, frequency change step and phase error with parameters of initial frequency offset, initial phase offset, and peak-to-peak jitter.  The PCR rate and oscillator update rate are both set to 10 Hz.  The results show that the required extra buffering is 3 ms for timebase recovery plus 1 ms for accommodating the jitter, hence the timebase recovery in ATM environments is encouraging.  It is concluded that more contributions on the expected performance of networks and the needed purity of the recovered clock are required to allow design of an optimized PLL.

AVC-629	[-]	Status report on AAL1&2 for video signal support (K. Yamazaki, 
		Rapporteur for Q.6/13)

This status report summarizes the activities of SG13 on the study of AAL 1 and AAL 2 (Rec. I.363).

AVC-630	[-]	Inclusion of MPEG TS-layer with jitter compensation in H.22X
		(KPN, PTT Research - Netherlands)

Based on the discussion contained in AVC-606, the following is proposed; 1) to include the MPEG2 TS-layer in H.22X under the condition that the MPEG2 TS-layer shall handle timing jitter introduced by the network on an end-to-end basis, without time stamp correction in the network, 2) to study and specify jitter margins that clock recovery systems of H.22X shall meet and that shall be supported by the network on the User-Network Interface, 3) to liaise with ISO-MPEG to reach a common TS-layer for H.22X and other applications.

Temporary Documents

Number	Source	Title	
TD-1	Rapporteur	Agenda for the sole sessions	
TD-2	Rapporteur	Available documents for the Geneva/Paris meeting	
TD-3	Rapporteur	H-series audiovisual terminals in different network environments	
TD-4	Rapporteur	Correspondence on STC recovery in ATM environments	
TD-5	Rapporteur	Network adaptation functions and their allocation	
TD-6	Rapporteur	Memorandum on the outcome of the Geneva meeting	
TD-7	Rapporteur	Functions of network adaptation	
TD-8	AT&T	ATM network adaptation for MPEG-based audiovisual communication systems	
TD-9	S. Dunstan	Report of discussion on H.22X/AAL	
TD-10	Telia Research	Comparison of alternative ATM mappings for MPEG-2	
TD-11	S. Okubo, 
K. Yamazaki	Draft report of the joint meeting of SG13 AAL Type 1&2 Group and SG15 Experts Group for ATM Video Coding	
TD-12	Rapporteur	Effects of jitter in recovered timebase	
TD-13	Sun Micro.	MPEG System stream encapsulation in AAL5	
TD-14	K. Joseph	A rational ATM interface for AMS	
TD-15	T. Bruner and M. Schwartz	Proposed requirements for a real time transport service	
TD-16	S. Dunstan	Report of second discussion on H.22X/AAL	
TD-17	H. Radha	Performance parameter assumptions	
TD-18	D. Schinkel	List of correspondents	
TD-19	R. ter Horst	Draft input proposal for MPEG meeting 	
TD-20	Rapporteur	Draft meeting report for the sole sessions in Paris	

END