Annex 1 to AVC-673R

Documents for the Grimstad meeting
(13-22 March 1994)

Normal Documents

AVC number	MPEG number	Pur-pose	
Title (Source)	
AVC-631R	-	R	Report of the joint meeting with SG13 AAL 1&2 Group in Geneva (14 March 1994) and liaison statement from SG13 (Rapporteur)	
AVC-632R	-	R	Report of the fifteenth Experts Group meeting in Paris (16-25 March 1994) - Part I and Part II (Rapporteur)	
AVC-633R	-	R	Report of the fifteenth Experts Group meeting in Paris (16-25 March 1994) - Part III (Rapporteur)	
AVC-634	-	R	AAL1 circuit emulation (Rapporteur for Q.6/13, K. Yamazzaki)	
AVC-635	-	R	ATM performance assumptions (Experts Group)	
AVC-636	-	P	Consideration of loss priority between H.22X (Multimedia multiplex including MPEG-2 Systems) and AAL type 1/2 (Korea)	
AVC-637	-	I	IVS Baseline Document - March 1994 (SG13)	
AVC-638	-	R	Meeting report of WP1/15 (Chairman of WP1/15, M. Yamashita)	
AVC-639	-	R	Sixth progress report of The Experts Group for Video Coding And Systems in Atm and Other Network Environments (Rapporteur, S. Okubo)	
AVC-640	-	D	Correspondence between Rapporteurs for Q.8/10 (B. DeGrasse) and Q.2/15 (S. Okubo)	
AVC-641	-	D	Considerations for H.24X - Communication Procedures for Multimedia on ATM (Rapporteur for Q.3/15; N.D. Kenyon)	
AVC-642	94/166	I	Position paper on MPEG Systems and ATM (A. MacInnis, S. Okubo)	
AVC-643R	-	R	Report of the Systems Adhoc and WG11 meetings held in Atlanta (ITU-T EG Representatives; G. Franceschini, S. Okubo)	
AVC-644	N0721	R	Darft ITU-T Rec. H.222.0|ISO/IEC 13818-1 Systems (Editor)	
AVC-645	N0702	R	Darft ITU-T Rec. H.262|ISO/IEC 13818-2 Video (Editor)	
AVC-646	94/183	P	Increase of frame rate from 30 to 60 Hz in Main Level (ML) (NTR)	
AVC-647	94/253	P	Fast timing recovery in the presence of cell delay jitter (AT&T)	
AVC-648	-	P	Expanding the current scope of H.32Z (Tampere University of Technology, Bitfield)	
AVC-649	-	D	Real-Time Transport Protocol in H.32Z Systems in ATM and Other Packet-Switched Computer Networks (Tampere University of Technology)	
AVC-650	-	D	Technical Issues concerning Real-Time Protocol in H.32Z Systems n ATM and Other Packet-Switched Computer Networks (Tampere University of Technology, Bitfield)	
AVC-651	-	I	Report on preliminary experiments using H.320 codecs over ATM networks (BT)	
AVC-652	-	R	Report of the first meeting of the JCG on AVMMS (Chairman of JCG/AVMMS, M. Yamashita)	
AVC-653	-	P	Comments for Editor's notes in H.32Y draft recommendation (Japan)	
AVC-654	94/230	P	Editorial comments for Draft Rec. H.222.0 | ISO/IEC 13818-1 (Japan)	
AVC-655	94/225	P/D	Communication procedure for H.222.1 (Japan)	
AVC-656	94/214	P/D	Necessary provision for applying H.222.0 to the H.32X terminals (Japan)	
AVC-657	-	D	Consideration on error correction functionality in H.222/AAL (Japan)	
AVC-658	-	I	A study of the H.22X interaction with the AAL for the ATM transmission of TS packets (Japan)	
AVC-659	-	I	A plan of H.32X hardware interconnection experiment in Japan (Japan)	
AVC-660	-	P	Darft H.22X (Editor, Stuart Dunstan)	
AVC-661	-	P	Draft H.32X (Editor, Chia-Chang Li)	
AVC-662	-	P	Draft H.32Y (Editor, Sakae Okubo)	
AVC-663	-	P	Draft H.32Z (Editro, Geoff Morrison)	
AVC-664	94/254	I/D	Multiplex at ATM layer with H.222 (KPN-PTT)	
AVC number	MPEG number	Pur-pose	
Title (Source)	
AVC-665	94/220	P	Closed caption in ITU-T H.262|ISO 13818-2 (Bellcore)	
AVC-666	-	D/P	H.32X Communication Modes, Terminal Types, and Interwroking Scenarios between H.32X Terminals (AT&T)	
AVC-667	-	D/P	Inter-operability between B-ISDN H.32X and N-ISDN H.320 Terminals (AT&T)	
AVC-668	-	D/P	Video Conferencing Control and Indication Signals for H.262 (AT&T)	
AVC-669	94/228	I	ITU-T Approval of Common Text Recommendations | International Standards (Rapporteur)	
AVC-670	94/227	I	Patent Statements and Information for Draft ITU-T Rec. H.262 | ISO/IEC 13818-2 (Rapporteur)	
AVC-671	-	P	Considerations for H.32Z Endpoints (AT&T)	
AVC-672	-	I	Cell Delay Variation (CDV) in ATM Networks (AT&T)	

Abstract

[nnn] indicates MPEG Document Number.

AVC-631R	[-]	Report of the joint meeting with SG13 AAL 1&2 Group in Geneva (14 
		March 1994) and liaison statement from SG13 (Rapporteur)

This document contains a report of the joint discussion by the experts of SG13 AAL1&2 and SG15 ATM video coding and systems which took place on March 14, 1994.  It also contains SG13 liaison statements to SG15, SG9 and MPEG on video signal transport in ATM networks.

AVC-632R	[-]	Report of the fifteenth Experts Group meeting in Paris (16-25 March 
		1994) - Part I and Part II (Rapporteur)

This document records the outcome of the Paris sole sessions held in March 1994, summarizing the discussion and identifying action items.

AVC-633R	[-]	Report of the fifteenth Experts Group meeting in Paris (16-25 March 
		1994) - Part III (Rapporteur)

This document records the outcome of the Paris joint sessions held in March 1994, covering Requirements, Video and Systems sub-groups.

AVC-634	[-]	AAL1 circuit emulation (Rapporteur for Q.6/13, K. Yamazzaki)

Clarification is given to "circuit emulation" which was raised at the Paris meeting (§6.4/AVC-632R) in terms of circuit transport Vs video signal transport.  Services provided by N-UNI,  B-UNI, Interworking Function and TA are also clarified.

AVC-635	[-]	ATM performance assumptions (Experts Group)

Best available information on ATM performance assumptions are tabulated for the worst, average case and worst case of CLR, BER, end-to-end delay, CDV etc.  This information is intended to assist the network adaptation study as decided at the Paris meeting (§8.2.2/AVC-632R).

AVC-636	[-]	Consideration of loss priority between H.22X (Multimedia multiplex 
		including MPEG-2 Systems) and AAL type 1/2 (Korea)

This document proposes to define a priority primitive between H.22X and AAL Type1/2 for the MPEG-2 Transport Streams with transport_priority.  This priority primitive is mapped onto CLP bit in the ATM layer.

AVC-637	[-]	IVS Baseline Document - March 1994 (SG13)

This is the final version of the IVS Baseline document which has served to provide a common basis for the ongoing study of IVS by SG13 and other groups.  It describes objectives, responsibility of each group, range of services to be covered and staged approach for evolution of service integration.  It also includes several annexes to overview the current status of the study on both of network and service aspects.

AVC-638	[-]	Meeting report of WP1/15 (Chairman of WP1/15, M. Yamashita)

This is the Chairman's report of the Working Party 1/15 meeting held in May 1994.  Materials related to broadband audiovisual matters are either attached to this document or issued as separate AVC-numbered documents (AVC-636,639,640).

AVC-639	[-]	Sixth progress report of The Experts Group for Video Coding And 
		Systems in Atm and Other Network Environments (Rapporteur, S. 
		Okubo)

This document provides a progress report to Working Party 1/15, which covers the two meetings of the Experts Group (October-November 1993 and March 1994) and summarizes major achievements toward defining H.262, H.22X, H.32X/Y/Z.  It also lists particular items which need consideration of WP1/15; 1) intellectual property processing for H.262, 2) commitment in hardware trials, 3) advice on open issued for Draft Recommendations, 4) Common Text approach to MPEG-2 Systems, 5) DSM-CC activities in MPEG, 6) editorial corrections to H.262, 7) guideline for the interaction with The ATM Forum, 8) initiation of H.24X work.

AVC-640	[-]	Correspondence between Rapporteurs for Q.8/10 (B. DeGrasse) and 
		Q.2/15 (S. Okubo)

SG8 comments on the H.32X protocol model that use of different AAL thus different VC is more appropriate for exchange of telematic information and high-level audio-video control.  Views of SG15 are also provided which was generated during its May 1994 meeting.

AVC-641	[-]	Considerations for H.24X - Communication Procedures for Multimedia 
		on ATM (Rapporteur for Q.3/15; N.D. Kenyon)

Rapporteur for Q.3/15 provides some hints on the communication procedures for the broadband audiovisual/multimedia terminal, reflecting the lessons obtained through the development of H.242 for the N-ISDN terminal.  Possible extensions to the H.242 procedures are; 1) capabilities to encode, 2) no need for indication of multiplex structure this time, 3) expression of mode preference from the receiving end, 4) integration of outband and inband procedures, 5) handling of ATM fault conditions, 6) unified handling of data, 7) consideration of multipoint from the outset, 8) interworking with ISDN and PSTN multimedia terminals as a mandatory requirement, 9) physical channel for control, 10) choice of control protocol harmonized with other applications.

AVC-642	[94/166]	Position paper on MPEG Systems and ATM (A. MacInnis, S. Okubo)

This document intends to clarify the relationship between the MPEG Systems and ATM with their overviews and techniques to cope with particular characteristics of ATM - cell delay variation.  It is shown that cell delay variation of the network can be reduced by either of the network specific solution or the integrated decoder solution.

AVC-643R	[-]	Report of the Systems Adhoc and WG11 meetings held in Atlanta 
		(ITU-T EG Representatives; G. Franceschini, S. Okubo)

The outcome of the Atlanta meetings of the Adhoc Group and WG11 is reported with focus on the ATM related organizational and technical matters.

AVC-644	[N0721]	Darft ITU-T Rec. H.222.0|ISO/IEC 13818-1 Systems (Editor)

This draft was produced at the MPEG meeting in Atlanta for DIS balloting.

AVC-645	[N0702]	Darft ITU-T Rec. H.262|ISO/IEC 13818-2 Video (Editor)

This draft was produced at the joint meeting in Paris for DIS balloting.

AVC-646	[94/183]	Increase of frame rate from 30 to 60 Hz in Main Level (ML) (NTR)

To allow low bitrate and high temporal resolution applications and low delay applications requiring high temporal resolutions within the resource for the current Main Level decoder, increase of frame rate bound from 30 to 60 is proposed.  Newly covered formats include (720x288x50), (360x288x50), (480x240x60), (544x288x50), etc.

AVC-647	[94/253]	Fast timing recovery in the presence of cell delay jitter (AT&T) 

This document presents a method of speeding up the timebase recovery where arrival time of each cell is monitored and compared with estimated arrival time which is computed from the values of program_mux_rate (in case of PS) or piecewise_rate (in case of TS) and the encoder clock reference (SCR or PCR) and adjusted for the effect of packing the clock reference information into cell, then the arrival jitter is fed back to the timebase recovery PLO.

AVC-648	[-]	Expanding the current scope of H.32Z (Tampere University of 
		Technology, Bitfield)

This document proposes a framework of H.32Z which consists of; 1) use of the word "Packet Switched Computer Network (PSCN)" instead of "LAN", 2) use of Real Time Protocol (RTP) in PSCN, 3) support of the best effort computer networks in addition to the guaranteed bandwidth networks, 4) non-use of H.221/H.22X in PSCN connections, they are removed/regenerated at the PSCN-ISDN gateway, 5) adoption of RTP as ITU-T Recommendation H.22Z.

AVC-649	[-]	Real-Time Transport Protocol in H.32Z Systems in ATM and Other 
		Packet-Switched Computer Networks (Tampere University of 
		Technology)

This document provides supporting material to the proposal in AVC-648; 1) overview and status of RTP, 2) timing model without bandwidth reservation, 3) packet routing in PSCN, 4) multicast addresses for data transportation.  As a conclusion, it is argued that installed base of computers be used for audiovisual service even if its quality may be slightly worse than the one obtained through the guaranteed bandwidth network.

AVC-650	[-]	Technical Issues concerning Real-Time Protocol in H.32Z Systems n 
		ATM and Other Packet-Switched Computer Networks (Tampere 
		University of Technology, Bitfield)

This document addresses several aspects of the RTP use in PSCN environments as support of the proposed framework in AVC-648; 1) ISDN-PSCN interworking, 2) ISDN and PSCN address conversion, 3) mapping of H.320 on RTP, 4) mapping of RTP on PSCN.

AVC-651	[-]	Report on preliminary experiments using H.320 codecs over ATM 
		networks (BT)

This document reports on connecting existing H.320 terminals between Ipswich and London through an ATM Virtual Path where AAL1 adaptation is carried out between G.703/704 2 Mbit/s connection and the ATM switch.  Adaptive clock method is employed and 3 Mbit/s ATM channels are used not to invoke policing.  It is concluded that the quality of link and coded pictures is very good.

AVC-652	[-]	Report of the first meeting of the JCG on AVMMS (Chairman of 
		JCG/AVMMS, M. Yamashita)

This meeting was represented by SGs 1,3,7,8,9,11,12 and 15.  Among other things, Questions and work plans of relevant SGs, relationship with organizations outside of ITU-T, study of Interactive Multimedia Services, profiling multimedia services were discussed.

AVC-653	[-]	Comments for Editor's notes in H.32Y draft recommendation (Japan)

This document provides replies to some of the editor's questions, particularly to the questions of AAL1 parameters, error handling and call control.

AVC-654	[94/230]	Editorial comments for Draft Rec. H.222.0 | ISO/IEC 13818-1 (Japan)

Comments of editorial nature are given to the DIS version of "Systems" specifications. (AVC-644).

AVC-655	[94/225]	Communication procedure for H.222.1 (Japan)

This document discusses communication control procedures which handle negotiation at the beginning of communication and mode switching during communication.  It also lists items to be negotiated and  C&I signals for audiovisual communications.  Since a dedicated control channel is required, assignment of PID (for TS) and stream_id in the PES header is proposed.  Furthermore, an outline of communication procedure is illustrated for further discussion.  For distinction of PS and TS as a multiplex method, us of LLC/HLC in the outband and sending a liaison statement to SG11/13 is suggested.  Finally, necessary study for setting up a bi-directional control channel for asymmetric communication is raised.

AVC-656	[94/214]	Necessary provision for applying H.222.0 to the H.32X terminals 
		(Japan)

This document proposes new entries to the definition of elementary streams, stream_id in the PES header, stream_type in Program Stream Map and Program Map Table, descriptor_tag in the stream descriptors in H.222.0 to accommodate ITU-T audio/video/data/control channels.  It also discusses dynamic mode changes during transmission whose indication should be synchronous with the mode change.  Use of data_alignment_indicator together with the PSM/PMT descriptors is proposed; this is also applicable to video frame synchronous C&I.  For this purpose, a new entry to the audio_data_stream_alignment is proposed.  Finally, this document points out a packetizing delay management problem involved in the low bit rate ITU-T audio coding.

AVC-657	[-]	Consideration on error correction functionality in H.222/AAL (Japan)

This document discusses necessity of bit error/cell loss correction against the network performance assumptions given in AVC-635.  For a 6 Mbit/s user information bit rate, it is concluded from the calculation of mean error free time that bit error correction is necessary for all the scenarios while cell loss correction becomes necessary only for the worst case scenario.  Several error correction alternatives are illustrated; 1) use of the short interleaver in AAL1, 2) FEC in the H.222.1 specific layer with/without its own framing header, 3) FEC for the TS packet in H.222.1 specific layer/AAL2 with/without alignment with cell boundaries, 4) interleaver for 47 TS packets in AAL2.  It is also argued that error detection in AAL5 and bit error correction in a higher layer do not match well.

AVC-658	[-]	A study of the H.22X interaction with the AAL for the ATM 
		transmission of TS packets (Japan)

This documents provides two examples of primitive parameters to be defined between the H.22X and AAL when TS packets are delivered through the ATM network; one for modified AAL1 where every TS packet is mapped onto 4 ATM cells, the other for AAL5 where 2 TS packets are mapped onto 8 ATM cells.  Support of packet priority and error indication are considered.

AVC-659	[-]	A plan of H.32X hardware interconnection experiment in Japan (Japan)

This document provides for information on a Japan plan of H.32X hardware verification testing which is going to be carried out mid 1995.  It describes objectives, time schedule, testing environments, test items as well as several points which should be decided to specify the experimental hardware.

AVC-660	[-]	Darft H.22X (Editor, Stuart Dunstan)
AVC-661	[-]	Draft H.32X (Editor, Chia-Chang Li)
AVC-662	[-]	Draft H.32Y (Editor, Sakae Okubo)
AVC-663	[-]	Draft H.32Z (Editro, Geoff Morrison)

These documents contain drafts which reflect discussion at the Paris meeting and subsequent correspondence.  Many open issues are indicated in form of editor's comments.

AVC-664	[94/254]	Multiplex at ATM layer with H.222 (KPN-PTT)

This document discusses use of multiple VCs for different elementary streams in a program or different programs in a TS.  Specific requirements for H.222.1 to support this are; 1) combining the data from different VC's into a logical valid TS or PS for the target H.222.0 decoder, 2) compensation of the transmission delay differences between the VC's, 3) reduction of cell delay variations between the VC's to a jitter that is acceptable for the target H.222.0 decoder.  As a conclusion, it is suggested to define a conformance point at the H.222.1/AAL service boundary for this multiple VC configuration.

AVC-665	[94/220]	Closed caption in ITU-T H.262|ISO 13818-2 (Bellcore)

This document proposes to standardize a mechanism to carry closed caption information which is tightly synchronized with the picture data.  The specifications should include location, (de)cipher and other necessary elements.  As to the location, use of the user_data in the picture header of ITU-T Rec. H.262|ISO/IEC 13818-2 is proposed as is done in the Grand Alliance HDTV approach.

AVC-666	[-]	H.32X Communication Modes, Terminal Types, and Interwroking 
		Scenarios between H.32X Terminals (AT&T)

This document provides a framework for the work on H.32X communication modes which consist of Video Codec Capability (VCC), Audio Codec Capability (ACC), and Network Adaptation Capability (NAC) with distinction between the transmit end (TE) and receive end (RE) characteristics.  It also provides a strawman proposal for H.32X communication modes, terminal types and interworking scenarios which are based on the discussion in AVC-608,610,612; Types A,B,C are defined according to the picture format class (CIF, 601, HDTV).

AVC-667	[-]	Inter-operability between B-ISDN H.32X and N-ISDN H.320 
		Terminals (AT&T)

H.32X support of H.320 capabilities are discussed and the following is proposed among other things; 1) at minimum two Service Channels, namely transfer rate up to 2x64 kbit/s, 2x384 kbit/s, 1920 kbit/s and their restricted network versions, 2) audio coding of G.711, G.722 and G.728, 3) H.261 with CIF and QCIF formats and 1/29.97 minimum Picture Interval, 4) LSD channel.  The conclusion is tabulated with indication of "Mandatory" or "Optional' for all the H.320 capabilities.

AVC-668	[-]	Video Conferencing Control and Indication Signals for H.262 (AT&T)

This document proposes that we pay a special attention to the transmission of C&I signals which are tightly coupled with the video pictures.  Four alternative transmission methods are provided for urgent consideration; 1) a separate (logical) channel, 2) user_data or extension_data within the H.262 video sequence header, 3) PES_extension field within the PES packet header, 4) extra_information_picture field of the H.262 picture header.

AVC-669	[94/228]	ITU-T Approval of Common Text Recommendations | International 
		Standards (Rapporteur,

The ITU-T approval process till the publication of the common text MPEG-2 standards (ITU-T Rec. H.222.0|ISO/IEC 13818-1 and ITU-T Rec. H.262|ISO/IEC 13818-2) is tabulated.  Requests for cooperation are also described; handling of comments to the DIS version, facilitating to make delta documents for the February 1995 meeting of SG15 and collection of patent statements and information.

AVC-670	[94/227]	Patent Statements and Information for Draft ITU-T Rec. H.262 | 
		ISO/IEC 13818-2 (Rapporteur)

This document summarizes the submission of patent licensing policy statements and information on relevant patens by the patent holders.  As a conclusion, cooperation of the ITU-T and ISO/IEC JTC1 members are appreciated and further cooperation 

AVC-671	[-]	Considerations for H.32Z Endpoints (AT&T)

Noting that non-guaranteed bandwidth LANs are critical to the success of H.32Z, the following is suggested; 1) splitting H.32Z into two parts - one for guaranteed bandwidth LANs, the other for non-guaranteed bandwidth LANs, 2) use of RTP from the IETF for the latter part of H.32Z.

AVC-672	[-]	Cell Delay Variation (CDV) in ATM Networks (AT&T)

This document (1) emphasizes the standardized CDV parameter in ITU-T Recommendation I.356, (2) summarizes work for CDV characteristics to date, (3) comments on the independence of delay between successive links in an end-to-end connection, and (4) presents some preliminary simulation results on the delay characterization in ATM networks.  It is concluded that a value of equal to 350 service times (service time = cell transmission time) as the 10-10 th quantile point of the delay distribution is anticipated for a maximum of 20 switches, muxes and cross connects, giving a CDV of 0.96 milliseconds for 156 Mbit/s trunks.

Temporary Documents

TD-1	Rapporteur	Agenda for the sole sessions	
TD-2	Rapporteur	Available documents for the Grimstad meeting	
TD-3	G. Franceschini	E-mail regarding VBR	
TD-4	G. Franceschini	Support of VBR Real Tome services in the AAL	
TD-5	Rapporteur	Draft summary of discussion on Wednesday	
TD-6	SG8	Liaison statement to Study Group 15 (Q.2/15) on B-ISDN audiographic and audiovisual conferencing on ATM	
TD-7	AVC Experts Group	Support of ITU-T Control and Indication Signals	
TD-8	H. Radha	Summary of H.32Y discussion and H.320/H.32X interoperability issues	
TD-9	G. Morrison	Excerpt from IEEE 802.9a Draft Standard	
TD-10	S. Dunstan	Summary of discussion on "H.22X and H.222.0", item 5 of TD1	
TD-11	Rapporteur	Draft report of the sole sessions in Grimstad	

END