Annex 1 to AVC-743R

Documents for the Kamifukuoka meeting
(24-27 January 1995)

Normal Documents

AVC
 number	Pur-pose	
Title (Source)	
AVC-708R	R	Report of the seventeenth Experts Group meeting in Singapore(1-11 November 1994) - Part I and Part II (Rapporteur)	
AVC-708R	R	Report of the seventeenth Experts Group meeting in Singapore(1-11 November 1994) - Part III (Rapporteur)	
AVC-709	R	Response to Draft ITU-T Rec. H.222.0 | ISO/IEC 13818-comments (S. Dunstan)	
AVC-710	P	Draft H.24X (M. Nilsson)	
AVC-711	R	SG13 Report and Liaison Statement on AAL Matters (SG13 Rapporteurs for Q.6/13)	
AVC-712	R	Liaison Statement on ATM Network Performance ( SG13 Rapporteurs for Q.16/13)	
AVC-713	R	List of open issues towards the Kamifukuoka meeting (Rapporteur)	
AVC-714	D	LAN video standardization (AT&T)	
AVC-715	P	Draft H.222.1 (Editor, Stuart Dunstan)	
AVC-716	P	Draft H.32X (Editor, Chia-Chang Li)	
AVC-717	P	Draft H.32Y (Editor, Hayder Radha)	
AVC-718	P	Draft H.32Z (Editor, Geoff Morrison)	
AVC-719	P	Usage of ITU-T stream_id (Japan)	
AVC-720	P	Usage of program and program element descriptors (Japan)	
AVC-721	P	Protocol Stack for H.24X Negotiation Channel (Japan)	
AVC-722	P	Amendment to Capability Description in H.24X (Japan)	
AVC-723	D	Representation of transfer rate in broadband audiovisual communications (Japan)	
AVC-724	D	H.24X channel (Japan)	
AVC-725	D	C&I signals and their channels (Japan)	
AVC-726	D	Identification of H.32X, H.32Y and H.320 at the start of the call (Japan)	
AVC-727	I	Hardware Experiment on Bit Errors (Japan)	
AVC-728	D	Use of AAL5 for adapting narrow-band audiovisual terminals to broad-band ISDN environments (Japan)	
AVC-729	D	Comments on H.32Z (Japan)	
AVC-730	P	DSM-CC over ATM architectures and session descriptions (BNR)	
AVC-731	D	DSM-CC over ATM profiles for hybrid ATM/MPEG and full ATM architectures (BNR)	
AVC-732	P	Pretransmission of high priority information (AT&T)	
AVC-733	P	On the need for including frame numbers in transport stream packets (AT&T)	
AVC-734	P	Only P-frame coding for multipoint video (AT&T)	
AVC-735	I&P	Feedback of received jitter for RTD model (AT&T)	
AVC-736	D	Comments on the decision of H.222.1 TS PDU (KAIST)	
AVC-737	P	Q.2931 Signaling Enhancements to support Video-on-Demand (IBM)	
AVC-738	I	ATM Forum AMS Status (IBM)	
AVC-739	P	Proposal for H.222.1 acknowledged signalling procedures (Siemens)	
AVC-740	P	Use of new H.222.1 stream id (Siemens)	
AVC-741	P	An AAL for variable bit rate services (KPN, BT)	
AVC-742	I&P	H.222.1 issues (BT)	

Abstract

AVC-707R	Report of the seventeenth Experts Group meeting in Singapore (1-11 November 1994) - Part I and Part II (Rapporteur)

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

AVC-708R	Report of the seventeenth Experts Group meeting in Singapore (1-11 November 1994) - Part III (Rapporteur)

This document records the outcome of the Singapore joint sessions held in November 1994, covering Requirements, Video, Systems and DSM sub-groups

AVC-709	Response to Draft ITU-T Rec. H.222.0 | ISO/IEC 13818-comments (S. Dunstan)

This document reports the response of the Singapore meeting to ITU-T comments on Draft International Standard ISO/IEC 13818-1: Systems in AVC-688.  It also lists a number of editorial errors in IS which should be addressed.

AVC-710	Draft H.24X (M. Nilsson)

This document is a draft for the definition of terminal capabilities and their exchange procedures at the start of or during communication.  The capabilities are represented in ASN.1 notation.

AVC-711	SG13 Report and Liaison Statement on AAL Matters (SG13 Rapporteurs for Q.6/13)

This document contains the outcome of the SG13 meeting in November 1994 on the AAL1/2 matters.  It also includes a liaison response to SG15 and our original questions.

AVC-712	Liaison Statement on ATM Network Performance ( SG13 Rapporteurs for Q.16/13)

This document provides the SG13 comments on the network performance scenario as contained in AVC-635; the assumption is reasonable for CLR, pessimistic for BER and end-to-end delay, optimistic for CDV which is noted to be strongly dependent on bit rate.  There are also included several questions regarding required performance for video services.

AVC-713	List of open issues towards the Kamifukuoka meeting (Rapporteur)

This document lists open issues which were identified after the Singapore meeting.  They are classified into categories of “H.222.0, H.262”, "network adaptation", “C&I and DSM-CC” and Draft Recommendations “H.222.1”, “H.32X”, “H.32Y”, “H.32Z”, “H.24X”.

AVC-714	LAN video standardization (AT&T)

This document discusses the importance of incorporating non-guaranteed bandwidth LANs into H.32Z from interoperability point of view, or ITU-T’s role.  It also addresses some technical issues with a stress on end-to-end delay.  After listing two directions (to standardize the gateway interface and to standardize the gateway processing as well), this document suggests that the H.32Z effort be split into two parts; H.32Z.1 to focus on GBW LANs, and H.32Z.2 to focus on NGBW LANs, an associated H.22Z and H.24Z (it is noted that this might well be the same as H.24X, which will be used for ATM and PSTN).

AVC-715	Draft H.222.1 (Editor, Stuart Dunstan)
AVC-716	Draft H.32X (Editor, Chia-Chang Li)
AVC-717	Draft H.32Y (Editor, Hayder Radha)
AVC-718	Draft H.32Z (Editor, Geoff Morrison)

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

AVC-719	Usage of ITU-T stream_id (Japan)

This document lists two possible methods to use the four stream_id’s allocated to the ITU-T applications; 1) to make one-to-one correspondence between each stream_id of Type A - D and media, 2) to make the correspondence dynamic.  It compares the two methods with respect to demultiplexing, maximum number of streams to be dealt with, and media identification at the PES level.  As a conclusion, the first method is proposed as exemplified in the Annex where the first 4 bits are allocated for coding algorithm identifiers and the following 4 bits are allocated for stream numbers.  Usage of Type E is proposed to be reserved without clear applications at the moment.

AVC-720	Usage of program and program element descriptors (Japan)

This document proposes H.222.1 specifications on the decoder interpretation of program and program element descriptors for the receiver and a recommended coding method for the transmitter to guarantee interoperability among audiovisual terminals.  The recommended coding syntax forms a subset of the decodable set of syntax.

AVC-721	Protocol Stack for H.24X Negotiation Channel (Japan)

This document discusses three protocol stacks for the error free transport of H.24X signalling in terms of characteristics required for the H.24X signalling and functions provided by the protocol stack.  It suggests to choose X.224 class 0 on top of SSCF + SSCOP and AAL5, and proposes to seek advice of SG8 in the interest of harmonization with the T.120-series protocol stacks.

AVC-722	Amendment to Capability Description in H.24X (Japan)

This document proposes to improve the ASN.1 representation of the draft H.24X specifications (AVC-710) in three ways; 1) addition of top level definition , 2) use of tagging for OPTIONAL and CHOICE type elements, 3) use of BIT STRING type instead of BOOLEAN for capability indication.

AVC-723	Representation of transfer rate in broadband audiovisual communications (Japan)

This document discusses transfer related issues such as; 1) relationship between the value declared against the network and the value at AAL-SAP, 2) transfer rate value determined by the end-to-end negotiation and its relevance to AAL parameters in Q.2931, 3) representation of bit rate values for transfer rate capability.  As a conclusion, it is suggested to represent the transfer rate capability and the operational rate in 16 bit integer as the multiplier of 64 kbit/s.

AVC-724	H.24X channel (Japan)

This document compares two solutions to provide a channel for H.24X negotiation signals; 1) single solution where a VC is initially used for only H.24X signalling and subsequently expanded to accommodate audiovisual signals as well, 2) dedicated VC solution where a separate VC is used for H.24X signalling other than a VC for audiovisual signals.  Since the negotiation includes choice of AAL, H.222.1 multiplex and bit rate, the dedicated VC solution is supported because of its simplicity and flexibility.

AVC-725	C&I signals and their channels (Japan)

This document lists five different type of C&I signals for broadband audiovisual communication terminals; 0) video frame synchronous control signals, 1) video frame asynchronous H.24X capability information, 2) video frame asynchronous control and indication signals like H.230 ones, 3) video frame asynchronous DSM-CC signals, 4) video frame asynchronous mode change signals.  Then it discusses appropriate channels for each category and in what Recommendation each category be specified.

AVC-726	Identification of H.32X, H.32Y and H.320 at the start of the call (Japan)

This document analyzes interworking among H.32X, H.32Y and H.320 terminals at the call setup phase of communication, pointing out that a potential problem is in H.32X placing a call in the broadband proper mode of operation.  It provides three possible solutions; 1) inclusion of two or more operational modes in the setup message, 2) redialing if no response is obtained, 3) use of a priori knowledge.

AVC-727	Hardware Experiment on Bit Errors (Japan)

This document reports experimental results on visual impact of bit error on decoded pictures using an H.261 base HDTV codec.  Error rates of 10-3 - 10-8 have been tested, switching on/off RS(112,108) error correction.  It concludes that the results support the argument of AVC-657 that bit error correction is necessary even for the best case network performance scenario in AVC-635.  Processed pictures are demonstrated.

AVC-728	Use of AAL5 for adapting narrow-band audiovisual terminals to broad-band ISDN environments (Japan)

This document discusses H.320 adaptation to the ATM environments by using AAL5, where the received clock from the N-ISDN is used for transmitting the CBR signal in case of interworking, while an independent clock is used in case of communicating with another ATM terminal.  It raises that the Experts Group should urgently consider such terminal configuration and gateway functions.

AVC-729	Comments on H.32Z (Japan)

This document discusses the issue of guaranteed bandwidth vs. non-guaranteed bandwidth LAN’s for generating Recommendation H.32Z.  It suggests for H.32Z to require that ' H.32Z terminal + Gateway ' work as a 'virtual' H.320 terminal, not to specify whether LAN is guaranteed bandwidth and to describe the H.32Z terminal configuration and protocol for Iso-Ethernet as an example.

AVC-730	DSM-CC over ATM architectures and session descriptions (BNR)

This document identifies three potential architectures for operating MPEG DSM-CC over the ATM network; 1) hybrid ATM and MPEG switching of MPEG TS, 2) full ATM switching of MPEG TS with segregated Session Signaling, 3) full ATM switching of MPEG TS with integrated Session Signaling.  It proposes that the three architectures and the two session implementation descriptions be included in the meeting report for future reference.

AVC-731	DSM-CC over ATM profiles for hybrid ATM/MPEG and full ATM architectures (BNR)

This document identifies standards profiles for the three MPEG DSM-CC over ATM architectures; Hybrid ATM/MPEG, Full ATM with segregated Session Signaling and Full ATM integrated Session Signaling.  It discusses interpretations of H.32X, H.24X and H.222.1 for different DSM-CC over ATM architectures and urges SG15 to establish a work for harmonizing H.32X, H.24X and H.222.1 with DSM-CC for customer premise equipment compatibility and efficiency.

AVC-732	Pretransmission of high priority information (AT&T)

This document discusses the use of data partitioning in the network environments where different priorities are not supported, proposing that in such cases the HP information can be pre-transmitted using a reliable transport protocol and stored in the decoder's memory to be used during the real-time decoding when cell losses occur.  It lists several functionalities and corresponding syntax to achieve them.

AVC-733	On the need for including frame numbers in transport stream packets (AT&T)

This document proposes to include frame_sequence_counter in the Transport Stream adaptation field to facilitate the decoder recovering from moderately large packet losses , which may occur on conventional networks.

AVC-734	Only P-frame coding for multipoint video (AT&T)

This document proposes inclusion of a sequence level indicator for P-only coding to allow merging of multiple video streams with simple header manipulations so that the merged stream can be decoded by a regular decoder.

AVC-735	Feedback of received jitter for RTD model (AT&T)

This document proposes to optionally send information about the CDV, as estimated at the decoder, back to the encoder; which consists of three pieces of information an estimate of the received jitter, the available physical buffer size (once), and information about frames skipped due to decoder buffer underflow. Then the encoder can optionally adjust its coding to accommodate the CDV.  This alleviates the need for the decoder to be designed with enough buffering to prevent overflow and underflow given the maximum possible jitter, it also minimizes the delay.  

AVC-736	Comments on the decision of H.222.1 TS PDU (KAIST)

This document discusses overlapping fields of the MPEG-2 TS packet header and the ATM cell header towards obtaining high transmission efficiency.  It indicates a possible structure of H.222.1 TS PDU where sync-byte and PID are removed to accommodate H.222.1 specific functions.

AVC-737	Q.2931 Signaling Enhancements to support Video-on-Demand (IBM)

This document proposes that the VOD application information be exchanged during call setup using B_LLI information element,  that the H.222.1 information be coded in layer 2 protocol field in octet 6, and that the next two octets (6a and 6b) contain profile and selection request correlation ID.  It also proposes that this request be forwarded to SG11 through SG15.

AVC-738	ATM Forum AMS Status (IBM)

This document reports the outcome of the ATM Forum AMS group meeting in December 1994, highlighting the agreement to adopt the 1-N PCR aware AAL5 packing and a baselevel of N = 2 (5/8 cell PDUs) as the default PDU size to be supported.  Larger MTU size (>2) can be negotiated via signaling for SVC or network provisioning by PVCs.

AVC-739	Proposal for H.222.1 acknowledged signalling procedures (Siemens)

This document presents details of the terminal to terminal signalling using acknowledgment procedures for the set up and release of H.222.1 subchannels where PDUs are coded using PSM and PSI tables in the Program Stream and Transport Stream respectively and a descriptor identifies the meaning of the tables.  Proposed text for H.222.1 is contained in Annex to this document including SDL diagrams.

AVC-740	Use of new H.222.1 stream id (Siemens)

This document proposes that only one of the ITU-T Rec. H.222.1 type A-E stream_ids is required, with the first byte of the PES packet payload (labeled as stream_id_extension) being a multiplexing field.  It further proposes that the complete codespace in the stream_id_extension field be freely assignable.

AVC-741	An AAL for variable bit rate services (KPN, BT)

The document provides ETSI NA5 SAM's current progress on an AAL definition for variable bit rate services to assist SG15 in its development of an AAL for variable bit rate services.  It states three VBR service specific functions; 1) detection and recovery of lost or misinserted cells, 2) either correction of CDV introduced by the network or passing of CDV information to the next higher (application) layer, 3) bit rate recovery, and then lists two alternative positions for those functions; 1) AAL2 to be defined, 2) H.222.1 layer on top of AAL1 SAR with null CS or AAL5 SAR and CPCS with null SSCS.

AVC-742	H.222.1 issues (BT)

This document addresses bit error correction and timing recovery functionality in the network adaptation, proposing the following FEC block structure providing Reed Solomon FEC and jitter removal and timebase recovery functionality in the H.222.1 layer.
+-------------------------------------------------------------------+
|  RS  |       |          |             |             |  MPEG | RS  |
| Sync | Flags | <Length> | <Timestamp> | < BitRate > | PS/TS | FEC |
+-------------------------------------------------------------------+
|<---1 byte--->|<-1 byte->|<--2 bytes-->|<--2 bytes-->|       |<-4->|
|<---------------------------255 bytes----------------------------->|

Temporary Documents

TD-1	Rapporteur	Agenda for the Kamifukuoka meeting	
TD-2	Rapporteur	Available documents for the Kamifukuoka meeting	
TD-3	Rapporteur	Work plan after February 1995	
TD-4	S. Okubo	Observations regarding Draft Recommendations	
TD-5	ITU-T|ISO/IEC	Defect report procedure	
TD-6	S. Dunstan	Possible use of stream ids in H.222.1	
TD-7	LBC Group	Draft Recommendation H.24P - Version 3A	
TD-8	K. Yamazaki	Origin of CDV	
TD-9	D. Skran	PCWG press release	
TD-10	S. Dunstan	Report on network adaptation and Draft Rec. H.222.1, 24-25 January 1995	
TD-11	V. Balabanian	Terminal information exchange during call set-up	
TD-12	Secretariat	List of participants	
TD-13	S. Dunstan	Draft of H.222.1 following the Kamifukuoka meeting	
TD-14	Editorial Group on Draft H.24X	Actions to revise AVC-710	
TD-15	C-C. Li	Draft Recommendation H.32X	
TD-16	H. Radha	Draft Recommendation H.32Y	
TD-17	G. Morrison 	Draft Recommendation H.32Z.1	
TD-18	S. Dunstan	Update of H.32X network adaptation protocol reference model	
TD-19	K. Hibi	Consideration on H.24X protocol stack	
TD-20	K. Hibi	Draft correspondence to SG8 on multiple VCs and error free transport for H.24X	
TD-21	H. Radha	Response to a previous Liaison and request for comments	
TD-22	L. terHorst	Network adaptation and profiling for the broadband audiovisual communication systems and terminals	
TD-23	Rapporteur	Draft meeting report	

END