Report of CJK 9th NGN-WG Meeting
April 10, 2007
1. Opening of the meeting
The 9th CJK NGN-WG meeting was held at Jeju, Korea on April 9 and 10, 2007. We
had a participation of 29 from CCSA (7), TTC(7), and TTA(15). It was chaired by Mr.
Taesang CHOI of TTA, with Ms. Duo LIU of CCSA and Mr. Naotaka MORITA of
TTC as vice chair persons.
2. Approval of the Agenda
The agenda given by CJK_NGN_9_001r1 was approved.
3. Document list and allocation
Annex A to the meeting report shows the document list and its arrangement at this
meeting. All documents are available at the web site below.
4. Status Report of ITU-T FG IPTV Ad-hoc Group
CJK_NGN_9_017: Activities of CJK Editing Team for FG-IPTV
Mr. Imanaka (TTC) summarized the achievement of CJK editing activities on IPTV
documents so far. He also proposed a table that shows which Questions and SGs
should be assigned for FG IPTV deliverables for creating subsequent
Recommendations. The meeting well recognized its purpose with modifications and
agreed the following:
1) If joint contributions are ready before the meeting, the meeting supports to submit
them to FG IPTV meeting in May
2) For the assignment mapping table, submit it as a preliminary material to IPTV JCA
for further discussion. The modified mapping table is attached in Annex B.
3) For July meeting contribution preparation, the meeting agreed to continue the
discussion on a e-mail reflector of the IPTV Ad-hoc group
Regarding the IPTV architecture, CCSA informed their ongoing activity how to
harmonized two functional architectures for IPTV, which are currently on the table.
5. Technical Discussions on IPTV Issues
CJK_NGN_9_005: Multimedia Multicast Session Management Web Service
Mr. Kum (TTA) proposed initiating a study on “Multimedia Multicast Session
Management Web Service”, which allows for a third party to control a multicast
session, its members, and channel presence information via open interface based on
web service. He illustrated several interesting example services such as community
TV, scheduled T-Learning, Caller-ID on TV, etc. It can be useful for IPTV value added
service providers and mobile IPTV service providers. There were good discussions
regarding the relationship between the proposal and the NGN and IPTV architecture.
After lengthy discussion, the meeting recognized Mr. Kum’s proposal and other’s
opinions to be a basis for further investigation on this issue.
CJK_NGN_9_015: Mobile IPTV over wireless networks in NGN
Mr. Park (TTA) described his intention to propose establishing a new question on
mobile IPTV over wireless networks for NGN in ITU-T SG13 and seek the support
from the CJK members. Discussions on the scope of the proposed work and its
relationship with the existing mobility work in the ITU-T SGs such as SG19 were
made. After extensive discussion, the meeting generally agreed the importance of the
work and there were no particular objections to the proposal of establishing a new
question dealing with the identified issues. The meeting suggested that the analysis of
the possible gaps or missing capabilities would be helpful to identify and initiate
specific study items.
CJK_NGN_9_010: Questions of NGN Release documents
Ms. Liu (CCSA) presented various issues and questions regarding NGN Release2
capabilities and their scope, the complexity of R1 FRA and its relationship with R2
FRA, the speed of NGN protocol standards development, and the progression of R2
documents. She asked NGN-WG members, especially SG13 management team
members, to provide their view on this. Mr. Morita (TTC) and Mr. LEE (TTA) who are
the vice chairmen of the SG13 gave their opinions regarding these questions as
The scope of R2 includes the mobility and streaming services
Which documents belong to R1 or R2 will be clarified at the end of this study
The FRA document is the base of further architecture documents. New
architecture documents could be developed separately and also could be possible
to modify the current FRA document if some new FEs are general.
The speed of signaling protocols development is not satisfactory, so the new
structure of next period is very important for coordinating the different stages
ranging from requirements to signaling.
Each document and contribution should propose the future work to be done
clearly such as stage 1, stage2, or stage3.
There may be two more NGN-GSI meetings and at least one is together with
Working Party meetings in order to consent some documents after the next
January SG13 plenary meeting
The meeting agreed that the next study period issue should be discussed among CJK,
such as study areas, structure, and working methods.
CJK_NGN_9_004: Clarification for IPTV functions
Mr. Kim (TTA) analyzed functional architectures of NGN and IPTV. He proposed that
IPTV Functions should be aligned with NGN functions which enable to build a single
service platform to cover multiple services. The effort was appreciated by the meeting.
Further discussion and coordination will be continued via e-mail discussion within FG
CJK_NGN_9_012: The discussion IPTV works in the ITU-T SG13
Mr. Xu (CCSA) raised an issue about the interaction of NACF with application support
functions and service support functions. The meeting noted for the importance of the
proposed issue and agreed to take it to be a basis for further investigation. The meeting
suggested referring to the relevant SDO’s documents for a starting point.
CJK_NGN_9_003: WG4 output documents with related document in the last
CJK NGN meeting
Ms. Liu (CCSA) described issues and suggestion on the alignment between two
working documents in FG IPTV WG4 for the consistency. The meeting clearly
recognized the issue and expected to be solved by the close collaboration among
relevant experts. Some remarks were made that the discussion should be done in a
productive manner and respect agreements once they were reached. Cooperation sprit
was well taken by the relevant experts.
CJK_NGN_9_002, 016, 018: Proposal of Extension for FG IPTV Activities
Ms. Liu (CCSA) and Mr. Imanaka (TTC) proposed cooperation of the extension of
FG-IPTV activity which was proposed to ITU-T SG13 meeting in April and in IPTV
JCA to progress the ongoing work. The proposals were the result of extensive e-mail
discussion before the meeting. The meeting unanimously agreed the proposal.
6. Joint Session between NGN-WG & N-ID-WG for USN Issue
N-ID_9_007: A standardization initiative on Ubiquitous Sensor Network
During the management team meeting before the NGN-WG meeting, NGN-WG and
N-ID WG agreed to have a joint meeting on USN issue due to the common interest.
During this meeting, Mr. Kim (TTA) presented various USN issues which include
major technical aspects such as USN management, QoS, accounting and billing,
security, directory service, etc. There were extensive discussions on various aspects of
the proposal. Due to the nature of overlapping issues, the meeting agreed to proceed
this study by both NGN and N-ID WGs jointly. Contributions are invited on this topic.
7. Technical Discussions on Multicast Issues
CJK_NGN_9_012: Proposal for initiating new NGN Work on Multicast
Mr. Lee (TTA) presented the proposal for initiating a new work on multicast
architecture including multicast capability in NGN service stratum on behalf of the
contributor. The proposal was submitted as a contribution to ITU-T SG13 meeting in
April. There were lengthy discussions on the relationship between the proposal and
transport multicast. Since the contributor was absent, clarifications were requested
such as consistency with transport multicast and its service assumed. The meeting
agreed to discuss it further at the CJK NGN-WG ad-hoc meeting on April 15 in
8. Technical Discussions on CJK NGN Test-bed Issues
CJK_NGN_9_007 and 008: Status Report and Proposal for Next Steps of Test-bed
Activities from CCSA
Ms. Zhang (CCSA) introduced the successful results of the first phase of the CJK test-
bed activity. Scenarios 2 and 4 were performed. Before going into the next step, she
asked the confirmation of the necessity of remaining test scenarios and possible
priority of the scenarios.
CJK_NGN_9_020: Status Report and Next Steps of Test-bed Activities from TTA
Mr. Choi (TTA) showed some examples of detailed test results and also proposed next
steps on the testing activities.
SDOs currently involved in the test will further discuss the next testing scenarios,
testing items, and specific testing schedules through e-mail discussions. The current
testing is based on the Call Server model, however, the meeting also recognized the
interest of IMS-based testing by all SDOs and encourage them to bring their decisions
on the possibility of joining the testing by the next CJK NNG-WG meeting.
CJK_NGN_9_014: Proposal for CJK NGN IPTV Testbed Setup
Mr. Hwang (TTA) introduced their activities on IPTV testing and proposed to setup
testing collaboration over the CJK NGN test-bed. The meeting recognized the
importance of the testing but some clarifications were requested regarding the
schedule, the scope of working items, the rationale of international IPTV testing, and
some other technical issues such as the meaning of SIP-based IPTV. The proposal was
appreciated by the meeting. The meeting generally agreed to consider further on the
issue and suggested to bring contributions incorporating the comments made to future
9. Technical Discussions on Beyond NGN Release 1 Issues
CJK_NGN_9_011: The Candidate of the NGN FPBN – PTDN (Public Telcom
Data Network ）
Mr. Xu (CCSA) presented information about NGN Future Packet Based Network –
Public Telecommunications Data Network. This presentation was made as a follow-up
of the previous meeting request. Clarifications on some issues such as the meaning of
universal network edge providing separation of Internal Network” from “External
Network” and comprehensive specification of major interfaces were made. The
meeting appreciated for information and agreed to study further on the issue inside
CJK. More contributions are also invited.
CJK_NGN_9_013: IPv6 based NGN
Mr. Park (TTA) presented the objectives, definition, scope, requirements, functional
architecture, and relationship with other networks of IPv6 based NGN. He also
emphasized that the study direction was slightly modified from “Impacts of IPv6 into
NGN” to “IPv6 based NGN” for the sake of easier understanding. According to the
request from TTA, the meeting agreed to treat the issue identified by the contribution
as a major item to be discussed in CJK NGN-WG ad-hoc meeting on April 15 in
CJK_NGN_9_021: Current situation of standardization study in Japan
Mr. Imanaka (TTC) provided the latest information of standardization activities in
Japan including a new structure to promote home networking study. The meeting
appreciated the provided information.
10. Discussions on CJK Cooperation and Position on the Mission of the SG13
Next Study Period
CJK_NGN_9_023: Proposal regarding upgrade of CJK capabilities
Mr. Lee (TTA) proposed a working method to improve in standard activity of CJK.
The main proposal was to produce white papers as working document of our
cooperation efforts for the CJK internal use only. He also proposed some initial study
items. The meeting agreed the proposal in principle. In terms of the study item
selection the meeting recommended to discuss it further over e-mail reflector which
will be lead by Mr. Lee. The decisions are planned to be made by the next CJK NGN-
During the discussion, it was also recognized that other SDO’s were seeking synergy
effect to create common IMS, which may have influence to CJK NGN activity. The
meeting agreed to have further consideration among CJK.
CJK_NGN_9_009: SG13 mission for the next study period
Mr. Lee (TTA) presented a proposal to SG13 meeting in April. It encouraged
consideration of the mission of SG13. It proposed introduction of a new phrase to
express the vision of the next study period, i.e., “Next Generation Ubiquitous
Networking”. The meeting appreciated the input and agreed to start the creation of the
mission statement based on the proposal.
11. New Management Team
From the next meeting, the following new management team was agreed.
Chair person: Naotaka MORITA of TTC
Vice chair person: Heyuan XU of CCSA
Vice chair person: Taesang CHOI of TTA
12. Future meeting plan
Regarding ad hoc level, the next NGN-WG ad-hoc meeting will be held at ITU-T
building in Geneva, from 9:00 to 12:00 on Sunday, April 15th of 2007 chaired by Mr.
Naotaka MORITA (to be confirmed). The second ad hoc may take place depending on
the results of the first ad hoc in Geneva. From TTC, contributions 28, 82, 83 and 84
were proposed to be discussed.
IPTV ad-hoc meeting will be held at Bled, Slovenia before the next FG IPTV meeting.
Regarding the WG level, the 10th NGN-WG meeting will be held hosted by CCSA in
China on 17th 19th October 2007. Confirmation should be made with FGIPTV
The 11th NGN-WG meeting will be held hosted by TTC in Japan, in Spring 2008. It
may be in conjunction with CJK plenary.
13. Closure of the meeting
The chairman gave his thanks to all participants. Thanks a lot to contributors and the
leaders on each group. And special thanks to TTA for its excellent local arrangements.
Annex A. The 9th CJK NGN WG Meeting Documents
N DOCUME SOURC DESCRIPTION FILE
O NT E
1 001 TTA Draft Agenda CJK_NGN_9_001
2 002 CCSA FG IPTV proposal CJK_NGN_9_002
3 003 CCSA WG4 output documents CJK_NGN_9_003
4 004 TTA Clarification for IPTV Functions CJK_NGN_9_004
5 005 TTA Multimedia Multicast Session Management Web Service CJK_NGN_9_005
6 006 TTA Mobile IPTV and Wireless Implication for NGN CJK_NGN_9_006
7 007 CCSA Status Report of Test-bed from CCSA CJK_NGN_9_007
8 008 CCSA Feasibility Analysis and Proposal for next phases test CJK_NGN_9_008
9 009 TTA SG13 mission for the next study period CJK_NGN_9_009
10 010 CCSA Questions of NGN Release documents CJK_NGN_9_010
11 011 CCSA The Candidate of the NGN FPBN——PTDN（Public CJK_NGN_9_011
Telcom Data Network）
12 012 CCSA The discussion IPTV works in the ITU-T SG13 CJK_NGN_9_012
13 013 TTA IPv6 based NGN CJK_NGN_9_013
14 014 TTA Proposal for CJK NGN IPTV Testbed Setup CJK_NGN_9_014
15 015 TTA Mobile IPTV over Wireless Networks in NGN CJK_NGN_9_015
16 016 TTC Proposal of cooperation for FG-IPTV extension in SG13 CJK_NGN_9_016
17 017 TTC Activities of CJK editing team for FG-IPTV documents CJK_NGN_9_017
18 018 TTC Proposal of cooperation in IPTV-JCA CJK_NGN_9_018
19 019 TTC Japanese contributions in SG13 CJK_NGN_9_019
20 020 TTA CJK NGN Test-bed Activity Testing Screenshots and CJK_NGN_9_020
21 021 TTC Current situation of standardization study in Japan CJK_NGN_9_021
22 022 TTA Proposal for initiating new NGN Work on Multicast CJK_NGN_9_022
23 023 TTA Modified proposal regarding upgrade of CJK CJK_NGN_9_023
capabilities (Updated document of CJK7_014)
Annex B. Candidate of Target Q/SGs for FG-IPTV Deliverables
WG Current Draft Draft Title Candidate of
1 FG IPTV-DOC-0060 Working Document: IPTV Service Requirements Q2/13
1 FG IPTV-DOC-0062 Working document: IPTV Architecture Q3/13
1 FG IPTV-DOC-0055 Working Document: IPTV service scenarios [Note1] Q1/13, (Q8/13)
2 FG IPTV-DOC-0063 Working document: Quality of Experience Q4/13, SG12, SG9
Requirements for IPTV
2 FG IPTV-DOC-0064 Working document: Traffic Management Q4/13
Mechanism for the Support of IPTV Services
2 FG IPTV-DOC-0065 Working document: Application layer reliability Q4/13,SG16
solutions for IPTV
2 FG IPTV-DOC-0066 Working document: Performance monitoring for Q4/13
3 FG IPTV-DOC-0067 Working document: IPTV Security Aspects Q15/13
4 FG IPTV-DOC-0068 Working Document: IPTV Network Control Aspects Q3/13, SG11
5 FG IPTV-DOC-0069 Working Document: Aspects of IPTV End Systems SG16, SG9
6 FG IPTV-DOC-0070 Working Document: IPTV Middleware, Application SG16
and Content Platforms
Note 1: The scope and title of the IPTV service scenario document should be aligned.