DOCUMENT #:
GSC15-GTSC8-15
FOR:
Presentation
SOURCE:
CJK Test-bed Ad-hoc Group(CCSA, TTA and TTC)
AGENDA ITEM:
GTSC 4.1 NGN
CONTACT(S):
CCSA: xuheyuan@mail.ritt.com.cn,
zhangxueli@mail.ritt.com.cn,
TTA: choits@etri.re.kr,
TTC: hd-yamada@kddi.com, katou235@oki.com,
ogawa.kentaro@lab.ntt.co.jp,
morita.naotaka@lab.ntt.co.jp
Fostering of standard technologies by Testbed
environment in China, Japan and Korea
CJK Testbed Ad-hoc Group
(CCSA, TTA and TTC)
Global Standards Collaboration (GSC)
GSC-15
Objectives of the CJK Testbed
Demonstrate usefulness of standard or pre-standard technologies
over the region-wide network environment among China, Japan, and
Korea and contribute results and experiences to international
standard activity to make standard specifications more practical.
 Collect best use cases and practices of standard technologies
 Prove and improve concepts of ongoing technologies in
draft recommendations
China
Vendors
Service
Providers
Vendors
Operators
Test-bed
in China
Korea
Japan
Service
Providers
Vendors
Operators
Test-bed
in Japan
Service
Providers
Operators
Testbed
in Korea
Challenges and outputs
The collaborative study framework has major advantages when conducting
practical studies and developments of ITU Recommendations based on the
relevant mid-and-long term leading edge trends in NGN technology.
Several testing software tools and preliminary testing environments have
been shared among CJK countries(SDOs). A part of those outputs is
available to the people who interested in the similar studies and the
investigations of specifications of ITU Recommendation provided as the out
puts of our CJK Testbed studies.
A current best practice and a practical proof of the specifications of ITU Rec.
Shorten the lead times to develop the NGN system toward the market.
Next steps
 If there are other SDOs who promote standard technologies by use of the
Testbed style environment, CJK would like to share experiences.
 If experts in other SDOs are interested in tools of CJK Testbed, CCSA,
TTA, and TTC are happy to talk with them.
Subjects of the studies
In order to investigate the technology integral to the worldwide services
under the interconnected environment of the multiple NGNs owned by
each country, we have been conducting both testbed studies and
standardization studies in ITU-T involving China, Japan and Korea(CJK).
Study 1: CCSA(CATR), TTA(ETRI), TTC(KDDI, OKI)
Measurement and Evaluation of the quality of service (QoS) and the application
layer quality (QoE; Quality of Experience) in order to control streams of the FMBC
(Fixed Mobile & Broadcast Convergence) services based on the MPM
(Management of Performance Measurement) functions.
Study 2: CCSA(CATR), TTA(ETRI), TTC(NTT)
To achieve requirements for transport stratum on an NGN, a functionally
distributed transport networking (FDTN) architecture which divides the functions of
transport stratum into the control element (CE), the forwarding element (FE) and
the service element (SE) has been studied.
Achievement of Study 1
A new recommendation ITU-T Y.2173 which defines specifications of the MPM
functions was consented(SG13) based on the study 1.
Overall architecture for NGN performance management
Achievement of Study 2
A new supplement Y Sup.11 which describes application scenarios of the iSCP
(independent scalable control plane, equivalent to FDTN) was approved based
on the study 2.
Management
Plane
Control Plane
VNE
CE
CE
SCE
SCE
ME
FE
FE
Data Plane
SPE
SPE
CE: Control Element
SCE: Service Control
Element
FE: Forwarding Element
SPE: Service Processing
Element
VNE: Virtual Network
Element
ME: Management Element
Thank you for your attentions.
CJK Testbed Ad-hoc Group
Supplementary Slides
9
Network configuration of MPM study(Study 1)
CJK
Test-bed
Testing scenarios of MPM study(Study 1)
Performance Evaluation with RTP/RTCP-based Measurement extensions
using the MPM (Management of Performance Measurement) functions.
Supporting of multicast/unicast streams for Voice, Video, Audio and
Concurrent (Multimodal) services
Scenario 6-1: Performance evaluation of Network Segments
Scenario 6-2: Performance evaluation of multimedia services among
CPEs
 Local testing of MPM and CPE-to-CPE performance evaluations
Scenario 6-3: Performance evaluation of multimedia services with two
MPMs
 CPE – MPM1 – MPM2 – CPE performance evaluations
Scenario 6-4: Performance evaluation of multimedia service with three
MPMs
 CPE – MPM1 – MPM2 – MPM3 – CPE performance evaluations
Scenario 7: Testing of RACF and RTP/RTCP-based MPM Interactions
Schedule of MPM study(Study 1)
Achievement of Study 1 (Cont’d)
A new reference point called Rm between RACF and MPM in Rec. Y.2111 was
added based on the study 1.
Service Control
Functions
Service Stratum
Transport Stratum
Rs
RACF
Rd
PD-FE
Ru
Management for
Performance Measurement
Rp
Rm
Rh
CGPEFE
CPN
TRC-FE
Rn
Rc
TRE-FE
Rt
Rw
PE-FE
Transport Functions
Ri
Other NGNs
Network Attachment
Control Functions
Achievement of Study 1 (Cont’d)
Development of a commercial MPM equipment based on Study1.
• Traffic Monitoring/Analysis between separated Network using
MPM functionality
• Transcodec between Terminals in different Network
Terminal B
(ITU-T G.711)
Korea
Japan
Terminal A
(ITU-T G.722)
China
MPM equipment
(Transcodec and Traffic Monitoring/Analysis)
Terminal C
(ITU-T G.711)
Network configuration of FDTN study(Study 2)
Control plane
CE3
SE2
Korea
Data plane
VPN
FE6
Feasibility test
FE7
NCE
CE2
Japan
China
VPN
CE1
SE1
FE1
VPN
FE2
VPN
FE5
VPN
FE3
Data sender
FE4
Data sender
•
•
•
•
•
Normal operation
Topology change
CE failover
SE failover
Characteristics
measurement
- Re-routing delay
- Communication delay
- Failover delay
Research overview of FDTN Study(Study 2)

To achieve requirements for transport stratum on an NGN, we have proposed
a functionally distributed transport networking (FDTN) architecture.
• Network scalability for growing traffic
• Easy to add new transport related services
• Easy to control path according to a policy
Control element (CE) is separated from forwarding element (FE) for
independent scale up.
Service element (SE) minimize development and introduction time & cost for
new services.
CE is separated to achieve service oriented network wide policy routing.



AS division is very
complex operation
Existing transport network
CE
FE
★
CE
FE
CE
★FE
CE
★FE
CE
FE
★
AS2
CE
FE
CE
★FE
CE
★FE
AS3-1
Functionally distributed transport network
★
AS3-2
CE
CE
FE
FE
FE
FE FE
CE
CE
CE
★ FE
AS１
★
FE
CE
★
★
AS１
All nodes need program
upgrade to add new.
functions
CE
FE
FE
FE
FE
CE
FE FE
CE
SE
FE
FE
★ new
CE
SE
FE
FE
FE
FE
FE
FE
FE
Testing scenarios and schedule of FDTN study(Study 2)
 Checking feasibility on FDTN architecture under the
international environment to confirm if the architecture can
solve the problems of increasing network size on NGN.
• Scenario 1 : Preparing and checking for test environments using
international lines
• Scenario 2 : Basic test for functionality check in CJK testbed
between 2 countries
• Scenario 3 : Basic test for functionality check in CJK testbed among
3 countries
2008
CJK
NGN-WG
meeting
Test
scenario
12th
Japan
3/31-4/2
13th
Korea
7/23-7/25
Preliminary
experiment
2009
14th
Japan
12/10-12/12
15th
China
4/8-4/10
Scenario 1 Scenario 2
(J-K)
16th
China
7/22-7/24
Scenario 2
(C-J)
2010
17th
China
11/16-11/17
18th
Korea
4/7-4/9
Scenario 3
(C-J-K)