Transcript TSACC Test Area - 한국정보통신기술협회(TTA)

GSC9/GTSC_005
SOURCE:
ITU-T
TITLE:
NGN Work in ITU-T SG11
AGENDA ITEM:
5.0
CONTACT:
Yukio Hiramatsu, [email protected],
Tel. +81-422-59-7061, Fax. +81-422-59-5561
NGN Work in ITU-T SG11
2004.5.11
Yukio Hiramatsu
Chairman of ITU-T SG11
GSC-9, Seoul
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Outline
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Major achievements during the current study period
NGN activities in SG11
New Questions of SG11 for the next study period
Work programme for NGN signalling requirements
and protocols
• Draft Technical Reports on NGN
• Draft Technical Report on IP QoS
• Possible work on security
GSC-9, Seoul
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Major achievements during the
current study period
• IN work completed with approval of CS4 (Interworking with IP)
(Q.124x-series)
• BICC CS2 (support of IP bearer) approved. BICC CS3
(further enhancement) progressed. (Q.1902-series, etc.)
• Support of International Emergency Preferential Service
(IEPS) step1 approved. (Amendments to the existing ISDN,
B-ISDN, SS7 and BICC protocols)
• Interworking between SIP – BICC/ISUP CS1 approved.
(Q.1912.5)
• ATM over MPLS signalling progressed. (Amd Q.2920)
• Interworking between AAL2 signalling CS3 and IP control
signalling progressed. (Q.263x-series)
• NGN related protocol work has been started.
GSC-9, Seoul
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NGN activities in SG11
• Two brainstorming sessions (Feb 2002 and Nov 2002 SG11).
• Initial idea for Draft 3 new Questions (Nov.2002 SG11).
• TRQs identified at the NCAP Rapporteurs meeting in Paris
(April 2003)
• Draft 3 new Questions developed (Sep 2003 SG11).
• Work programme updated (March 2004 SG11).
• Set of new Questions for the next study period (March 2004).
• Existing Questions have been studying NGN related issues.
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Q.1/11 (Requirements for IP and IN based services)  Draft TRQs.
Q.4/11 (API requirements)  Q.supp.40, 48
Q.7/11 (IP telephony requirements)  Q.supp.49 (TRQ.2840)
Q.8/11 (QoS requirements)  Draft TRQ.
GSC-9, Seoul
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Draft new Questions
Q
Title
AA
Network control functional architectures in emerging NGN
environment
BB
Application control and signalling requirements and
protocols
CC
Session control and signalling requirements and protocols
DD
Bearer control and signalling requirements and protocols
EE
Resource control and signalling requirements and protocols
FF
Assistance in preparation of handbooks for the deployment
of packet based networks
GG
Control architecture, requirements and protocols to support
Seoul in NGN environments
user nomadicity andGSC-9,
mobility
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Work programme for NGN
Reference
Title
TRQ.NCAP1
High level functional requirements for
Packet-based network control
architecture
Q.NGN-NCA
TRQ.NCAP2
TRQ.NCAPX
TRQ.NGNSTM
Network control architecture
Gate control protocol requirements
Session control protocol requirements
Service Triggering Mechanisms in SIP
environments
GSC-9, Seoul
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TRQ.NCAP1
Scope of NGN
User
Customer
Premises
Network
Access Network
Core Network
User
Customer
Premises
Network
CPN comprising
access unit, TV, PC,
phone, wireless phone
Access Network
CATV network,
ADSL/VDSL, fiber network,
RITL (Radio in the loop),
satellite and wireless
network.
GSC-9, Seoul
Telecommunication
network, PSTN, N-ISDN,
B-ISDN provided by
carriers.
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High level functional requirements
Extract from TRQ.NCAP1:
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Addressing, Naming and Directory Services features
User Profile Management
Terminal Management
Handling of Various Communication Patterns
Mobility Management and Nomadism
Multi-level Quality of Service Support
Security
Network Integrity
Service Creation
Failure Avoidance and Recovery Including from Congestion
and Failure (Network Reliability)
• Public Safety (ETS/TDR)
• OA&M Related Functions (Usage Control & Management)
• Content Delivery Optimisation
GSC-9, Seoul
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Q.NGN-NCA
• Description of various service control architecture
options in the context of a SIP-based Next
Generation Network
• 2 scenarios for SIP server with abstract call state
machine and trigger processing (INAP based and
OSA/Parlay based)
• 4 scenarios for SIP server with trigger processing
and without abstract call state machine (INAP based,
OSA/Parlay based, full SIP and hybrid)
• Scenario for SIP server without trigger processing
nor abstract call state machine
GSC-9, Seoul
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Some scenarios in Q.NGN-NCA
Service Logic Program
Service Execution Environment
S
C
F
Service Logic Program
Service Execution Environment
SIP signalling entity
INAP
Service access manager
A
S
S
S
F
SIP
SIP signalling entity
Abstract Call State Machine
SIP
SIP signalling entity
C
C
F
Service Access Manager
SIP
SIP
SIP
SIP signalling entity
Full SIP
SIP-IN direct access
GSC-9, Seoul
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Signalling requirements for gate
control interfaces (TRQ.ncap2)
Session
control signalling
Gate
controller
IP Access Network
GW
Gate
controller
IP Core Network
GSC-9, Seoul
GW IP Access Network
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Signalling requirements for NGN session
control (TRQ.ncapx)
These may be
collocated in a
single physical
entity.
NNI
ACSF
UNI
SCSF
SCSF
NGN-SCF
ACSF
UNI
Bearer Level
Access Domain
Core Domain
ACSF:
Access server function
NGN-SCF: NGN session control protocol
Access Domain
SCSF: Service call server function
GSC-9, Seoul
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Work on IP QoS
• QoS is one of the most important features in NGN signalling.
• Draft TRQ.IPQOS.SIG.CS1 is under development in SG11.
• Scope expanded to include both “On-path” and “Off-path”,
and to include various underlying technologies other than
MPLS.
• Mr. Wei Feng (Huawei Technologies, China) has been
nominated as Rapporteur on Q.8/11 dealing with QoS
signalling in this study period.
• Interim Rapporteur meeting has been scheduled in July (in
Shenzhen) with kind invitation by China members.
GSC-9, Seoul
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Possible work on security
• Requirements for secured communication interface between
PSTN and VoIP networks
• Analysis and examination of protocols and system interaction
such as, but not limited to: SignTran, SS7, IPSec,
H.248/Megaco, and SIP.
• The end result may be enhanced protocol specifications with
additional security measures as well as raising awareness of
industry best practices.
• Draft Recommendation X.805 - Security Architecture for
Systems Providing End-to-End Communication be used as a
sample tool for protocol security evaluation
GSC-9, Seoul
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Security requirements for NGN
Untrusted Networks
Trusted Networks
ISDN
Secure
interworking
PSTN
Private Networks
Secure
operating
concept
Internet
NGN
GSC-9, Seoul
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