Q1/13 - NGN Initial Considerations

1
Q1/13 - NGN Initial Considerations
NGN difficult to define in terms of
specific technologies specific
architecture topology Need to avoid
technology traps Identify high-level
paradigms separation of concerns Identify
emerging NGN-generic issues Architectural
principles OSI model relevance Need for NGN
models to show separation of concerns
2
Vertical considerations
Application Related Layer(s)
Switching/Routing Related Layer(s)
Transmission Related Layer(s)
3 Layers - Terminology?
3
Horizontal considerations - Service Separation
Separation of Services from Network
4
Protocol Layering considerations
Service Mapping Protocol Translation
Protocol X
Protocol Z
Service Mapping Adaptation
Peering Relationship
Layering Relationship
Protocol Y
No particular prescribed protocol hierarchy Any
X over any Y
5
Protocol end point terminations
P6
N2
N2
P4
P5
N1
N1
N1
P2
P1
P3
N
N
N
N
A
D
C
B
End-to-end is a relative term
6
Functional Architecture Considerations
7
Functional Architecture Considerations
ETSI Model
8
Transport Convergence
9
Identification and Location
10
Q1/13 - NGN Initial Considerations
Identify high-level paradigms Separation of
concerns, services from networks Service
Platform approach Identify emerging
NGN-generic issues Architectural
principles OSI model relevance Need for NGN
models to show separation of concerns via
functional architectures Access/Core
Separation Competitive Access to
Services Access Network to include
switching/routing Multiple transport
technologies, Ethernet, ATM, IP, MPLS in
various combinations Global Mobility/Roaming
(fixed and wireless networks) Need for new
name/naming resolution mechanisms