Transcript Switching/Routing Related Layer(s)

Q1/13 - NGN Initial Considerations
•
NGN difficult to define in terms of:
• specific technologies
• specific architecture
• topology
•
Need to avoid technology traps
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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
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Vertical considerations
Management Plane
Control Plane
User Plane
Application Related Layer(s)
Management Plane
Control Plane
User Plane
Switching/Routing Related Layer(s)
Management Plane
Control Plane
User Plane
Transmission Related Layer(s)
3 Layers - Terminology?
2
Horizontal considerations - Service Separation
Application
Server
Users
Switched
Access
Network(s)
Transport
Protocol
Interworking
Single point
Or
Distributed
Application
Application
Server
Switched
Core
Packet
Network(s)
Switched
Access
Network(s)
Users
Transport
Protocol
Interworking
Separation of Services from Network
3
Protocol Layering considerations
Service Mapping
&
Protocol Translation
Protocol X
Service Mapping
&
Adaptation
Protocol Z
Peering Relationship
Layering Relationship
Protocol Y
No particular prescribed protocol hierarchy:
Any X over any Y
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Protocol end point terminations
P6
N+2
N+2
P4
N+1
P5
N+1
P1
N+1
P2
P3
N
N
N
N
A
B
C
D
End-to-end is a relative term
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Functional Architecture Considerations
Applicative services, Middleware services, Baseware Services
Services
Customer Operations Processes
Resources
Fulfilment
Assurance
Billing
Functions
Management
Invocation
Control
Functional groupings
Transport
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Functional Architecture Considerations
Application Plane
N
C
S
Management
Plane
Session Control Plane
Transport Plane
ETSI Model
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Transport Convergence
Past : Seper. of Voice & DataTransp.
Circuit Switch.
Access Capa.
Circuit Switch.
Transp . Capa.
Packet Switch.
Transp . Capa.
Future : Integration of V & D Access andTransp.
Near Past : Sep. of V & D Access
Circuit Switch.
Access Capa.
Packet Switch.
Access Capa.
Packet Switch.
Transp . Capa.
Present : Integration of V & D Transport
Circuit Switch.
Access Capa.
Packet Switch.
Access Capa.
Circuit Switch.
Transp . Capa.
Packet Switch.
Transp . Capa.
Packet Switch.
Access Capa.
Circuit Switch.
Transp . Capa.
Packet Switch.
Transp . Capa.
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Identification and Location
Device Mobilty Domain
User/Service
Mobilty Domain
Network
Legend:
Points of Attachment (POA) fixed or wireless
Communications Objects (mobile with transient binding to POA)
Transient Binding (mobile with transient binding to device/service)
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Q1/13 - NGN Initial Considerations
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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)
•
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Need for new name/naming resolution mechanisms
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