SLIDE 1
The Impact of Convergence on Submarine Cable System Procurement - - PowerPoint PPT Presentation
The Impact of Convergence on Submarine Cable System Procurement - - PowerPoint PPT Presentation
The Impact of Convergence on Submarine Cable System Procurement Edward West With acknowledgements to co-author Stephen Dawe Next Generation Cable Systems Section 1: Traffic Trends Section 2: Shortcomings of SDH-based Model Section
SLIDE 2
SLIDE 3
Wider change in telecommunications is influencing the future direction of submarine system procurement
Section 1: Traffic Trends
SLIDE 4
- Broadband
- High capacity
content
- VoIP
Growth of the IP Network
Growing IP Network Impact on submarine transmission New applications
- Migration to IP
based network
- NGN
- Submarine cable
systems must be
- ptimised for IP
traffic transmission
SLIDE 5
Unsatisfactory features of the traditional SDH- based submarine system model encourage a shift to new protocols and technology
Section 2: Shortcomings of Current Ownership Model
SLIDE 6
- Discrete systems, operated independently of
Owners’ networks
- Capacity divided up by MIUs
- SDH traffic with seamless transmission continuity
- Specialised SLTE
- Submarine system provides Network Protection
Features of Traditional Model
SLIDE 7
Owners’ Lack of Control
Example Owner with
- wnership in 3 cable systems
SLIDE 8
Owners’ Lack of Control
? ? ?
SLIDE 9
- Providing ultra-reliable paths using G.841
protection is expensive and unnecessary for data traffic
- Inappropriate use of SDH ring architecture can
distort traffic flows
Disadvantages of SDH
SLIDE 10
Station C Station A
ADM SLTE SLTE SLTE ADM SLTE
Station D Station B
ADM SLTE SLTE SLTE ADM SLTE
PoP PoP
Distortion of Traffic Flows
$$$$ $$
SLIDE 11
Trend towards simpler submarine cable networks
Section 3: Wavelength Access
SLIDE 12
Station C Station A
ADM SLTE ADM SLTE
Station D Station B
ADM SLTE ADM SLTE SLTE SLTE SLTE SLTE
Responsibilities transferred to Owners
Direct Wavelength Access Direct Wavelength Access
SLIDE 13
- Stupid networks whereby the control and
intelligence is transferred to the Owners
- System can transport mix of transmission
protocols
- Owners can provision their own paths and
protection
- System becomes more integrated part of Owner’s
global network
- Mesh networks of multiple unprotected links
Direct Wavelength Access
SLIDE 14
Alternatives to traditional technology
Section 4: Next Generation Equipment
SLIDE 15
Station C Station A
SLTE SLTE
Station D Station B
SLTE SLTE
Next Generation SLTE
- SDH
- DWA
- Ethernet
- SDH
- DWA
- Ethernet
SLIDE 16
Station C Station A
SLTE SLTE SLTE SLTE
Station D Station B
SLTE SLTE SLTE SLTE
Router-Based IP Network
IP IP
SLIDE 17
- New model needed to address bursty rather than
guaranteed capacity
- New model needed to address QoS issues
- “Next generation MIU”
- The lack of a data-based ownership model is an
- bstacle which must be overcome
New Ownership Model Needed
SLIDE 18
New multi-vendor environment
Section 5: Impact on Supply Market
SLIDE 19
- Distinction between submarine and terrestrial
terminal equipment is becoming less marked
- Reduced dependence on traditional specialist
submarine suppliers
- New multi-vendor environment due to changes in
technology
Impact on Supply Market
SLIDE 20
Potential shift in submarine cable system procurement
Section 6: Summary & Conclusions
SLIDE 21
- Impact of IP-based demand and technology in the
wider telecommunications industry
- Dissatisfaction with current ownership model
Summary
- Direct wavelength access for large systems
- Next generation equipment used for regional
systems following development of “next generation MIU”
SLIDE 22