The document discusses applying SDN to manage communications networks. It notes that new generation networks will require independent virtual service networks that interact with heterogeneous infrastructure networks. SDN can provide programmable network substrates to allow services to configure resources and routing. Key research areas include wireless virtualization, service-aware networks, and applying SDN and virtualization to emerging areas like the Internet of Things.

1. SDN and Connect
Application of SDN to management
of communications networks
Willie Donnelly

2. Service & Infrastructure Network Interaction
• New Generation Networks
• New Generation Networks will need independent virtual service networks that interact
with the ever increasing and heterogeneous infrastructure networks (e.g. wireless
networks, optical networks, sensor networks, nanoscale networks)
• Service Networks interlinks infrastructure networks to end users
Service
Management
layer
Infrastructure
layer
Media Content
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Multimedia multi-
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Web server Content
Management
Server
Dynamic
Routing
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Hospitals
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3. Cloud Challenges
Enterprise Federation
Data Replication
and Integrity
Service
Configuration and Replication
Service scalability and
replication
Client Aware
Identity Management
Trust
Privacy

4. Services
• Open, virtualized, and programmable networks
• More sophisticated range of abstractions, end-to-end
• Multi-stakeholder service environment
• Decentralised trust management
• Example areas:
– streaming media services
– M2M services
4

5. Networks
• Heterogeneous substrate to be shared by multiple virtual
operators offering specialised services
• Scalable and distributed virtualisation techniques
• Joint optimizations between services, the network and
the devices/nodes
• Network monitoring techniques and post-deployment
tools
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6. Key research themes for Connect

7. smart sensors
microelectronic circuits
RF design
energy harvesting strategies
antennas
thermal strategies
optical technologies
PHY layer signal processing
software/cognitive radio platforms
optical architectures
optical/wireless interface
cognitive networking
virtualization techniques
wireless/mobile architectures
network optimization
network performance monitoring
mobile services
cloud services
spectrum management
privacy/security services
service platforms
Audio-visual media processing
M2M/D2D applications
cyberphysical systems
PHY layer monitoring
sensor networks
RapidPrototypingandExperimentation
Media Rich Applications
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The Range of Expertise in the Centre
Responsive Things
Service-Aware NETWORKS
Network-Aware SERVICES

8. Connect Workpackages

9. Software-defined networking
• Challenge of providing end-to-end QoS across networks
• Need to consider service aware networks
– resource optimisation
– Income generation
• Ubiquitous wireless networks as access is the future
• Need to rethink the management of wireless access
• How to optimise a finite resource – build business model
– Traffic offload Vs Income generation
Wireless access as a services

10. Wireless Virtualisation
• The ongoing convergence of the cellular and WiFi networks,
and the use of much smaller cells, is likely to be a key driver
for wireless virtualisation.
• The need is for ubiquitous virtualization of both wireless and
fixed networks.
• Need to create a flexible pool of resources belonging to a
diverse range of players and hardware technologies
service-aware networks / network-aware services.

11. Service Adaptation: Harnessing a
Programmable Network Substrate
• Creation of a programmable network substrate
– allows services directly configure network resources, data-plane functionality and
distributed management processes
– a need to assess what abstractions of the network state provide the best trade-
off between flexibility and implementation complexity for a range of service class
• developing a suite of network metrics that are sufficiently detailed to
allow services assess the most appropriate adaptation actions to take
given the current network state.
– the use of techniques such as Header Space Analysis to identify potential
alternative routes between network endpoints and collect measurements such as
effective bandwidth and available bandwidth to inform adaptation decisions

12. Service Adaptation: Harnessing a
Programmable Network Substrate
• develop a suite of network configuration primitives that services
can use to effect changes in network behaviour
– Need allow significant configurability while ensuring reusability of
primitives
– network abstractions focus on ensuring service Quality of Experience
• delegating the detailed tasks of managing resources on an end-
to-end basis to the underlying network substrate.

13. Programmable Network Substrate
• Focus on the development of service platforms focused on
specific domains
• How can SDN and Virtualisation be applied to the emerging
Internet of Thinks (IOT) environment
• Connect believes that IOT is integral part of the communications
network.
• Need to understand how best to manage the integration of IOT
service platforms to Internet

14. Internet of Things
• 50B connected devices by 2020.
• Cost effective, optimised devices
• Energy harvesting/management
• Low cost service interface
• Multiple (propriety and non propriety)
communications protocols.
• Non Predictive traffic flows.
• Network needs to distinguish between critical
and no critical real-time traffic.
• Resource discovery
• Resource discovery and optimisation
• Need to intelligently route traffic and use
underutilized network resources.
• Need to eliminate bottlenecks and induce
efficiencies to help the data generated by IoT to
be processed without placing a larger strain on
the network. .
• Need to minimise the energy overhead of data
transmission.
• Need to consider security requirement for IOT
networks
• Ability to combine information from multiple IOT
sources .
SDN is a logical choice for managing IOT
environments
03/04/2015 www.tssg.org 14

15. TSSG in CONNECT
SDN for traffic management in DCs
Resource orchestration in DCs
Monitoring of NFV deployments
Analytics for management
of enterprise applications
SDN for E2E service management

16. Summary
03/04/2015 www.tssg.org 16
Connect provides ideal environment
for industry – academic collaboration on SDN
Balanced between scientifically driving platform research (new scientific solutions)
and
application driven targeted projects (addressing technological bottlenecks)