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What are the benefits of convergence?
the cost of deployment is highly reduced
the cost of management and maintenance is reduced
a single infrastructure has to be deployed
What are the opportunities brought by convergence?
offer a unique global interconnection network for all the communication services and needs with a reduced cost
possibility to address new markets where the previous networks were too expensive
What are the main limitations of convergence?
A system does not fit all:
different governance -- the systems are administrated differently
different configuration -- the systems have a different deployment
functionality customization -- different functionality is needed
Which services have already converged in a telecom network?
Fixed Telephony
Mobile Telephony
Internet Access
TV & Content Distribution
Which networks have already converged in a telecommunication system?
GSM (2G) and UMTS (Universal Mobile Terrestrial System 3G) share the same core network. Same components, fully unified, only different radios for connection with older devices.
What are the next networks supposed to converge?
satellite networks
home automation / remote control
critical infrastructures
car-to-x communication
factory automation
Which are the main characteristics of a carrier grade network?
extremely reliable
well tested
proven in its capabilities
5 nines or even 6 nines
Operator wide AAA functionality
QoS insurance
Network Availability – Coverage
Radio Resource Reservation
Device Power Control
Predictable service with guaranteed and non-guaranteed resources
Mobility support
Ubiquitous services
Zero packet loss handover support
Guaranteed service
Security
What is a network function?
Basic element of a system within a network infrastructure with well-defined external interfaces (input/output) and well-defined functional behavior (state, transfer function).
What is SDN? − What is the motivation to use SDN?
SDN as network architecture:
control and data plane decoupling
forwarding decision are flow based not destination based
control logic is in a centralized place
network is programmable through software application on top of the controller
What are the three layers of SDN?
application layer
control layer
infrastructure layer
What are the advantages of SDN?
Simplify policy enforcement and network reconfiguration
logically centralized controller as single point of presences
separation of concerns is the consequence
1. What is convergence? Give an educated example of convergence
Convergence is the merging of distinct technologies, industries or devices into a unified unit.
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