5th Generation Network at TU Berlin | Flashcards & Summaries

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Lernmaterialien für 5th generation network an der TU Berlin

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen 5th generation network Kurs an der TU Berlin zu.

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What are the benefits of convergence?

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the cost of deployment is highly reduced

the cost of management and maintenance is reduced

a single infrastructure has to be deployed

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What are the opportunities brought by convergence?

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  • 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 

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 What are the main limitations of convergence?

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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 

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Which services have already converged in a telecom network?

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  • Fixed Telephony

  • Mobile Telephony

  • Internet Access

  • TV & Content Distribution

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Which networks have already converged in a telecommunication system?

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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.

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What are the next networks supposed to converge?

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  • satellite networks

  • home automation / remote control

  • critical infrastructures

  • car-to-x communication

  • factory automation

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Which are the main characteristics of a carrier grade network?

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  • 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


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What is a network function?

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Basic element of a system within a network infrastructure with well-defined external interfaces (input/output) and well-defined functional behavior (state, transfer function).

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What is SDN? − What is the motivation to use SDN?

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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

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What are the three layers of SDN?

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application layer

control layer

infrastructure layer 

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What are the advantages of SDN?

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  • Simplify policy enforcement and network reconfiguration

  • logically centralized controller as single point of presences

  • separation of concerns is the consequence

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1. What is convergence? Give an educated example of convergence

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  • Convergence is the merging of distinct technologies, industries or devices into a unified unit.

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Q:

What are the benefits of convergence?

A:

the cost of deployment is highly reduced

the cost of management and maintenance is reduced

a single infrastructure has to be deployed

Q:

What are the opportunities brought by convergence?

A:
  • 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 

Q:

 What are the main limitations of convergence?

A:

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 

Q:

Which services have already converged in a telecom network?

A:
  • Fixed Telephony

  • Mobile Telephony

  • Internet Access

  • TV & Content Distribution

Q:

Which networks have already converged in a telecommunication system?

A:

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.

Mehr Karteikarten anzeigen
Q:

What are the next networks supposed to converge?

A:
  • satellite networks

  • home automation / remote control

  • critical infrastructures

  • car-to-x communication

  • factory automation

Q:

Which are the main characteristics of a carrier grade network?

A:
  • 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


Q:

What is a network function?

A:

Basic element of a system within a network infrastructure with well-defined external interfaces (input/output) and well-defined functional behavior (state, transfer function).

Q:

What is SDN? − What is the motivation to use SDN?

A:

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

Q:

What are the three layers of SDN?

A:

application layer

control layer

infrastructure layer 

Q:

What are the advantages of SDN?

A:
  • Simplify policy enforcement and network reconfiguration

  • logically centralized controller as single point of presences

  • separation of concerns is the consequence

Q:

1. What is convergence? Give an educated example of convergence

A:
  • Convergence is the merging of distinct technologies, industries or devices into a unified unit.

5th generation network

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