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  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

    1

    Marius Corici, Prof. Dr. Thomas Magedanz, Dragos Vingarzan Fraunhofer Institute FOKUS, Germany [email protected] [email protected] [email protected]

    Unleashing the potential of virtualization by the right toolkits and open testbeds Lessons learned from implementing a virtualized

    3GPP EPC toolkit

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

    2

    Agenda

    n Understand the transition towards virtual core networks n Background

    3GPP Evolved Packet Core architecture Network Functions Virtualization

    n What does Mobile Core Network virtualization really mean n Core network as a software n Mobile Core Network beyond EPC n Fraunhofer FOKUS OpenEPC Testbed Realization n Summary and Conclusions

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

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    The control of Telcos is getting smaller IMS/EPC as last resort??

    Classic Telco Voice Evolution

    Over the Top Multimedia Services Evolution

    IP

    CS

    NGN

    All IP

    SDP

    EPC IMS

    n All IP Networks will pave the road for Over the Top (OTT) Application n Evolved telecom platforms will provide revenue potentials via Service

    Gateways (open APIs), VoIP (IMS) and Smart Bit pipe approaches (EPC)

    VoIP

    IN

    NGN

    IM Communities

    Future Internet

    I. of Services I. of Things Net. of the

    Future

    2010 ??? 2006

    Over the Top Apps Clouds

    RCS VoLTE

    MTC

    Service Gateway (Open APIs)

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

    4

    Agenda

    n Understand the transition towards virtual core networks n Background

    3GPP Evolved Packet Core architecture Network Functions Virtualization

    n What does Mobile Core Network virtualization really mean Core network as a software

    n Mobile Core Network beyond EPC n Fraunhofer FOKUS OpenEPC Testbed Realization n Summary and Conclusions

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

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    Evolved Packet Core (EPC)

    n EPC is part of the 3GPP Evolved Packet System (EPS) n The EPC is a multi-access core network based on the Internet Protocol (IP) one

    common packet core network for both trusted networks including

    n 3GPP Access (LTE-E-UTRAN, UMTS-UTRAN, GPRS-GERAN) n Non 3GPP Access (WIMAX, CDMA2000/HRPD)

    and untrusted networks including n Non-3GPP Access (WLAN)

    n EPC provides connection to IP service domains IMS Internet (or others, e.g. P2P etc.)

    n Important EPC functions include: NAS and security (AAA) mobility and connectivity management policy QoS control and charging (PCC)

    IMS

    Evolved Packet Core

    Internet

    3GPP Access

    e.g. LTE

    Non 3GPP Access

    trusted trusted / untrusted

  • Fraunhofer FOKUS Competence Center NGNI

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    3GPP EPC Architecture

    3GPP Accesses

    Trusted Non-3GPP

    Untrusted Non-3GPP

    S-GW

    PDN GW ANGw

    ePDG

    MME PCRF

    n Gateways Access Network Specific and Centralized Data forwarding Unified policy based Enforcement Transparent Mobility

    n Control Entities Subscription based: Mobility Management in 3GPP

    accesses Policy and Charging decisions

    n Based on the App. requirements Access Network Discovery and

    Selection n Subscription Entities

    Home Subscriber Server Imported from IMS

    AAA server for communication with non-3GPP Accesses

    ANDSF

    AAA Server

    HSS AF

  • Fraunhofer FOKUS Competence Center NGNI

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    3GPP EPC Protocols

    3GPP Accesses

    Trusted Non-3GPP

    Untrusted Non-3GPP

    S-GW

    PDN GW ANGw

    ePDG

    MME PCRF

    n Mobility and forwarding protocols GPRS Tunneling Protocol (GTP) Proxy Mobile IP (PMIP) Mobile IP (MIP)

    n Control protocols Diameter for the communication

    with: n Subscription Repositories n Applications n Enforcement Points

    n Communication with Mobile Devices

    OMA Device Management (DM)

    ANDSF

    AAA Server

    HSS AF

    Diameter OMA DM over HTTP/other GTP/PMIP IP

  • Fraunhofer FOKUS Competence Center NGNI

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    3GPP EPC Functional Features

    3GPP Accesses

    Trusted Non-3GPP

    Untrusted Non-3GPP

    S-GW

    PDN GW ANGw

    ePDG

    MME PCRF

    n Network Access Control Functions Authentication and Authorization IP reachability context Indirection tunnel establishment Default bearer is initialized

    n Resource Management Functions Application and UE triggered

    resource reservations Policy based decisions Enforcement of QoS rules on the

    data path n Mobility Management Functions

    Intra-3GPP MME controlled n Soft handovers

    With non-3GPP ANDSF assisted n Only hard handovers (except

    CDMA 2000)

    ANDSF

    AAA Server

    HSS AF

  • Fraunhofer FOKUS Competence Center NGNI

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    Clouds (SaaS)

    EPC Capabilities = Ubiquitous IP Connectivity to the Cloud

    n The EPC allows multiple access networks to be connected in a controlled way (secure, QoS, seamless) to either the operator IP cloud (e.g. IMS or any intranet) the internet or others

    n Note that the EPC provides controlled IP connectivity, in regard to User authentication and authorization Quality of Service and related Charging Mobility Management

    E-UTRAN

    User Equipment may be connected to

    several IP service domains in parallel

    EPC

    UTRAN

    WiMAX

    WLAN

    EPC = IP Connectivity

    IMS

    Internet

    Packet GW

    Packet GW

    SIP

    HTTP / ???

    EPC = IP Connectivity

  • Fraunhofer FOKUS Competence Center NGNI

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    Network Functions Virtualization vs. current network architectures

    n Definition: Network Functions Virtualization aims to transform the way that network operators

    architect networks by evolving standard IT virtualization technology to consolidate many network equipment types onto industry standard high volume servers, switches and storage, which could be located in Data Centres, Network Nodes and in the end user premises, as illustrated in Figure 1.

    It involves the implementation of network functions in software that can run on a range of industry standard server hardware, and that can be moved to, or instantiated in, various locations in the network as required, without the need for installation of new equipment.

    n Network Functions Virtualization (NFV) presumes that network functions are: Software implementations (software programs) of the current network components

    n Software technologies brought the success of Internet by separating hardware life-cycle from application life-cycle - i.e. all IP services use this paradigm

    Running on top of standard server hardware architectures n No dedicated hardware gives a high liberty on program placement, merging, etc.

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

    11

    Agenda

    n Understand the transition towards virtual core networks n Background

    3GPP Evolved Packet Core architecture Network Functions Virtualization

    n What does Mobile Core Network virtualization really mean Core network as a software

    n Mobile Core Network beyond EPC n Fraunhofer FOKUS OpenEPC Testbed Realization n Summary and Conclusions

  • Fraunhofer FOKUS Competence Center NGNI

    COLORPICKER: Zum Auswhlen der korrekten Farbe mit dem Tool Farbe auswhlen auf das jeweilige Feld unten klicken oder den Web/RGB farbwert manuell eingeben:

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    What is Network Functions Virtualization (NFV)

    n Network Functions Virtualization (NFV) is a novel paradigm that presumes that the network functions: Are implemented only as

    software (programs) Can run on top of common

    se