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© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 1 Evolution of the 3GPP Network Architecture, (the Evolved Packet Core) Dr. Sungho Choi Vice Chairman of 3GPP TSG SA

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  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 1

    Evolution of the 3GPP Network

    Architecture,(the Evolved Packet Core)

    Dr. Sungho Choi

    Vice Chairman of 3GPP TSG SA

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Air Interface Technology Evolution

    02

    12

    040806

    10

    00

    2M/768K

    14M/768K

    14M/5.7M

    28M/11.5M

    42M/5.7M

    84M/23M

    300M/75M

    2M/768K

    Rel. 8 & 9LTE

    Rel. 99WCDMA

    Rel. 4TD-SCDMA

    Rel. 5HSDPA

    Rel. 6HSUPA

    Rel. 7HSPA+

    Rel. 8HSPA+

    Rel. 9HSPA+

    Peak Data Rate (bps)DL/UL

    WCDMA

    OFDMA

    2

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  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Network Architecture Evolution

    Node B

    RNC

    SGSN

    GGSN

    MSC

    OperatorsIP Services

    (e.g., IMS, PSS etc)

    PSTN

    eNode B

    S-GW

    P-GW

    OperatorsIP Services

    (e.g., IMS, PSS etc)

    01

    11

    030705

    09

    99

    13

    Circuit/GPRS Core Network

    Evolved Packet Core Network

    Control Plane delay : 100msUser Plane delay : 5ms

    MME

    3

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    3GPP Organization structure

    Project Coordination Group

    TSG RANRadio Access N/W

    RAN1Radio Layer 1

    RAN2

    Radio Layer2/3

    RAN3

    Access I/F

    RAN4

    Radio Performance

    RAN5

    Conformance Test

    TSG SASystem Architecture

    SA1Services

    SA2

    Architecture/Stage2

    SA3

    Security

    SA4

    Codec

    SA5

    O&M, Charing

    TSG CTCore

    Network&Terminal

    CT1

    NAS (UE-MME I/f)

    CT3

    Network I/F to out

    CT4

    Network I/F in 3GPP

    CT6

    UICC I/F

    Smart Card Appl.

    TSG GERANGSM/EDGE RAN

    GERAN1

    PHY

    GERAN2

    Layer2/3, Access I/F

    GERAN3

    Conformance Test

    4

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Key LTE/SAE Features

    Rel.8 LTE (~09/03)

    20MHz, OFDM New Air

    DL 4x4 MIMO

    SON, HeNB

    SAE For LTE Access

    CS Fallback in EPS

    Single Radio VCC

    Peak: DL 300Mbps,

    UL 75Mbps

    Rel.9 LTE (~10/03)

    Enhanced Dual-Layer Tx

    SON/HeNB Enhancement

    IMS Emergency Calls

    LCS for LTE and EPS

    MBMS support in EPS

    Peak: DL 300Mbps,

    UL 75Mbps

    SON: Self Organizing Network, HeNB: Home eNB, SAE: System Architecture Evolution

    5

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 6

    Evolved Packet Systemarchitecture

    hPCRF

    HSS

    SWn

    Operator's IP Services

    (e.g. IMS, PSS etc.)

    Trusted Non - 3GPP IP

    Access SWa

    HPLMN

    SWd

    Non - 3GPP Networks

    VPLMN

    vPCRF

    ePDG

    SWm

    Untrusted Non - 3GPP IP

    Access STa

    3GPP AAA Server

    S2c

    S2c

    S9

    SGi

    Gx

    Rx

    S6 b

    UE

    3GPP AAA Proxy

    SWx

    Gxa

    Gxb

    Gxc

    S8

    S6a

    S2c

    3GPP Access

    Serving Gateway

    PDN Gateway

    Many 3GPP access technologiesMobility between access technologiesMultiple roaming modelsNon-3GPP accesses

    LTE

    WIMAX

    GSM1900EDGE

    GSM1800

    GSM450GSM900

    UTRAN

    UTRAN

    HSPA

    UTRAN HSPA+

    LTE

    HRPD

    1xRTT 802.16

    LTELTE1800

    LTE2600

    WLAN3GPP2

    GERAN

    UTRAN

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    CS Fallback in EPS

    eNB

    MME

    HSS

    UE

    Serving Gateway

    PDNGateway

    PCRF

    RNC

    MSC

    Node B

    GMSC

    Operators IP Services

    Application of CSFB: CS capable device camping on LTE

    cell can establish/receive CS services

    Reuse of existing CS infrastructure for voice service until IMS VoIP is deployed

    Provide voice roaming support with LTE

    Can support emergency calls using existing CS infrastructure

    SMS can be delivered to the UE

    without redirecting to CS Domain

    7

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Single Radio Voice Call Continuity

    eNB

    MME

    HSS

    UE

    Serving Gateway

    PDNGateway

    RNC

    MSC Server

    Node B

    P-CSCF

    S-CSCFSCC AS

    UE

    UE

    MGW

    UE

    IMS

    SRVCC use case: IMS call initiated in LTE can continue

    in CS domain after moving outside of LTE coverage area

    SR-VCC is invoked if no other VoIP capable PS system (HSPA/eHRPD) is available for VoIP PS-PS HO

    Requires overlapping with GSM/WCDMA/1xRTT coverage

    SRVCC improvements: Mid-call services (like HOLD & MPTY)

    emergency calls

    video calls

    8

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    3GPP Schedule2009 2010 2011 2012 2013

    2H 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q

    Rel.8

    Rel.9

    Rel.10

    Rel.11

    Stage 3 ASN.1 Freeze

    10/0309/12

    ASN.1 Freeze

    11/0611/03

    Stage 1

    10/03

    Test spec

    ASN.1 Freeze

    12/0912/0311/09 12/12

    10/09

    Stage 2 Stage 3 Test spec

    Stage 1 Stage 2 Stage 3

    First LTE launch (09/12)

    Rel.8 Commercialization

    Test spec

    9

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Key Rel.10/Rel.11 Features

    Rel.8 LTE (~09/03)

    20MHz, OFDM New Air

    DL 4x4 MIMO/ UL 1x2 MIMO

    SON, HeNB

    SAE For LTE Access

    CS Fallback in EPS

    Single Radio VCC

    Peak: DL 300Mbps, UL 75Mbps

    Rel.11 (~12/12)

    Rel.9 LTE (~10/03)

    Enhanced Dual-Layer Tx

    SON/HeNB Enhancement

    IMS Emergency Calls

    LCS for LTE and EPS

    MBMS support in EPS

    Peak: DL 300Mbps, UL 75Mbps

    Rel.10 LTE-Adv (~11/06)

    DL 8x8 MIMO, UL 4x4 MIMO

    Carrier Aggregation

    HetNet, MDT

    HeNB Local IP Access

    Wifi offloading

    Machine Type Communication

    Peak: DL 1Gbps, UL 500 Mbps

    CoMP

    Enhancement of Rel.10 features

    System Improvement of MTC

    Service Awareness and Privacy Policies

    IW MNO and Application Provider

    Data Application Impacts

    10

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 11

    Local IP Access (LIPA)

    scope of Local IP access

    logical connection for mobile

    operator IP traffic

    Residential/

    enterprise

    IP Network

    Mobile

    operators

    core

    network

    UE

    Local IP traffic

    IP traffic to mobile operators CN

    All traffic

    on 3GPP

    radio

    LIPA is primarily for end users benefit, to allow access to local residential or corporate network through a 3GPP device

    LIPA provides access for IP capable UEs that are connected via a H(e)NB subsystem to other IP capable entities in the same residential/ enterprise IP network.

    Simultaneous access from a UE to the mobile operators core network and Local IP Access to a residential/enterprise IP network will be supported.

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 12

    WLAN Offloading

    WLAN offloading refers to the dual radio scenario where part of the traffic is routed via WLAN access and part via 3GPP access

    WLAN offloading covers both the scenario where the traffic via WLAN radio is anchored in the EPC (i.e., seamless offloading) and the scenario where it is not anchored (i.e., non-seamless offloading)

    Access Network Discovery and Selection Function (ANDSF) is there to provide the UE with the access network discovery information and the policy on how to use the available access networks

    Available access networks

    Preferred routing of the traffic per APN, per IP flow

    WLAN 3GPP

    RAT

    EPCANDSF

    UE

    HA

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Pool of MTC devices

    MTC server

    MTC serverFAIL!!!

    Overload

    Machine Type Communication

    M2M is recognized as a key segment in future packet networks

    Initial 3GPP efforts have focused on the ability to differentiate machine-type devices

    This allows the operator to selectively handle such devices in overload situations

    Low priority indicator has been added to the relevant UE-network procedures

    Overload and Congestion control is done on both core network and radio access network based on this indicator

    13

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  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    MTC basic architecture

    Work in progress

    14

    3GPP Boundary

    MTC Server

    GGSN / PGW / PDG

    Proxy (TBD)

    SGSN / MME

    HLR / HSS

    API MTCi

    SMS-SC IP-SM-GW

    Legacy SMS

    IP SMS

    MTCsp

    Indirect model service provider controlled

    Indirect model operator controlled Gr/S6a

    Um / Uu /

    LTE-Uu

    RAN M2M

    Application

    Internal interfaces

    (TBD)

    Control plane User plane

    Direct model Gi/SGi

    M2M Application UE

    MTC User

    MTCsms

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Evolution of MTC

    Further functionality being added to 3GPP standards in the following areas Reachability Aspects, MTC Feature control, Device Triggering

    Addressing, Identifiers - especially removal of MSISDN dependencies in the architecture

    Signaling Optimizations, Small Data Transmissions, MTC Monitoring

    MTC is a substantial technical area, full completion will span across multiple future Releases

    15

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Rel.11: Service Awareness and Privacy Policies

    Analyzing traffic, standardization of detecting the service traffic and

    applying the policy

    eNB SGW

    MME

    PGW TDF

    PCRF

    UDR/SPR

    1) Request Detection

    (application id,..)

    2) Report Detection

    (service flow info,)

    0) Get subscription

    including PCC info

    3) Install the

    changed Rule Sd

    Traffic Detection Function newly defined

    Performs the following for the Detected traffic

    Gating of the detected service traffic either blocking or

    permitting unrestricted

    Traffic Shaping of the detected service traffic

    Redirecting of detected service traffic

    TDF: Traffic Detection Function

    16

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Rel.11: IW MNO and Data Application Provider

    Interface will be provided toward 3rd Party Data Application

    Provider

    The following services will be proved over the newly defined interface

    Customised billing/charging, Promotion services, Group addressing

    capabilities, identity services, statistics etc

    17

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Study on Non-MTC Mobile Data Application Impacts

    Study on Service Scenario and Use case on Mobile data application

    Study on Network inefficiency from Mobile data application

    Connection

    mgmt

    traffic Congestion

    Service request : Idle to active transition

    # of messages

    per Busy Hour

    MME

    HSS

    Overload

    Surge of attach reqs

    MME

    HSS

    Old eNB fail!

    Reg to new eNB

    Overload

    (Problem 1)

    (Problem 2)

    18

  • THE Mobile Broadband Standard

    3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011

    Thank You

    19

    www.3gpp.org

    More Information about 3GPP:

    [email protected]

    Dr. Sungho Choi

    3GPP TSG SA chairman

    +82 31 279 5116

    [email protected]

    mailto:[email protected]