Carrier Aggregation: Fundamentals and Deployments LTE-Advanced? IMT-Advanced Requirements ... Carrier Aggregation of Band 7 and Band 20 Huawei Carrier Aggregation of Band 2 and Band

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  • Carrier Aggregation: Fundamentals and Deployments

    Presented by:

    Manuel Blanco

    Agilent Technologies

    2014 Agilent Technologies

  • Agenda

    LTE-Advanced

    Carrier Aggregation

    Design and test challenges

    2014 Agilent Technologies 2

  • Industry background

    263 LTE networks in more than 95 countries (+500 operators investing)

    o Approximately 10% are TDD

    o Less than 10% are using 20 MHz

    www.gsacom.com

    157.7 million LTE subscribers (112 million added in the past 12 months)

    o More than half in North America (79 million)

    Over 1,200 LTE capable devices available

    o 40% can operate in Band 3 and Band 7

    LTE is the fastest developing mobile technology ever

    2014 Agilent Technologies 3

    http://www.gsacom.com/

  • Why LTE-Advanced?

    IMT-Advanced Requirements

    Based on an all-IP packet switch network

    Scalable channel bandwidths between 5 and 20 MHz

    Interoperability with existing wireless standards

    2014 Agilent Technologies 4

    Item Subcategory IMT-Adv LTE

    Spectral

    efficiency

    (b/s/Hz)

    Downlink 15

    (4x4 MIMO)

    16.3 (4x4 MIMO)

    Uplink 6.75

    (2x4 MIMO)

    4.32 (64QAM)

    Data rate

    (Mbps)

    Downlink 1000 300

    Uplink 100 75

  • LTE-Advanced New features

    Carrier Aggregation Enhanced MIMO

    Higher data rates

    (bps) Higher spectral effiency

    (bps/Hz)

    Higher spectral effiency

    per coverage area

    (bps/Hz/Km2)

    Het-Nets

    2014 Agilent Technologies 5

  • LTE-Advanced New UE Categories

    UE

    Category

    Data Rate DL/UL

    (Mbps)

    Downlink Uplink

    Max number

    of layers

    Max number

    of layers

    Support for

    64QAM

    1 10 / 5 1 1 No

    2 50 / 25 2 1 No

    3 100 / 50 2 1 No

    4 150 / 50 2 1 No

    5 300 / 75 4 1 Yes

    6 300 / 50 2 or 4 1 or 2 No

    7 300 / 100 2 or 4 1 or 2 No

    8 3000 / 1500 8 4 Yes

    LT

    E

    LT

    E-A

    2014 Agilent Technologies 6

  • Agenda

    LTE-Advanced

    Carrier Aggregation

    Design and test challenges

    2014 Agilent Technologies 7

  • Carrier Aggregation Fundamentals

    Bandwidth extension by aggregating LTE component carriers (CC)

    o Up to 5 CC can be allocated in both DL and UL 100 MHz aggregated

    o Components carriers are backwards compatible with Release 8 terminals

    o Symmetric or asymmetric DL/UL CA configurations

    Motivation

    o Higher peak data rates

    o Facilitate efficient use of fragmented spectrum

    o Enable 150 Mbps (Category 4) in typical

    deployments where 20MHz contiguous spectrum

    is not an option

    2014 Agilent Technologies 8

    Aggregated

    Data Pipe

    10MHz

    DL Carrier 1

    10MHz

    DL Carrier 2

    Carrier Aggregation is the first step of LTE Advanced

  • PCC (Primary Component Carrier)

    oHandle the RRC/NAS procedures

    oMeasurement reports and mobility

    oUEs using the same set of CCs, can have different PCC

    oRole only changed with handover

    oPUSCH is mandatory

    SCC (Secondary Component Carrier)

    oUE handles up to 4 SCC

    oConfigured using RRC signaling procedures

    oCan be dynamically activated/de-activated using a MAC control element

    oActivated only when in CONNECTED mode

    oPUSCH is optional - asymmetric CA

    Carrier Aggregation Fundamentals

    2014 Agilent Technologies 9

    SCC

    SCC

    PCC

    Downlink

    PCC

    SCC

    Uplink

  • Carrier Aggregation Fundamentals

    PCC UE

    RRC Connection

    MME

    Attach Request

    Authentication and NAS Security

    AS Security

    UE capabilities

    Attach Accept + Default EPS

    SCC

    Release 8

    PS Attach

    Band 4 - 10 MHz Band 17 -10 MHz

    Data Link (single carrier) 73 Mbps

    2014 Agilent Technologies 10

  • Carrier Aggregation Fundamentals

    PCC

    RRC Connection

    MME

    Attach Request

    Authentication and NAS Security

    AS Security

    UE capabilities

    Attach Accept + Default EPS

    RRC Reconfiguration

    + Add SCC

    SCC

    Release 8

    PS Attach

    Release 10

    SCC Addition

    & Activation

    Data Link (single carrier) 73 Mbps

    Band 17 -10 MHz Band 4 - 10 MHz

    2014 Agilent Technologies 11

    UE

  • Carrier Aggregation Fundamentals

    Physical cell ID and

    DL frequency

    channel

    Common configuration:

    DL and UL channel BW,

    uplink EARFCN,

    antenna config,

    physical channels config, power

    control config

    Dedicated configuration:

    Transmission mode,

    physical channels config,

    cross-carrier scheduling,

    CSI-RS config Source: 3GPP TS 36.331

    SCC Configuration at RRC level Screen capture of the Agilent Trace log and debug application (Trace Spy II)

    2014 Agilent Technologies 12

    http://www.3gpp.org/DynaReport/36331.htm

  • Carrier Aggregation Fundamentals

    PCC

    RRC Connection

    MME

    Attach Request

    Authentication and NAS Security

    AS Security

    UE capabilities

    Attach Accept + Default EPS

    RRC Reconfiguration

    + Add SCC

    SCC

    Release 8

    PS Attach

    Release 10

    SCC Addition

    & Activation

    Data Link (single carrier) 73 Mbps

    MAC control element

    Data Link (2 CC aggregated) 147 Mbps

    Band 17 -10 MHz Band 4 - 10 MHz

    2014 Agilent Technologies 13

    UE

  • 2014 Agilent Technologies 14

    Band A Band B

    Intra -band

    contiguous

    Reso

    urc

    e b

    lock

    f

    Reso

    urc

    e b

    lock

    f

    Intra-band

    non-contiguous

    Inter-band

    non-contiguous

    Reso

    urc

    e b

    lock f

    Band A

    Band A

    Modes and Deployments

  • Release 10: o Signaling to support up to 5 CC

    o Scenarios limited to 2 CCs

    o Maximum aggregated bandwidth is 40MHz

    o Prioritized support intra band contiguous and inter band

    o Rest of scenarios were postponed to later Releases

    Intra - band Contiguous CA

    E-UTRA CA

    Band

    E-UTRA operating

    Band

    Uplink (UL) band Downlink (DL) band

    Duplex mode

    UE transmit / BS receive Channel BW MHz

    UE receive / BS transmit Channel BW MHz

    FUL_low (MHz) FUL_high (MHz)

    FDL_low (MHz) FDL_high (MHz)

    CA_40 40 2300 2400 [401)

    ] 2300 2400 [401)

    ] TDD

    CA_1 1 1920 1980 40 2110 2170 40 FDD

    [1) For the first phase of LTE TDD CA for UE side, with eventual goal for 50MHz]

    Inter - band Non -Contiguous CA

    E-UTRA CA Band

    E-UTRA operating

    Band

    Uplink (UL) band Downlink (DL) band

    Duplex mode

    UE transmit / BS receive Channel BW MHz

    UE receive / BS transmit Channel BW MHz FUL_low (MHz) FUL_high

    (MHz) FDL_low (MHz) FDL_high

    (MHz)

    CA_1-5 1 1920 1980 10

    1) 2110 2170 10

    FDD 5 824 849 10

    1) 869 894 10

    1) Only one uplink component carrier is used in any of the two frequency bands at any time.

    2014 Agilent Technologies 15

    Inter-band Intra-band cont

    1 2 3

    CA

    Band C

    om

    bin

    atio

    ns

    Rel.10

    Modes and Deployments

  • Release 11: o Maximum aggregated bandwidth is 40MHz

    o Support multiple timing advances (required for UL CA)

    o Core requirements for intra-band non-cont

    o Performance requirements for new inter-band and

    intra-band combinations

    2014 Agilent Technologies 16

    Inter-band Intra-band cont

    Inter-band

    1 2 3

    CA

    Band C

    om

    bin

    atio

    ns

    24

    CA

    Band C

    om

    bin

    atio

    ns

    Rel.10

    Intra-band cont

    Modes and Deployments

    Intra non-cont

    Rel-11 inter-band Carrier Aggregation Rapporteur

    Carrier Aggregation of Band 3 and Band 7 TeliaSonera

    Carrier Aggregation of Band 4 and Band 17 AT&T

    Carrier Aggregation of Band 4 and Band 13 Ericsson (Verizon)

    Carrier Aggregation of Band 4 and Band 12 Leap Wireless

    Carrier Aggregation of Band 5 and Band 12 US Cellular

    Carrier Aggregation of Band 7 and Band 20 Huawei

    Carrier Aggregation of Band 2 and Band 17 AT&T

    Carrier Aggregation of Band 4 and Band 5 AT&T

    Carrier Aggregation of Band 5 and Band 17 AT&T

    Carrier Aggregation of Band 3 and Band 20 Vodafone

    Carrier Aggregation of Band 8 and Band 20 Vodafone

    Carrier Aggregation of Band 3 and Band 5 SK Telecom

    Carrier Aggregation of Band 4 and Band 7 Rogers Wireless

    Carrier Aggregation of Band 11 and Band 18 KDDI

    Carrier Aggregation of Band 1 and Band 18 KDDI

    Carrier Aggregation of Band 1 and Band 19 NTT DoCoMo

    Carrier Aggregation of Band 1 and Band 21 NTT DoCoMo

    Carrier Aggregation of Band 3 and Band 8 KT

    Rel.11

    1 19 5

  • 1

    Release 12: o Core requirements uplink CA in inter-band

    o Performance requirements for intra-band non-contiguous

    o Core analysis for 3 component carriers in inter-band

    o Maximum aggregated bandwidth is 50MHz

    2014 Agilent Technologies 17

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