3GPP status of IMT/IMT-Advanced Spectrum Bands

otspot High-Frequency, High-BW , High performance

Sep 18th, 2012 HUAWEI TECHNOLOGIES CO., LTD.

Introduction Telecommunication Evolution Trends

BW Expansion for

Hotspot & Indoor

…

…

…

3GPP R12 Air Interface Improvement for Hotspot& Indoor

Introduction

HUAWEI TECHNOLOGIES CO., LTD.

Page 2

Cellular Wireless Law of Speed: Will the trend continue?

5G Speed

Mobile device for everything

?

Big Data Video

4G Gbps MBB Data

3G Mbps

UMTS

2G

Voice Data

kbps

1G bps

Cell size shrinks Voice

Cell density increases

AMPS Voice

Time 1980

1990

2000

HUAWEI TECHNOLOGIES CO., LTD.

2010 Page 3

2020

Next Generation Wireless: To enable Hyper Connectivity Hyper Connectivity: Everyone and Everything

Connected Group Connected Individual

Reed Law (2n)

Metcalfe Law (n2)

Mobile Broadband for Anything, Anytime from Anywhere HUAWEI TECHNOLOGIES CO., LTD.

Page 4

Drivers Augmented Reality

Multiview TV

Virtual Reality

Smart Phone drives capacity by 500-1000 times by 2020

Concerns on global warming and requirements on long lasting mobile battery and cost cutting drive energy aware radio and network technologies HUAWEI TECHNOLOGIES CO., LTD.

New Services and Applications changes traffic and connection patterns

M2M, D2D, Internet of everything, Cloud computing, Future Internet and optical/wireless integration change network topology Page 5

Capacity Challenges Ununiformed traffic distribution, >80% in Hotspot&Indoor

Need to handle Digital Flood of “2012”

UL/DL asymmetric traffic for most MBB services Distribution of Data Services in terms of Throughput Others 15.54%

Securities 14.49% IM

7.55% 14.91%

85.09%

Audio

1.87% 6.96%

Video

0.15%

Domain information 38.53%

Top-level DNS Top-10 websites

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Page 6

Features to meet Capacity X500~1000 Challenges Freq. resource

Cnet  BW  (1  overhead )  R  DL DL

Freq. resource reuse

N

site

N

sec tor



 N MU

Denser Network & ICIC

Band Expansion BW X

4 ~ 20

• Baseline: 5MHz • Band exp. to: 100MHz • Key solutions: - New spectrum/refarming - GB reduction & Flexible spectrum usage - Orthogonal freq. for Macro/LPN

SU spectrum efficiency      min log 2 1  SINR , log 2 Mod   N   SU  streams 

Freq. reuse x

20

Geometry increase x

• Baseline: 3-scetor site • Dense cells: 10~20 LPN • Key solutions: - Dense cells / HetNet with: . 20X freq. reuse . 5X geometry increase by low path loss, and interference avoidance/coordination

Air-Interface Efficiency

5

Air-interface SPC x 2 ~

• Baseline: LTE R8 • Air-Interface Improvements • Key solutions: - Overhead reduction - High-order mod, 256QAM - Traffic adaption, e.g. Flex. DL/UL - Advanced multi-antenna and signal processing tech.

Energy saving strategy will be considered through the whole life cycle HUAWEI TECHNOLOGIES CO., LTD.

Page 7

3

Introduction Telecommunication Evolution Trends

BW Expansion for

Hotspot & Indoor

…

…

…

3GPP R12 Air Interface Improvement for Hotspot& Indoor

Introduction

HUAWEI TECHNOLOGIES CO., LTD.

Page 8

ITU Spectrum Assignment History & Plan Overview 2000

1990

2010

2020

WARC-92（1992） WRC-2000（2000） G/C frequency bands : • 806-960 MHz (2*35MHz@EU) • 1710-1885 MHz (2*35MHz@EU)

WRC-07（2007） 3G core and extension bands • 1885-2025 MHz (2*60MHz@EU) • 2110-2200 MHz • 2500-2690 MHz（incl. FSS）

•

450-470MHz CDMA450 698-790MHz (2*30MHz@EU) 790-806MHz 2300-2400MHz

•

3400-3600MHz (200MHz@EU)

• • •

WRC-15（2015）

Potential candidate bands for mobile communication systems • White Space/DD2 (below 1GHz) • 1427-1525MHz • 3800-4200MHz • …

In each region, limited spectrum resources were assigned to telecom., hard to meet ~20 times of band extension for future 500~1000 times capacity  Future spectrum consideration may towards to: 

– –

–

High-frequency band White space / DD2/FSS/… with secondary license for telecom. Flexible spectrum utilization HUAWEI TECHNOLOGIES CO., LTD.

Page 9

3.5GHz: Potential Global Dedicated Wideband Hotspot Access Available for auction Japan >800MHz

Aero radio navigation

3.4 3.4045

3.4265 3.4225

3.6

3.456 3.5

3.4

Europe 400MHz

4.4

4.2

4.9[GHz]

3.6

FDD

3.7

TDD

TDD Federal Government High power radar countermeasures

US 50MHz

Cable TV feed Satellite Control

3.65

3.5

3.8

4.2

3.7

Canada 50MHz 3.65

3.7

China ?

C-band and satellite(DL) C-band and satellite(DL) 3.5

3.43

3.4

3.4

3.43

3.7

3.53

3.5

3.53

4.2

3.7

4.2

There will be potentially 800MHz expanding to 4.2MHz, when C-band Satellite quit for Ku-band HUAWEI TECHNOLOGIES CO., LTD.

Page 10

3GPP status of IMT/IMT-Advanced Spectrum Bands •

700M

New spectrum is allocated for IMT-Advanced 

450−470 MHz



698−862 MHz



790−862 MHz

800M Band 1 2 3 4 5 6 7 8 9 10 11 12 13 14

  

850M 900M 1500M Uplink 1920 – 1980 MHz 1850 – 1910 MHz 1710 - 1785 MHz 1710 – 1755 MHz 824 – 849MHz 830 – 840 MHz 2500 – 2570 MHz 880 – 915 MHz 1749.9 – 1784.9 MHz 1710 MHz – 1770 MHz 1427.9 – 1447.9 MHz 698 - 716 MHz 777 – 787 MHz 788 – 798 MHz

 

820-960 MHz 1.4-1.5GHz 1.7-2.1 GHz

1800M 2100M Downlink 2110 – 2170 MHz 1930 – 1990 MHz 1805 - 1880 MHz 2110 – 2155 MHz 869 - 894MHz 875 – 885 MHz 2620 – 2690 MHz 925 – 960 MHz 1844.9 – 1879.9 MHz 2110 – 2170 MHz 1475.9 – 1495.9 MHz 728 – 746 MHz 746 – 756MHz 758 – 768MHz

15/16

Reserved

Reserved

17 18 19 20 21

704 – 716MHz 815 – 830 MHz 830 – 845 MHz 832 - 862 MHz 1447.9 – 1462.9 MHz

734 – 746MHz 860 – 875 MHz 875 – 890 MHz 791 - 821 MHz 1495.9 – 1510.9 MHz

22 23 24 25

3410 – 3490MHz 2000 – 2020MHz 1626.5 – 1660.5MHz 1850 – 1915MHz

3510 – 3590MHz 2180 – 2200MHz 1525 – 1559MHz 1930 – 1995MHz

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2600M 3600M Duplex

FDD

 

2.3−2.4 GHz 2.5-2.69 GHz

2000M

2300M

3.4−4.2 GHz 4.4-4.99 GHz

2600M

3600M

Band

Uplink

Downlink

33

1900 – 1920 MHz

1900 – 1920 MHz

34

2010 – 2025 MHz

2010 – 2025 MHz

35

1850 – 1910 MHz

1850 – 1910 MHz

36

1930 – 1990 MHz

1930 – 1990 MHz

37

1910 – 1930MHz

1910 - 1930MHz

38

2570 – 2620 MHz

2570 – 2620 MHz

39

1880 – 1920 MHz

1880 – 1920 MHz

40

2300 – 2400 MHz

2300 – 2400 MHz

41

2496 -2690MHz

2496 -2690MHz

42

3400-3600MHz

3400-3600MHz

43

3600-3800MHz

3600-3800MHz

Duplex

TDD

• Low-freq. band fits to large coverage with global bands benefit the cost & UE maturity • Effort needed for high-freq. band deployment • Large BW is attractive to reach Cap.X500 • Potential global assignment • Strategic usage of the spectrums Page 11

Strategic Usage of Multi-Band Spectrum WiFi

Indoor AP/Femto

Throughput

3.5GHz

Pico/iPico

iDBS(DAS)

Micro

Macro

LTE for indoor/hotspot MBB capacity and offload

WiFi 2.4GHz LTE AP 3.5 GHz

Hot spots

LTE 700/800MHz

Urban & Suburban G/U/L 1800 / 2100MHz / 2.6GHz Nationwide G/U 900MHz HUAWEI TECHNOLOGIES CO., LTD.

Page 12

GB-free Spectrum Assignment: Inter-operator small cell synchronization • Motivation •

3400MHz to 3600MHz will be allocated to multiple operator with high probability as TDD mode. Each operator deploy the network independently.

•

The TDD base stations in same frequency or conjoint frequency will be interfered each other, if no synchronization or coordination parameters among them.

•

80MHz

60MHz Operator A

GB

Operator B

60MHz GB

Operator C

3600MHz

3400MHz

GB-free spectrum assignment - Interference/co-existence among small cells of multi-operators - Synchronization/interference coordination is the must

If guard band is used , the spectrum usage will be quite low. Dynamic listengin & resource configuration for traffic adaption

•

TDD DL/UL configuration

Cell_1_ operator A Cell_2_ operator B

Cell_3_ operator C

HUAWEI TECHNOLOGIES CO., LTD.

Freq. resource BW

Cell_1

D

S

U

U

D

40MHz

Cell_2

D

S

U

U

U

20MHz

Cell_3

D

S

U

D

D

40MHz

Page 13

Introduction Telecommunication Evolution Trends

BW Expansion for

Hotspot & Indoor

…

…

…

3GPP R12 Air Interface Improvement for Hotspot& Indoor

Introduction

HUAWEI TECHNOLOGIES CO., LTD.

Page 14

3GPP timeline and draft Rel-12 timing Rel-11 2012

2011

#52

#53

Rel-11 study Items

#54

Rel-13

Rel-12

#55

#56

2013

#57

Rel-11 work Items

#58

#59

2014

#60

#61

#63

#62

#64

Rel-11 stage 3 completion

Rel-11 ASN.1 freezing Rel-12 work Items

Rel-12 study Items

Rel-12 Workshop

Rel-12 stage 3 completion Rel-12 ASN.1 freezing

HUAWEI TECHNOLOGIES CO., LTD.

Page 15

#65

#66

3GPP R12: small cell / LTE-Hi related WI/SIs Topic

Title

WI or SI

Schedule

Remarks

(RAN ) email discussion on small cell enh.

Before RAN#57

Summarized in RAN#57

(RAN) Small cell requirements & scenarios SI

RAN#57~RAN#58

Refer to the output of the RAN email discussion

Small cell PHY-layer enh.

SI

RAN#58 ~ RAN#60

Refer to the PHY-layer output of small cell req.&scenario SI , maybe followed by multiple small cell PHY enh. WIs

Small cell high-layer enh.

SI

RAN#58 ~ RAN#60

Refer to the high-layer output of small cell req.&scenario SI, maybe followed by multiple small cell high-layer Wis

TDD flexible DL/UL configuration

WI

RAN#58

Based on R11 SI output

LTE-Hi/eLA/small cell enh. Related topics

-R11 leftover non-standalone part can start after RAN#57 New carrier type

WI

Start after Nov.,2012

General enh.

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Page 16

-Other new part e.g. Standalone NCT if any, should start later (after RAN#60) taking small cell SI into account

LTE-Hi Operational RQs & Way Forward: New spectrum & Technical Evolution New Spectrum Hotspots coverage/capacity extension for outdoor and indoor

Low cost (CAPEX & OPEX) with easy deployment QoS for voice & high speed data service; security Managed by operator; Minimum interference to existing macro network

HUAWEI TECHNOLOGIES CO., LTD.

Operational RQ.

High performance for high density MBB traffic

• Wide bandwidth for MBB traffic offload • Dedicated LPN carrier to avoid Macro/LPN interference for low deployment and device cost • Inter-operator synchronization of small cells

Technology evolution • Spectral efficiency enhancement for hotspots • Flexible configuration for traffic adaption and interference avoidance • Enhanced mobility & energy efficiency with tight coupling between macro and small cells • Architecture with LIPA/SiPTO, security and charging

Page 17

Hotspot/Indoor Scenario Specific Optimizations Indoor/Hotspot Scenarios

Technical Evolutions for LTE APs

Channel Characteristics

PHY layer

•

High SINR

•

High-order-modulation, e.g. 256QAM

•

Rich multi-paths

•

MIMO

•

Low mobility/small number of UEs per cell

•

Scheduling simplifications / Less feedback

•

Flat frequency selectivity

•

Overhead reduction with coarser granularity of RS/CCH

•

Large expandable BW

•

Sync interference listening for traffic-adaptive config./carrier selection

Traffic characteristics

•

Traffic-adaptive DL/UL resource allocation in TDD

•

Non-uniform & varying traffic load

MAC layer

•

High bit-rate, lot of traffic comes from Internet

•

Mobility management simplification

Coverage characteristics

•

Macro assisted mobility process & traffic steering

•

Small cell groups with discontinuous/isolated coverage

Architecture

•

Low UE power consumption

•

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LIPA/SiPTO

Page 18

LTE-Hi: Enhanced spectrum efficiency • Support of higher order modulation up to 256 QAM 

Usable SINR range is roughly above 20 dB



Up to 40% of terminals may benefit from

Peak rate achieved at 27 dB

256 QAM in indoor scenarios (ITU InH scenario)

• Overhead reduction 

RS overhead (CRS and DMRS) can be reduced in low mobility and wider coherence bandwidths



Control channel overhead can be reduced e.g. by scheduling over multiple subframes



Maintain backward compatibility for legacy terminals



Expected savings are 10-15% Usable range for 256 QAM

• Efficient use of larger available bandwidth 

For interference avoidance among multiple small cells with flexible carrier selection HUAWEI TECHNOLOGIES CO., LTD.

Page 19

LTE-Hi: Traffic Adaptive DL/UL Resource Allocation Adaptive DL/UL configurations based on traffic asymmetry in Hotspot and Indoor scenario  Isolated cell-groups, e.g. shopping mall, airport, etc.  Heterogeneous networks  Inter-cell interference cognition and mitigation are needed  May introduce extreme DL/UL configurations for higher efficiency of traffic adaption 

Hotspot area 2 (UL dominant)

S

UL

UL

UL

UL

UL

UL

1DL: 1S:3UL

DL

S

UL

UL

UL

DL

S

UL

UL

UL

3DL: 2S:5UL

DL

S

UL

UL

UL

DL

S

UL

UL

DL

2DL: 1S:2UL

DL

S

UL

UL

DL

DL

S

UL

UL

DL

6DL: 1S:3UL

DL

S

UL

UL

UL

DL

DL

DL

DL

DL

3DL: 1S:1UL

DL

S

UL

DL

DL

DL

S

UL

DL

DL

Page 20

UL

7DL: 1S:2UL

DL

S

UL

UL

DL

DL

DL

DL

DL

DL

8DL: 1S:1UL

DL

S

UL

DL

DL

DL

DL

DL

DL

DL

9DL: 1S:0UL

DL

S

DL

DL

DL

DL

DL

DL

DL

DL

May introduce extreme DL/UL configurations for higher efficiency of traffic adaption

Hotspot area 1 (DL dominant) HUAWEI TECHNOLOGIES CO., LTD.

UL

DL resources increasing

UL

0DL: 1S:9UL

LTE-Hi: Neighbor configuration detection between nodes •

Motivation 

Dynamic cell re-configurations adapt to time-varying traffic load



Autonomous detection allows to quickly react to a changing environment and avoid interference between LPNs

•

Detectable

Highly efficient detection mechanism with network

Neighbor configuration & Interference condition

synchronization 

Dynamic carrier switching TDD DL/UL re-configuration

Support detecting LPN configuration by Configuration Detection & Application

other LPNs and UEs

•

Reconfigurable



Synchronized detection slot in the frame structure



Configuration detection RS and procedure

Configuration detection application: 

Flexible carrier selection in larger bands (FDD/TDD)



Flexible DL/UL resource allocation (TDD)



Flexible power control (FDD and TDD)

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Flexible intererence avoidance Carrier selection Power on/off DL/UL resource allocation

Page 21

LTE-Hi: HetNet Layout with CP/UP Splitting and Multi-Stream Aggregation Multi-layer network using multiple frequency carriers coverage layer + capacity layer

Slim eNB

F2

Capacity layer

F1

Coverage layer Central controller: Control/configure /management slim eNBs

CP

Coordinated multi-layer mobility management and traffic steering: increased user throughput and reduced interference

UP

Realistic backhauls between TPs: Non-zero latency and limited bandwidth

Multi-stream aggregation for easy HetNet management and RRM: • Provide control and management information for slim LTE AP • Assist UE inter-freq. RRM measurement trigger for power consumption reduction • Solve interference problem among slim eNBs HUAWEI TECHNOLOGIES CO., LTD.

Page 22

LTE Hi: LTE Hotspot & Indoor Enhancement

with High-Frequency, High-BW , High performance

• Strategic spectrum at 3.5GHz for global wideband dedicated indoor/hotspot access Separated freq. band for Macro coverage layer and Hotspot Capacity layer Throughput



WiFi 2.4GHz

Hot spots

LTE AP 3.5 GHz LTE 700/800MHz

Urban & Suburban G/U/L 1800 / 2100MHz / 2.6GHz

National wide G/U 900MHz

• LTE-Hi Air-Interface Optimization for indoor/hotspot scenarios 

Stand alone support in Hotspot AP



DL enhancements with 256 QAM, overhead reduction and interference avoidance within a larger available bandwidth for Hotspot scenario



Traffic-adaption with via synchronized resource/interference sensing



TDD flexible DL/UL configuration with new larger DL/UL transmission ratio

• Easy network management and architecture 

Internet

CP/UP splitting to support a slim small cell layer with macro assistance on configuration/interference mobility management and traffic steering HUAWEI TECHNOLOGIES CO., LTD.

Page 23

We are looking forward …

Thank you www.huawei.com

Innovation: Open, Cooperation, Win-win

HUAWEI TECHNOLOGIES CO., LTD.

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