LTE Frequency Planning V2.0

HUAWEI TECHNOLOGIES Co., Ltd. Huawei Confidential

2012-1-16

LTE Frequency Planning

www.huawei.com

Huawei Confidential

Security Level: Open

Frequency Planning

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

Part 1. Key factor for frequency planning

Part 2. LTE typical networking mode

Part 3. Different networking mode

Part 4. Co-existence between

CONTENTS

Huawei Confidential Page 2


LTE typical networking mode

Part 3. Different networking mode Comparison

existence between WiMAX & LTE


Global Spectrum Distribution

USA700MHz,AWS

Europe800MHz,2.5GHz

• 3GPP 36.101 defined the frequency range 700MHz ~ 2.6GHz

• Each regional and national distribution of the spectrum is different, such as the Asia

the 700MHz ,2.1GHz 2.3GHz 2.5GHz, in Europe is

700MHz

ME2.5GHz

LA2.5GHz,AWS


istribution of LTE

800MHz,2.5GHz

Japan800M/1.5G/2.5GHz

Asia Pacific2.1/2.3/2.5GHz

36.101 defined the frequency range 700MHz ~ 2.6GHz

regional and national distribution of the spectrum is different, such as the Asia-Pacific is

in Europe is 800MHz and 2.5GHz and the United States is

China2.3G&2.5GHz

2.5GHz

Australia1.8GHz/2.3GHz


Flexible and Variable Channel

CDMA 1.2288MHz

WCDMA 3.84MHz

GSM 200KHz

Network Planners can select bandwidth flexible base on the frequency resource

and capacity requirement

Network Planners can select bandwidth flexible base on the frequency resource

and capacity requirement

LTE channel bandwidth can be 20MHz depend on

The flexible and variable channel bandwidth allocation LTE and traditional 2G/3G


Data

400 chips

hannel Bandwidth

1.4MHz - 20MHz

can select bandwidth flexible base on the frequency resource

capacity requirement

can select bandwidth flexible base on the frequency resource

capacity requirement

LTE channel bandwidth can be set between 1.4MHz to 20MHz depend on actual demand

allocation is one of the major differences between


Frequency Reuse Mode

The network is divided into clusters of N cells, S sector per cell, and

N×S×K

The overall balance between frequency resource and system interference is

needed when select the frequency reuse mode




sector per cell, and K different frequency allocations per cell.

Red lines in the figure indicates thesame frequency interference direction.






Frequency Duplex Mode

• Lower requirement of synchronization, suitable for wide coverage

• Smaller Doppler frequency shift than TDD, better mobility performance

• Synchronously

lower than TDD

• Lower system overhead, No extra time reserved needed between

transmit and

• More convenient options, can make use of scattered spectrum resources

• More suitable for asymmetry transmission, high spectral efficiency

• More easy to appl

• Same frequency for UL and DL, the power control is more exactly

• Can support BF technology

• CMCC and some operators in India &Japan are focusing

U Uplink D Downlink

FDD

D D D D

TDD

D D D D

UU U U U U

UU

DD


ode - FDD Vs TDD

Advantage of FDD Mode

Advantage of TDD Mode

requirement of synchronization, suitable for wide coverage

Doppler frequency shift than TDD, better mobility performance

Synchronously transmit and receive, the system delay is a magnitude

lower than TDD

system overhead, No extra time reserved needed between

transmit and receive

convenient options, can make use of scattered spectrum resources

suitable for asymmetry transmission, high spectral efficiency

easy to apply the new technology like smart antenna

frequency for UL and DL, the power control is more exactly

Can support BF technology

CMCC and some operators in India &Japan are focusing on the TDD LTE


Inter-system Reserved Guard

• LG, LU, LL guard band analyses is according to the latest specification of R4

3GPP system, the LC should reference to 3GPP protocol and our UC test results

• The required guard band is associated with specific scenario,

the specific situation


Reserved Guard Band Strategy

analyses is according to the latest specification of R4-092109. Since CDMA is not

3GPP system, the LC should reference to 3GPP protocol and our UC test results equivalent analysis

specific scenario, the actual application needs further analysis of


E-UTRA Band Uplink

1 1920MHz–1980MHz

2 1850MHz–1910MHz

3 1710MHz–1785MHz

4 1710MHz–1755MHz

5 824MHz–849MHz

6 830MHz–840MHz

7 2500MHz–2570MHz

8 880MHz–915MHz

9 1749.9MHz–1784.9MHz

10 1710MHz–1770MHz

11 1427.9MHz–1452.9MHz

12 698MHz–716MHz

13 777MHz–787MHz

14 788MHz–798MHz

17 704MHz–716MHz

FDD LTE Bandwidth Distribution


Downlink Duplex Mode

2110MHz–2170MHz FDD




869MHz–894MHz FDD

875MHz–885MHz FDD


925MHz–960MHz FDD

1844.9MHz–1879.9MHz FDD


1475.9MHz–1500.9MHz FDD

728MHz–746MHz FDD

746MHz–756MHz FDD

758MHz–768MHz FDD

734MHz–746MHz FDD

FDD LTE Bandwidth Distribution


TDD LTE Bandwidth Distribution

E-UTRA Band Uplink Downlink

33 1900 MHz –1920 MHz 1900 MHz

34 2010 MHz –2025 MHz 2010 MHz

35 1850 MHz –1910 MHz 1850 MHz

36 1930 MHz –1990 MHz 1930 MHz

37 1910 MHz –1930 MHz 1910 MHz

38 2570 MHz –2620 MHz 2570 MHz

39 1880 MHz –1920 MHz 1880 MHz

40 2300 MHz –2400 MHz 2300 MHz

• 2.3/2.5 GHz: Preferred bands for TD-LTE. Typical bandwidth resource

• 1.9/2.0 GHz: Some bands which are applicable to TD-LTE are mainly used in

• Most bands lower than 1 GHz are not applicable to TD


TDD LTE Bandwidth Distribution

Downlink Duplex Mode

1900 MHz –1920 MHz TDD








bandwidth resource > =20 MHz

LTE are mainly used in Europe

Most bands lower than 1 GHz are not applicable to TD-LTE.


Satisfying The Minimum

MCSQPSK QPSK QPSK QPSK QPSK

0.12 0.16 0.25 0.37 0.52

SINR (dB)

-5.10 -4.34 -2.70 -0.64 1.48

DL SINR of 2×2 SFBC ETU3 (Source :Huawei Link Simulation Result)

• Both uplink and downlink minimum SINR should be

considered

•The SINR of system requirement should be less

than the cell edge SINR of actual commercial

network ( or simulation result) for seamless network

planning


inimum SINR Required

16-QAM 16-QAM 64-QAM 64-QAM 64-QAM 64-QAM

0.48 0.64 0.51 0.65 0.75 0.93

6.51 9.32 11.03 14.27 17.00 23.33

Link Simulation Result)

Simulation example：：：：Networking mode 1××××3××××1


CONTENTS


Part 2. LTE typical networking mode

Part 3. Different networking mode

Part 4. Co-existence between







1××××3××××1

1××××3××××1 Mode Advantage

1××××3××××1 Mode Disadvantage

• High Spectrum efficiency over the entire

network , high throughput per sector

• No complex Scheduling Algorithm , less system

overhead

• High interference in the same band and hard to

control

• Hard to realize seamless network due to the low

cell edge throughput

Applicable to Operators of limited frequency resources

where network coverage can be non continuous

Applicable to Operators of limited frequency resources



F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

F1

frequency resources or at the initial phase


frequency resources or at the initial phase


Means one S111 site


SFR (Soft Frequency Reuse)1

SFR 1××××3××××1 ICIC Introduction

SFR 1××××3××××1 Mode Characteristic

• DL&UL ICIC: District cell center using 2/3 of the

bandwidth and the cell edge using 1/3 bandwidth;

• Difference cell edge spectrum is stagger;

• The transmitting power of center bandwidth is lower

than the cell edge transmitting power

• Decrease the interference by using ICIC

• High Spectrum efficiency

• Include dynamic ICIC and static ICIC

SFR 1×3×1 is the mode recommended by HUAWEISFR 1×3×1 is the mode recommended by HUAWEI


SFR (Soft Frequency Reuse)1××××3××××1

transmitting power of center bandwidth is lower

1 is the mode recommended by HUAWEI1 is the mode recommended by HUAWEI

SFR 1×3×1

2

3

6

5

7

4

2

3

5

9

11

4

7

8

6

Frequency

Cell 1,4,7 Power

Frequency

Cell 2,5,8 Power

Frequency

Cell 3,6,9

Power


WiMAX FFR (Fractional Frequency Reuse ) 1××××

LTE SFR (Soft Frequency Reuse)1××××3××××1

PowerPowerPowerPower



SFR 1××××3××××1 Vs FFR 1××××


××××3××××1 Similarity

Difference

• Reduce interference by time or

frequency division

• Cell center using more bandwidth

resource, the cell edge using 1/3

bandwidth

• FFR is based mainly on time division;

while SFR is based on frequency division

• With FFR, the cell center will be using

all sub-carriers; SFR only allow the use

of about 2/3 bandwidth at cell center

• FFR sub channel generally fixed at 1/3

of overall bandwidth ; SFR is adjustable

at or around 1/3 BW by using dynamic

ICIC

FrequencyFrequencyFrequencyFrequency



Sector 0Sector 0Sector 0Sector 0



××××3××××1


1××××3××××3

1××××3××××3 Mode Advantage

1××××3××××3 Mode Disadvantage

• Make full use of the scattered spectrum resources

• Same frequency interference low providing effective

coverage

• High cell throughput

• Low Spectrum efficiency

• More Spectrum resource needed

Applicable for the operator with rich spectrum resource or scattered Applicable for the operator with rich spectrum resource or scattered


rich spectrum resource or scattered spectrumrich spectrum resource or scattered spectrum

Means one S111 site

F3

F2

F1

F3

F2

F1

F3

F2

F1

F3

F2

F1

F3

F2

F1

F3

F2

F1

F3

F2

F1


CONTENTS

� Part 1. Key factor for frequency planning

� Part 2. LTE typical networking mode

� Part 3. Different networking mode

� Part 4. Co-existence between







Different Networking Interference Comparison - 1××××3××××3 Vs 1××××3××××1

Source：Huawei System Simulation Result (Based on 100% loading, outdoor scenario)

The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1and 1×3×3and 1×3×3and 1×3×3and 1×3×3

0

0.2

0.4

0.6

0.8

1

-10 0 10 20 30SINR

CDF

1×3×1 1×3×3


etworking Interference Comparison

Result

The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1The downlink service channel SINR of 1×3×1

30 40

1××××3××××3

1××××3××××1

• 90％ area: SINR>8dB

• 90％ area: SINR>-2dB


Throughout Comparison When ICIC ON and OFF

ICIC is introduced into 1×3×1 planning to reduce inter cell interference. Higher cell edge service throughput enhances users experience.

Power distribution parameters (x, y) : indicates the cell center user Pa value and cell edge user Pa values


Throughout Comparison When ICIC ON and OFF

• ICIC reduce the center

users SINR to improve the

cell edge user's SINR and

enhance the probability of

cell edge coverage.

• From downlink throughput

perspective, ICIC decrease

the average cell throughput

by 10% , but improve the cell

edge user throughput by

20% ~ 30%

Source：Huawei System Simulation Result

SFR(ICIC) improve the cell edge

user’s throughput

1 planning to reduce inter cell interference. Higher cell edge service throughput enhances users experience.

Power distribution parameters (x, y) : indicates the cell center user Pa value and


CONTENTS

� Part 1. Key factor for frequency planning

� Part 2. LTE typical networking mode

� Part 3. Different networking mode

� Part 4. Co-existence between







WiMAXWiMAXWiMAXWiMAX & FDD LTE Co& FDD LTE Co& FDD LTE Co& FDD LTE Co----existence: existence: existence: existence:

5M GD

f0

TDD WiMAXLTE

BW

Offset

RBW

Guard Band + Narrow Band Filter

• Receive sensitivity decrease by 1dB.• Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

• Guard and antenna isolation requirement

Antenna horizontal Isolation

Guard Band(MHz)

Isolation requirement(dB)

Only Antenna Isolation (Meter)

5 66.86

10 61.7


existence: existence: existence: existence: CoCoCoCo----site Scenario site Scenario site Scenario site Scenario

Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.


Antenna vertical Isolation

OR

10m

0.7m

Antenna verticalIsolation (Meter)

Only Antenna horizontal Isolation (Meter)

0.7 10

0.5 5


5M GD

f0

TDD WiMAXLTE

BW

Offset

RBW


• Receive sensitivity decrease by 1dB.• Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

• Guard and sites isolation distance requirementGuard Band

(MHz)Isolation

requirement(dB)

5 76.1

10 70.1

WiMAXWiMAXWiMAXWiMAX & FDD LTE Co& FDD LTE Co& FDD LTE Co& FDD LTE Co----existence: existence: existence: existence:


Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

Guard and sites isolation distance requirement

Keep LTE & WiMAX Inter-site distance

LTE Site WiMAX Site

Inter-site Distance

requirement(dB) WiMAX & LTE Sites Isolation (Meters)

60

32

existence: existence: existence: existence: Non CoNon CoNon CoNon Co----site Scenario site Scenario site Scenario site Scenario


Huawei Recommend 3 WiMAX

Synchronized both UL/ DL , Frame synchronization or Symbol puncturing.

WiMAX DL/UL

configuration

TD-LTE DL/UL

configuration/ Special

frame configuration)

WiMAX Performance

35:12 3:1 /(9:3:2) No impact to

29:18 2:2 /(10:2:2)

The last two symbols of WIMAX downlink

need to be punctured, about

capacity loss

32:15 3:1 /(3:9:2) No impact to

☺☺☺☺

☺☺☺☺

☺☺☺☺

WiMAXWiMAXWiMAXWiMAX& TDL Co& TDL Co& TDL Co& TDL Co----existence: existence: existence: existence:

• Guard band &sites isolation is not needed due to existing system


WiMAX/ TD-LTE configuration

synchronization or Symbol puncturing.

WiMAX Performance TD-LTE Performance

No impact to WiMAX network

LTE DwPTS length is changed

to 9os, about 2% DL capacity

loss (compare with special

frame configuration 7:10:2:2)

The last two symbols of WIMAX downlink

need to be punctured, about 6% DL

capacity loss

No impact to LTE

No impact to WiMAX network

LTE DwPTS length is changed

to 3os, about 13% DL capacity

loss (compare with special

frame configuration 7: 10:2:2)

Huawei Recommendation☺☺☺☺

existence: existence: existence: existence: Synchronization ScenarioSynchronization ScenarioSynchronization ScenarioSynchronization Scenario

Guard band &sites isolation is not needed due to existing system ynchronization


5M GD

f0

TDD WiMAXLTE

BW

Offset

RBW


• Receive sensitivity decrease by 1dB as reference.• Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

• Guard and antenna isolation requirement


Guard Band(MHz)

Isolation requirement(dB)

Only Isolation (Meter)

5 66.86

10 61.7

WiWiWiWi MAX& TDL CoMAX& TDL CoMAX& TDL CoMAX& TDL Co----existence: existence: existence: existence:


Receive sensitivity decrease by 1dB as reference.Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.


Antenna vertical Isolation

OR

10m

0.7m

Only Antenna verticalIsolation (Meter)

Only Antenna horizontal Isolation (Meter)

0.7 10

0.5 5

existence: existence: existence: existence: CoCoCoCo----site + Nonsite + Nonsite + Nonsite + Non----SynchronizationSynchronizationSynchronizationSynchronization


5M GD

f0

TDD WiMAXLTE

BW

Offset

RBW


• Receive sensitivity decrease by 1dB as reference.• Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

• Guard and sites isolation distance requirementGuard Band

(MHz)Isolation

requirement(dB)

5 76.1

10 70.1

WiMAXWiMAXWiMAXWiMAX & TDL& TDL& TDL& TDL CoCoCoCo----existence: Non Coexistence: Non Coexistence: Non Coexistence: Non Co


Receive sensitivity decrease by 1dB as reference.Analysis is based on Huawei actual LTE & WiMAX RRU with narrow band filter.

Guard and sites isolation distance requirement

Keep LTE & WiMAX Inter-site distance

LTE Site WiMAX Site

Inter-site Distance

requirement(dB) WiMAX & LTE Sites Isolation (Meters)

60

32

existence: Non Coexistence: Non Coexistence: Non Coexistence: Non Co----Site + Non Synchronization Site + Non Synchronization Site + Non Synchronization Site + Non Synchronization

Thank You

www.huawei.com

Copyright©2008 Huawei Technologies Co., Ltd. All Rights Reserved. The information contained in this document is for reference purpose only, and is subject to

change or withdrawal according to specific customer requirements and conditions.

Thank You

www.huawei.com

Copyright©2008 Huawei Technologies Co., Ltd. All Rights Reserved. The information contained in this document is for reference purpose only, and is subject to

change or withdrawal according to specific customer requirements and conditions.

LTE Frequency Planning V2.0

Documents

f0bw offset

antenna horizontal

antenna vertical

narrow band

scattered

soft frequency

lte sites

cell edge