64481984 11 LTE radio network planning introduction (1)

Security Level:

LTE Radio Network
Planning Introduction
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Huawei Confidential


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Huawei Confidential

Page 2


Huawei LTE Radio Network Planning Main Steps
Dimensioning

Preplanning

Inputs: Coverage, Capacity &
Service Requirement
Outputs: eNodeB coverage
radius and site numbers
based on capacity calculation

Inputs: Calculated coverage radius, digital

Detailed Planning

map and subscriber distribution information

Outputs: Preliminary eNodeB numbers

Inputs: Coverage target and site survey result
Outputs: Actual site location and engineering parameters

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Page 3


Detail LTE Radio Network Planning
Preparation

Agreement
achieved by
the operator
and Huawei

n Coverage area (Dense urban, Urban, Suburban )
n Quality objective (QoS criteria)
n Capacity requirement (Subscriber, traffic model)
n Link budget parameters (Penetration loss, Propagation model)

Huawei deliver
nBackground Interference Test (optional)
n Propagation model tuning (optional)

n Site location/ RF parameters configurations
n Search ring specifications
n prediction & Simulation
n Cluster definition for project management

Detailed Planning

n Link budget
n Capacity dimensioning
n Site numbers/configuration
n Cell radius in each morphology
n Network development solution

Nominal
Planning

n Site survey/candidate site search
n Neighbor cell configuration
nCell parameters configuration
n Algorithm configuration

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The output of
dimensioning is
important criteria to
assess RNP solution

The operator provides:
Naming conventions
Existing sites information

Network Deployment

Page 4


LTE RNP Output Overview
Input

Output
Site Type

Coverage Requirement
-- Coverage Area
-- Polygon Definition

Power/Channel

-- Cell Edge Throughput
-- Coverage Probability
…

eNodeB Number

Capacity Requirement
Active Users

-- Frequency bandwidth
-- Subscriber forecast
-- Traffic Model
…

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S1&X2 Throughput

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Page 5


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning
Coverage Dimensioning
Capacity Dimensioning
Active User Dimensioning
S1&X2 Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Page 6


LTE Radio Network Dimensioning Flow
Start
Coverage
Requirement

Link Budget
Cell Radius

Capacity
Requirement

Capacity Dimensioning

Satisfy Capacity
Requirement?

No

Adjust eNodeB
Number

Yes
Active User/S1&X2
Dimensioning
eNodeB
Amount&Configuration
End

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Page 7


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning
Coverage Dimensioning
Capacity Dimensioning
Active User Dimensioning
S1&X2 Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Page 8


LTE Coverage Dimensioning Flow
n Aim of coverage dimensioning
- to obtain the cell radius
- to estimate eNodeB number for coverage requirement
Start
Link Budget
Propagation
Model

Cell Radius
eNodeB Coverage Area

Total Coverage Area/
eNodeB Coverage Area

eNodeB Number

End
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Page 9


LTE Link Budget Procedure – Uplink
Tx
Power

Other Gain

Slow fading margin

UE Antenna Gain

Gain
Margin

Interference margin

Loss

Body Loss

Penetration Loss

Power level

Max. Allowed Path Loss

EIRP

Path Loss
Cable Loss
BTS Ant Gain

Link segments
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Page 10

Rx
Sensitivity


LTE Link Budget Procedure – Downlink

Other Gain

Gain

Slow fading margin

Margin
Cable Loss

Loss

Interference margin
BTS Ant
Gain

EIRP
Power level

Max. Allowed Path Loss

Tx
Power

Objective: Max.
Path Loss

Allowed Path Loss

Penetration Loss

Body Loss

UE Ant Gain

Link segments
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Page 11

Rx
Sensitivity


Coverage Comparison b/w HSPA+ and LTE
Downlink Cell Edge Throughput Comparison

Cell Edge Throughput(kbps)

8000

n

LTE 2.6G has much better coverage in
DL than HSPA+ 2.1G; But HSPA+ 2.1G
has better coverage in UL than LTE
2.6G.

n

LTE can reuse existing 3G sites, no
additional LTE alone sites are required
at the beginning of LTE deployment.

7056

7000
6000
5000
3634

4000
2690

3000

2528
1397

2000
1000

256

643

512

1024

Uplink Cell Radius Comparison

HSPA+2.1G@5MHz 0
LTE2.6G@5MHz

0.56(km)

0.7

0.36(km)

Cell Radius

0.67
0.59

0.6

Cell Radius(km)

LTE2.6G@20MHz

0.90(km)

0.5

0.49

0.46 0.46

0.41 0.41
0.35 0.35

0.4

0.3
0.2
0.1

HSPA+2.1G@5MHz 0
LTE2.6G@5MHz
LTE2.6G@20MHz

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128kbps

256kbps

Cell Edge Throughput

Page 12

512kbps


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning
Coverage Dimensioning
Capacity Dimensioning
Active User Dimensioning
S1&X2 Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Page 13


LTE Capacity Dimensioning Flow
Start
Configuration
Analysis

Cell Average
Throughput Calculation

Traffic Model
Analysis

Subscribers Supported
per Cell
eNodeB Number
(initialized by Coverage Dimensioning)

Total Subscribers

Satisfy Capacity
Requirement?

No

Yes
eNodeB Number

End

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Page 14

Adjust eNodeB
Number

LTE Cell Average Throughput Calculation
Input

Output

Scenario Parameters

－ Morphology
－ Sectorization
－ Bandwidth
…

MC Parameters
－ snapshot numbers
－ Schedule Strategy
…

Cell Parameters

Cell Average
Throughput

MonteCarlo
Simulation

－ Carrier Frequency
－ Carrier power
…

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LTE Cell Average Throughput
n LTE 2600MHz Cell Average Throughput with different bandwidth
Frequency

Bandwidth

5MHz

10MHz
2600MHz
15MHz

20MHz

Scenario

Cell Average Throughput Peak Throughput（Multi-users）
DL(Mbps)

UL(Mbps)

DL(Mbps)

UL(Mbps)

Urban

8.173

4.715

43

39

Suburban

6.266

3.342

43

39

Urban

16.918

9.761

86

55

Suburban

12.971

6.918

86

55

Urban

25.546

14.739

129

126

Suburban

19.587

10.446

129

126

Urban

34.344

19.814

172

165

Suburban

26.332

14.044

172

165

n Capacity comparison with different frequency band
LTE Cell Average Throughput (Urban)
Frequency Band (MHz)

Bandwidth (MHz)

DL (Mbps)

UL (Mbps)

2600

20

34.344

19.814

1800

20

34.719

21.675

800

20

35.218

24.704

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Page 16


Capacity Comparison b/w HSPA+ and LTE
UL Cell Average Throughput(Mbps)
20.00
15.00
10.00
5.00
0.00
HSUPA 10ms

HSUPA 2ms

HSUPA 16QAM

LTE 5 MHz

LTE 10MHz

LTE 20MHz

DL Cell Average Throughput(Mbps)
LTE 20MHz
35.00
30.00
25.00

HSPA+
(64QAM)

20.00
15.00
10.00

HSPA
(16QAM)

HSPA+
(MIMO+64QAM)
HSPA+
(MIMO)

LTE 10MHz

HSPA+
(DC+64QAM)

HSPA+
(DC+16QAM)

LTE 5MHz

5.00
0.00

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Page 17


Traffic Model Analysis
UL
Traffic Parameters

DL

Bearer Rate
(Kbps)

PPP Session
Time(s)

PPP Session
Duty Ratio

BLER

Bearer Rate
(Kbps)

PPP Session
Time(s)

PPP Session

Duty Ratio

BLER

VoIP

26.90

108

0.6

1%

26.90

108

0.6

1%

Video Phone

62.53

36

1

1%

62.53

36

1

1%

Video Conference

62.53

1800

1

1%

62.53

1800

1

1%

IMS Signalling

15.63

7

0.2

1%

15.63

7

0.2

1%

Web Browsing

62.53

1800

0.05

1%

250.11

1800

0.05

1%

File Transfer

140.69

600

1

1%

750.34

600

1

1%

P2P file sharing

250.11

1200

1

1%

750.34

1200

1

1%

User Behavior

Traffic Penetration Ratio

BHSA

Video Conference

0.00%

IMS Signalling

Busy Hour Throughput Per User (bps)
UL

DL

0.2

6316

6316

0.00%

5

31

31

Web Browsing

100.00%

0.4

632

2526

File Transfer

20.00%

0.2

4737

25264

Email

10.00%

0.2

395

632

P2P file sharing

20.00%

0.4

33685

101055

-

-

8355

27853

Total

Traffic Model varies from different operators which is mainly used to
calculate Busy Hour Throughput per User.
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Page 18


Traffic Model Comparison b/w LTE and UMTS
Standard UMTS Traffic Model

Standard LTE Traffic Model

Service type

Unit

UL Throughput

DL Throughput

Unit

Value

Voice

Erl/BH

0.0400

0.0400

VOIP

mErl/BH

40

CS64

Erl/BH

0.000320

0.000320

Video Phone

mErl/BH

10

PS64

Kbit/BH

460.80

69.12

Other PS Traffic

Kbps

50

PS128

Kbit/BH

0.00

1105.92

Total UL Traffic

Kbps

11.27

PS384

Kbit/BH

0.00

207.36

Total DL Traffic

Kbps

41.27

CS over HSPA

Erl/BH

0.0000

0.0000

VoIP over HSPA

Erl/BH

0.0000

0.0000

HSPA

Kbit/BH

5299.20

15897.60

n UMTS traffic model is much more complex than that of LTE because there are many

kinds of CS and PS services in UMTS.
n There are only PS services (even VOIP and Video Phone) in LTE so that LTE traffic
model can be very simple;

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LTE Capacity Dimensioning Case Study
Step 1

DL Cell Average Capacity

a 34.344Mbps/cell

Step 2

Designed DL Cell Loading

b 50% Cell loading assumed

Step 3

Designed DL Cell Capacity

c = a x b =17.127Mpbs

Step 4

Peak to Average Ratio

Step 5

Average DL BH Throughput/sub.

e 20kbps

Step 6

Sector number per site

f 3 sectors

Step 7

Subscribers supported in a site

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Assumptions:
• S111

• 20MHz
• 20kbps per user
in DL
• Peak to Average
Ratio 20% in BH

d 20%

g = c * f / (1+d)/e = 2140 subscribers

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Page 20


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning
Coverage Dimensioning
Capacity Dimensioning
Active User Dimensioning
S1&X2 Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Page 21


Active User Dimensioning
Active User Definition
§

Active users is also called RRC-Connected Users which refer to the users having a RRC
connection with the network

§

Directly influences eNodeB quotation and controlled by software license

PPP
Session
Data call (session) WWW

Data call (session) WWW

•

BHCA: Busy Hour Session
Attempt

•

PPP Time: Duration of PPP
Session

•

Ratio of RRC to PPP:
Percentage of RRC during
one PPP session

•

Number of User: Number of
users using service i

time
RRC_Connected
(Active User)

RRC

RRC1

RRC2

RRC3
RRC_Idle

Packets

time

Packet2
Packet1

Packet3

time

Number _ ActiveUser _ i = BHSA * PPP _ Session _ Time * RatRrcToPPP * Number _ User / 3600
Total _ Number _ ActiveUser = ∑ Number _ ActiveUser _ i * Percentage _ Service _ i
i

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Active User Dimensioning Case Study
User Parameter

scene

Dense Urban

Urban

DL

UL

Percenta
ge

RatRrcT
oPPP

RatPack
ToRrc

Ave
data
rate in
packet(
kbps)

RatRrcT
oPPP

RatPack

ToRrc

Ave data
rate in
packet(k
bps)

UE Type

BHCA

PPPTime
(s)

Handset

1.4

300

70%

1

0.4

128

1

0.4

128

Data Card

2.5

300

20%

0.8

0.8

500

0.8

0.5

100

Wireless DSL

1

2400

10%

0.9

0.8

300

0.9

0.3

100

Handset

1.3

80

50%

1

0.4

50

1

0.4

50

Data Card

2

300

30%

0.8

0.8

220

0.4

0.8

100

Wireless DSL

0.8

1800

20%

0.6

0.7

300

0.3

0.7

100

Dense Urban
Parameter
Throughput/User/BH (kbps)

Urban

DL

UL

DL

UL

31.9

7.6

17.4

3.6

number of subscribers in one Site

398

800

Num Active User

70

82

0.18

0.10

Active Ratio
Ave data rate /Active User (kbps)

181.5

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169.8

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=Min (Total number of Subscribers /
Total number of eNodeBs, maximum
subscribers supported considering
traffic requirement)

34.8

Page 23


Active User Dimensioning Case Study
User Behavior

Traffic
Penetration
Ratio

BHSA

PPP Session
Time(s)

RatRrcToP
PP

Active Time

VoIP

100.00%

1

108

1

108.00

Video Phone

100.00%

1

36

1

36.00

Video Conference

0.00%

0.2

1800

1

0.00

Real Time Gaming

0.00%

0.2

1800

0.8

0.00

Streaming Media

0.00%

0.2

3600

0.8

0.00

IMS Signalling

0.00%

5

7

0.8

0.00

Web Browsing

100.00%

0.4

1800

0.8

576.00

File Transfer

20.00%

0.2

600

0.8

19.20

Email

10.00%

0.2

50

0.8

0.80

P2P File Sharing

20.00%

0.4

1200

0.8

76.80

Active Time per Subscriber

-

-

-

-

816.80

Active Factor per Subscriber

-

-

-

-

0.23

Max. Subscriber Number Supported per Site

-

-

-

-

860.00

Actual Subscriber Number per Site

-

-

-

-

135.00

Active User Number per Site

-

-

-

-

30.63

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Page 24


Agenda
1

LTE RNP Overview

2

LTE RNP Dimensioning
Coverage Dimensioning
Capacity Dimensioning
Active User Dimensioning
S1&X2 Dimensioning

3

LTE Co-location Solution

4

LTE Deployment Strategy

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Page 25