8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 1/13

1 © Nokia Siemens Networks RA41208EN40GLA1

LTE RPESSLTE TDD Radio Capacity Planning

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 2/13

3 © Nokia Siemens Networks RA41208EN40GLA1

Index• LTE/EPC Overview

• LTE Air Interface

•  Air Interface Overheads

• RRM overview

• LTE Link Budget

• Radio Planning  – Coverage Planning Cell Range

• Radio Planning – Capacity

• LTE Performance Simulations

• NSN LTE Solution

• Initial Parameters Planning

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 3/13

4 © Nokia Siemens Networks RA41208EN40GLA1

Module Objectives

 After completing this module, the participant should be able to:

• Evaluate the cell capacity

• Explain the main factors impacting the cell capacity

• 

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 4/13

5 © Nokia Siemens Networks RA41208EN40GLA1

Radio Planning Capacity

Cell Capacity (Throughput)

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 5/13

6 © Nokia Siemens Networks RA41208EN40GLA1

Simulation Assumptions

Parameter/Feature UL DL

Operating Band  2600 MHz 2600 MHz

Transmission power per PRB  Open loop power control; max UE

power 23dBm

0.8 W (for every bandwidth

configuration)

Antenna Scheme  Number of TX antenna = 1Number of RX antenna = 2

Number of TX antenna = 1Number of RX antenna = 2

Hexagonal layout  3 sector layout, 7 sites, 21 cells 3 sector layout, 7 sites, 21 cells

Scheduling  Channel unaware with Round Robin

strategy

Channel aware with Proportional

Fairness

Mean number of users per sector   10 UEs (ISD = 500m)

30 UEs (ISD = 1732m)

60 UEs (ISD = 3000m)

164 UEs (ISD = 9000m)

10 UEs per sector

210 UEs per area

Number of users per TTI  1 (1.4 MHz)

3 (3 MHz)

7 (5 MHz)

10 (10 MHz)

20 (15 & 20 MHz)

1 (1.4 MHz)

3 (3 MHz)

7 (5 MHz)

10 (10 MHz)

20 (15 & 20 MHz)

UE speed  3Km/h 3Km/h

Traffic model Full buffer * Full buffer *

Propagation model  3GPP TR 25.814 (macro cell) 3GPP TR 25.814 (macro cell)

*Full Buffer indicates the cell load is always 100% independent on the number of subscribers in the cell ortheir position in the cell

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 6/13

7 © Nokia Siemens Networks RA41208EN40GLA1

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz

500

1732

3000

9000

Down Link Spectral Efficiency SIMO

UL/DL Spectral Efficiency

Note: Assumption of 100% Load.

0.00

0.10

0.20

0.30

0.40

0.50

0.60

1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz

500

1732

3000

9000

Uplink Spectral Efficiency SIMO

   b  p  s   /   H  z

   b  p  s   /   H  z

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 7/138 © Nokia Siemens Networks RA41208EN40GLA1

UL/DL Cell Throughput to MAPL and Coverage

0.00

2000.00

4000.00

6000.00

8000.00

10000.00

12000.00

14000.00

16000.00

18000.00

400 639 1695 9123

20 MHz FC1 SSF5

15MHz FC1 SSF5

10MHz FC1 SSF5

20 MHz FC2 SSF5

15MHz FC2 SSF5

10MHz FC2 SSF5

   k   b  p  s

TDD RL 15 UL Cell Throughput based on ISD Distance

Comparison of

Frame Configuration 1 (FC1)Special Subframe Configuration (SSF)

5 and 7 Configuration

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

30000.00

35000.00

40000.00

400 639 1695 9123

20 MHz FC1 SSF7

15MHz FC1 SSF7

10MHz FC1 SSF7

20 MHz FC2 SSF7

15MHz FC2 SSF7

10MHz FC2 SSF7

   k   b  p  s

TDD RL 15 DL Cell Throughput based on ISD Distance

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 8/139 © Nokia Siemens Networks RA41208EN40GLA1

DL Cell Throughput to MAPL and Coverage basedon Special Sub-frame Configuration

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

30000.00

35000.00

40000.00

45000.00

400 639 1695 9123

20 MHz FC1 SSF5

15MHz FC1 SSF5

10MHz FC1 SSF5

20 MHz FC2 SSF5

15MHz FC2 SSF5

10MHz FC2 SSF5

   k   b  p  s

TDD RL 25 DL Cell Throughput based on ISD Distance

   k   b  p  s

TDD RL 25 DL Cell Throughput based on ISD Distance

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

30000.00

35000.00

40000.00

45000.00

400 639 1695 9123

20 MHz FC1 SSF7

15MHz FC1 SSF7

10MHz FC1 SSF7

20 MHz FC2 SSF7

15MHz FC2 SSF7

10MHz FC2 SSF7

   k   b  p  s

TDD RL 25 DL Cell Throughput based on ISD Distance

Comparison of

Frame Configuration 1 (FC2)Special Subframe Configuration (SSF)

5 and 7 Configuration

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 9/1310 © Nokia Siemens Networks RA41208EN40GLA1

UL/DL Cell Throughput Based on TDD Frame Type

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

30000.00

35000.00

40000.00

45000.00

466 744 2049 11032

DL Frame Config 2

UL Frame Config 2

DL Frame Config 1

UL Frame Config 1   k   b  p  s

Direct Comparison Frame Config 1 and 2at 20 MHz Special Subframe format 5

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 10/1311 © Nokia Siemens Networks RA41208EN40GLA1

Factors Affecting the Cell Capacity

•  The LTE Cell Capacity (Throughput) depends on:

• Cell Range (Pathloss) – Considered as a variation of the Inter Site Distance (ISD)

 – The effect of larger ISD has been presented in the previous slides

 – The SINR distribution is bad in larger cells which becomes more & more noise limited

• Channel Bandwidth (1.4 MHz ... 20 MHz) –

The best capacity performance can be achieved with wide channel bandwidth due tothe maximum frequency diversity gain 

 – Small Bandwidth configuration are characterized by high system overhead 

• Cell Load  – The values presented so far are for 100% cell load

 – The impact of cell load is based on simulation results

•LTE Features: – MIMO (Multiple Input Multiple Output)

 – Beam Forming Single Stream

 – Beam Forming Dual Stream

 – Scheduling: Proportional Fair  or  Round Robin

See next slides for details

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 11/1312 © Nokia Siemens Networks RA41208EN40GLA1

Impact of Throughput based on frameconfiguration

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 12/13

13 © Nokia Siemens Networks RA41208EN40GLA1

ISD [m] 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz2Tx OLMIMO

Mode 3

2Tx CLMIMO

Mode 4

8Tx SS-LTBF

Mode 7

8Tx DS-HBF

Mode 8

500   0.78 1.04 1.16 1.20 1.22 1.23 20% 30% 34% 64%

1732   0.77 1.04 1.16 1.19 1.22 1.23 16% 24% 28% 56%

3000   0.88 1.08 1.18 1.21 1.24 1.25 10% 15% 18% 45%

9000   0.82 0.91 1.00 1.03 1.05 1.06 10% 15% 18% 45%

DL Spectral Eff iciency [b ps/Hz] 

Beam Forming impact on capacity

• cell capacity sheet

 –gain figures versus 1x2 SIMO

 – basis

existing gain figure of 2x2 CL MIMO

relative cell average TP

updated: LTBF over 8 antennas (LTE493, RL15)

new: Hybrid BF (LTE541, RL25)

2x2 dynamic CL MIMO

8/18/2019 08 02 RA41208EN40GLA1 LTE Radio Planning Capacity

http://slidepdf.com/reader/full/08-02-ra41208en40gla1-lte-radio-planning-capacity 13/13

14 © Nokia Siemens Networks RA41208EN40GLA1

Spectral Efficiency