PDA

View Full Version : lte rf planning



ryuzaki_steven
2012-02-03, 01:02 AM
this book contains about lte rf planning from ********, very usefull document to learn about lte and planning lte

if you like this post, just give thx or rep button, thx :)


Information :The link in the attached file of this message is broken. check other messages in this thread.

aygo
2012-02-03, 01:23 AM
hi
Could u plz provide table of content?
aygo


this book contains about lte rf planning from ********, very usefull document to learn about lte and planning lte

if you like this post, just give thx or rep button, thx :)

ryuzaki_steven
2012-02-03, 01:37 AM
1. HOW TO USE THIS GUIDE............................................................................... 21
1.1. INTRODUCTION ................................................................................................. 21
1.2. DOCUMENT SCOPE ........................................................................................... 22
1.3. QUICK GUIDE TO CONTENTS .............................................................................. 22
2. LTE AIR INTERFACE OVERVIEW AND BASIC SPECTRUM PLANNING........ 24
2.1. INTRODUCTION ................................................................................................. 24
2.2. AIR INTERFACE OVERVIEW ................................................................................ 24
2.2.1. OFDMA .................................................................................................... 24
2.2.2. Number of Subcarriers ............................................................................. 24
2.2.3. Symbol Size ............................................................................................. 25
2.2.4. Subcarrier Types ...................................................................................... 26
2.2.5. Frames ..................................................................................................... 26
2.2.5.1. FDD - Type 1 Frame............................................................................. 27
2.2.5.2. TDD - Type 2 Frame............................................................................. 29
2.2.5.3. FDD-TDD Frame Summary .................................................................. 31
2.2.6. UL Allocation (SC-FDMA)......................................................................... 32
2.2.7. Modulation Techniques ............................................................................ 33
2.2.8. Error Correction ........................................................................................ 33
2.2.9. LTE Overview Summary........................................................................... 33
2.3. BASIC SPECTRUM PLANNING ............................................................................. 34
2.3.1. Operating Bands ...................................................................................... 34
2.3.2. Channel Bandwidths................................................................................. 36
2.3.3. Channel Spacing ...................................................................................... 38
2.3.4. Guard Band Considerations ..................................................................... 41
2.3.5. Additional Spectrum Information .............................................................. 42
2.3.5.1. United States ........................................................................................ 42
2.3.5.2. Outside of the United States ................................................................. 47
2.4. REFERENCES ................................................................................................... 48
3. RF LINK BUDGET.............................................................................................. 49
3.1. INTRODUCTION ................................................................................................. 49
3.2. LTE RF LINK BUDGET....................................................................................... 52
3.2.1. Effective Radiated Power ......................................................................... 53
3.2.1.1. Transmit RF Power ............................................................................... 54
3.2.1.2. Transmit Diversity Gain ........................................................................ 54
3.2.1.3. Tx RF Line Loss.................................................................................... 54
3.2.1.4. Transmit Antenna Gain ......................................................................... 56

LTE RF Planning Guide

Version 1.2 iProtect: Internal Page 5

3.2.1.5. Transmit Adaptive Array Gain............................................................... 57
3.2.2. Effective Receiver Faded Sensitivity ........................................................ 58
3.2.2.1. Thermal Noise ...................................................................................... 59
3.2.2.2. Subcarrier ............................................................................................. 59
3.2.2.3. Noise Figure ......................................................................................... 60
3.2.2.4. Ambient Noise ...................................................................................... 63
3.2.2.5. SNR ...................................................................................................... 63
3.2.2.6. Implementation Margin ......................................................................... 65
3.2.2.7. Fast Fading........................................................................................... 66
3.2.2.8. Receive Diversity Gain ......................................................................... 67
3.2.2.9. HARQ Gain........................................................................................... 68
3.2.2.10. Receive Antenna Gain ........................................................................ 69
3.2.2.11. Rx RF Line Loss ................................................................................. 69
3.2.3. System Gain ............................................................................................. 70
3.2.3.1. Building Loss ........................................................................................ 70
3.2.3.2. Vehicle Loss ......................................................................................... 81
3.2.3.3. Body Loss ............................................................................................. 81
3.2.3.4. Foliage Loss ......................................................................................... 82
3.2.3.5. Interference Margin............................................................................... 83
3.2.3.6. Log Normal Margin ............................................................................... 84
3.2.3.7. Maximum Allowable Pathloss ............................................................... 90
3.3. LIMITING RF LINK.............................................................................................. 90
3.4. SUBSCRIBER TYPES .......................................................................................... 91
3.4.1. Fixed versus Mobile.................................................................................. 91
3.5. BASE STATION TYPES ....................................................................................... 92
3.5.1. Remote Radio Head ................................................................................. 93
3.5.2. Frame Based ............................................................................................ 94
3.6. REFERENCE ..................................................................................................... 95
3.6.1. Watts to dB Conversion............................................................................ 95
3.6.2. Log-Normal Fade Margin.......................................................................... 96
4. RF PROPAGATION MODELS ........................................................................... 97
4.1. INTRODUCTION ................................................................................................. 97
4.2. FREE SPACE .................................................................................................... 98
4.3. HATA ............................................................................................................. 100
4.3.1. Model Equations..................................................................................... 100
4.3.2. Example ................................................................................................. 101
4.3.3. References ............................................................................................. 102
4.4. COST-231 HATA ........................................................................................... 102
4.4.1. Model Equations..................................................................................... 103
4.4.2. Example ................................................................................................. 104
4.4.3. References ............................................................................................. 104

LTE RF Planning Guide

Version 1.2 iProtect: Internal Page 6

4.5. ERCEG-GREENSTEIN....................................................................................... 105
4.5.1. Model Equations..................................................................................... 105
4.5.2. Example ................................................................................................. 106
4.5.3. References ............................................................................................. 107
4.6. COMPARISON OF MODELS ............................................................................... 107
4.7. SEMI-DETERMINISTIC MODELS ......................................................................... 110
4.8. RAY TRACING MODEL...................................................................................... 114
4.9. FACTORS IMPACTING PROPAGATION MODELS ................................................... 114
4.9.1. Frequency .............................................................................................. 114
4.9.2. Antenna Heights ..................................................................................... 116
4.10. LIMITATIONS TO COVERAGE ............................................................................. 120
4.10.1. PRACH Constraints................................................................................ 120
4.10.2. Preamble Generation ............................................................................. 121
4.10.3. Uplink - Downlink Frame Timing............................................................. 123
5. LTE CAPACITY................................................................................................ 125
5.1. LTE FRAME STRUCTURES ............................................................................... 125
5.1.1. FDD Frame Structure ............................................................................. 125
5.1.2. TDD LTE Frame Structure...................................................................... 128
5.2. LAYER 1 OVERHEADS...................................................................................... 129
5.2.1. Downlink Throughput.............................................................................. 131
5.2.2. Uplink Throughput .................................................................................. 140
5.2.3. TDD Capacity ......................................................................................... 144
5.2.4. Other Overhead Messages .................................................................... 146
5.3. PEAK INSTANTANEOUS THROUGHPUT ............................................................... 149
5.4. MAXIMUM SUSTAINABLE THROUGHPUT & RETRANSMISSIONS ............................. 151
5.5. CAPACITY AND MPR AND CINR DISTRIBUTIONS................................................ 152
5.6. MAC SCHEDULER........................................................................................... 153
5.7. REFERENCE CAPACITY FIGURES ...................................................................... 156
5.8. ANTENNA SCHEMES ........................................................................................ 161
5.9. SYSTEM SPECTRAL EFFICIENCY (BPS/HZ)......................................................... 165
5.10. WORKLOAD MODELING.................................................................................... 166
5.11. REFERENCES ................................................................................................. 167
6. RF ANTENNA SYSTEMS ................................................................................ 168
6.1. INTRODUCTION ............................................................................................... 168
6.2. ANTENNA PARAMETERS................................................................................... 169
6.2.1. Antenna Gain ......................................................................................... 169
6.2.2. Physical Size .......................................................................................... 170
6.2.3. Voltage Standing Wave Ratio................................................................. 170
6.2.4. Power Rating .......................................................................................... 171

LTE RF Planning Guide

Version 1.2 iProtect: Internal Page 7

6.2.5. Antenna Polarization .............................................................................. 171
6.2.6. Antenna Beamwidth ............................................................................... 171
6.2.7. Front to Back Ratio................................................................................. 173
6.2.8. Side and Back Lobes.............................................................................. 174
6.2.9. Downtilt................................................................................................... 175
6.2.10. CPE Antenna Variations......................................................................... 184
6.3. SMART ANTENNAS .......................................................................................... 185
7. FREQUENCY REUSE ..................................................................................... 186
7.1. INTRODUCTION ............................................................................................... 186
7.1.1. Resource Block Group Reuse Sub-Pattern ............................................ 186
7.2. REUSE PATTERNS........................................................................................... 187
7.2.1. 1x3x1...................................................................................................... 187
7.2.2. 1x3x3...................................................................................................... 188
7.3. CARRIER TO INTERFERENCE PLUS NOISE RATIO ................................................ 190
7.4. LTE METHODS FOR REDUCING LOW CINR IMPACT ........................................... 191
7.4.1. Resource Block Group Assignments ...................................................... 191
7.4.2. Frequency Selective Scheduling ............................................................ 191
7.4.3. Inter-Cell Interference Coordination (ICIC) ............................................. 191
7.5. METHODS TO REDUCE CO-CHANNEL INTERFERENCE ......................................... 193
8. INTER SYSTEM INTERFERENCE .................................................................. 195
8.1. INTRODUCTION ............................................................................................... 195
8.1.1. Background ............................................................................................ 195
8.1.2. Controlling Inter-System Interference ..................................................... 196
8.1.3. Interference Mechanism: OOBE and Overload ...................................... 196
8.1.4. Coexistence with WiMAX ....................................................................... 197
8.2. REFERENCES ................................................................................................. 203
9. INTER-TECHNOLOGY ANTENNA SHARING ................................................. 204
9.1. INTRODUCTION ............................................................................................... 204
9.2. INTER-MODULATION......................................................................................... 206
9.2.1. Nonlinear Junctions ................................................................................ 207
9.2.2. Harmonics .............................................................................................. 207
9.2.3. Inter-modulation mixing products ........................................................... 208
9.3. GATHERING CUSTOMER INFORMATION.............................................................. 211
9.3.1. Legacy Technology Configuration .......................................................... 212
9.3.2. LTE Requirements.................................................................................. 212
9.4. DETERMINE GEOGRAPHICAL REGION................................................................ 213
9.4.1. EMEA – Europe-Middle East - Africa...................................................... 213
9.4.2. NA/SA – North America – South America .............................................. 214
9.4.3. APAC – Asia - Pacific ............................................................................. 214

LTE RF Planning Guide

Version 1.2 iProtect: Internal Page 8

9.4.4. Antenna Sharing Configuration Repository ............................................ 215
9.5. INTER-SYSTEM FREQUENCY COMPATIBILITY ...................................................... 215
9.5.1. Known Potential Frequency Conflicts ..................................................... 216
9.5.1.1. Between LTE Upper 700 MHz (E-UTRA Band 12) and Lower 700 MHz
(E-UTRA Band 14) ............................................................................................. 216
9.5.1.2. Between 850 MHz Cellular (E-UTRA Band 5) and AWS (E-UTRA Band
4) 216
9.5.1.3. Between PCS Bands (E-UTRA Band 2) and AWS (E-UTRA Band 4) 216
9.5.1.4. Between a Legacy system and LTE within certain PCS blocks .......... 217
9.6. SELECTING OPTIMAL ANTENNA SHARING GOALS ............................................... 217
9.7. RE-MINING SPECTRUM .................................................................................... 218
9.7.1. Separate Base Station Transmitters....................................................... 218
9.7.2. Common Base Station Equipment ......................................................... 219
9.8. TDD WITH FDD.............................................................................................. 221
9.9. FINE TUNING ANTENNA CONFIGURATIONS......................................................... 222
9.9.1. Tower Top Amplifiers.............................................................................. 222
9.9.2. Antenna Downtilt .................................................................................... 223
9.10. TECHNICAL COMPATIBILITY TOPICS FOR REFERENCE......................................... 224
9.10.1. Combining Loss...................................................................................... 224
9.10.2. Guard Bands .......................................................................................... 224
9.10.3. Duo-Band / Wide Band Antennas........................................................... 224
9.10.4. Splitters / Combiners / Filters ................................................................. 225
9.10.5. Transmit Sideband Noise ....................................................................... 225
10. OTHER RF RELATED PLANNING ITEMS ...................................................... 227
10.1. PHYSICAL CELL IDENTITY................................................................................. 227
10.2. ROOT SEQUENCE ........................................................................................... 228

if you like this post, just give thx or rep button, thx :)

aygo
2012-02-03, 02:11 AM
hi

file is already posted
http://www.finetopix.com/showthread.php?22900-LTE-RF-Planning-Guide
http://www.finetopix.com/showthread.php?22541-LTE-RF-planning-Guide&highlight=lte+********

and so on

ryuzaki_steven
2012-02-03, 02:54 AM
wow, i don't know about it..sorry..

well, maybe i can share it to the newcomer who can't download the attachment from other section :)

kin12345
2012-02-03, 02:34 PM
this book contains about lte rf planning from ********, very usefull document to learn about lte and planning lte

if you like this post, just give thx or rep button, thx :)

Please read forum no password is allowed.

telecom01
2012-02-03, 04:14 PM
this book contains about lte rf planning from ********, very usefull document to learn about lte and planning lte

if you like this post, just give thx or rep button, thx :)
Password is allowed only for the med, check here (http://www.finetopix.com/showthread.php?21647-new-rules-becoming-a-senior-member-and-putting-password)

ryuzaki_steven
2012-02-04, 11:28 AM
thx for info, maybe i should read all the rule before i get wrong again in the future

but i still don't understand about the password included file, is it just for med? but i found other file are password protected even not med. can anyone explain it further?

best regard

telecom01
2012-02-04, 11:39 AM
thx for info, maybe i should read all the rule before i get wrong again in the future

but i still don't understand about the password included file, is it just for med? but i found other file are password protected even not med. can anyone explain it further?

best regard
Coz those files posted before rules about password proteted files come.
BR!

ryuzaki_steven
2012-02-04, 03:21 PM
ok, i've updated the link, the previous link has been deleted. here the new link without pass enjoy

if you like this post, just give thx or rep button, thx

best regard

girisanz
2012-06-04, 10:15 AM
help to download this file.

Pfedya
2012-06-12, 05:53 PM
Please share this doc on 4share...

svm814
2012-06-23, 05:04 AM
Thanks to all showing the correct and original link, also thanks to the one who make the post otherwise I won't have known about this material