LTE Model Tuning Verification

HUAWEI TECHNOLOGIES CO., LTD.

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Model Tuning VerificationTD-LTE Radio Network PlanningAuthor/ Email: Ray Khastur

Version: V1.1(20130315)

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 2

Author / ID Ray Khastur

Co-author / ID

Approver / ID

Description

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Link Budget Calculation


SITRA TD-LTE 20 MHz


AtollGenex U-Net

Clutter Class Configuration


Cell Radius Estimation RRU 3252Duplex ModeTDD DL/UL ConfigurationCyclic PrefixTDD Special Subframe ConfigurationICIC SwitchDL Power Control Parameter Pb

RegionTDD

#2 5ms 3:1Normal CP#7 10:2:2

Close1

BW : 20 MHz (100 RB)4T4R (@20 Watt/Port), Total Power 80W (49dBm)

RSRE Power = Psingle port-10.log(12xNrb)+10.log(1+Pb)

RSRE Power = 43dBm – 10.Log(12x100)+3

Maximum RSRE Power = 15.2 dBm

U-Net Prediction


Cell Radius Estimation of Field TestDuplex ModeTDD DL/UL ConfigurationCyclic PrefixTDD Special Subframe ConfigurationICIC SwitchDL Power Control Parameter Pb

RegionTDD

#2 5ms 3:1Normal CP#7 10:2:2

Close1

BW : 20 MHz (100 RB)4T4R (@10 Watt/Port), Total Power 40W (46dBm)

RSRE Power = Psingle port-10.log(12xNrb)+10.log(1+Pb)

RSRE Power = 40dBm – 10.Log(12x100)+3

RSRE Power = 12.2 dBm

From the existing power transmit on eNode B Citra Graha The Downlink Coverage for RSRP -130 dBm can reach up to 2.84 Km away .


DL RSRP Citra Graha-M-L-RT

Citra Graha has Urban morphology with cell edge probability 75 % for Genex U-NET V3R8 simulation

Ant.Height : 52 mAzimuth : 140 degMech.Tilt : 2 degRS Power : 12.2 dBm

2.6 Km


DL RS SINR


Ant.Height : 52 mAzimuth : 140 degMech.Tilt : 2 degRS Power : 12.2 dBm2.6 Km


DL MAC Peak Throughput


Ant.Height : 52 mAzimuth : 140 degMech.Tilt : 2 degRS Power : 12.2 dBm2.6 Km

Maximum DL Throughput

Maximum DL Throughput for Cat 3 UE-TDD

The Configuration using Frame Configuration 3:1Special Subframe 10:2:2PDDCH Symbol (1)MIMO : OL_Adaptive

1 76 151 226 301 376 451 526 601 676 751 826 901 976 1051 1126 1201 1276 1351 14260

10000

20000

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60000

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79671.909



DL T

hrou

ghpu

t (Kb

ps)

Microsoft Office Excel Worksheet

Drive Test Result


Effective Cell RadiusFrom RnD Tools for “Data Channel Cell Radius Dimensioning” the UE maximum can transmit the power only for distance below of 1 km.

We need to make sure first about the downlink coverage, so the drive test route will check until 1.43 km away.


Drive Test Route Based on RSRP

1.5 Km

1.6 Km

2.4 Km


RSRP Threshold

-140

-130

-120

-110

-100

-90

-80

-70

-60

-133.31

-69.38

RSRPMeas CRS RSRP Antenna0_All Logs RSRPMeas CRS RSRP Antenna1_All Logs

From Measurement Report of RSRP, we can see the range of highest and the lowest threshold.The UE can’t receive lower than -133.31 dBm from field test March 15, 2013.


Drive Test Route Based on SINR

1.5 Km

1.6 Km

2.4 Km


SINR Threshold

-20

-10

0

10

20

30

40

-13.4

30

SINR Antenna0_All Logs SINR Antenna1_All Logs

From Measurement Report of SINR, we can see the range of highest and the lowest threshold.Max SINR : 30 dBMin SINR : -13.4

LTE Model Tuning Verification

Engineering

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