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LTE Dimensioning Planning Tool

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by

mohamed mokhtar

on 4 June 2016

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Transcript of LTE Dimensioning Planning Tool

LTE
Dimensioning Planning Tool

LTE
PLanning

Collect information.
Standard of living.
Expected Traffic.
Dimension of Site.
Objective
Our Project Is Design And Implementation For Complete
LTE
Planning
Tool BY Using
C#
Language For Detection For The Number Of Cells Between The coverage and Capacity.
Coverage
Assumptions
Represented by :
Mohamed Mohamed Mokhtar
Mahmoud Mamdouh Mamdouh
Omar Hanafy Hesham
Mahmoud Yasser
Ahmed Shawky Salah Eldin
Mahmoud Ahmed Ali
Under supervision of :
Dr.Talaat ElGarf
Outlines
LTE Technology.
LTE Planning.
Tool Presentation.

Mobile Generations
1G
AMPS
2G
GSM
2.5 G
GPRS
2.75 G
EDGE
3G
UMTS
3.5 G
HSDPA
3.75 G
HSUPA
4G
LTE
What Is
LTE
?
LTE is the next generation of mobile broadband technology.
work with
IP
.
It is the next level after
UMTS (3G)
technology.
Data rate of
100
Mbps.
LTE Main Performance Targets
Spectral efficiency two to four times more than with HSPA Release 6.
Peak rate exceed
100 Mbps
in downlink and
50 Mbps
in uplink.
Enable round trip time
< 10ms
Throughput
C= B log2(1+SNR)
OFDMA
MIMO
Adaptive Modulation
QPSK
16 QAM
64 QAM
OFDMA
Transmitter
Reciever
serial
Data
input
series
to
parallel
Sub
carrier
IFFT
F -- T
FFT
T -- F
sub
carrier
Parallel
to
series
serial
Data
output
MIMO
(Multiple In Multiple Out)
Latency
4G
E-Node B
S-GW
Latency Handover
S-GW
S-GW
E-Node B
E-Node B
4G
Spectral Efficiency
Network service area
Location area
Framing
LTE Network Architecture
Limitations
Content
1.Coverage Dimensioning in UL & DL
2.Capacity Dimensioning Methods:
Method (1) :
Modulation Based
System Interference based
Method (2) :
Cell Rings based
Method (3) :
Coverage
Dimensioning Flow Chart

Start
LTE
Dimensioning
Link Budget Calculations
MAPL
(Max Allowed Pathloss)
Propagation Model
Calculate Cell radius & site Count
END
EIRP
EIRP=TX power-
feederloss-jumperloss-
connectorloss+antenna gain+
TMA( Gain/insertionloss)
RX-Sensitivity
RXsensitivity=Nt+Nf+10log(BW)+ SINR
Losses Margins
1.Penetation loss.
2.Feeder loss.
3.Jumper loss.
4.Connector loss.
System Gains
MIMO Gains,Diversity
&
Beam Forming
Capacity Dimensioning
Method 1
Modulation Based
Cell Throughput
T cell = MAX. Cell Throughput (T cell-max) x Q
Factors affecting Maximum Cell Throughput
So Maximum Cell
Throughput :
T cell_max = NT_RB x No. of bits per Symbol x Code Rate x No. of traffic RE per RB per 1 msec x (1- CCH%)
T cell = MAX. Cell Throughput (T cell-max) x Q
Method 2
System Interference Model Based
DownLink
UpLink
The bit rate at the cell edge = average bit rate in cell
Interference Margin (IM)
Signal to Interference to Noise Ratio (SINR)
Average bit rate per resource block (RRB)
Cell Throughput (T cell )
The bit rate per resource block is scaled by total no. of
resource blocks to obtain average bit rate in downlink .
R avg,dl: Average Bitrate in Downlink.
R,rb: Average Bitrate per resource Block.
Method 3
Cell Rings Based Capacity Dimensioning
The main idea is done by dividing the cell into a group of rings .
The required inputs :
Path Loss for each ring
average cell througput
SINR for each ring
Antenna Tilt
Process Flow
Development of Dimensioning Tool
Tool
Presentation
Thanks
Any Questions ?
UPLink Noise Rise
- Mimo is considered only for downlink
- The Method in 4G Planing Based on VOIP
- Quality of Service
-All User Equipment is assumed having two receiving antennas
-All Resource Blocks transmit at the same power
-The coverage for control channels and control signals equals that user data at the same power
Uplink Budget
Downlink Link budget is calculated to :-


1- to determine the limiting link
2- to determine the bitrate that can be supported in the downlink .
Downlink Calculations Parameter
1- Pathloss from Uplink
2- Bitrate requirements
3- Power Per Resource Block
4- Downlink Noise Rise
5- Downlink Link Budget
6- Receiver Sensitivity
7- Bitrate at the cell edge
8- concluding the link Budget
Power Per Resource Block
Downlink noise rise at cell edge
Downlink Budget
Bit Rate at cell edge
Full transcript