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LTE Planning With SFN

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by

Anass Ezat

on 13 July 2016

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Transcript of LTE Planning With SFN

Objectives
Implementation for LTE Planning By Using C# language under
SFN concept, decrease frequncy reuse at each cell to one and increase Signal to noise ratio
Outlines:
Mobile Generations.
LTE Planning.
SFN Techonogy.
Tool Presentation.
Expecting Results.
Represented By:
Ahmed Ibrahim
Ahmed Mohamed
Aya Adel
Anas Ezat
Hadeer Ahmed


Under Supervision Of:
Mahmoud Elsayed
Mina Yousef
Mohamed Reda
Mostafa Mohamed
Zeinab Ahmed
Mobile Generations
GSM
GPRS
EDGE
W-CDMA
LTE
AMPS
1G
2G
2.5 G
2.75 G
4 G
2nd Generation
(GSM)
Used Bands
Multiple Access Technique
3rd Generation
UMTS
Used Bands
Multiple Access Technique
Network Structure
GSM Bands
Multiple Access Technique
UMTS Bands
Multiple Access Technique
Network Structure
LTE
What is LTE ?

LTE is the 4th generation of mobile broadband technology.

Data rate from
100:300
Mbps.

It is the next level after UMTS (3G) technology.

Work with IP.

LTE Main Performance Targets
spectral efficiency two to four times more than with
HSPA Release 6
.
peak rates exceed
100
Mbps in downlink and
50
Mbps in uplink.
enables round trip time
<10 ms.

LTE
Network
Architecture
MIMO
(Multiple In Multiple Out)
C=B log2(1+SNR)
Throughput
OFDMA
Latency
4G
S-GW
E-Node B
Latency Handover
S-GW
S-GW
E-Node B
E-Node B
4G
Network service area
Location Area
1
1
1
2
2
2
4
4
4
3
3
3
RA1

RA2
RA3
LTE Planning With SFN
`

Dr.Ahmed Eldieb
Planning Process
Planning Phases
Studying Coverage
&
Capacity Dimensioning
LTE
Dimensioning
process
Capacity Dimensioning Methods:

System Interference based
Coverage
Dimensioning Flow Chart
EIRP
Losses
Margins
RX-Sensitivity
System Gains
Start
LTE
Dimensioning
End
Link Budget Calculations
MAPL
(Max Allowed Pathloss)
Propagation Model
Calculate Cell radius & site Count
EIRP=TX power-
feederloss-jumperloss-
connectorloss+antenna gain+
TMA( Gain/insertionloss)
1.Penetation loss.
2.Feeder loss.
3.Jumper loss.
4.Connector loss.
RXsensitivity=Nt+Nf+10log(BW)+ SINR
MIMO Gains,
Diversity&Beam Forming)
MAPL=EIRP-RX_sensitivity-penetration loss-body loss-fading
margin-shadowing margin-interference margin-RX_feeder loss- RX_jumper loss- RX_connector loss+RX_antenna gain+diversity gain+TMA gain
Coverage
Dimensioning Flow Chart
Losses
Margins
RX-Sensitivity
Start

LTE
Dimensioning
End
Uplink SINR
Uplink interfernce margin
Calculate Cell radius & site Count
1.Penetation loss.
2.body loss.
3.Jumper loss.
4. antenna gain.

RXsensitivity=Nt+Nf+10log(BW)+ SINR
max path loss
Average UL\ system load
Qul = Tcell / Rrb (nRB-nPUCCH)
UL Interferance Factor
F = 0.7
System Interference Model Based
UpLink
The bit rate at the cell edge = average bit rate in cell
DownLink
DL Cell Edge Throughput
Downlink average user bit rate (Ravg,DL)
DL Cell edge Noise Ratio (SINR)
UL SINR target
UL Interfernce Margin
eNode B Rx Sensitivity
Maximum Path Loss
UL Site count
= Area to Cover/Coverage Area (A)
DL max signal attenuation
LTE planning
Singal Frequency Network
History of SFN
Targets Of SFN
Increase spectral efficiency
Save power
Low cost

SFN planning
UL SINR target
UL Interfernce Margin
eNode B Rx Sensitivity
Maximum Path Loss
Cell Radius

Block Diagram of OFDMA
Program
Dispaly

Expecting Result
because of increasing SNR it will effect at :
decrease co-channel interfernce margin
increase bit-rate per resource block
increase cell radious
decrease number of site
3G
LTE Advanced Releases
• Release 10, 11: have bit rate from 300Mbps to 1Gbps
• Release 12: have bit rate from 1Gbps to 3Gbps
• Release 13: have bit rate from 1Gbps to 7Gbps
• Release 14: have bit rate from 1Gbps to 12Gbps

Uplink Bit Rate per RB
Uplink Cell Throughput
How SFN works ?
Downlink Cell Throughput Tcell,DL
Downlink Noise Rise at Cell Edge BIDL
Any Question
Thank
You
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