2.5G RF PLANNING & N/W OPTIMIZATION COURSE CODE: CS-2G-RFPNO

2.5G RF PLANNING & N/W OPTIMIZATION COURSE CODE: CS-2G-RFPNO

COURSE CODE: CS-2G-RFPNO
2.5G RF PLANNING & N/W OPTIMIZATION
I – INTRODUCTION TO RF
NETWORKS
VI – RF PROPAGATION
MODELS
XI – TEMS POCKET
HARDWARE
Spectrum Allocation
Coverage planning
Capacity planning
Site Cell configurations
Macro & Micro sites
Cell splitting concept
Umbrella & Concentric cell
Propagation models
- Okumura model
- Hata model
- Okumura-Hata model
- COST231 model
Fading & its types
- Ricean fading
- Longley Rice
Diffraction, Scattering
Reflection & Refraction
Introduction to TEMS Pocket
Identifying BCCH, CellID, RxLev, LAC
Checking BA List
Checking Hopping list, MAIO & HSN
GPRS & EDGE Parameters
Testing BCCH, TS, TA, MS TXPWR, etc.
Checking C/I
II – ADVANCED CHANNELS
& APPLICATION
Physical & Logical Channels
Broadcast Channels
- BCCH, SCH FCH
Common Control Channels
- PCH, RACH, AGCH
Dedicated Channels
SDCCH, SACCH, FACCH
Traffic Channels
- TCH/F, TCH/H
BCCH/8, SDCCH/8,
SACCH/8, FACCH/8
AMR (Adaptive Multi-Rate)
Comfort noise & DTX
III – PRACTICAL ANTENNA
DESIGN
Omni Directional Antennas
Antenna deployments in Macro & Micro
and IBS environment
Directional Antennas
FET, VET& RET
Antenna properties
- F/B ratio
- Beamwidth & Gain
- Directivity
Tilting techniques
- Mechanical
- Electrical
IV – DIVERSITY SCHEMES
Older design Antennas
Modern design Antennas
Diversity techniques
- RX Diversity
- Space diversity
- Polarization diversity
Duplexors
- Use of duplexors
Diplexers
Triplexers
Quadplexers
V – RADIO FREQUNECY
PLANNING
RF Planning
Coverage of a cell
Frequency re-use principle
Some formulas
Planning 3x3, 4x3, 5x3, 6x3, 7x3
- Single BCCH planning
- Concentric BCCH planning
Planning Traffic Channels
Allocating BSIC to cells
Verification of channel allocation
XII – TEMS INVESTIGATION
DATA COLLECTION
VII – RF KPIS
Call Setup Time
CSSR (Call Setup Success Rate)
RASR (Random Access Success Rate)
DCR (Dropped Call Rate)
HOSR (Handover Success Rate)
SDCCH Congestion
SDCCH Drop Rate
TASR (TCH Assignment Success Rate)
TCR (TCH Congestion Rate)
TCH Drop Rate
IASR (Immediate Assignment Success
Rate)
Uplink-Downlink Balance
Paging Success Rate
Network Interference
VIII – RF NETWORK DRIVE
TESTING
Why need DT?
Types of Drive Test
- Pre Drive Testing
- Post Drive testing
- Cluster Drive Testing
- Routine Drive Testing
- Performance benchmarks Drive Testing
- Troubleshooting DTs
- GPRS/EDGE testing
Drive Testing guidelines
Drive Test setup
IX – FREQUENCY HOPPING
Why implement Frequency Hopping
- Baseband
- Synthesizer based
- Cyclic
MA List
HSN - Hopping Sequence Number
MAIO - Mobile Allocation Index Offset
Examples of Frequency Hopping
Advantages of freq. hopping
Testing hopping channels in TEMS
Troubleshooting
X – RF LINK BUDGETING
Subscriber Determination
Site requirements
Erlang A, B & C tables
Grade of Service (GOS)
QoS (Quality of Service)
Blocking Probability
Main Overview Interface
- GSM Line Chart
- GSM Current Channel Parameters
- Checking Neighbours
- GSM Radio parameters
- Events
Signalling
- Layer 2 & Layer 3 messages
- Mode reports
- Events
Data Function
Map Function
Scanner Function
Control & Configuration Function
- Equipment configuration
XIII – TEMS DATA
COLLECTION MENUS
File Menu
Logfiles Menu
- Opening Logfiles
- Recording logfiles
- Log file properties
- Playing logfiles
- Exporting log files
- Report Generation
Scanning Menu
- Need of scanning
- ARFCN Selection
- Scanning Channels
Command Sequence
- Setting values
- Benchmarking setup
Presentation Menu
XIV – RADIO PARAMETERS
Rx_Lev (Receive Level)
Rx_Qual (Receive Quality)
SQI (SQI Numeric & MOS)
C/I (Carrier-to-Interference)
C/A (Carrier-to-Adjacent Interference)
BER (Bit-Error Rate)
FER (Frame Erasure Rate)
TA (Timing Advance)
XV – TEMS ROUTE
ANALYSIS
Composite design
- Documenting
- Presentation
- Recommendations
- Conclusion
XVI – TEMS PREREQUISITES
Pre-requisites
Installing necessary drivers
Connecting handsets
Connecting the GPS
Loading Network Data
Loading vectors/map
Call Testing
Studying Network parameters
Locking /Preventing ARFCNs
Testing Handovers
XVII – MAPINFO
PROFESSIONAL
Introduction to MAPInfo
Importing data
Generating tabular data
Modifying table structure
Layers & Layer Control
Styles & Labelling
Thematic mapping
Exporting data
XVIII – ALCATEL PLANNING
TOOL
Alcatel Planning Tool
- Creating Base Stations
- Loading BTS file
- Locating GSM/E-GSM & DCS freq.
- Identifying co-BSIC
- Finding co-BCCH issues
- Verifying C/I and C/A problems
- Checking BSC & LAC
XIX – MAPINFO GTOOL
Importing Site data
Importing Cell Data
Importing Antenna data
Importing Neighbour data
Find Site function
Finding BCCH & BSIC
Analyzing Neighbours
XX – MAPINFO EXTRA
TOOLS
Bearing Tool
Calculating site-to-site azimuths
Verifying sector orientations
Path calculations
Calculating Inter-site distances
Optimizing co-channel & adjacent freq.
TEMS Route Analysis Interface
- Loading Cellular data
- Loading Routes
- Loading Maps
Setting reqd. parameters
Analyzing recorded data
Report generation
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