2. INDEX
• TOPICS
• PREFACE
• INTRODUCTION TO GSM
• EVOLUTION OF G
• GSM ARCHITECTURE OVERVIEW
• CELL NETWORK AREAS
• FREQUENCY SPECTRUM
• PROJECTS /SOFTWARES DONE AT TRAINING
• DRIVE TEST
• RF PLANNING(3G PLANNING)
• PLANNING AND OPTIMISATION
• ATOLL SOFTWARE(RESULTS)
• CONCLUSION
3. PREFACE
1. This training is based on the telecommunication. The network planning is
not only to define the initial network roll-out targets, but also to provide
moving targets to the continuous process that takes the whole life time
of the network. Before the2G and 3G network is launched, all the work is
focused on estimating how the network should look like. After the
network launch customer intake and behavior will decide the network
development direction.
2. The most demanding tasks are to gather all the required information for
the planning work and making the network roll-out decisions based on all
these estimations, operator demands and assumptions of future costs.
Cost estimations are usually very sensitive to the changes in basic
assumptions and it is crucial that all assumptions are recorded to the
network roll-out plan.
4. 1. Introduction to GSM (Global
System for Mobile
Communications)
• The Global System for Mobile Communications (GSM) is a set of
recommendations and specifications for a digital cellular
telephone network (known as a Public Land Mobile Network, or
PLMN).
• These recommendations ensure the compatibility of equipment
from different GSM manufacturers, and interconnectivity between
different administrations, including operation across international
boundaries.
• GSM networks are digital and can cater for high system capacities.
7. CELL
• A cell is the basic unit of a cellular system and is defined as the area where
radio coverage is given by one base station. Different cells are identified by
a unique number called Cell Global Identity (CGI). In a complete network
the number of cells is large.
• There are a limited number of frequencies available within the frequency
band specified for cellular systems. Each operator licensed to run a cellular
network, has been provided with a number of frequencies. A cell has one
or several frequencies, depending on traffic load. To cover a country, for
example, the available frequencies must be reused. The same frequency
cannot be used in neighboring cells due to interference
10. PROJECT WORK OR SOFTWARES DONE AT TRAINING
• DRIVE TEST :
• It is a method that is adopted to optimized GSM network. Once a
GSM network is rolled out based on network planning tool
prediction. The nature of network hardly ressembles with the
prediction so that the operator or the service provider tasks is to
bring the network back as nearest as possible towards the prediction.
• Through the systematic process of collecting the air interface data
from the already built network status of existing network get
recorded. The collected data is processed offline to know the
deviation from the prediction as per the interpretation of the pre
processing result configuration changes are performed on the
network. Then further DRIVE TEST is performed to check the
modified status . after a few changes the network is brought very
near to the prediction then the network is set to optimized .
11. WHY DRIVE TEST ?
• DRIVE TEST is performed to identifies the Network Problem, Analysis the
reasons behind all these problems and performed its Rectification.
12. RF PLANNING(3G)
• Project description:
• Introduction
• In the context of mobile and cellular communication systems, RF Planning is the
process of assigning frequencies, transmitter locations and parameters of a
wireless communications system to provide sufficient coverage and capacity for
the services required (e.g. mobile telephony). The RF plan of a cellular
communication system revolves around two principal objectives; Coverage and
Capacity Coverage relates to the geographical footprint within the system that has
sufficient RF signal strength to provide for a call/data session. Capacity relates to
the capability of the system to sustain a given number of subscribers. In 3GPP GSM
systems, both capacity and coverage are interrelated. To improve quality some
coverage, capacity has to be sacrificed, while to improve capacity, coverage will
have to be sacrificed.
15. Data Collection
• Data of network plan
– Network basic information collection
• The base of network plan and optimization
– The engineering survey data of new sites
– Confirm the network plan information.
– The Engineering data of the current network
– Understand the current network .
– The configuration NMS data.
• Understand the current network configuration.
Collection of various performance reports of the
currently deployed network.
– Subscribers’ complain
– The supplement information showing the
network quality.
Let’s begin!
22. CONCLUSION
• Working knowledge of GSM, WCDMA network technologies and
architecture Working knowledge Cell planning and Optimization.
• An introduction to LTE system architecture and air Interface Knowledge of
Protocols and radio network functionality of LTE Systems
• Learn how to plan an efficient LTE radio network Gain a clear
understanding of the OFDMA principle and application within LTE
• Understand the role of MIMO and Adaptive antennas to improve
performance in LTE systems
• Coverage and Capacity planning in LTE systems
• Detailed planning and analysis using industry leading tool Forks
• ATOLL Optimization and Site Selection through Automatic cell Planning
tool.
• Designing and optimizing an example network An overview of Initial
tuning and Drive Test data analysis for optimization
