(3G) Radio Network Planning for WCDMA

Radio Network Planning for WCDMA

Introduction

With the emergence of 3G mobile communication technology, the construction of the

UMTS network will bring a profound evolution, which makes higher requirements for

network planning. At present, the public is greatly interested in this new technology.

Introduction & Complete TUTORIAL 3G Rf-Optimization AND Log-File Analysis

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Rf-Optimization AND Log-File Analysis

INTRODUCTION

Every alive Network needs to be under continues control to maintain/improve the

performance. Optimization is basically the only way to keep track of the network by

Complete Tutorial 3G Rf-Optimization & Log-File Analysis

Rf-Optimization & Log-File Analysis

Before Starting

This document was prepared with TEMS screen shots from live examples of previous
experiences to guide RF Engineers on how to define/analyze problems or cases and optimize

How To Create Command Sequence & Importing Cell File in TEMS

How To Create Command Sequence & Importing Cell File

Learn:-

How To Load Cell & Map File For Drive Test

Make HQ Raster Image and Drive Test Procedure

Make HQ Raster Image

>>CLICK HERE<< To Download Universal Maps Downloader With KEYGEN
Click the Above link to Download the software and start making your own High Quality RASTER image, which could be easily loaded in mapinfo.

Tems Parameters & 3G Rf Optimization Reporting (TEMS & MAPINFO )

("CLICK HERE FOR VIDEO TUTORIAL")

Tems Parameters

WCDMA ( 3G ) Channels "Detailed" Chapter Two/Three

WCDMA ( 3G ) Channels

Channel Mapping

·       The data can be sent through logical layer via different channels in the transport layer.
·       And also one transport channel can be sent via different physical channels.
·       These selection of channels in the transport and physical layer depends on the data itself and radio resource management and its parameters.

Wcdma Channels ( Detailed ) CHAPTER ONE/THREE

WCDMA Channels

Logical Channels are not actually channels but rather they can be defined as different tasks performed by the network and the UE at different times.They describe the type of information to be transferred.
Logical channels are categorized into control channels and traffic channels.Control channels carry the control plane information.Traffic Channels carry the user plane information.
Transport channels describes how the logical channels will be transferred, or it can be defined as how and with what characteristics data is transferred over the interface.
It comes into two groups:
·       Dedicated Channels
·       Common Channels
Radio Frame Structure

Introduction To 3G , UMTS, And Its Techniques

Introduction To 3G , UMTS, And Its Techniques

The Universal Mobile Telecommunications System (UMTS)

Telecom Interview Questions & Answers "IMPORTANT"

Telecom Interview Questions & Answers

What is ciphering

Ciphering modifies the contents of the eight interleaved blocks through the use of encryption techniques to the particular mobile station and base transceiver station.

Two types of ciphering algorithms, called A3 and A5, are used in GSM to prevent unauthorized network access and privacy for the radio transmission respectively.

Antenna Principals For Mobile in Telecommunication

Antenna Systems and Its Principals

In the last few years a large technological jump has taken place in the field of mobile communications due to the introduction of new mobile communication networks (GSM/PCN). The number of subscribers worldwide has risen to over 150 Million. Figure. shows an overview of the mobile communications services and the relevant frequency ranges within Germany alone.

Quick Overview " Microwave "

Quick Overview " Microwave "

TRANSMISSION SYSTEMS

Introduction To Transmission Systems
•        Transmission systems form the backbone of any networks.
•        Normally transmission systems include SDH, PDH, ATM, Microwaves, leased lines.
•        In GSM normally the core network is located in the same premises and are mostly interconnected by fixed wireline. In huge network consisting of many MSC located at different places the interconnection may be through any of the transmission systems mentioned above.
•        The Access network consists of BSC’s with many BTS’s connected to them in various transmission topologies. Normal practice is to connect various BSC’c to the MSC via fiber and different BTS’s connected to BSC via microwave in Daisy chain, star or any other topology. However there can be many different ways of implementation.

E1

Fading, Diversity & Interference in Telecommunication.

Fading, Diversity & Interference

3G RF Planning Procedure & Radio Wave propagation

RF PLANNING PROCEDURE

Propagation tool setup
•        Set up the planning tool hardware. This includes the  server and or clients which may be UNIX based.
•        Setup the plotter and printer to be used.
Terrain, Clutter, Vector data acquisition and setup                                                                                  Procure the terrain, clutter and vector data in the required resolution. Setup these data on the planning tool. Test to see if they are displayed properly and printed correctly on the plotter.
Setup site tracking database
This is done using Project management or site management databases.This is the central database which is used by all relevant department, viz. RF, Site acquisition, Power, Civil engineering etc, and avoids data mismatch.

Frequency Hopping & RF-Optimization Planning in Telecommunication.

Frequency Hopping

                                                         

           

FREQUENCY HOPPING

RF ( Radio Frequency ) Optimization & Planning "Q n A"

What is Mobile Station Roaming Number (MSRN)?

The MSRN is used to identify a subscriber when routing the call from the GMSC to the visited MSC for mobile terminating calls.. It is allocated by the MSC/VLR currently serving the subscriber on a call basis (temporary assignment) 

2G Layers,Power & Handover in Telecom

2G Layers,Power & Handover in Telecom

COMMUNICATION PROCESS

•        Each layer has its own specified functions and provides specific services for the layers above
•        It is important to define the interfaces between different layers and the functions within each layer.
•        The way a function is realized within a layer is not predicted.
•        Logically, the communication between functions always takes place on the same level according to the protocols for that level.

2G Channels In Telecom.

MULTIPLE TECHNIQUES
In order for several links to be in progress simultaneously in the same geographical area without mutual interference , multiple access techniques are deploy
The commonly used multiple access techniques
–       Frequency Division Multiple Access  (FDMA )
–       Time Division Multiple Access (TDMA )
--Code Division Multiple Access (CDMA )

Telecom Interview Question & Answer.

(A)What is ciphering
Ciphering modifies the contents of the eight interleaved blocks through the use of encryption techniques to the particular mobile station and base transceiver station.
Two types of ciphering algorithms, called A3 and A5, are used in GSM to prevent unauthorized network access and privacy for the radio transmission respectively.
How many carrier frequencies are there in GSM-900 and DCS-1800? How much is the separation between the carrier frequencies?
124 carriers.
There are 8 channels in each carrier.
Channel separation is 200 KHz.
What is the Downlink and uplink spectrum is allocated to DCS-1800?
1800 MHz. Up link Frequency 1725-1780 MHZ.
Down link Frequency 1820-1870 MHz

Basic Wireless GSM Fundamentals

Basic Wireless GSM Fundamentals

Understanding GSM.

INTRODUCTION:-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).