cellular telephone networks 2008

CELLULAR TELEPHONE NETWORK

by Francisco Villegas

Objectives

Provide the basic/general understanding of a Modern Cellular Telephone Network, its network elements and their functionalities.

Review basic concepts of Cellular Systems such as Mobility and Resources Utilization.

Building the Architecture

Cellular Concepts Revision

Recommended Bibliography

BUILDING THE ARQUITECTURE

Building the architecture

We will follow the logical steps in order to develop a telephone network architecture.

From a simple two persons communication to an Internationally Standardized Network.

Building the architecture

Waste of Resources

MiramarLuanda Sul

Building the architectureMiramarLuanda Sul

Optimization of lines

Voice

Signaling

Building the architectureMiramarLuanda Sul

Focusing on borders

Voice

Signaling

Building the architecture

Miramar Luanda Sul

Closer to the real world

Miramar

Benfica Cruzeiro

Luanda Sul

Building the architecture

Miramar

Luanda Sul

Luanda Sul

Benfica

Miramar

Cruzeiro

PSTN

Connected to PSTN

Unitel

and Unitel

Building the architecture

Miramar

Luanda Sul

Luanda Sul

Benfica

Miramar

Cruzeiro

PSTN

Lets go Cellular Wireless

Unitel

Building the architecture

Miramar

Luanda Sul

Luanda Sul

Benfica

Miramar

Cruzeiro

PSTN

Move Commercial

Unitel

Building the architecture

Luanda Sul

PSTN

Basic Terms

Unitel

Miramar

MSCBSC

Benfica

Luanda Sul

BTS

BTS

MS

MS Mobile StationBTS Base Transceiver SystemBSC Base Station ControllerMSC Mobile Switching CenterPSTN Public Switched Telephone Network

Building the architecture

Signaling Improvement

MSCBSC

BTS

BTS

MS

STP Signal Transfer PointSS7 Signaling System #7

PSTN

Unitel

Miramar

STP (SS7)

Building the architecture

Mobile Localization

MSCBSC

BTS

BTS

MS

HLR Home Location RegisterVLR Visitor Location Register

PSTN

Unitel

Miramar

STP (SS7)

HLR

VLR

Building the architecture

SMS, Voicemail

MSCBSC

BTS

BTS

MS

SMSC Short Message Service CenterVMS Voicemail Server

PSTN

Unitel

Miramar

STP (SS7)

HLR

VLR

SMSC

VMS

Building the architecture

Prepaid

MSCBSC

BTS

BTS

MS

Miramar

STP (SS7)

HLR

VLR

SMSC

VMS

PSTN

Unitel

PSTN

Prepaid

Building the architecture

Billing

MSCBSC

BTS

BTS

MS

Miramar

STP (SS7)

HLR

VLR

SMSC

VMS

PSTN

Prepaid

Building the architecture

Provisioning

MSCBSC

BTS

BTS

MS

Miramar

STP (SS7)

HLR

VLR

SMSC

VMS

PSTN

Prepaid

Building the architecture

Blocks Definition

MSCBSC

BTS

BTS

MS

Miramar

STP (SS7)

HLR

VLR

SMSC

VMS

PSTN

Prepaid

ACCESS

CORE

IN

VAS

CELLULAR CONCEPTS REVISION

Mobility, Handoff

Feature available due to VLR and HLR Registers. International Mobility is Rooming.

Availability of subscriber to move between BTS into the Network.

Sectorization, Carriers

The division of BTS coverage for Resources Management and maximization of users.

F1

Frequency Utilization, applying the same concept as Commercial Radio Utilization. AM/FM/TV.

F2

F3

RECOMMENDED BIBLIOGRAPHY

Books, links

1. Esmailzadeh, Riaz and Nakagawa, Masao. TDD CDMA for Wireless Communication. Massachusetts: Norwood, 2003. 2.Cisco Press, Cisco SS7 Fundamental, Chapter two SS7 Signaling Architecture3. Adionel Guimaraes, Dayani. Introduccao aos Sistemas Celular TDMA e CDMA

Questions??

Thankspresented by

Francisco Villegas