National Institute Of Science & Technology

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATION Under the guidance of Mr. N. Srinivasu Presented by Sambit Tripathy Roll # EC200118018 [1]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS PDC

Time Division duplexing

AIRB(wideband CDMA) Wideband CDMA

GPRS GSM

UTRA(wideband CDMA)

MultiCarrier multicode Frequency Division Duplexing

EDGE 136HS

AMPS

IS-54

UWC-136

ANSI136 136+

cdmaOne

cdma2000

IS-95B

Sambit Tripathy

EVOLUTION OF GSM

EC200118018

[2]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

GSM SPECIFICATIONS 1,850 to 1,990 MHz (mobile station to base station).

FREQUENCY BAND

80 MHz

DUPLEX DISTANCE

CHANNEL SEPARATION MODULATION

200 kHz.

GAUSSIAN MINIMUM SHIFT KEYING (GMSK)

TRANSMISSION RATE ACCESS METHOD

SPEECH CODER

270 kbps TIME DIVISION MULTIPLE ACCESS (TDMA) LINEAR PREDICTIVE CODING (LPC)

Sambit Tripathy

EC200118018

[3]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

AUC

Switching System

PSTN

PLMNs

GMSC

HLR

EIR

OSS

MXE PSPDN

GIWU

Base station system

BTS

MSC/VLR

BSC

BTS

MOBILE STATION

SYSTEM ARCHITECTURE OF GSM

Sambit Tripathy

MSN

BTS

Information Transmission Call Connection and Information Transmission

EC200118018

[4]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

NSS

HLR

AUC

SS7

BSS

GMSC

Control Flow User Data Flow

MSC/VLR

PSTN

BSS

EXTERNAL ENVIRONMENT OF NSS

Sambit Tripathy

EC200118018

[5]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

OSS

BSS

NSS

PSTN

Control Flow User Data Flow

BSS

INTERNAL ENVIRONMENT OF NSS

Sambit Tripathy

EC200118018

[6]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS Network operation and Management

Subscription Management and Charging

NSS

NSS

ME

Mobile Equipment and Charging

MS

SIM

OSS ORGANISATION

Sambit Tripathy

EC200118018

[7]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS FUNCTIONAL LAYERS OF GSM

User

Operator OAM

CM

MM

RR TRANSMISSION

Sambit Tripathy

EC200118018

[8]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS GSM NETWORK AREAS PLMNs Network Area (1 Operator’s Network) MSC/VLR Area (Area Covered By 1 MSC) LOCATION AREA(1 MSC Consist of LAs)

CELL (Area Covered by 1 BTS)

Sambit Tripathy

EC200118018

[9]

LOCATION AREAS LA3

LA4

Sambit Tripathy

VL R

LA2

LA1

M SC

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

LA6

EC200118018

[10]

VL R

M SC

VL R

M SC

KSC/VLR SERVICE AREAS

IV

VL R

VL R

M SC

I

M SC

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

II

Sambit Tripathy

III

EC200118018

[11]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS RADIO TRANSMISSION IN GSM

Broadcast Control Channel (BCCH) Frequency Correction Channel (FCCH) and Synchronization Channel (SCH) Random Access Channel (RACH)

Paging Channel (PCH)

Access Grant Channel (AGCH)

Sambit Tripathy

EC200118018

[12]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS SPEECH AND CHANNEL CODING OF GSM 260 bits per 20ms Full speech coding rate is 13kbps Forward error correction (conv. Encoder)

8 57 bits blocks are interleaved

456 bits per 20 ms (22.8 kbps)

The digital TDMA nature of the signal allows several

processes intended to improve transmission quality, increase the mobile's battery life, and improve spectrum efficiency Another feature used by GSM is power control, which attempts to minimize the radio transmission power of the mobiles and the BTS, and thus minimize the amount of co-channel interference generated. 

Sambit Tripathy

EC200118018

[13]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

GSM

DTMF SMS FAX MAIL

VOICE MAIL

CELL BROADCAST FASCIMILE G III

GSM SUBSCRIBER SERVICES

Sambit Tripathy

EC200118018

[14]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS 3 GSM BIGGER AND BETTER SCREEN TECHNOLOGY MULTIMEDIA CAMERA TECHNOLOGY VIDEO PALM 3GSM SPECIFIC APPLICATIONS 1. Audio 2. Still Images 3. Moving Images 4. Downloading Software

Sambit Tripathy

EC200118018

[15]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

CONCLUSION World's leading and fastest growing mobile standard, spanning over 190 countries. Smashed 1 Billion subscribers mark across the globe. The Third Generation of mobile communications bring with it mobile multimedia with high data bandwidths and sophisticated mobile terminals and new services and applications.

Sambit Tripathy

EC200118018

[16]

National Institute of Science & Technology

GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS

THANK YOU

Sambit Tripathy

EC200118018

[17]