presentation on gsm(2g & gprs)
DESCRIPTION
presentation on GSM (2G & GPRS )TRANSCRIPT
GLOBAL SYSTEM FOR MOBILE BRIJESH KAUSHIK COMMUNICATIONS
INTRODUCTION TO GSM ARCHITECTUREa)BSS-MS,BTS,BSCb)NSS-MSC,GMSCOMSGPRS (2.5G) ORGANIZATIONS RELATED WITH GSM,3G INDIA’S FREQUENCY ALLOCAION PLAN
GMSK MODULATION
1710-1785 MHz
1805-1880 MHz
ARCHITECTURE OF GSM (2G) 9.6kbps
ARCHITECTURE OF GSM (2G)
ARCHITECTURE OF GSM (2G)
ARCHITECTURE OF GSM (2G)
ARCHITECTURE OF GSM (2G)
ARCHITECTURE OF GSM (2G)
ARCHITECTURE OF GSM (2G)
ME (Mobile Equipment)IMEI : 15 digits (*#06#)
SIM (Subscriber Identity Module) card
Serial no. – 19 digitsMSISDN : 12 digits(CC+NDC+SN) (1-3+ 12-14) 91xxxxxx37MSRNIMSI : 15 digitsSECRET KEY Ki - 128 bits SAME AS PRESENT IN AUTHENTICATION CENTRETMSI
BTS(Base Transceiver System)
COVERAGE AREA : 100M- 35KM
BSC(Base Station Controller)CALL HANDOVER
GMSC (Gateway Mobile Switching Centre)
BLACK LISTGREY LISTWHITE LIST
OMCROPERATION & MAINTENANCE CONTROL ROOM
ARCHITECTURE OF GPRS (2.5G) 35kbps-171kbps
i) 0-87.5 MHz is used for marine and aeronautical navigation, short and medium wave radio and cordless phones.ii) 87.5-108 MHz is used for FM radio broadcastsiii) 109- 173 MHz Used for Satellite communication, aeronautical navigation and outdoor broadcast vansiv) 230—450 MHz Used for Satellite communication and outdoor broadcast vans.v) 585-698 MHz Used for TV broadcastvi) 806-960 Used by GSM and CDMA mobile servicesvii) 960-1710 Aeronautical and space communicationviii) 1710- 1930 Used for GSM mobile servicesix) 1930-2010 – Used by defence forcesx) 2025-2110 – Satellite and space communicationsxi) 2170-2300 – Satellite and space communicationsxii) 2400- 2483.5 Used for Wi-Fi and Bluetooth short range servicesxiii) 2483.5-3300 Space communicationsivx) 3600-10000 Space research, radio navigationxv) 10000 – used for satellite downlink for broadcast and DTH services