Cell Global Identity

Cell Global Identity (CGI) is a standard identifier for mobile phones cells, providing means to geographically locate connected mobile phones. If a cell phone is connected to a GSM network then the position of that particular cell phone can be determined using CGI of the cell which is covering that cell phone. There is a series of related technologies that were developed based on CGI that enhances the location precision: Cell Global Identity with Timing Advance (CGI+TA), Enhanced CGI (E-CGI), Cell ID for WCDMA, Uplink Time Difference Of Arrival (U-TDOA) and Any Time Interrogation (ATI), and the high accuracy terminal based method Assisted Global Positioning System (A-GPS).^[1]

References

↑ "Location Based Services System overview". ERICSSON. 2009. Archived from the original on January 6, 2010. Retrieved 2009-05-25.

Cellular network standards

List of mobile phone generations

0G (radio telephones)

AMPS family	AMPS (TIA/EIA/IS-3, ANSI/TIA/EIA-553) N-AMPS (TIA/EIA/IS-91) TACS ETACS

Other	NMT C-450 Hicap Mobitex DataTAC

GSM/3GPP family	GSM CSD HSCSD

3GPP2 family	cdmaOne (TIA/EIA/IS-95 and ANSI-J-STD 008)

AMPS family	D-AMPS (IS-54 and IS-136)

Other	CDPD iDEN PDC PHS

2G transitional
(2.5G, 2.75G)

GSM/3GPP family	GPRS EDGE/EGPRS (UWC-136)

3GPP2 family	CDMA2000 1X (TIA/EIA/IS-2000) CDMA2000 1X Advanced

Other	WiDEN

3G (IMT-2000)

3GPP family	UMTS UTRA-FDD / W-CDMA UTRA-TDD LCR / TD-SCDMA UTRA-TDD HCR / TD-CDMA

3GPP2 family	CDMA2000 1xEV-DO Release 0 (TIA/IS-856)

3G transitional
(3.5G, 3.75G, 3.9G)

3GPP family	HSPA HSDPA HSUPA HSPA+ LTE (E-UTRA)

3GPP2 family	CDMA2000 1xEV-DO Revision A (TIA/EIA/IS-856-A) EV-DO Revision B (TIA/EIA/IS-856-B) EV-DO Revision C

IEEE family	Mobile WiMAX IEEE 802.16e Flash-OFDM iBurst IEEE 802.20

4G
(IMT Advanced)

3GPP family	LTE Advanced (E-UTRA) LTE Advanced Pro (4.5G Pro) LTE Advanced (pre-5G) (4.9G)

IEEE family	WiMAX (IEEE 802.16m)

Proposed

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