Page 835 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

and 4G), and so forth. There are even discussions of 2.5G when
systems integrate second- and third-generation technologies. Table

11.10 attempts to clarify some of these confusing issues (this is only a
partial listing of the technologies).

TABLE 11.10 Mobile service technologies

Technology Generation

NMT 1G
AMPS 1G

TACS 1G

GSM 2G

iDEN 2G

TDMA 2G
CDMA 2G

PDC 2G

HSCSD 2.5G

GPRS 2.5G

W-CDMA 3G
TD-CDMA 3G

UWC 3G

EDGE 3G

DECT 3G

UMTS 3G
HSPDA 3.5G

WiMax – IEEE 802.16 4G

XOHM (Brand name of WiMax) 4G

Mobile Broadband – IEEE 802.20 4G

LTE (Long Term Evolution) 4G
4G/IMT-Advanced standards using millimeter wave 5G

bands (28, 38, and 60 GHz)