3g简述（3G Brief）.docVIP

3g简述（3G Brief） 3G is the third generation mobile communication network, the GSM equipment is used in frequency division multiple access, code division and CDMA using spread spectrum technology, advanced power and voice activated can provide at least 3 times larger than the GSM network capacity, the industry will be CDMA technology as the mainstream technology of 3G, ITU determined three wireless interface standard, respectively. CDMA2000, WCDMA, TD-SCDMA, that is to say the domestic CDMA can smooth the transition to the 3G network, 3G is able to provide the main features of mobile broadband multimedia services, the support rate of 144kbit/s high-speed mobile environment, support the 384kbit /s rate and slow walking mobile environment, the data transmission rate of the indoor environment to support 2Mbit/s. 3G engineers are engineers working in the 3G communications technology industry U1:.. C2: UMTS cellular mobile communication network structure CDMA2000-1X cellular mobile communication network component function UMTS cellular mobile communication network component function code division multiple access (CDMA) principle UMTS network related wireless technology CDMA2000-1X cellular mobile communication network structure ATM technology, CDMA2000-1X network channel UMTS protocol system, CDMA2000-1X network system status The principle of code division multiple access (CDMA) -- IP routing technology Implementation of IP tunneling technology in UMTS network based on WCDMA Air interface technology of UMTS network and AAA Service Technology Mobility management in UMTS networks, CDMA2000-1X packet switching solution, 1-, simple IP Technology Handover Technology of UMTS Network -- Example of CDMA2000-1X cellular mobile communication system based on MOTOROLA UMTS network power control technology, CDMA2000-1X packet switching solution, 3- mobile IP Technology Implementation of MOTOROLA (UMTS) cellular mobile communication system code division multiple access (CDMA) in CDMA2000