Brief introduction to the development of mobile network

The mobile network

G Introduction to the mobile network

Discuss the operation characteristics and problems of several important technologies of wireless technology

Fourth generation mobile network

generation	Peak data rate	explain
1G	No data	Simulation system
2G	Kbit/s	First generation digital system , As a substitute for or coexist with the analog system
3G	Mbit/s	Private digital network , Deploy in parallel with the simulation system
4G	Gbit/s	Digital and packet networks

Every generation Wireless technology is marked by its peak spectral efficiency , In order to make users understand more intuitively , This efficiency translates into data transfer rate , So-called “ Peak value ” It refers to the transmission rate measured under ideal conditions . The real performance of each network depends on the provider and their configuration of the network 、 The number of active users in each cell 、 Location specific wireless environment 、 Equipment used 、 And other factors that affect wireless performance vary .

generation	Data rate	Delay time
2G	100-400Kbit/s	300-1000ms
3G	0.5-5Mbit/s	100-500ms
4G	1-50Mbit/s	<100ms

3GPP( Third generation partner project )

Responsible for development UMTS, This is a 3G Technology and GSM The product of the combination of Technology . Later, I was also responsible for maintenance GSM Standards and develop new LTE standard

3GPP2

Responsibility based on CDMA2000, Developed by Qualcomm IS-95 Subsequent technical development of Standards 3G standard

generation	organization	Release
2G	3GPP	GSM
2G	3GPP2	IS-95
2.5G  2.75G	3GPP 3GPP2	GPRS EDGE CDMA2000
3G	3GPP 3GPP2	UMTS CDMA2000 1X EV-DO Release 0
4G	3GPP	LTE-Advanced HSPA+Revision 11+