3G networks (English: 3rd-generation), is the use of supports
high-speed data
transmission of cellular mobile communication
technology of the third generation mobile communication technology made of
lines and equipment laying communications network.3G network multimedia
communication means such as wireless communications and the Internet combined
with the new generation of mobile communication systems.
3G:
Third-generation mobile communication technology (English: 3rd-generation),
refers to support high-speed data transmission cellular mobile communications
technology. 3G
services can simultaneously transmit voice (call) and data information (e-mail,
instant messaging, etc.). Representative
feature is to provide high-speed data services.
3G is the 3rd Generation English acronym refers to the third generation mobile communication technology. Relative to the first generation analogue phones (1G) and second-generation GSM, CDMA and other digital mobile phone (2G), third generation mobile phone (3G) Generally speaking, refers to the generation of the wireless communications and multimedia communications with the Internet The mobile communication system.
The main difference between 2G and 3G is to enhance the speed voice and data transmission, which is better able to achieve in the global wireless roaming, and process images, music, video streaming and other forms of media, including web browsing, conference calls, e-commerce and other information services, taking into account also the good compatibility with the existing second-generation systems. To provide this service, the wireless network must be able to support different data transfer speeds, ie indoor, outdoor and vehicular environments can support at least 2Mbps (megabits / second), 384kbps ( kilobits / second) and 144kbps transmission rate (this value may vary depending on the network environment). 3G is a third generation communication network, currently does not support network other than GSM and CDMA, GSM equipment uses a frequency division multiple access, and code division CDMA using a spread spectrum technique, advanced power and voice activation may be provided at least 3 times greater than GSM network capacity, the industry will be 3G CDMA technology as a mainstream technology, the ITU identified three wireless interface standards are CDMA2000, WCDMA, TD-SCDMA, ie domestic CDMA network can smooth the transition to 3G, 3G is the main feature can provide mobile broadband multimedia services.
3G is the 3rd Generation English acronym refers to the third generation mobile communication technology. Relative to the first generation analogue phones (1G) and second-generation GSM, CDMA and other digital mobile phone (2G), third generation mobile phone (3G) Generally speaking, refers to the generation of the wireless communications and multimedia communications with the Internet The mobile communication system.
The main difference between 2G and 3G is to enhance the speed voice and data transmission, which is better able to achieve in the global wireless roaming, and process images, music, video streaming and other forms of media, including web browsing, conference calls, e-commerce and other information services, taking into account also the good compatibility with the existing second-generation systems. To provide this service, the wireless network must be able to support different data transfer speeds, ie indoor, outdoor and vehicular environments can support at least 2Mbps (megabits / second), 384kbps ( kilobits / second) and 144kbps transmission rate (this value may vary depending on the network environment). 3G is a third generation communication network, currently does not support network other than GSM and CDMA, GSM equipment uses a frequency division multiple access, and code division CDMA using a spread spectrum technique, advanced power and voice activation may be provided at least 3 times greater than GSM network capacity, the industry will be 3G CDMA technology as a mainstream technology, the ITU identified three wireless interface standards are CDMA2000, WCDMA, TD-SCDMA, ie domestic CDMA network can smooth the transition to 3G, 3G is the main feature can provide mobile broadband multimedia services.