The so-called third-generation mobile communication technology, that is, 3G network technology, compared with the first-generation mobile communication technology (ie 1G) and the second-generation digital mobile phone communication technology (ie 2G), 3G mobile phones mainly combine wireless communication and the Internet, etc. Communication technology is fully combined to form a new mobile communication system. This mobile technology can handle images, music and other media forms, in addition, it also includes some business functions such as conference calls. In order to support the above-mentioned functions, the wireless network can fully support different data transmission speeds, that is, it can provide data transmission speeds of at least 2Mbps, 384kbps and 144kbps whether it is indoors, outdoors, or in a driving environment. .
The role of 3G 2110-2170MHz is not inferior to 4G, and 3G is still the mainstream communication frequency band in North America.