What's the difference between 4G network and 3G network?

The differences between 4G network and 3G are as follows:

1, speed difference

(1) The downlink rate of 4G network can reach 100 Mbps to 150 Mbps, which is 20 to 30 times that of 3G, and the upload speed can also reach 20 Mbps to 40 Mbps. This rate can meet the requirements of almost all users for wireless services.

(2)3G networks can reach several megabytes or even 20 megabytes per second, but the network speed is slower than that of 4G networks.

2. Differences in compatibility

(1)4g can use 4g network, and is backward compatible with 3G and 2G networks.

(2)3G network standard does not support 4G network, and 3G is compatible with 2G network.

3, the difference between the core construction technology

The core technology of (1)4G mobile communication system is orthogonal multi-task frequency division multiplexing (OFDM). Using this technology, we can realize wireless communication value-added services, such as wireless local area network (WLL), digital audio broadcasting (DAB) and so on.

(2) The core technology of 3G mobile communication system is CDMA.

Baidu encyclopedia -4G network

Baidu Encyclopedia -3g Network