1. To enhance the spectrum efficiency, massive MIMO technology is introduced in 5G network, whose maximum number of antennas may reach 64T64R. True False 2. C-band is the main frequency band of 5G....

Extracted text: 1. To enhance the spectrum efficiency, massive MIMO technology is introduced in 5G network, whose maximum number of antennas may reach 64T64R. True False 2. C-band is the main frequency band of 5G. Currently, a maximum of 100 MHz bandwidth can be deployed. Uplink and downlink imbalance can be resolved by the uplink and downlink decoupling feature. O True False 3.The 5G network features high rate, low latency, and massive connections, and can better support vertical industry applications. O True False