source: LG U+'s presentation, "5G Infrastructure: Introduction Status and Issues" @ KRnet 2017 on June 26, 2017

1. What mobile operators want for 5G RAN ...

2. What LG U+'s testing at 5G prototype base stations found 

3. What LG U+'s testing the Massive MIMO antenna found 

Better mobility and beamforming performance is essential for smoother deployment and operation. 

4. What LG U+'s reviewing the 5G base station architecture found 

PHY splitting for 20 Gbps radio speed, and virtual base stations for higher resource utilization are needed. 

5. Access network for 5G 

Building a high-performing 5G infrastructure requires an access network with improved function, performance and cost competitiveness.

See Also,

Introduction Status and Issues of LG U+'s NFV/SDN, Netmanias One-Shot Gallery