With the development of the mobile communication industry, the role of these means of increasing capacity fluctuates over time. However, an unchanging theme is: the low-hanging fruit has been picked, and it is difficult to obtain significant benefits. getting bigger.
Assuming that all other conditions remain the same, the transition from 4G to 5G can increase spectrum efficiency by 20%-30%. The number of global macro base stations deployed is growing at a high single-digit percentage every year. Small cell deployment is accelerating, but at the same time, co-channel densification without beamforming technology will increase interference between base stations, thereby limiting the room for growth.