Why is power control no longer important in the LTE system?

First, we need to understand power control (3 gppts 36.213). When the mobile phone is far away from the base station, in order to ensure the quality of the call, we need to increase the sending power appropriately. When the distance is far to a certain extent, but there is no available peripheral cell, you need to reduce the service quality (e.g. bitrate ).

In 3G networks such as UMTS and WCDMA, power control is needed at cell edge since channels are interfere each other.

In the LTE network, downlink and uplink are orthogona, so power control is not so important, to reduce complexity cancel Power Control