LTE does not use subcarrier power allocation. Uplink power control is for all RBs allocated to a certain UE; downlink power allocation is for the frequency band of the entire cell. LTE uplink has power control for path loss compensation and inter-cell interference coordination. Uplink power control can control PUSCH, PUCCH, and uplink SRS. The downlink PDSCH does not use power control, while the power control used by other DL control channels is semi-static power allocation in the form of semi-static power allocation. Since different channels use different coding methods, different transmit powers are configured for different downlink channels to ensure that each channel The coverage is the same.
In addition, the downlink RS RE uses power boosting for power configuration.
The so-called power control: It can be understood that the total transmit power of the receiving end is controlled near a target value.
The so-called power allocation: when the total transmission power is constant, the transmitting end assigns different power values ??to different transmission channels that are transmitted at the same time. In order to make different channels meet different link budget and BLER requirements