Try to take a look at the following links:
https://www.sharetechnote.com/html/Handbook_LTE_RSRP_EPRE_TotalPower.html
https://www.sharetechnote.com/html/Handbook_LTE_DownlinkPowerAllocation.html
Try to take a look at the following links:
https://www.sharetechnote.com/html/Handbook_LTE_RSRP_EPRE_TotalPower.html
https://www.sharetechnote.com/html/Handbook_LTE_DownlinkPowerAllocation.html