- there are UL resources allocated for transmission or there is a PUCCH transmission on this cell , and the required power backoff due to power management ( as allowed by P - MPRc as specified in TS 38 . 101 - 1 [ 14 ] , TS 38 . 101 - 2 [ 15 ] , and TS 38 . 101 - 3 [ 16 ] ) for this cell has changed more than phr - Tx - PowerFactorChange dB since the last transmission of a PHR when the MAC entity had UL resources allocated for transmission or PUCCH transmission on this cell .