6.3B Frequency error for UL OLTD
25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)
The UE modulated carrier frequency at each transmit antenna connector shall be accurate to within ±0.1 PPM observed over a period of one timeslot compared to the carrier frequency received from the Node B. These signals will have an apparent error due to Node B frequency error and Doppler shift. The signals from the Node B must be averaged over sufficient time that errors due to noise or interference are within the above ±0.1PPM figure. The UE shall use the same frequency source for both RF frequency generation and the chip clock.