6.3E Frequency error for DB-DC-HSUPA
25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)
For UE supporting DB-DC-HSUPA operation, each UE modulated carrier frequency shall be accurate to within ±0.1 PPM observed over a period of one timeslot compared to the associated downlink 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.