Patent ID: 9497721
Filing Date: 2016-11-15
CPC Classification: H04L,H04W

Claim Text:
1. An uplink frequency control method, the method performed in a terminal having a first downlink and a first uplink with a first base station and a second downlink and a second uplink with a second base station, the method comprising: measuring a first downlink frequency offset with respect to the first downlink; measuring a second downlink frequency offset with respect to the second downlink; and correcting a frequency of the second uplink by using the measured first downlink frequency offset, wherein, the first downlink frequency offset includes a first frequency drift component and a first Doppler frequency component, and the second downlink frequency offset includes a second frequency drift component and a second Doppler frequency component, wherein the correcting includes: wherein the terminal is moving toward the second base station and moving away from the first base station.