A handover method in wireless telecommunication system supporting USTS is disclosed.
The method for performing a handover of a mobile station in an asynchronous wireless
telecommunication system supporting an uplink synchronous transmission scheme (USTS)
mode, includes the steps of: a) performing a mode conversion of the mobile station
from the USTS mode to a non-USTS mode based on a first signal measurement result
from the mobile station; and b) performing a handover for the mobile station. In
another embodiment of the present invention, the method further includes the step
of: c) performing a mode conversion from the non-USTS mode to the USTS mode based
on a second signal measurement result from the mobile station.
