There is provided a method of transmitting power control information to a BSC
(Base Station Controller) in a BTS (Base station Transitive System) of a mobile
communication system. The BTS receives forward power control (FPC) mode information
indicating a slow power control from the BSC and transmits the FPC mode information
to an MS (Mobile Station). The BATS extracts an EIB (Erasure Indicator Bit) that
is a power control command in a frame period from a reverse pilot channel received
from the MS according to the FPC mode information, determines the status of the
EIB, and transmits a reverse SCH (Supplemental Channel) message including the EIB
status information to the BSC.