Disclosed is a method for indicating an end of transmitting data frames in
order to enable a UTRAN (UMTS (Universal Mobile Telecommunications
System) Terrestrial Radio Access Network) to assign a common packet
channel to another user equipment (UE) in a UE for a CDMA mobile
communication system. The UE requests assignment of any one of a number
of common packet channels assignable in the UTRAN; the UE is assigned a
common packet channel by the UTRAN in response to the to request; the UE
sequentially transmits the data frames and their associated control
frames over the assigned common packet channel; and the UE transmits at
least one control frame, in an appointed field of which a given bit
pattern appointed with the UTRAN is registered, in order to inform the
UTRAN of an end of data transmission upon completing data transmission
through the data frames.