In a transmission device and method for a CDMA communication system, when a
shorter frame message is generated during transmission of a longer frame
message, the transmission of the longer frame message is interrupted,
whereupon the shorter frame message is immediately transmitted in place of
a portion of the longer frame message. In one embodiment, after the longer
frame message is interrupted and the shorter frame message is transmitted,
only the tail portion of the longer frame message is transmitted
thereafter. That is, the replaced portion of the longer frame message is
not transmitted following the shorter frame message transmission. In an
alternative embodiment, following the shorter frame message transmission,
the remainder of the longer frame message, from the point of interruption,
is transmitted in its entirety. In the latter case, the longer frame
message is delayed by the length of the shorter frame message.