The present invention relates to a wireless communication system that
counts UEs using an MBMS, and a method thereof. The wireless
communication system is connected with a UE through a radio link, and
includes a Node B and a controlling radio network controller (CRNC). The
Node B receives sequence setting information on a sequence included in a
preamble transmitted from the UE from a network manager. The CRNC
controls the Node B, detects a sequence according to whether to use an
MBMS based on the sequence setting information, and performs a counting
process for counting UEs based on whether the UE uses the MBMS.
According to the present invention, counting of UEs using an MBMS can be
efficiently performed by using a predetermined sequence. Particularly,
the counting process can be simplified by reducing complexity in access
probability management of a network manager, thereby increasing
efficiency in data transmission by reducing signaling for random access
probability and omitting a random access probability calculation process.