To send same information to a plurality of users efficiently by using a multi-cast parameter, sending data from a base station and allowing a mobile station to receive the multi-cast communication through the use of the multi-cast parameter.

An origination message is sent from a mobile station (MS) to a base station(BS) through an access channel. Then the BS sends a multi-cast group number to the MS. Then the MS adjusts a CDMA(code division multiple access) receiver to release scrambling. Then multi-cast information is used by an output of the CDMA receiver and a path is selected toward a display device of the MS in the succeeding step or a path is selected to an external device such as a personal computer through base band data connection in the succeeding step. Or the path is selected toward the both.