Multi-carrier code division multiple access / frequency division multiple hybrid base station system, data transmission method and mobile communication system using same

摘要

The present invention relates to a base station system, a data transmission method, and a mobile communication system using a multicarrier code division multiple access (CDMA) / frequency division multiple (FDM) hybrid method, By setting the modulation mode of the traffic signal differently according to the number of mobile stations in a specific base station, a base station system, a data transmission method, and a mobile communication system using a multi-carrier code division multiple access method, which can accommodate many mobile stations The purpose is to provide.;In order to achieve the above object, in the present invention, a base station controller determines a modulation mode according to the number of mobile stations present in a cell, and transmits the determined modulation mode in the paging signal. Traffic generated by multiplying the user data bits by a predetermined symbol according to the modulation mode determined by the controller, multiplying the symbol-repeated user data bits by the number of carriers and the pseudo-noise code for the traffic. Modulate multiple carriers with a spread spectrum signal.