NO CHARGE INFORMATION AND CHARGE INFORMATION BROADCASTING SERVICE METHOD OF MOBILE COMMUNICATION SYSTEM OF CODE DIVISION MULTI-ACCESS METHOD

摘要

PURPOSE: A method is provided to provide charge broadcasting service and no charge broadcasting service by an efficient channel assignment of a communication system using CDMA method. CONSTITUTION: The no charge information broadcasting service includes two steps. A first step is that a base station transmits a no charge information channel to a large number of mobile station through a call channel, the base station broadcasts a no charge information to the large number of mobile station through the no charge information channel. A second step is that the a designated mobile station demodulates the call channel which is received the base station and detects an information of the no charge information channel, and according to the information of the no charge information channel, demodulates the no charge information channel which is broadcasted, and receives the no charge information. A charge information broadcasting service includes five steps. A first step is to demodulate the call channel received from the base station and detect a kind of the charge information channel. A second step is to transmit the charge information and own identification code to the base station and require the charge information service. A third step is to transmit an information of the charge information channel to the mobile station. A fourth step is to transmit a response signal confirming a service requirement to the base station. A fifth step is to transmit the charge information to the mobile station and provide the charge information.