Method for calculating the number of chennel Elements in mobile communication system

The invention, in a code division multiple access system comprising a plurality of base stations, a method for calculating the number of channels in the forward link of a base station, a predetermined average number of concurrent users, considering a base station environment, the selection of mean simultaneous the process of using the number of users obtained the number of concurrent users, distribution and transmission power shortage probability of the base station within the service area of ​​the base station, step of determining whether said power shortage probability exceeds a predetermined first threshold and the the power shortage probability characterized in that it comprises the step of calculating the number of channels to avoid the first total outage probability of the number of concurrent users within the service area does not exceed the threshold value exceeds a predetermined second threshold It shall be. Because of this relatively accurately it reflects the real than the conventional method because it has the effect of more accurately calculating a base station implementation the number of channels.