Patent ID: 7260404

Claim:
A frequency allocation method, in a code division multiplexing communication system that uses a plurality of frequencies, comprising: monitoring, for each frequency, remaining resources and number of calls for each call type which are allocated to the frequency; checking whether a new call is of a low-speed call type or a high-speed call type when the new call generates; if the new call is of the low-speed call type, finding frequencies that are capable of being allocated to the new low-speed call by taking said remaining resources into consideration, and specifying a frequency for which the number of calls of said low-speed call type is smallest from among said frequencies; if the new call is of the high-speed call type, finding frequencies that are capable of being allocated to the new high-speed call by taking said remaining resources into consideration, and specifying a frequency for which the number of calls of said high-speed call type is smallest from among said frequencies; and allocating said specified frequency to the new call.