Patent ID: 6545455
Filing Date: 2003-04-08
Classification: H04W

Abstract:
An upstream channel overload detection circuit for a CDMA (Code Division Multiple Access) mobile communication system, comprising:an electric field measurement means for detecting, in a base station, electric field strength levels of reception signals from a plurality of mobile terminals and for outputting the strength levels and for outputting a base station noise level value that represents a noise level when there is no transmission power from the plurality of mobile terminals; a first storage means for storing the base station noise level value output from the electric field measurement means; a second storage means for storing a threshold level value which corresponds to an allowable number of transmissions from the plurality of mobile terminals; a comparing means for comparing the strength levels from the electric field measurement means with a sum value obtained by adding the base station noise level value from the first storage means to the threshold level value from the second storage means; and wherein the comparing means determines an occurrence of an upstream channel overload based on the strength levels, the base station noise level value, and the threshold level value.