APPARATUS AND METHOD FOR CALL ADMISSION CONTROL IN BROADBAND WIRELESS COMMUNICATION SYSTEM

摘要

An apparatus and a method for call admission control in a broadband wireless communication system are provided to perform the call admission control by referring wireless capacity change and input traffic variation in the broadband wireless communication system. An RF receiver(201) converts RF signals into base band analog signals. An ADC(Analog to Digital Converter)(203) converts the analog signals provided from the RF receiver into the digital signals. An OFDM(Orthogonal Frequency Division Multiplexing) demodulator(205) outputs frequency division signals by performing the FFT(Fast Fourier Transform) to the time division signals provided from the ADC. A de-mapping device(207) reconfigure the signals mapped in the frequency division into a configuration before mapped. The demodulator and a decoder(209) output the information bit rows by demodulating and decoding the signals provided from the de-mapping device. A terminal information management unit(213) maintains status information of each terminal. A call management unit(215) manages information about the call. A wireless capacity management unit(217) manages entire frame usage ratio information.