Mobile broadcasting receiver for reducing power consumption and method thereof

A mobile broadcasting receiver receiving a transmitting frame including a synchronization channel, a fast information channel (FIC) and a main service channel (MSC), the mobile broadcasting receiver comprising:

• a tuner for tuning radio frequency (RF) signals received through an antenna to extract a RF signal which a target broadcasting service is multiplexed;
• an analog-digital converter (ADC) for converting the extracted RF signal to a digital signal;
• a demodulator for performing a fast fourier transform (FFT) and a differential decoding, and separating the FIC and the MSC from the digital signal by de-interleaving;
• and
• a controller for calculating OFDM symbols carrying service components of the target broadcasting service in the MSC based on multiplex configuration information (MCI) in the FIC, setting up a time regions of receiving the service components of the target broadcasting service in the transmitting frame based on the calculated OFDM symbols as a power-on regions and turning on the tuner and the ADC only in the power-on region.

A method for reducing power consumption in a mobile broadcasting receiver including an analog processing unit for receiving a radio frequency (RF) signal of a transmitting frame having a synchronization channel, a fast information channel (FIC) and a main service channel (MSC) and converting the RF signal of the modulated transmitting frame to a digital signal, the method comprising the steps of:

• a) determining addresses of capacity units carrying service components of a target broadcasting service based on multiplex configuration information (MCI) in the FIC of the transmitting frame;
• b) calculating a transmitting order number of an OFDM symbol carrying the determined addresses of capacity units based on the determined addresses of capacity units;
• and
• c) setting up a time region of receiving a synchronization channel, the FIC, the calculated transmitting order of OFDM symbol and an OFDM symbol which is previously received than the calculated transmitting order of the OFDM symbol in the transmitting frame as the power-on region and driving the analog processing unit only in the power-on region.