Method and apparatus for decoding a control channel in a wireless communication system

A method of decoding a control channel in a wireless communication system, the method comprising;

• calculating a number of sub-bursts and positions of the sub-bursts to be used during a next decoding, based on at least one of a signal-to-noise ratio or Doppler frequency of at least one burst;
• receiving and decoding sub-bursts at the calculated positions to recover a message received via the control channel;
• and
• a terminal entering into a sleep state when the decoding is successful.

A decoding method performed by a terminal, the method comprising;

• calculating a number of sub-bursts to be used during a next decoding and positions of the sub-bursts, based on at least one of a signal-to-noise ratio or Doppler frequency of at least one burst from among a plurality of bursts;
• comparing the calculated number of sub-bursts with a reference value;
• and
• receiving and decoding the calculated number of sub-bursts, or entering into a sleep state based on a result of the comparison.

A wireless communication terminal comprising:

• a demodulator receiving and demodulating a message transmitted via a control channel in response to a control signal and outputting the demodulated message and an indication signal;
• a de-interleaver receiving and de-interleaving the demodulated message output by the demodulator;
• a decoder decoding a signal output by the de-interleaver and outputting a decoded signal;
• a block decoder decoding the decoded signal output by the decoder to recover a paging message and outputting the recovered paging message and a state of the recovered paging message;
• and
• a controller calculating a number of sub-bursts to be used during a next decoding and positions of the sub-bursts, based on the indication signal, and performing one of an operation of outputting the control signal for controlling an enable/disable operation of the demodulator and an operation of making the terminal enter into a sleep state, based on the result of the calculation.