Method and apparatus for transmitting and receiving control information in a wireless communication system

A method for receiving control information at a Mobile Station (MS) in a wireless communication system, the method comprising:

• receiving from a Base Station (BS) control information including a Cyclic Redundancy Check (CRC) masked by a CRC mask including a bit stream of a predetermined length and an indicator indicating the bit stream;
• and
• decoding the control information and checking the masked CRC,
• wherein the indicator indicates whether the bit stream included in the CRC mask includes a Random Access IDentifier (RAID).

A Base Station (BS) for transmitting control information in a wireless communication system, comprising:

• a processor;
• a reception module;
• a transmission module;
• and
• an antenna for transmitting a radio signal received over the air to the reception module and transmitting a radio signal received from the transmission module over the air,
• wherein the processor controls a Cyclic Redundancy Check (CRC) to be masked by a CRC mask including a bit stream of a predetermined length and an indicator identifying the bit stream and controls control information including the masked CRC to be transmitted to at least one Mobile Station (MS) through the transmission module, and
• wherein the indicator indicates whether the bit stream included in the CRC mask includes a Random Access IDentifier (RAID).

A Mobile Station (MS) for receiving control information in a wireless communication system, comprising:

• a processor;
• a reception module;
• a transmission module;
• and
• an antenna for transmitting a radio signal received over the air to the reception module and transmitting a radio signal received from the transmission module over the air,
• wherein the processor controls control information including a Cyclic Redundancy Check (CRC) masked by a CRC mask including a bit stream of a predetermined length and an indicator indicating the bit stream to be received from a Base Station (BS) and to be decoded and controls the masked CRC to be checked,
• wherein the indicator indicates whether the bit stream included in the CRC mask includes a Random Access IDentifier (RAID).