Patent ID: 8861462

Claim:
A method for transmitting an uplink (UL) or downlink (DL) grant in a wireless communication system supporting UL and DL multiple input multiple output (MIMO), the method comprising: generating control information by determining a downlink control information (DCI) format for the UL or DL grant; attaching a cyclic redundancy check (CRC) for detecting an error to the generated control information; channel-coding the CRC-attached control information; and scrambling the coded control information using a scrambling code, wherein the scrambling code is UL grant-specifically or DL grant-specifically determined based on an initial value c int in accordance with an Equation, c int =2 13 ·n grant +└n S /2┘2 9 +N ID cell , and <Equation> wherein n s represents a slot number within a radio frame, N ID cell represents a physical layer cell identity, and n grant represents a parameter indicating the UL or DL grant.