| 摘要 |
A method for transmitting and receiving L1/L2 control information in an OFDMA(Orthogonal Frequency Division Multiple Access) system is provided to configure and transmit downlink scheduling information and uplink grant control information efficiently in case a base station transmits data to mobile terminals through a downlink. A base station divides downlink control information into a common control block and an individual control block(S210). The common control block contains the number of used control channels and location information(S220), and the individual control block contains downlink schedule information and uplink grant control information for each mobile terminal(S230). The downlink schedule information includes each mobile terminal's ID, downlink resource allocation information, additional control information, and CRC(Cyclic Redundancy Code) bits. The uplink grant control information includes each mobile terminal's ID, uplink resource allocation information, additional control information, and CRC bits. Using predefined transport resources and a predefined transport format, the base station transmits the common control block every TTI(Transmit Time Interval)(S240). The base station transmits the individual control block through a distributed or localized control channel(S250). |
