Method of transmitting and receiving control information in a wireless communication system

A method for receiving control information in a process of data transmission and reception in a frequency division duplex (FDD) scheme, the method carried out by a mobile station of a half-FDD (H-FDD) system, the method comprising:

• receiving information about a number of orthogonal frequency division multiplexing (OFDM) symbols contained in an H-FDD downlink zone in an FDD frame from a base station through a ‘Number of orthogonal frequency division multiple access (OFDMA) symbols’ field of a downlink mobile application part (DL-MAP);
• and
• receiving information about a number of OFDM symbols contained in an H-FDD uplink zone in the FDD frame from the base station through a ‘Number of OFDMA symbols’ field of an uplink MAP (UL-MAP),
• wherein ratio of a number of subframes allocated to the mobile station of the FDD system to a number of subframes allocated to the mobile station of the H-FDD system is 5:3,
• wherein if an FDD downlink zone and a FDD uplink zone are overlapped in the FDD frame, the information transmitted through the ‘Number of OFDMA symbols’ field of the DL-MAP and the information transmitted through the ‘Number of OFDMA symbols’ field of the UL-MAP are configured by using Equation A so that the H-FDD uplink zone and the FDD unlink zone do not overlap each other:
• wherein Equation A is defined as follows:
• Number of OFDMA symbols in DL MAP×length of OFDMA symbol+TTG+Number of OFDMA symbols in UL MAP×length of OFDMA symbol≦(X−Number of symbols in a zone in which the FDD downlink zone and the FDD uplink zone are overlapped)*length of OFDMA symbol,
• wherein TTG is a Transmit Transition Gap for switching from downlink to uplink in an H-FDD zone, and
• X is a number of OFDMA symbols contained in one frame.

A base station in a wireless communication system supporting a mobile station of a half frequency division duplex (H-FDD) system and a mobile station of an FDD system, the base station comprising:

• a radio frequency (RF) module;
• and
• a processor configured to control the RF module,
• wherein the processor is configured to transmit, to the mobile station of the H-FDD system, information about a number of orthogonal frequency division multiplexing (OFDM) symbols contained in an H-FDD downlink zone in an FDD frame through a ‘Number of orthogonal frequency division multiple access (OFDMA) symbols’ field of a downlink mobile application part (DL-MAP), and to transmit, to the mobile station of the H-FDD system, information about a number of OFDM symbols contained in an H-FDD uplink zone in the FDD frame through a ‘Number of OFDMA symbols’ field of an uplink MAP (UL-MAP),
• wherein ratio of a number of subframes allocated to the mobile station of the FDD system to a number of subframes allocated to the mobile station of the H-FDD system is 5:3,
• wherein if an FDD downlink zone and an FDD uplink zone are overlapped in the FDD frame, the information transmitted through the ‘Number of OFDMA symbols’ field of the DL-MAP and the information transmitted through the ‘Number of OFDMA symbols’ field of the UL-MAP are configured by using Equation A so that the H-FDD uplink zone and the FDD uplink zone are not overlapped each other:
• wherein Equation A is defined as follows:
• Number of OFDMA symbols in DL MAP×length of OFDMA symbol+TTG+Number of OFDMA symbols in UL MAP×length of OFDMA symbol≦(X−Number of symbols in a zone in which the FDD downlink zone and the FDD uplink zone are overlapped)*length of OFDMA symbol, and
• wherein TTG is a Transmit Transition Gap for switching from downlink to uplink in an H-FDD zone, and
• X is a number of OFDMA symbols contained in one frame.

A mobile station comprising:

• a radio frequency (RF) module;
• and
• a processor configured to control the RF module,
• wherein the processor is configured to receive information about a number of orthogonal frequency division multiplexing (OFDM) symbols contained in H-FDD downlink zone in an FDD frame from a base station through a ‘Number of OFDMA symbols’ field of a downlink mobile application part (DL-MAP), and to receive information about a number of OFDM symbols contained in an H-FDD uplink zone in the FDD frame from the base station through a ‘Number of orthogonal frequency division multiple access (OFDMA) symbols’ field of an uplink MAP (UL-MAP),
• wherein ratio of a number of subframes allocated to the mobile station of the FDD system to a number of subframes allocated to the mobile station of the H-FDD system is 5:3,
• wherein if an FDD downlink zone and an FDD uplink zone are overlapped in the FDD frame, the information transmitted through the ‘Number of OFDMA symbols’ field of the DL-MAP and the information transmitted through the ‘Number of OFDMA symbols’ field of the UL-MAP are configured by using Equation A so that the H-FDD uplink zone and the FDD uplink zone do not overlap each other:
• wherein Equation A is defined as follows:
• Number of OFDMA symbols in DL MAP×length of OFDMA symbol+TTG+Number of OFDMA symbols in UL MAP×length of OFDMA symbol≦(X−Number of symbols in a zone in which the FDD downlink zone and the FDD uplink zone are overlapped)*length of OFDMA symbol, and
• wherein TTG is a Transmit Transition Gap for switching from downlink to uplink in an H-FDD zone, and
• X is a number of OFDMA symbols contained in one frame.