Abstract: A method for retransmitting data in wireless communication system is disclosed. MS can receive a NACK (Not-Acknowledge) signal from a base station (BS) through a specific downlink subframe of a specific frame in a first superframe, and the MS can retransmits the data using a second uplink subframe in a first frame in a second superframe subsequent to a first superframe. In this case, a index of the second uplink subframe may be 1. The wireless communication system can support the Half-Frequency Division Duplex (H-FDD) scheme. A first uplink subframe in the first frame of the second superframe can be punctured.

Abstract: The present invention relates to a method for preventing a peer discovery signal collision, which can occur in a device-to-device (D2D) communication system, and to a wireless device using same. According to one embodiment of the present invention, a method for communicating between wireless devices by using a peer discovery slot is provided. The method comprises the steps of transmitting a first peer discovery signal through a first peer discovery channel that is selected from a plurality of peer discovery channels, receiving a second peer discovery signal that is transmitted by a neighboring wireless device, confirming a second discovery channel, from which the second peer discovery signal is detected, from the plurality of peer discovery channels, and transmitting a feedback signal through a response channel that corresponds to the second peer discovery channel from a plurality of response channels.

Abstract: A method for transmitting and receiving control information in a wireless communication system is disclosed.

Abstract: The present invention relates to a method for providing control information in a mobile communication system. More specifically, the invention relates to a method for providing control information through a network in mobile communication. The method comprises: a step for configuring the information associated with plural frequency resource groups and the power levels thereof in the control information of preset data format, wherein the plural frequency resource groups are for application of FFR (Fractional Frequency Reuse), and a step for transmitting the control information to at least one terminal.

Abstract: A first transparent relay station (RS) can receive a signal from a base station (BS) corresponding to superordinate node of the first transparent RS or a second RS corresponding to superordinate non-transparent RS the first transparent RS through a downlink receive zone, and the first transparent RS can transmit the signal received through the downlink receive zone to a mobile station (MS) through a downlink transmit zone, wherein a downlink subframes of the first transparent RS is located the downlink receive zone and the downlink transmit zone in order.

Abstract: A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

Abstract: Disclosed is a method for conducting communication using a frame structure which supports two or more wireless communication schemes, and an apparatus using the method. A method for constructing an FDD frame according to the present invention efficiently supports a legacy system and an enhanced system using an H-FDD frame structure. Further, the method for constructing an FDD frame according to the present invention efficiently supports a terminal and an H-FDD terminal, which use different communication systems.

Abstract: The present description relates to a method for performing client cooperation transmission through a group resource allocation (GRA) scheme in a wireless access system, comprising the following steps: receiving a group configuration message, including client group information, from a base station, wherein said group configuration message further includes client cooperation-enabled information that indicates whether or not the client group is concerned with the client cooperation transmission; determining whether or not to participate in the client cooperation by means of the client cooperation-enabled information; and transmitting the result of the determination on whether or not to participate in the client cooperation to the base station.

Abstract: The mobile station for transceiving signals using a predetermined time division duplex (TDD) frame structure in a wireless communication system includes a receiver for receiving a midamble from a base station (BS), and a relay station (RS). The receiver receives, from the BS, a first midamble through a second subframe of a downlink access zone of the BS and/or through a first subframe of a downlink relay zone that follows the downlink access zone. Alternatively, the receiver receives, from the RS, a second midamble through a second subframe of a downlink access zone of the RS. A transition gap in a downlink region is located in the last subframe of the downlink access zone of the RS, which follows the downlink access zone of the RS, and a transition gap in an uplink region is located in a first subframe of an uplink relay zone of the RS.

Abstract: The present invention provides an embodiment of a method and system for applying a hybrid automatic repeat request (HARQ) scheme to a system employing a relay station. According to one embodiment of the present invention, a frame including an access zone and a relay zone can be configured based on the HARQ timing which can be calculated based on the structure of the access zone and relay zone. Also, according to one embodiment of the present invention, the structure of the access zone and relay zone can be determined by multiplexing communication systems that support two kinds of systems different from each other. According to one embodiment of the present invention, the HARQ scheme can be applied even to a frame including an access zone and a relay zone, by calculating the HARQ timing.

Abstract: A method and apparatus of relaying data in a wireless communication system is provided. A relay station (RS) receives relay zone allocation information. A plurality of relay zones is allocated in a resource region by the relay zone allocation information. The relay station receives data transmitted from a super-ordinate station, detects a tunneling traffic destined to a subordinate station from the data, and transmits the tunneling traffic to the subordinate station. The tunneling traffic is transmitted over one of the plurality of relay zones.

Abstract: Provided are a method and device for allocating wireless resources in a wireless communication system. The wireless resource allocating method comprises allocating a machine type communication (MTC)-dedicated wireless resource and a general wireless resource, and communicating with at least one MTC device through the MTC-dedicated wireless resource. Herein, the MTC-dedicated wireless resource supports only the communication with the at least one MTC device, and the MTC-dedicated wireless resource and the general wireless resource may be different from each other.

Abstract: A method of transmitting a signal of a mobile station that performs communication with a plurality of cells in a wireless communication system comprises transmitting a control signal or a data signal through an asynchronous channel to a neighboring cell which is not synchronized with the mobile station, the asynchronous channel including cyclic prefix and guard time.

Abstract: Provided are a method and an apparatus for transmitting a frame in a wireless communication system including a relay station. A base station sets a frame including a downlink (DL) access zone for transmitting a signal to the relay station and a DL relay zone for transmitting the signal to the relay station or a terminal, and transmits the frame. The DL access zone comprises a multiple-input multiple-output (MIMO) midamble for the terminal and the DL relay zone comprises an R-amble as an additional MIMO midamble.

Abstract: A collaborative MIMO method using a sounding channel in a multi-cell environment is disclosed. The method includes acquiring, by a first base station providing a service for a first cell, first CSI of a first downlink channel between the first base station and a mobile station, transmitting, to a second base station, a signal including information requesting that the second base station providing a service for a second cell acquire second CSI of a second downlink channel between the second base station and the mobile station, and acquiring, by the second base station, the second CSI. The mobile station is served by the first base station.

Abstract: The present invention relates a method for transmitting and receiving data in a mobile communication system. More specifically, the invention relates to a method through which a terminal in a cell boundary receives data in a mobile communication system that supports MIMO (Multi Input Multi Output). The method comprises: a step for receiving a first data stream transmitted through multiple transmission antennas from a serving base station, a step for pre-coding a second data stream to make the time delay of the second data stream be different from that of the first data stream and receiving the second data stream from a collaborating base station, and a step for restoring the data based on the first and second data streams.

Abstract: A data transmission method in a system comprising at least one or more relays includes transmitting by a mobile station a bandwidth allocation request message to a relay, receiving by the mobile station a bandwidth allocation message from the relay, the bandwidth allocation message including information for indicating an offset from a frame where the bandwidth allocation message is contained, waiting by the mobile station for an uplink frame or uplink subframe indicated by the offset from the frame where the bandwidth allocation message is contained, and transmitting data on the indicated frame or subframe.

Abstract: A method for transmitting and receiving data in a cooperative Multiple-Input Multiple-Output (MIMO) mobile communication system is disclosed. The method includes selecting a transmission path for transmitting precoding-related feedback control information to one or more cooperative base stations operating in the cooperative MIMO mode, and transmitting the precoding-related feedback control information to the one or more cooperative base stations through the selected transmission path.

Abstract: The present invention relates to a method for preventing a peer discovery signal collision, which can occur in a device-to-device (D2D) communication system, and to a wireless device using same. According to one embodiment of the present invention, a method for communicating between wireless devices by using a peer discovery slot is provided. The method comprises the steps of transmitting a first peer discovery signal through a first peer discovery channel that is selected from a plurality of peer discovery channels, receiving a second peer discovery signal that is transmitted by a neighboring wireless device, confirming a second discovery channel, from which the second peer discovery signal is detected, from the plurality of peer discovery channels, and transmitting a feedback signal through a response channel that corresponds to the second peer discovery channel from a plurality of response channels.

Abstract: A method of transmitting a frame of a relay station (RS) in a wireless communication system employing the RS is provided. The method includes: receiving frame configuration information on an RS frame from a base station (BS); configuring a frame including a downlink (DL) access zone for transmitting a signal to a relay user equipment (UE), a DL receive zone for receiving a signal from the BS, an uplink (UL) access zone for receiving a signal from the relay UE connected to the RS, a UL transmit zone for transmitting a signal to the BS, and a transition gap; and transmitting a signal in at least one of the UL access zone and the UL transmit zone, wherein the transition gap is a switching time between a transmission operation and a reception operation of the RS and is included in at least one of the DL access zone and the UL transmit zone.