Abstract: A method performed by a user equipment (UE) in a wireless communication system, includes receiving a sounding reference signal (SRS) configuration via a radio resource control (RRC) signaling, the SRS configuration indicating a subframe configured for SRS transmission; and transmitting an SRS based on the SRS configuration, wherein the SRS configuration includes an indicator indicating whether an aperiodic SRS transmission or a periodic SRS transmission is performed in the subframe configured for SRS transmission, wherein, if the indicator indicates that the aperiodic SRS transmission is performed, the SRS is aperiodically transmitted in the configured subframe in response to reception of request information for requesting a transmission of the SRS, and wherein, if the indicator indicates that the periodic SRS transmission is performed, the SRS is periodically transmitted in the configured subframe.

Abstract: A method performed by a user equipment (UE) in a wireless communication system, includes receiving a sounding reference signal (SRS) configuration via a radio resource control (RRC) signaling, the SRS configuration indicating a subframe configured for SRS transmission; and transmitting an SRS based on the SRS configuration, wherein the SRS configuration includes an indicator indicating whether an aperiodic SRS transmission or a periodic SRS transmission is performed in the subframe configured for SRS transmission, wherein, if the indicator indicates that the aperiodic SRS transmission is performed, the SRS is aperiodically transmitted in the configured subframe in response to reception of request information for requesting a transmission of the SRS, and wherein, if the indicator indicates that the periodic SRS transmission is performed, the SRS is periodically transmitted in the configured subframe.

Abstract: The present disclosure relates to a method in which a base station transmits signals to a relay node in a multiuser multi-antenna (MIMO) wireless communication system. More particularly, the method includes: allocating one or more antenna ports to one or more relay nodes, respectively; mapping each of a plurality of downlink grant signals for the one or more relay nodes to a preset resource domain from among resource domains corresponding to one of the allocated antenna ports; mapping uplink grant signals or data signals for the one or more relay nodes to the resource domains corresponding to the allocated antenna ports; and transmitting the mapped signals to the one or more relay nodes.

Abstract: A method of transmitting a sounding reference signal (SRS) in a wireless communication system is discussed. The method according to one embodiment includes receiving a first UE-specific configuration indicating possible subframes for aperiodic SRS transmission via a radio resource control (RRC) signaling, wherein the possible subframes are periodically configured; receiving a physical downlink control channel (PDCCH) signal including request information of requesting aperiodic SRS transmission; and transmitting at least one SRS one time in response to the request information within the possible subframes.

Abstract: A method and wireless station for receiving signals. The wireless station receives, from a base station, a control signal on a first subframe indicated as a downlink (DL) subframe by a time division duplex (TDD) uplink-downlink (UL-DL) subframe configuration. The control signal includes first information indicating that at least one UL subframe indicated by the TDD UL-DL subframe configuration is reconfigured as a TDD DL subframe. The wireless station receives, from the base station, DL data on a second subframe which was indicated as a TDD UL subframe by the TDD UL-DL subframe configuration but is currently reconfigured as a TDD DL subframe by the control signal. The wireless station transmits, to the base station, UL data on a TDD UL subframe except for being reconfigured as the TDD DL subframe by the control signal.

Abstract: A method is provided for receiving a downlink signal at a downlink reception entity in a wireless communication system. Downlink control information is received by demodulating a Physical Downlink Control Channel (PDCCH) in a first resource block (RB) pair within an RB bundle by using a first Demodulation Reference Signal (DMRS). Downlink data is received by demodulating a Physical Downlink Shared Channel (PDSCH) in one or more second RB pairs scheduled by the downlink control information within the RB bundle by using a second DMRS based on an assumption that a same precoder is applied to the scheduled one or more second RB pairs.

Abstract: A semiconductor device includes a semiconductor substrate including an in-cell area and a scribe lane defining the in-cell area, a first overlay pattern on the semiconductor substrate, and a second overlay pattern adjacent to the first overlay pattern, wherein the first overlay pattern is a diffraction-based overlay (DBO) pattern and the second overlay pattern is a scanning electron microscope (SEM) overlay pattern.

Abstract: Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.

Abstract: A method of transmitting data in a wireless local access network, the method includes transmitting, by an access point (AP), a request-to-send (RTS) frame to a plurality of receiving stations, the RTS frame including recipient information and channel information, the recipient information indicating the plurality of receiving stations, the channel information indicating a plurality of subchannels allocated to the plurality of receiving stations; receiving, by the AP, a plurality of clear-to-send (CTS) frames from the plurality of receiving stations as a response to the RTS frame, each CTS frame being received through at least one subchannel allocated to a corresponding one of the plurality of receiving stations; and transmitting, by the AP, a physical layer protocol data unit (PPDU) to the plurality of receiving stations, the PPDU including address information indicating the plurality of receiving stations and a plurality of Aggregate-Medium Access Control (MAC) Protocol Data Units (A-MPDUs) for the plurality

Abstract: A method is provided for transmitting a downlink signal by a base station in a wireless communication system. A configuration of orthogonal frequency division multiplexing (OFDM) symbols is transmitted for a first partition of a subframe through higher layer signaling, and a Relay-Physical Downlink Control Channel (R-PDCCH) contained in at least the first partition of the subframe is also transmitted. If the R-PDCCH contains a downlink assignment, the first partition of the subframe is configured not to be used for a transmission of a Physical Downlink Shared Channel (PDSCH) corresponding the R-PDCCH.

Abstract: Facilitating frequency hopping for single carrier, frequency division multiple access (SC-FDMA) transmission is described herein. By way of example, user data transmitted within a transmission allocation unit can be frequency shifted with respect to time based slots of the allocation unit. As a result, frequency hopping can be accomplished while preserving single carrier constraints and a low peak to average power ratio (PAPR). Furthermore, various frequency shifted mechanisms are disclosed to accomplish preservation of single carrier restraints. For example, a scheduler can select between cyclic frequency shifting, transposed frequency shifting, and multiplexing of frequency selective scheduled and frequency hopped data based on an audit of scheduled data for the transmission allocation unit. As a result, the reduction in interference achieved through frequency hopping can be combined with the low PAPR for various data allocation configurations.

Abstract: A method and a user equipment (UE) configured with one or more cells for feeding back channel information are discussed. The method according to an embodiment includes receiving information on a maximum number of ranks; transmitting first channel information generated based on rank information; and transmitting second channel information which is generated based on the same rank information as the rank information used for generating the first channel information. The maximum number of ranks is used to determine the rank information.

Abstract: A method of transmitting data in a wireless local access network, the method includes transmitting, by an access point (AP), a request-to-send (RTS) frame to a plurality of receiving stations, the RTS frame including recipient information and channel information, the recipient information indicating the plurality of receiving stations, the channel information indicating a plurality of subchannels allocated to the plurality of receiving stations; receiving, by the AP, a plurality of clear-to-send (CTS) frames from the plurality of receiving stations as a response to the RTS frame, each CTS frame being received through at least one subchannel allocated to a corresponding one of the plurality of receiving stations; and transmitting, by the AP, a physical layer protocol data unit (PPDU) to the plurality of receiving stations, the PPDU including address information indicating the plurality of receiving stations and a plurality of Aggregate-Medium Access Control (MAC) Protocol Data Units (A-MPDUs) for the plurality

Abstract: Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.

Abstract: A method for transmitting a control signal, performed by a wireless device. The method according to one embodiment includes allocating resource elements (REs) for a control channel; and transmitting the control signal through the Res. Each RE in the REs for the control channel is associated with one out of two antenna ports. The two antenna ports are included in a plurality of antenna ports used for transmitting demodulation reference signals (DM RS).

Abstract: A method of transmitting a signal of a base station in a wireless communication system is provided. The method includes transmitting a first signal to the relay station through the transmission period in a subframe including a transmission period and a guard time for transmission/reception switching of a relay station, and transmitting a second signal to a macro user equipment through the guard time. Accordingly, a signal can be effectively transmitted in the wireless communication system employing the relay station.

Abstract: A method is provided for receiving a downlink signal at a downlink reception entity in a wireless communication system. Downlink control information is received by demodulating a Physical Downlink Control Channel (PDCCH) in a first resource block (RB) pair within an RB bundle by using a first Demodulation Reference Signal (DMRS). Downlink data is received by demodulating a Physical Downlink Shared Channel (PDSCH) in one or more second RB pairs scheduled by the downlink control information within the RB bundle by using a second DMRS based on an assumption that a same precoder is applied to the scheduled one or more second RB pairs.

Abstract: A method for performing HARQ includes: receiving information to determine downlink subframes used for a relay station to receive scheduling information from a BS; determining uplink subframes for performing a HARQ with the DL subframes, each of the UL subframes corresponding to each of the DL subframes; assigning sequentially each of a plurality of HARQ processes to each of the UL subframes one by one; and performing HARQ with the BS at at least one of the HARQ processes. An n-th subframe is configured for a corresponding UL subframe if an (n?4)-th subframe is configured for one of the DL subframes, n denoting an integer. The HARQ processes are equal in number to the UL subframes. The DL subframes are configured in at least one radio frame having 10 subframes indexed from 0 to 9. Subframes having indexes 0, 4, 5 and 9 are not configured as a DL subframe.

Abstract: The present invention provides a method for avoiding interference resulting from data transmission between an adjacent second base station and a second relay station placed within the coverage of the adjacent second base station.

Abstract: A method and apparatus of transmitting backhaul signals performed by a relay station in a wireless communication system is provided. A relay station performs scheduling with a base station in order to transmit the backhaul signals, and transmitting the backhaul signals to the base station using both resources for downlink transmission and resources for uplink transmission based on the scheduling.