摘要:
The present invention relates to an apparatus and a method for transmitting/receiving signals by using a preset frame structure in a wireless communication system. As there are difficulties ensuring the link capacity and quality for a high speed moving object with the existing frame structure and the antenna arrangement and communication system based on the existing scheme, a new frame structure needs to be proposed. According to one example of those newly proposed frame structures, one frame is composed of 8 subframes, each of the 8 subframes being composed of orthogonal frequency division multiple access (OFDMA) symbols in a range of 11 to 14, and the cyclic prefix (CP) length of the frame is 1/8 or less of an effective symbol length (e.g., 1/8, 1/16, 1/31, 1/64).
摘要:
Disclosed is a method for minimizing feedback overhead in a multi-input multi-output (MIMO) communication method using multiple transmission and reception antennas. In particular, a method for minimizing feedback overhead in a multi-input multi-output (MIMO) communication system by using spatial channel covariance, as explicit channel status information (CSI) feedback method is disclosed.
摘要:
Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length.
摘要:
A method for designing an optimized codebook in a multi-input multi-output communication method using various codebooks is disclosed. In particular, an optimized codebook with respect to eight transmission antennas is devised, and a method for effectively transmitting data by using the optimized codebook is disclosed.
摘要:
Disclosed is a method for minimizing feedback overhead in a multi-input multi-output (MIMO) communication method using multiple transmission and reception antennas. In particular, a method for minimizing feedback overhead in a multi-input multi-output (MIMO) communication system by using spatial channel covariance, as explicit channel status information (CSI) feedback method is disclosed.
摘要:
A method for designing an optimized codebook in a multi-input multi-output communication method using various codebooks is disclosed. In particular, an optimized codebook with respect to eight transmission antennas is devised, and a method for effectively transmitting data by using the optimized codebook is disclosed.
摘要:
Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length.
摘要:
The present invention relates to an apparatus and a method for transmitting/receiving signals by using a preset frame structure in a wireless communication system. As there are difficulties ensuring the link capacity and quality for a high speed moving object with the existing frame structure and the antenna arrangement and communication system based on the existing scheme, a new frame structure needs to be proposed. According to one example of those newly proposed frame structures, one frame is composed of 8 subframes, each of the 8 subframes being composed of orthogonal frequency division multiple access (OFDMA) symbols in a range of 11 to 14, and the cyclic prefix (CP) length of the frame is ⅛ or less of an effective symbol length (e.g., ⅛, 1/16, 1/31, 1/64).
摘要:
The present invention relates to a method for transmitting a terminal-specific reference signal for a control signal by a base station in a wireless communication system. Specifically, the method is characterized in that it comprises: transmitting a plurality of control channels and a first terminal-specific reference signal for the plurality of control channels to a first resource region; and transmitting one control channel and a second terminal-specific reference signal for the control channel to a second resource region, wherein the different descrambling identifiers are applied to the first and second terminal-specific reference signals.
摘要:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for reporting channel state information (CSI), wherein the method in which a terminal reports CSI comprises the steps of: receiving configuration information for periodic CSI reporting from a base station; and transmitting CSI information for each of a plurality of sets of CSI reports based on said configuration information to said base station via a physical uplink control channel (PUCCH). Said plurality of sets of CSI reports contains one or more mutually different subframes.