摘要:
The present invention relates to a wireless communication system, and discloses a method and apparatus for transmitting/receiving a signal in a wireless communication system that supports multi-user MIMO transmission. According to one embodiment of the present invention, a method in which a mobile station receives a signal in a wireless communication system that supports multi-user MIMO transmission, comprises: a step of receiving information on the entirety of the transmission rank of the multi-user MIMO transmission; a step of receiving a reference signal and data for demodulation for the mobile station on the basis of the information on the entirety of the transmission rank; a step of acquiring channel information on the mobile station from the reference signal for demodulation; and a step of demodulating said data on the basis of the acquired channel information.
摘要:
The present invention relates to a wireless communication system, and an adaptive multiple antenna transmission method and apparatus in accordance with antenna transmission power are disclosed. A method of performing multiple antenna transmission from a terminal to a base station according to one embodiment of the present invention may include the steps of: determining a reference value for a transmission power of each of a plurality of transmit antennas of the terminal; grouping the plurality of transmit antennas into a first group of transmit antennas and a second group of transmit antennas in accordance with the determined reference value; and transmitting a signal to the base station through at least one of the first group of the transmit antennas and the second group of transmit antennas.
摘要:
The present invention relates to transmitting a downlink reference signal in a wireless communication system. A method for a base station to transmit a downlink signal by using two or more layers includes multiplexing and transmitting a reference signal for the two or more layers on the basis of a reference signal pattern on a data region of a downlink subframe and transmitting data for the two or more layers on the data region of the downlink subframe, wherein the reference signal for the two or more layers is a dedicated reference signal that is used to demodulate the data for the two or more layers on a receiving end, and in the multiplexing of the reference signal, the reference signal for the two or more layers is code-division-multiplexed by an orthogonal code having a length of at least 2.
摘要:
An uplink power control method and apparatus in a wireless communication system are provided. The uplink power control method in a terminal of a wireless communication system includes mapping one or more codewords to one or more layers, and multiplying the codewords mapped to the layers by a layer power control matrix so as to perform layer power control.
摘要:
A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups.
摘要:
A method and an apparatus for transmitting a reference signal in a wireless communication system are provided. The method includes generating a first sequence and a second sequence, mapping the first sequence to reference symbols in a resource block, mapping the second sequence to the same reference symbols in the resource block, and transmitting a first reference signal (RS) based on the first sequence through a first antenna, and a second RS based on the second sequence through a second antenna.
摘要:
A method for performing a Coordinated Multi-Point (CoMP) operation and transmitting feedback information in a wireless communication system is disclosed. The method includes measuring interference levels or noise and interference variances of reference signals received from one or more neighbor cells, and transmitting to a serving Base Station (BS) information about the measured interference levels or noise and interference variances, and information about a Precoding Matrix Index (PMI) that a mobile station (MS) wants to restrict or recommend for a neighbor cell performing the CoMP operation.
摘要:
A method for transmitting a reference signal, a method for establishing a reference-signal transmission pattern, and a method for establishing a block are disclosed. The reference-signal density is adjusted according to the request degree of the channel estimation performance, and then the reference signal is transmitted to a destination. As a result, the apparatus prevents prevent resources from being unnecessarily wasted, and acquires a high channel estimation performance as necessary, resulting in an increased production yield of a system.
摘要:
A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups.
摘要:
An apparatus for transmitting and receiving data in a wireless communication system. In a terminal of a wireless communication system, the present invention includes receiving a physical downlink control channel (PDCCH), receiving a physical downlink shared channel (PDSCH), and demodulating the PDSCH by interpreting the PDCCH according to a type of a subframe including the PDCCH and the PDSCH.