摘要:
A method and apparatus for transmitting effective channel status information (CSI) in a wireless communication system supporting multiple carriers are disclosed. The method for indicating CSI transmission in a wireless communication system supporting multiple carriers includes transmitting downlink control information (DCI) including a channel quality information (CQI) request field to a user equipment (UE) over a physical downlink control channel (PDCCH), and receiving CSI reporting of a single downlink carrier or multiple downlink carriers from the UE over a physical uplink shared channel (PUSCH) without receiving uplink data. If the CSI for the single downlink carrier is reported, the number (NPRB) of resource blocks (RBs) established for the CSI reporting is identical to or less than X (NPRB≦X), and if the CSI for the multiple downlink carriers is reported, NPRB is identical to or less than M (where M>X).
摘要:
The present application relates to a method in which a terminal performs channel interleaving in a multi-antenna wireless communication system. More particularly, the method comprises the following steps: constructing both channel quality indicator (CQI) information and coded data information into preset bit-wide vectors to generate a first interleaver input vector sequence; repeating both rank indicator (RI) information and acknowledgement/negative acknowledgement (ACK/NACK) information per the number (NL) of transmission layers to generate a second interleaver input vector sequence of preset bit-wide vectors and a third interleaver input vector sequence of preset bit-wide vectors; mapping the first interleaver input vector sequence, the second interleaver input vector sequence, and the third interleaver input vector sequence to an interleaver matrix, respectively; and reading the interleaver matrix by a column basis to generate an output vector sequence. The preset bit-wide is defined by the product of a modulation order (Qpm) and the number (NL) of transmission layers.
摘要:
A method for transmitting information data by using a Reed-Muller coding scheme in a wireless communication system is disclosed. The method includes the steps of dividing the information data to first information data and second information data if a bit size O of the information data is equal to or larger than a predetermined number; applying RM coding on each of the first information data and the second information data; concatenating the coded first information data and the coded second information data, and transmitting the concatenated data.
摘要:
The present invention relates to a wireless communication system, and more specifically, to an ACK/NACK (Acknowledgement/Negative ACK) transmission method in a wireless communication system and an apparatus therefor. The ACK/NACK transmission method preformed by user equipment in a wireless communication system comprises: receiving a PDCCH (Physical Downlink Control Channel); receiving a PDSCH (Physical Downlink Shared Channel) indicated by the PDCCH; and transmitting an ACK/NACK for the PDSCH. According to the ACK/NACK transmission method and apparatus of the invention.
摘要:
A base station of the present invention configures resources in which a downlink signal is to be transmitted with zero power using resource sets defined for a specific number of antenna ports, regardless of the number of antenna ports actually configured in the base station, and transmits resource information indicating the configured resources to a user equipment. The user equipment of the present invention receives a downlink transmission from the base station, assuming that transmission power of resources corresponding to a resource set indicated by the resource information is zero.
摘要:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide.
摘要:
The present invention relates to a method for transmitting a signal from a transmitter to a receiver through N number of transmitting antennas (where N≧2), comprising: selecting a first and a second matrix from a first and a second codebook related to a first and a second precoding matrix indicator (PMI), respectively, and determining a precoding matrix on the basis of the first and second matrix; performing precoding by using the determined precoding matrix for L number of layers (where 1≦L≦N) to which a signal to be transmitted to the receiver is mapped; and transmitting the precoded signal to the receiver through the N number of transmitting antennas. Here, the first codebook includes one or more diagonal matrices having an N×N size, non-zero elements in the diagonal matrix has a predetermined phase value, and the second codebook includes one or more matrices having an N×L size.
摘要:
The present invention relates to a wireless communication system, and more specifically, to a method and a device for transmitting and receiving uplink control information in a wireless communication system that supports multiple carriers. According to one embodiment of the present invention, a method for allowing a terminal to transmit uplink control information (UCI) in a wireless communication system that supports multiple carriers comprises the steps of: receiving one or more uplink grants from a base station; obtaining an indicator which indicates an uplink carrier on which said UCI is transmitted from each of the one or more uplink grants; and transmitting said UCI through a physical uplink shared channel (PUSCH) on the uplink carrier indicated by said indicator, if the one or more uplink grants schedule uplink data transmission on the uplink carrier indicated by said indicator.
摘要:
The present invention relates to a wireless communication system, and more particularly, discloses a method and a device for transmitting/receiving channel state information in a wireless communication system supporting multicarriers. The method for transmitting downlink channel state information in the wireless communication system supporting downlink multicarriers, according to one embodiment of the present invention, comprises the following steps: receiving from at least one downlink carrier an uplink grant downlink control information (DCI) including a request for the channel state information; measuring the channel state information of at least one first type downlink carrier; and transmitting the measured channel state information on a physical uplink shared channel (PUSCH) resource indicated by the uplink grant DCI, wherein the downlink multicarriers comprise the first type downlink carrier and a second type downlink carrier, wherein the channel state information on the second type downlink carrier may not be transmitted.
摘要:
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. According to one embodiment of the present invention, a method for transmitting channel status information, CSI, for a downlink transmission through uplink comprises: generating a rank indicator (RI), a first precoding matrix indicator (PMI), a second PMI anc channel quality indicator (CQI) as the CSI for the downlink transmission; and transmitting at least one of the RI, the first PMI, the second PMI and the CQI according to a predetermined order, wherein, when the RI or the first PMI is dropped, the CSI following the dropped CSI is generated based on a RI or a first PMI transmitted previously, wherein a precoding matrix used for the downlink transmission is determined based on a combination of the first PMI and the second PMI.