摘要:
A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.
摘要:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information in a wireless communication system and to an apparatus for the method, wherein the method comprises a step of receiving a plurality of scheduling information for transmission using a plurality of physical uplink shared channels (PUSCHs), and a step of transmitting uplink control information (UCI) through one PUSCH among the plurality of PUSCHs, if the transmission using the plurality of PUSCHs is present in the subframe which requires a UCI transmission. If a PUSCH transmission is present on a primary resource in the subframe, the UCI is transmitted through the PUSCH of the primary resource. If a PUSCH transmission is not present on the primary resource in the subframe, the UCI is transmitted through the PUSCH of the secondary resource having the smallest index among a plurality of secondary resources on which PUSCH transmissions are present.
摘要:
A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.
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, 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. 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 wireless communication system. In more detail, in relation to a method for a terminal to transmit ACK/NACK in a wireless communication system, an ACK/NACK transmission method includes: receiving at least one Physical Downlink Shared Channel (PDSCH); transmitting at least one ACK/NACK corresponding to the at least one PDSCH through a plurality of Physical Uplink Control Channel (PUCCH) formats; and, when the at least one ACK/NACK is transmitted using a first PUCCH format, transmitting at least one ACK/NACK in an antenna port transmission mode set for a second PUCCH format.
摘要:
The present invention relates to an uplink power control method and user equipment, which involve determining a power correction factor by considering the number of antenna ports. According to the present invention, even when a base station transmits the same power control information to the user equipment, the user equipment maps the power control information to another power correction factor and determines an uplink transmission power depending on an uplink transmission condition. Thus, uplink power control can be performed in a more efficient manner.
摘要:
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block.
摘要:
A method of coding and transmitting channel quality control information through a physical uplink control channel (PUCCH) is disclosed. The method of transmitting channel state control information (CQI and/or PMI) in a wireless access system includes performing channel coding with respect to the channel state control information according to a payload size of the channel state control information, performing rate matching with respect to the channel state control information coded through channel coding according to physical uplink control channel (PUCCH) format 3, and transmitting the channel state control information using the PUCCH format 3.