摘要:
The present description relates to a method for transmitting data from a base station according to one embodiment of the present invention comprises: a step for transmitting to the relay node a signal having a first data to be delivered to a user equipment via the relay node; a step for transmitting to the user equipment a signal having a second data; and a step for receiving from the user equipment a HARQ confirmation response information regarding the first data delivered to the user equipment through the relay node, wherein the first data is retransmitted to the user equipment from the relay node when the HARQ confirmation response information is NACK, and scheduling information for transmitting the first data from the relay node to the user equipment and scheduling information for retransmitting the first data can be designated in advance by the base station.
摘要:
A method for transmitting a downlink signal through coordinated beamforming with a neighboring cell at a serving cell includes transmitting first subframe information for designating one or more subframes to the neighboring cell, transmitting first Precoding Matrix Index (PMI) restriction related information including one or more PMIs to a User Equipment (UE) of the serving cell, the PMIs forming a beam so that interference affecting the neighboring cell in the one or more subframes has a constant characteristic, receiving first Channel State Information (CSI) reporting measured in the one or more subframes based on the first PMI restriction related information from the UE of the serving cell, and transmitting a downlink signal to the UE of the serving cell based on the first CSI reporting, the neighboring cell receiving CSI reporting corresponding to the neighboring cell, measured by the UE of the neighboring cell in the one or more subframes.
摘要:
The present invention relates to a method for a terminal to execute a random access in a mobile communication system, and comprises the steps of: transmitting a random access preamble using a resource determined according to a random access setting for the terminal; and receiving a random access response including uplink approval information from a base station as a response to the preamble transmission, wherein the random access setting is determined by a group corresponding to the terminal from a first random access setting for a first terminal group or a second random access setting for a second terminal group, and a resource reserved for the second terminal group according to the second random access setting is used for transmission of the random access preamble or transmission of uplink data.
摘要:
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a control channel in a wireless communication system that supports multi-cell cooperative communication. According to the present invention, a scheme for protecting a control channel and a data channel of one cell from interference caused by another cell is provided.
摘要:
The present description relates to a method of using a terminal to adaptively feed back channel information relating to multi-cell cooperative communication includes: measuring an average signal-to-noise ratio of a virtual multi-antenna channel between a terminal and at least one cell to transmit same to a base station; receiving, from a base station, a number of allowable feedback bits determined on the basis of the average signal-to-noise ratio and cooperative communication information; selecting a codebook from a plurality of predetermined codebooks on the basis of the number of allowable feedback bits and the cooperative communication information; and quantizing channel information on a virtual multi-antenna channel using the selected codebook, and transmitting feedback information including the quantized channel information to a base station. The codebook may be selected to transmit the feedback information using the entire number of allowable feedback bits.
摘要:
Disclosed is a method whereby a relay node receives a signal from a base station in a wireless communication system. More specifically, the invention comprises: a step in which a relay node receives, from the base station, a request signal for changing the size of a downlink physical control channel transmitted to a terminal corresponding to the relay node; a step in which a signal in response to the request signal is sent to the base station; a step of setting a downlink available symbol between the base station and the relay node, based on the request signal; and a step in which a relay node specific signal, sent from the base station, is received from the downlink available symbol.
摘要:
The present invention relates to a method of a repeater receiving the downlink control information through an R-PDCCH from a base station according to one embodiment of the present invention comprises the steps of: determining a candidate location on which an R-PDCCH is transmitted at first and second slots of a downlink sub-frame; monitoring whether the R-PDCCH is transmitted on the determined candidate location; and receiving the downlink control information included in the R-PDCCH when the transmission of the R-PDCCH is monitored, wherein the R-PDCCH candidate location is set as a VRB set including VRBs of N number and a candidate location of one R-PDCCH for a high combination level can be composed of a combination of two adjacent candidate locations of the R-PDCCH candidate locations for a low combination level.
摘要:
The present invention relates to a method for reporting the link quality of a downlink by a terminal. Specifically, the method includes the steps of: receiving, from a serving cell, a subframe set for resource-limited measurement and information regarding a cell-specific reference signal of an interference cell; measuring link quality of a downlink in the subframe set; and reporting the measured link quality of the downlink to the serving cell, wherein interference control processing due to the cell-specific reference signal from the interference cell is applied to the subframe set using the information regarding the cell-specific reference signal of the interference cell.
摘要:
The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting a control channel in a wireless communication system that supports multi-cell cooperative communication. According to the present invention, a scheme for protecting a control channel and a data channel of one cell from interference caused by another cell is provided.
摘要:
Specifically, according to one embodiment of the present invention, a method for operating a base station that assigns frequency resources to terminals in a wireless communication system is provided. The method comprises the steps of calculating a first metric using information relating to the transmission rate of each terminal; calculating a second metric using information relating to a proportion of a group to which each of the terminals belongs; determining a terminal to which a frequency resource is assigned on the basis of the calculated first and second metrics; assigning the resource to the determined terminal; and updating the information relating to the transmission rate for each terminal and the information relating to proportion of a group.