Lg Electronics Inc.

Binchul Ihm

Sunam Kim

Sungho Park

Jinyoung Chun

Jiwon Kang

Kitae Kim

Hyunsoo Ko

Jaehoon Chung

Wookbong Lee

Jinmin Kim

Hyukmin Son

Moonil Lee

Seunghyun Kang

Jaho Koo

Seunghee Han

Changhwan Park

Jin Young Chun

Dongcheol Kim

Ki Tae Kim

Sung Ho Park

Su Nam Kim

Ji Won Kang

Minseok Noh

In a wireless communication system, when a terminal receives control information from a downlink subframe, which is divided into a Physical Downlink Control Channel (PDCCH) region and a Physical Downlink Shared Channel (PDSCH) region, in a wireless communication system, the receiving of the control information includes: receiving, from a base station, first CFI information indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for Physical Downlink Control Channel (PDCCH) transmission; receiving, from the base station, second CFI information indicating start OFDM symbol information available for Physical Downlink Shared Channel (PDSCH) transmission corresponding to an enhanced Physical Downlink Control Channel (E-PDCCH); and receiving the PDSCH from the base station on the basis of the first CFI information or the second CFI information. The PDCCH is placed in the PDCCH region of the downlink subframe, and the E-PDCCH is placed in the PDSCH region of the downlink subframe.

Method of allocating a resource in a wireless communication system and device for same

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.

Method and device for transmitting a terminal-specific reference signal for a control channel by a base station in a wireless communication system

Disclosed is a method for transmitting a downlink control channel by a base station in a wireless communication system. More particularly, the method comprises the following steps: setting a transmission resource for transmitting the downlink control channel in a data area of a subframe; mapping one or more first control channels for downlink acknowledgement(ACK)/negative-ACK(NACK) information to the transmission resource; and transmitting the mapped one or more first control channels, wherein the one or more first control channels are mapped to a location adjacent to a terminal specific reference signal existing in the transmission resource.

Method for transmitting downlink control channel by base station in wireless communication system, and device therefor

The present invention relates to wireless communication, and particularly, to a method and device for transmitting a feedback signal of a terminal in a multi-node system. The method for a terminal to transmit feedback information in a multi-node system including a plurality of nodes and a base station for controlling same includes: transmitting first information upon the request of resource allocation so as to give notice that there is information to be transmitted to the base station; receiving information from the base station at the request for the transmission of second information necessary for the resource allocation; and transmitting the requested second information to the base station. The feedback information may be transmitted to the base station together with the first information or the second information.

Method and device for transmitting a feedback signal in a multi-node system

The present invention relates to a method for a terminal receiving control information in a distributed multi-node system, and provides a method for receiving the control information comprising the steps of: receiving from a node information relating to a resource allocation method with regard to an enhanced-physical downlink control channel (E-PDCCH); and receiving from the node the control information through the E-PDCCH, based on the information relating to the resource allocation method which is received.

Method for transmitting/receiving control information and apparatus for transmitting/receiving

Provided is a method for mitigating inter-cell interference generated by the collision of UL transmissions and DL transmissions between adjacent cells in an asymmetric time division duplex (TDD) communication system. The present invention removes or reduces time-frequency resources for UL transmissions which collide with DL transmissions of an adjacent cell, and thus can mitigate inter-cell interference.

Uplink power control method, user equipment, and base station

A multiple distributed system is disclosed. An uplink control resource allocation method for a user equipment to transmit an Acknowledgement/Negative ACK (ACK/NACK) signal includes receiving one or more Enhanced-Physical Downlink Control Channels (E-PDCCHs), receiving one or more Physical Downlink Shared Channels (PDSCHs) corresponding to the one or more E-PDCCHs, and transmitting ACK/NACK signals for reception of the one or more PDSCHs through a Physical Uplink Control Channel (PUCCH), wherein Control Channel Element (CCE) indexes of the PUCCH transmitting the ACK/NACK signals are determined in consideration of first CCE indexes of the one or more E-PDCCHs and the number of CCEs of a PUCCH determined by a higher layer.

Method and apparatus for allocating resources in wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving a downlink control channel. According to one embodiment of the present invention, method in which a base station transmits downlink control information in a wireless communication system comprises: a step for determining an allocatable resource region for an enhanced physical downlink control channel (E-PDCCH) of a local allocation system; a step for allocating an E-PDCCH to the determined allocatable resource region for the E-PDCCH; and a step for transmitting the downlink control information on the allocated E-PDCCH. The allocatable resource region for the E-PDCCH can be set as a group of partial resource regions in each of a plurality of partitions when a downlink system bandwidth contains said plurality of partitions.

Method and apparatus for transceiving a downlink control channel in a wireless communication system

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.

Method for reporting channel state information in a wireless communication system, and apparatus therefor

The present invention relates to a wireless communication system, and more particularly, to a method and device for transmitting/receiving channel state information. A method of a terminal for transmitting channel state information (CSI) according to an embodiment of the present invention includes: Receiving setting information on a basic channel measurement target from a base station; receiving channel measurement target indication information from the base station; performing a channel measurement by using CSI-reference signal (CSI-RS) corresponding to the channel measurement target; and transmitting CSI to the base station.

Method and device for performing channel measurement by using CSI-reference signal corresponding to received channel measurement target

One embodiment of the present invention provides a method for determining a radio resource by a terminal. According to the method, information on a second cell can be received from a first cell, wherein a radio resource of the first cell includes a plurality of wireless frames along a time axis, each wireless frame includes a plurality of subframes, and the information on the second cell can include an ID of the second cell. In addition, a radio resource of the second cell can be determined by using the information on the second cell, wherein the radio resource of the second cell can be determined as a partial region in the wireless frames or the subframes of the first cell, which is indicated by the information on the second cell.

Method for more efficiently utilizing radio resources in a wireless communication system including a plurality of small cells

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving a downlink control channel. According to one embodiment of the present invention, a method in which a base station transmits a downlink control channel to a terminal in a wireless communication system comprises the steps of: transmitting one or more enhanced-physical downlink control channels (E-PDCCHs) within a resource region allocable for an E-PDCCH; and transmitting E-PDCCH allocation resource information for the one or more E-PDCCHs to the terminal. The E-PDCCH allocation resource information indicates the resource in which the one or more E-PDCCHs exist from among the resource region allocable to the E-PDCCH. An effective physical downlink shared channel (PDSCH) allocation resource region for the terminal can be determined on the basis of the E-PDCCH allocation resource information.

There are provided a method and apparatus in which user equipment transmits channel state information. The method includes reserving a plurality of configured Physical Uplink Control Channel (PUCCH) resources through which channel state information can be transmitted, receiving a plurality of reference signals, generating channel state information by measuring each of the plurality of reference signals, and transmitting the channel state information about each of the plurality of reference signals through the plurality of PUCCH resources.

Method and apparatus for transmitting channel state information in multi-node system

The present invention relates to a method in which a UE estimates a downlink data channel in a wireless communication system, and an apparatus for the same. Specifically, disclosed is a method in which a UE estimates a downlink data channel in a wireless communication system, the method including the steps of: receiving a downlink control channel using a UE-specific reference signal; bundling a resource block for a downlink data channel into one channel estimation unit when a space resource for the downlink control channel and a space resource for the downlink data channel which makes commands in the downlink control channel are the same as each other; and performing a channel estimation on the basis of the UE-specific reference signal with respect to the one channel estimation unit.

Growing community of inventors

Anyang-si, South Korea

Binchul Ihm