Lg Electronics Inc.

Qualcomm Incorporated

Bin Chui Ihm

Su Nam Kim

Jin Young Chun

Sung Ho Park

Wook Bong Lee

Ji Won Kang

Dong Guk Lim

Jae Wan Kim

A method is provided for transmitting aperiodic channel state information (CSI). A base station (BS) transmits, to a user equipment (UE), receiving a downlink control information (DCI) which includes a CSI request field; and performing aperiodic CSI reporting using a Physical Uplink Shared Channel (PUSCH) when a value of the CSI request field triggers an aperiodic CSI report. In addition, when the CSI request field is a multi-bit field, the CSI request field has a value among a first value which triggers an aperiodic CSI report for a first reference signal and a second value which triggers an aperiodic CSI report for a second reference signal. Furthermore, a resource of the first reference signal and a resource of the second reference signal are configured by a higher layer signal.

Method and apparatus for transmitting aperiodic channel state information in wireless communication system

A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

Method for reducing inter-cell interference

Growing community of inventors

Anyang-si, South Korea

Bin Chui Ihm