CN102474494B

5G,4G

Title

Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas

Application Number:

CN2010836109

Publication Date:

06-08-2014

Current Assignee:

LG

Family ID:

43775745

Application Date:

13-08-2010

Declaring Company:

LG

Publication Country:

US

Priority Date:

14-08-2009

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Title

Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas

Application Number:

CN2010836109

Family ID:

43775745

Publication Country:

US

Publication Date:

06-08-2014

Application Date:

13-08-2010

Priority Date:

14-08-2009

Current Assignee:

LG

Declaring Company:

LG

View on Espacenet goto-link

Abstract  Abstract

The invention claims a wireless communication system and particularly to a wireless communication system supporting multiple antenna transmission method and device of downlink reference signal. A method for channel state information reference signal of at most eight antenna ports according to one embodiment transmission of the invention comprises: in a base station according to the predetermined pattern; be used for channel state information reference signal mapping of at most eight antenna ports to a data region of a downlink subframe for normal cyclic prefix (CP) configuration; and in the base station transmitting reference signal for channel state at most eight antenna ports are mapped to a downlink subframe wherein the preset pattern defined for a channel state information reference signal of up to eight antenna ports are mapped to two OFDM symbols of the data region of the downlink subframe. then mapping to at least one four sub-carrier position of each OFDM symbol two OFDM symbols and wherein the four subcarrier locations defined by the predetermined pattern can be two consecutive sub-carrier position and separated from the two other continuous sub-carrier positions of 4 sub-carriers.

The present invention relates to a wireless communication system and in particular to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a channel status information reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station mapping the channel status information reference signal for a maximum of eight antenna ports onto a data region of a downlink subframe having a general cyclic prefix (CP) configuration according to a preset pattern; and in the base station transmitting the downlink subframe into which the channel status reference signal for the maximum of eight antenna ports has been mapped wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe and then mapped to at least one of four subcarrier positions in each of the two OFDM symbols and wherein the four subcarrier positions defined by the preset pattern may be two consecutive subcarrier positions and two other consecutive subcarrier positions spaced apart by four subcarriers.

The present invention relates to a wireless communication system and in particular to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a channel status information reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station mapping the channel status information reference signal for a maximum of eight antenna ports onto a data region of a downlink subframe having a general cyclic prefix (CP) configuration according to a preset pattern; and in the base station transmitting the downlink subframe into which the channel status reference signal for the maximum of eight antenna ports has been mapped wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe and then mapped to at least one of four subcarrier positions in each of the two OFDM symbols and wherein the four subcarrier positions defined by the preset pattern may be two consecutive subcarrier positions and two other consecutive subcarrier positions spaced apart by four subcarriers.

Note:

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