CN102474494A

5G,4G

Title

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

Application Number:

CN2010836109

Publication Date:

23-05-2012

Current Assignee:

LG

Family ID:

Application Date:

13-08-2010

Declaring Company:

LG

Publication Country:

US

Priority Date:

14-08-2009

Title

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

Application Number:

CN2010836109

Family ID:

Publication Country:

US

Publication Date:

23-05-2012

Application Date:

13-08-2010

Priority Date:

14-08-2009

Current Assignee:

LG

Declaring Company:

LG

Abstract  Abstract

The invention claims a wireless communication system and specifically relates to a method for supporting wireless communication system of the multi-antenna transmission downlink reference signal and a device thereof. A method for a base station to transmit a channel-state-information reference signal for up to 8 antenna ports includes mapping in accordance with a predetermined pattern the channel-state-information reference signal for up to 8 antenna ports onto a data region of a downlink subframe having an extended cyclic prefix (CP) structure and transmitting the downlink subframe onto which the channel-state-information reference signal for up to 8 antenna ports has been mapped; and in the predetermined pattern the channel-state-information reference signal for up to 8 antenna ports in mapped onto 2 OFDM symbols on the data region of the downlink subframe with a definition for mapping onto at least one of 4 subcarrier wave positions in each of the 2 OFDM symbols and the 4 subcarrier wave positions defined in the predetermined pattern can be disposed at 3 subcarrier wave intervals.

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:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.