CN102308490A

5G,4G

Title

Method for transmitting common reference signal in downlink mimo system

Application Number:

CN2010807238

Publication Date:

04-01-2012

Current Assignee:

LG

Family ID:

Application Date:

09-02-2010

Declaring Company:

LG

Publication Country:

US

Priority Date:

09-02-2009

Title

Method for transmitting common reference signal in downlink mimo system

Application Number:

CN2010807238

Family ID:

Publication Country:

US

Publication Date:

04-01-2012

Application Date:

09-02-2010

Priority Date:

09-02-2009

Current Assignee:

LG

Declaring Company:

LG

Abstract  Abstract

The present invention relates to a method for transmitting a reference signal (RS) for measuring a channel in a downlink MIMO (Multi Input Multi Output) system that supports: a first user device supporting N base station transmission antennas out of a total of M base station transmission antennas and a second user device supporting M (M>N) base station transmission antennas. The method comprises the steps of: grouping a certain number of subframes or a resource block (RB) to transmit a common reference signal (CRS) for M transmission antennas from the base station; and transmitting the subframes or the resource block to the second user device. The grouped subframes or the resource block are transmitted to the second user terminal in a specific time period and in the subframes or the resource block the common reference signal is mapped to different transmission antenna ports corresponding to a quotient which is obtained by dividing M by a specific number.

The invention relates to a method for in a downlink MIMO (Multiple Input Multiple Output) system sending method of reference signal (RS) for measuring channels which supports the second user equipment supports the M base station transmitting N of antenna of base station emitting antenna of the first user equipment and the support M (M is more than N) base station emitting antenna. the method comprises the following steps: grouping certain number of subframes or resource blocks (RBs) transmitted from a base station for M emitting antennas of the common reference signal (CRS) and the sub-frame or the resource block to the second user equipment. subframe or resource block of the packet sent to the second user terminal in a specific time period and in the subframe or resource block common reference signals are mapped to the M divided corresponding to different emitting antenna port of a specific digital obtained quotient.

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.