Abstract
The present invention provides a downlink MIMO (Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Input Multiple Output (MIMO)) system supporting a first user equipment supporting N base station transmit antennas and a second user equipment supporting M (RS) for channel measurement in a multi-output system. The method includes grouping a predetermined number of subframes or resource blocks (RBs) to transmit a common reference signal (CRS) for the M transmit antennas at a base station; And transmitting the predetermined number of subframes or resource blocks to the second user equipment, wherein a predetermined number of subframes or resource blocks determined as the group are transmitted to the second user equipment at a specific period, A common reference signal corresponding to a different transmission antenna port corresponding to a value obtained by dividing the M by the predetermined number is mapped to each of the number of subframes or resource blocks.
CRS, DRS, grouping
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 03/08/2011 | ISLD-201107-003 | LG | Yes | Basis Patent | ||||
| Not Available | 16/09/2012 | ISLD-201209-004 | LG | No | Family Member | ||||
| Not Available | 22/10/2012 | ISLD-201209-014 | LG | Yes | Basis Patent | ||||
| 4G | 30/09/2014 | ISLD-201410-002 | LG | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
Family Information
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| EP2395677B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
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