METHOD AND APPARATUS FOR TRANSMITTING INFORMATION FOR REPORTING IN WIRELESS COMMUNICATION SYSTEM

• US 20150043368A1
• Filed: 03/05/2013
• Published: 02/12/2015
• Est. Priority Date: 03/08/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Kijun, Seo, Hanbyul, Kim, Byounghoon
• Granted Patent: US 9,801,087 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04B 17/00 Monitoring; Testing of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04B 17/327 Received signal code power [RSCP]
• CPC Class Codes: H04B 17/382 for resource allocation, admission control or handover
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels

Abstract

One embodiment of the present invention relates to a method for a serving cell transmitting information for reporting a terminal measurement and/or reporting channel state information in a wireless communication system, and more specifically, to a method for transmitting information comprising a step of transmitting information to the terminal the measurement report and/or the channel state information report, wherein the information includes a plurality of channel state information-reference signal (CSI-RS) settings, wherein each of the plurality of CSI-RS settings includes information related to a bandwidth from which the CSI-RS is transmitted according to the relevant CSI-RS setting.

Claims

1. A method for transmitting information for at least one of measurement reporting and channel state information reporting of a user equipment (UE) by a serving cell in a wireless communication system, the method comprising:

transmitting the information for at least one of measurement reporting and channel state information reporting to the UE,

wherein the information comprises a plurality of channel state information-reference signal (CSI-RS) configurations,

wherein each of the CSI-RS configurations comprises information related to a bandwidth for transmission of a CSI-RS corresponding to each of the CSI-RS configurations.

2. The method according to claim 1, wherein the information related to the bandwidth comprises the number of resource blocks.

3. The method according to claim 1, wherein the bandwidth for transmission of the CSI-RS is identical to a bandwidth used by a cell associated with the CSI-RS.

4. The method according to claim 1, wherein the plurality of CSI-RS configurations is for designation of at least one of a coordinated multi point (CoMP) management set and a CoMP measurement set.

5. The method according to claim 1, wherein, when the serving cell transmits a zero power CSI-RS for a neighbor cell, the zero power CSI-RS is transmitted in a bandwidth corresponding to a bandwidth for transmission of a CSI-RS of the neighbor cell.

6. The method according to claim 5, wherein the serving cell considers a zero power CSI-RS configuration only when data mapping is performed in a bandwidth corresponding to the bandwidth for transmission of the CSI-RS of the neighbor cell.

7. A method for reporting channel state information to a serving cell by a user equipment (UE) in a wireless communication system, the method comprising:

receiving information for channel state information reporting from the serving cell;

determining a sub-band based on the information for channel state information reporting; and

reporting the channel state information based on the sub-band,

wherein the information for channel state information reporting comprises a plurality of channel state information-reference signal (CSI-RS) configurations,

wherein each of the CSI-RS configurations comprises information related to a bandwidth for transmission of a CSI-RS corresponding to each of the CSI-RS configurations.

8. The method according to claim 7, wherein the determining comprises:

determining a sub-band based on a virtual bandwidth; and

applying the sub-band determined based on the virtual bandwidth to a bandwidth related to at least one CSI-RS to report the channel state information.

9. The method according to claim 8, wherein, when there are two or more CSI-RS configurations to report the channel state information, the UE reports sub-bands corresponding to each other in bandwidths corresponding to the two or more CSI-RS configurations.

10. The method according to claim 9, wherein the virtual bandwidth is a largest bandwidth in information related to a plurality of bandwidths corresponding to the plurality of CSI-RS configurations.

11. The method according to claim 7, wherein the information related to the bandwidth comprises the number of resource blocks.

12. The method according to claim 7, wherein the bandwidth for transmission of the CSI-RS is identical to a bandwidth used by a cell associated with the CSI-RS.

13. The method according to claim 7, wherein the plurality of CSI-RS configurations is for designation of at least one of a coordinated multi point (CoMP) management set and a CoMP measurement set.

14. A base station in a wireless communication system comprising:

a transmit module; and

a processor,

wherein the processor transmits information for at least one of measurement reporting and channel state information reporting to the UE,

wherein the information comprises a plurality of channel state information reference signal (CSI-RS) configurations,

wherein each of the CSI-RS configurations comprises information related to a bandwidth for transmission of a CSI-RS corresponding to each of the CSI-RS configurations.

15. A user equipment (UE) in a wireless communication system comprising

a receive module;

and

a processor,

wherein the processor receives information for channel state information reporting from the serving cell, determines a sub-band based on the information for channel state information reporting, and reporting the channel state information based on the sub-band,

wherein the information for channel state information reporting comprises a plurality of channel state information-reference signal (CSI-RS) configurations,

wherein each of the CSI-RS configurations comprises information related to a bandwidth for transmission of a CSI-RS corresponding to each of the CSI-RS configurations.