METHOD FOR TRANSMITTING AND RECEIVING DATA IN A COOPERATIVE MULTIPLE-INPUT MULTIPLE-OUTPUT MOBILE COMMUNICATION SYSTEM

• US 20110038436A1
• Filed: 05/07/2009
• Published: 02/17/2011
• Est. Priority Date: 05/07/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lim, Dong Guk, Koo, Ja Ho, Kim, Su Nam, Kim, Jae Wan, Ihm, Bin Chul
• Granted Patent: US 8,731,480 B2
• Time in Patent Office: Days
• US Class Current: 375/260
• 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 7/0621 Feedback content
• 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

Abstract

A method for transmitting and receiving data in a cooperative Multiple-Input Multiple-Output (MIMO) mobile communication system is disclosed. The method includes selecting a transmission path for transmitting precoding-related feedback control information to one or more cooperative base stations operating in the cooperative MIMO mode, and transmitting the precoding-related feedback control information to the one or more cooperative base stations through the selected transmission path.

Claims

1. A method for transmitting feedback control information in a mobile station in a wireless communication system using a cooperative Multiple-Input Multiple-Output (MIMO) mode, the method comprising:

selecting a transmission path for transmitting precoding-related feedback control information to one or more cooperative base stations operating in the cooperative MIMO mode; and

transmitting the precoding-related feedback control information to the one or more cooperative base stations through the selected transmission path.

2. The method according to claim 1, wherein the precoding-related feedback control information includes at least one of cell Identifiers (IDs), allowed frequency bands, modulation schemes, coding schemes, precoding codebook matrix index information, and restricted precoding codebook matrix index information of the one or more cooperative base stations.

3. The method according to claim 1, wherein the transmission path is at least one of a path running from the mobile station to the one or more cooperative base stations through a serving base station over a backbone, a direct path running from the mobile station to the one or more cooperative base stations, and a path running from the mobile station to the one or more cooperative base stations through a relay station.

4. The method according to claim 3, wherein the precoding-related feedback control information is transmitted through a feedback channel managed by the one or more cooperative base stations when the transmission path is the direct path running from the mobile station to the one or more cooperative base stations.

5. The method according to claim 4, wherein the feedback channel is a fast feedback dedicated channel.

6. The method according to claim 4, wherein the transmission path is selected according to at least one of delay-sensitiveness of the precoding-related feedback control information, the presence or absence of a relay station, and whether the one or more cooperative base stations allocate a feedback channel to the mobile station.

7. The method according to claim 1, further comprising receiving data from the one or more cooperative base stations, to effect at least one of spatial diversity and spatial multiplexing.

12. The method according to claim 5, wherein the transmission path is selected according to at least one of delay-sensitiveness of the precoding-related feedback control information, the presence or absence of a relay station, and whether the one or more cooperative base stations allocate a feedback channel to the mobile station.

8. A method for receiving feedback control information in a cooperative base station in a wireless communication system using a cooperative Multiple-Input Multiple-Output (MIMO) mode, the method comprising:

receiving precoding-related feedback control information from one or more mobile stations through a transmission path; and

receiving a cooperative MIMO mode request message from the one or more mobile stations.

9. The method according to claim 8, wherein the precoding-related feedback control information includes at least one of a cell Identifier (ID), an allowed frequency band, a modulation scheme, a coding scheme, precoding codebook matrix index information, and restricted precoding codebook matrix index information of the cooperative base station.

10. The method according to claim 8, wherein the transmission path is at least one of a path running from the one or more mobile stations to the cooperative base station through a serving base station over a backbone, a direct path running from the one or more mobile stations to the cooperative base station, and a path running from the one or more mobile stations to the cooperative base station through a relay station.

11. The method according to claim 10, wherein, the precoding-related feedback control information is transmitted through a feedback channel managed by the cooperative base station when the transmission path is the direct path running from the one or more mobile stations to the cooperative base station.