APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING FEEDBACK INFORMATION IN A WIRELESS COMMUNICATION SYSTEM USING BEAMFORMING

• US 20140098695A1
• Filed: 10/09/2013
• Published: 04/10/2014
• Est. Priority Date: 10/09/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Su-Ryong, Yu, Hyun-Kyu, Jeong, Cheol, Park, Jeong-Ho
• Granted Patent: US 9,516,525 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic

Abstract

An apparatus performs a method for generating information indicating channel quality when a dynamic range of a receive signal strength and an interference signal strength is considerable in a wireless communication system using beamforming. A base station (BS) for processing feedback information for scheduling receives from a mobile station (MS) first feedback information comprising a receive signal strength measurement result in paths selected from a plurality of downlink paths between the BSs and the MS, designates a transmit (TX) resource for interference measurement of the MS based on the first feedback information, receives from the MS second feedback information comprising an interference measurement result in the designated TX resource region, and calculates a Signal to Interference plus Noise Ratio (SINR) of the MS based on the first feedback information and the second feedback information. The designated TX resource includes a resource other than a signal TX resource for the MS.

Claims

1. A method of a first Base Station (BS) of BSs for processing feedback information for scheduling in a wireless communication system that uses beamforming and comprises the BSs and a Mobile Station (MS) in coordinated communication, the method comprising:

receiving from the MS first feedback information comprising a receive signal strength measurement result in paths selected from a plurality of downlink paths between the BSs and the MS;

designating a transmit (TX) resource for interference measurement of the MS based on the first feedback information;

receiving from the MS second feedback information comprising an interference measurement result in the designated TX resource region; and

calculating a Signal to Interference plus Noise Ratio (SINR) of the MS based on the first feedback information and the second feedback information,

wherein the designated TX resource comprises a resource other than a signal TX resource for the MS.

2. The method of claim 1, further comprising:

generating scheduling information based on the first feedback information and transmitting the generated scheduling information to the MS.

3. The method of claim 2, wherein the first feedback information comprises a BS IDentifier (ID), a TX beam ID, and a receive (RX) beam ID indicating RX beam use of the MS in the BS.

4. The method of claim 3, wherein the calculating of the SINR comprises:

calculating the SINR based on the following equation;

5. The method of claim 4, wherein the second feedback information comprises information about a total receive signal strength of the MS for the designated TX resource, and Pweak has the relation based on the following equation:

6. The method of claim 4, wherein the second feedback information comprises a weak interference component calculated in the designated TX resource region based on the following equation:

7. A method of a Mobile Station (MS) for providing feedback information for scheduling to a first Base Station (BS) of BSs in a wireless communication system that uses beamforming and comprises the BSs and the MS in coordinated communication, the method comprising:

transmitting to the first BS first feedback information comprising a receive signal strength measurement result in paths selected from a plurality of downlink paths between the BSs and the MS;

receiving a transmit (TX) resource allocated for interference measurement of the MS designated by the first BS based on the first feedback information; and

transmitting to the first BS second feedback information comprising an interference measurement result in the designated TX resource region so that the first BS calculates a Signal to Interference plus Noise Ratio (SINR) of the MS based on the first feedback information and the second feedback information,

wherein the designated TX resource comprises a resource other than a signal TX resource for the MS.

8. The method of claim 7, further comprising:

receiving from the first BS scheduling information generated based on the first feedback information.

9. The method of claim 8, wherein the first feedback information comprises a BS IDentifier (ID), a TX beam ID, and a receive (RX) beam ID indicating RX beam use of the MS in the BS.

10. The method of claim 9, wherein the SINR is calculated based on the following equation:

11. The method of claim 10, wherein the second feedback information comprises information about a total receive signal strength of the MS for the designated TX resource, and Pweak has the relation based on the following equation:

12. The method of claim 10, wherein the second feedback information comprises a weak interference component calculated in the designated TX resource region based on the following equation:

13. An apparatus of a first Base Station (BS) of BSs for processing feedback information for scheduling in a wireless communication system that uses beamforming and comprises the BSs and a Mobile Station (MS) in coordinated communication, the apparatus comprising:

a feedback information receiver configured to receive from the MS first feedback information comprising a receive signal strength measurement result in paths selected from a plurality of downlink paths between the BSs and the MS, and second feedback information comprising an interference measurement result in the designated TX resource region; and

a scheduler configured to designate a transmit (TX) resource for interference measurement of the MS based on the first feedback information, and calculate a Signal to Interference plus Noise Ratio (SINR) of the MS based on the first feedback information and the second feedback information,

wherein the designated TX resource comprises a resource other than a signal TX resource for the MS.

14. The apparatus of claim 13, wherein the scheduler generates scheduling information based on the first feedback information, the apparatus further comprising:

a transmitter configured to transmit the generated scheduling information to the MS.

15. The apparatus of claim 14, wherein the first feedback information comprises a BS IDentifier (ID), a TX beam ID, and a receive (RX) beam ID indicating RX beam use of the MS in the BS.

16. The apparatus of claim 15, wherein the scheduler calculates the SINR based on the following equation:

17. The apparatus of claim 16, wherein the second feedback information comprises information about a total receive signal strength of the MS for the designated TX resource, and Pweak has the relation based on the following equation:

18. The apparatus of claim 16, wherein the second feedback information comprises a weak interference component calculated in the designated TX resource region based on the following equation:

19. An apparatus of a Mobile Station (MS) for providing feedback information for scheduling to a first Base Station (BS) of BSs in a wireless communication system that uses beamforming and comprises the BSs and the MS in coordinated communication, the apparatus comprising:

a receive signal strength measurer configured to measure a receive signal strength in paths selected from a plurality of downlink paths between the BSs and the MS;

an information transmitter configured to receive a transmit (TX) resource designated by the first BS for interference measurement of the MS based on the first feedback information comprising the receive signal strength measurement result; and

a transmitter configured to transmit to the first BS the first feedback information and second feedback information comprising the interference measurement result in the designated TX resource region so that the first BS calculates a Signal to Interference plus Noise Ratio (SINR) of the MS based on the first feedback information and the second feedback information,

wherein the designated TX resource comprises a resource other than a signal TX resource for the MS.

20. The apparatus of claim 19, wherein the information receiver receives from the first BS scheduling information generated based on the first feedback information.

21. The apparatus of claim 20, wherein the first feedback information comprises a BS IDentifier (ID), a TX beam ID, and a receive (RX) beam ID indicating RX beam use of the MS in the BS.

22. The apparatus of claim 21, wherein the SINR is calculated based on the following equation:

23. The apparatus of claim 22, wherein the second feedback information comprises information about a total receive signal strength of the MS for the designated TX resource, and Pweak has the relation based on the following equation:

24. The apparatus of claim 22, wherein the second feedback information comprises a weak interference component calculated in the designated TX resource region based on the following equation: