METHOD OF SELECTING PLURALITY OF SETS OF OPTIMAL BEAM PAIRS IN WIRELESS COMMUNICATION SYSTEM

• US 20180205435A1
• Filed: 01/16/2018
• Published: 07/19/2018
• Est. Priority Date: 01/16/2017
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: NAIR, Jinesh Parameshwaran, Kumar, Ranjit, Guchhait, Atanu, Lee, Dae-Ryong, Prakash, Ved
• Granted Patent: US 10,224,991 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0615 of weighted versions of same signal
• CPC Class Codes: H04B 7/0695 using beam selection
• CPC Class Codes: H04B 7/088 using beam selection

Abstract

The present disclosure provides a method of selecting a plurality of sets of optimal beam pairs in a wireless communication system. The method includes estimating channels associated with a plurality of transmit ports for each receive port from a plurality of receiver ports. Further, the method includes selecting the plurality of optimal transmit and receive beam pairs using average power level computation and capacity maximization techniques.

Claims

1. A method of selecting a plurality of sets of optimal transmit beam pairs and receive beam pairs in a wireless communication system, the method comprising:

estimating, by a receiver, channels associated with a plurality of transmit ports for each receive port from a plurality of receive ports; and

determining, by the receiver, the plurality of sets of optimal transmit beam pairs and receive beam pairs using;

average power level at each receive port for at least one transmit port based on the estimated channel associated between the transmit beam and receive beam pairs,

a set of first power matrices, wherein each first power matrix, from the set of first power matrices, comprises at least one transmit port, transmit beam ID and receive beam ID pairs associated with each receive port, wherein the set of first power matrices is formed based on the average power level at each of the receive port, and

a second capacity matrix formed based on capacity maximization obtained from the set of first power matrices, wherein the plurality of sets of optimal transmit beam pairs and receive beam pairs associated with each of the transmit and receive port is selected from the second capacity matrix.

2. The method of claim 1, wherein the average power level at each receive port for at least one transmit port based on the estimated channel associated between the transmit beam and receive beam pairs is determined by:

computing the average power level at each receive port for at least one transmit port based on the estimated channel; and

determining that the average power level of each receive port for at least one transmit port meets a power level threshold.

3. The method of claim 1, wherein the capacity maximization, obtained from the set of first power matrices, is determined based on one of maximizing a Signal-to-Interference plus noise ratio (SINR) and a function of SINR associated with one or more sets of transmit beam and receive beam pairs associated with the plurality of receive antenna ports.

4. The method of claim 1, wherein one or more sets of capacity maximizing beam pairs comprises of a number of elements where each element is associated with a transmit port number, a receive port number, the transmit beam ID and the receive beam ID pairs.

5. The method of claim 1, wherein determining the plurality of sets of optimal transmit beam pairs and receive beam pairs comprises:

identifying at least one transmit beam ID and receive beam ID pairs by traversing diagonally across a third matrix;

anchoring the at least one transmit beam ID and receive beam ID pairs identified in the third matrix;

performing a scan over at least one transmit beam ID and receive beam ID pairs in the third matrix using the at least one anchored transmit beam ID and receive beam ID pairs; and

determining, by the receiver, the plurality of sets of optimal transmit beam pairs and receive beam pairs based on the scan over the at least one anchored transmit beam ID and receive beam ID pairs.

6. The method of claim 5, wherein the third matrix is determined based on the estimated channel associated with at least one transmit port from a plurality of transmit ports associated with each receive port from a plurality of receive ports.

7. A method of selecting a plurality of sets of optimal transmit beam pairs and receive beam pairs in a wireless communication system, the method comprising:

estimating, by a receiver, channels associated with a plurality of transmit ports for each receive port from a plurality of receive ports; and

determining, by the receiver, the plurality of sets of optimal transmit beam and receive beam pairs by;

identifying at least one transmit beam ID and receive beam ID pairs by traversing diagonally across a first matrix,

anchoring, by the receiver, the at least one transmit beam ID and receive beam ID pairs identified in the first matrix,

performing, by the receiver, a scan over at least one transmit beam ID and receive beam ID pairs in the first matrix using the at least one anchored transmit beam ID and receive beam ID pairs, and

determining, by the receiver, the plurality of sets of optimal transmit beam pairs and receive beam pairs based on the scan over the at least one anchored transmit beam ID and receive beam ID pairs.

8. The method of claim 7, wherein the first matrix is determined based on the estimated channel associated with a plurality of transmit ports for each receive port from a plurality of receiver ports.

9. The method of claim 7, wherein at least one set of optimal transmit beam and receive beam pairs from the plurality of sets of optimal transmit beam and receive beam pairs comprises of a number of elements where each element is associated with a transmit port number, a receive port number, the transmit beam ID and the receive beam ID pairs.

10. A receiver for selecting a plurality of optimal beam pairs in a wireless communication system, the receiver comprises:

a memory,

a processor, coupled to the memory, and

a beam pair selector, coupled to the processor, configured to;

estimate channels associated with a plurality of transmit ports for each receive port from a plurality of receiver ports for transmit beam and receive beam pairs; and

determine the plurality of sets of optimal transmit beam and receive beam pairs using;

average power level at each receive port for at least one transmit port based on the estimated channel associated between the transmit beam and receive beam pairs,

a set of first power matrices, wherein each first power matrix, from the set of power matrices, comprises at least one transmit port, transmit beam ID and receive beam ID pairs associated with each receive port, wherein the set of first power matrices is formed based on the average power level at each of the receive port, and

a second capacity matrix formed based on capacity maximization obtained from the set of first power matrices, wherein the plurality of sets of optimal transmit beam pairs and receive beam pairs associated with each of the transmit and receive ports is selected from the second capacity matrix.

11. The receiver of claim 10, wherein the average power level at each receiver port for at least one transmit port based on the estimated channel associated between the transmit beam and receive beam pairs is determined by:

computing the average power level at each receive port for at least one transmit port based on the estimated channel; and

determining that the average power level of each receive port for at least one transmit port meets a power level threshold.

12. The receiver of claim 10, wherein the capacity maximization obtained from the set of first power matrices is determined based on one of maximizing a Signal-to-Interference plus noise ratio (SINR) and a function of SINR associated with one or more sets of transmit beam and receive beam pairs associated with the plurality of receive antenna ports.

13. The receiver of claim 10, wherein one or more sets of capacity maximizing beam pairs comprises of a number of elements where each element is associated with a transmit port number, a receive port number, the transmit beam ID and the receive beam ID pairs.

14. The receiver of claim 10, wherein determining one set of optimal transmit beam and receive beam pairs comprises:

identifying at least one transmit beam ID and receive beam ID pairs by traversing diagonally across a third matrix;

anchoring the at least one transmit beam ID and receive beam ID pairs identified in the third matrix;

performing a scan over at least one transmit beam ID and receive beam ID pair in the third matrix using the at least one anchored transmit beam ID and receive beam ID pairs; and

determining the plurality of sets of optimal transmit beam pairs and receive beam pairs based on the scan over the at least one anchored transmit beam ID and receive beam ID pairs.

15. The receiver of claim 14, wherein the third matrix is determined based on the estimated channel associated with at least one transmit port from a plurality of transmit ports associated with each receive port from a plurality of receiver ports and the associated transmit beam and receive beam pairs.

16. A receiver for selecting a plurality of sets of optimal transmit beam pairs and receive beam pairs in a wireless communication system, the receiver comprises:

a memory,

a processor, coupled to the memory, and

a beam pair selector, coupled to the processor, configured to;

estimate channels associated with a plurality of transmit ports for each receive port from a plurality of receive ports, and

determine the plurality of sets of optimal transmit beam and receive beam pairs by;

identifying at least one transmit beam ID and receive beam ID pairs by traversing diagonally across a first matrix,

anchoring the at least one transmit beam ID and receive beam ID pairs identified in the first matrix,

performing a scan over at least one transmit beam ID and receive beam ID pairs in the first matrix using the at least one anchored transmit beam ID and receive beam ID pairs, and

determining the plurality of sets of optimal beam transmit beam pairs and receive pairs based on the scan over the at least one anchored transmit beam ID and receive beam ID pairs.

17. The receiver of claim 16, wherein the first matrix is determined based on the estimated channel associated with a plurality of transmit ports for each receive port from a plurality of receiver ports and the associated transmit beam and receive beam pairs.

18. The receiver of claim 16, wherein at least one set of optimal transmit beam and receive beam pairs from the plurality of sets of optimal transmit beam and receive beam pairs comprises of a number of elements where each element is associated with a transmit port number, a receive port number, the transmit beam ID and the receive beam ID pairs.