SCHEME FOR PERFORMING BEAMFORMING IN COMMUNICATION SYSTEM

• US 20130301567A1
• Filed: 05/09/2013
• Published: 11/14/2013
• Est. Priority Date: 05/10/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: JEONG, Su-Ryong, SON, Yeong-Moon, YU, Hyun-Kyu, KIM, Tae-Young
• Granted Patent: US 10,375,733 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04B 7/0695 using beam selection
• CPC Class Codes: H04B 7/088 using beam selection
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

A method of performing beamforming in a base station is provided. The method includes receiving random access channel signals transmitted in one or more transmit beams from a terminal, using one or more receive beams, determining at least one best transmit beam from the one or more transmit beams and at least one best receive beam from the one or more receive beams, and transmitting information about the best transmit beam and the best receive beam to the terminal.

Claims

1. A method of performing beamforming in a base station, the method comprising:

receiving random access channel signals transmitted in one or more transmit beams from a terminal, using one or more receive beams;

determining at least one best transmit beam from the one or more transmit beams and at least one best receive beam from the one or more receive beams; and

transmitting information about the best transmit beam and the best receive beam to the terminal.

2. The method of claim 1, further comprising:

transmitting a receive beam configuration message that includes information about at least one receive beam assigned to each of a plurality of sub-channels that form the random access channel.

3. The method of claim 2, further comprising:

receiving a second random access channel signal from the terminal.

4. The method of claim 3, wherein the second random access channel comprises at least one of a bandwidth request channel, a reference channel-request channel, and a handover request channel.

17. A non-transitory computer-readable storage medium storing instructions that, when executed, cause at least one processor to perform the method of claim 1.

5. A method of performing beamforming in a terminal, the method comprising:

transmitting to a base station random access channel signals using one or more transmit beams; and

receiving from the base station information about at least one best transmit beam among the one or more transmit beams and information about at least one best receive beam among receive beams of the base station used to receive the random access channel signals.

6. The method of claim 5, further comprising:

receiving from the base station a receive beam configuration message that includes information about a receive beam assigned to each of a plurality of sub-channels that form the random access channel.

7. The method of claim 6, further comprising:

transmitting a second random access channel signal to the base station using information about the received at least one best receive beam of the base station and the receive beam configuration message.

8. The method of claim 7, wherein the second random access channel comprises at least one of a bandwidth request channel, a reference channel-request channel, and a handover request channel.

9. A base station for performing beamforming, the base station comprising:

a transceiver for receiving random access channel signals transmitted in one or more transmit beams from a terminal, using one or more receive beams; and

a controller for determining at least one best transmit beam from the one or more transmit beams and at least one best receive beam from the one or more receive beams, and for transmitting information about the best transmit beam and the best receive beam to the terminal.

10. The base station of claim 9, wherein the controller transmits a receive beam configuration message that includes information about at least one receive beam assigned to each of a plurality of sub-channels that form the random access channel.

11. The base station of claim 10, wherein the controller receives a second random access channel signal from the terminal.

12. The base station of claim 11, wherein the second random access channel comprises at least one of a bandwidth request channel, a reference channel-request channel, and a handover request channel.

13. A terminal for performing beamforming, the terminal comprising:

a transceiver for communicating signals with a base station; and

a controller for transmitting to the base station random access channel signals using one or more transmit beams, and for receiving from the base station information about at least one best transmit beam among the one or more transmit beams and information about at least one best receive beam among receive beams used to receive the random access channel signals.

14. The terminal of claim 13, wherein the controller receives from the base station a receive beam configuration message that includes information about a receive beam assigned to each of a plurality of sub-channels that form the random access channel.

15. The terminal of claim 14, wherein the controller transmits a second random access channel signal to the base station, using information about the received at least one best receive beam of the base station and the receive beam configuration message.

16. The terminal of claim 14, wherein the second random access channel comprises at least one of a bandwidth request channel, a reference channel-request channel, and a handover request channel.