Method and apparatus for controlling beamforming

Patent metadata

Field	Value
Publication number	US-10763928-B2
Application number	US-201615568631-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Apr 22, 2015
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

The present invention relates to techniques for a sensor network, machine-to-machine (M2M) communication, machine-type communication (MTC) and internet of things (IoT). The present invention may be applied to said technique-based intelligent services (such as smart home, smart building, smart city, smart or connected car, health care, digital education, retail business, and services associated with security and safety). A transmission apparatus of a wireless communication system according to an embodiment of the present invention comprises: a transmission unit for transmitting a compressed beacon frame by means of a plurality of transmission beams; a receiving unit for receiving information for the optimal transmission beam from among the plurality of transmission beams; and a control unit for controlling beamforming by means of a beam received from a terminal, wherein the data and header are compressed into a single frame in the compressed beacon frame.

First claim

The invention claimed is:

1. An apparatus of a base station in a wireless communication system, the apparatus comprising:
a transceiver configured to:
transmit a compressed beacon frame via each of a plurality of transmission beams of the base station;

receive, from a terminal, feedback information on a first transmission beam identified among the plurality of transmission beams of the base station; and
at least one processor configured to perform a control of a beamforming based on the feedback information,
wherein the compressed beacon frame includes a single header compressed by combining header information with data information, wherein information in the data information that is overlapped with the header information is reduced and is used for the single header, and
wherein the single header comprises a part of a beacon interval control field and a part of a basic service set identification (BSSID) field.

2. The apparatus of claim 1 , wherein the compressed beacon frame comprises an identifier for indicating a presence of the single header.

3. The apparatus of claim 1 , wherein the compressed beacon frame is transmitted within a beacon transmission interval (BTI) included in a beacon interval, and
wherein the feedback information is received within an association beamforming training (A-BFT) interval included in the beacon interval.

4. The apparatus of claim 1 , wherein, in order to receive the feedback information on the first transmission beam, the at least one processor is further configured to receive the feedback information via each of a plurality of transmission beams of the terminal, and
wherein the at least one processor is further configured to:
identify a second transmission beam of the terminal among the plurality of transmission beams of the terminal; and
transmit information for indicating the second transmission beam of the terminal by using the first transmission beam in a direction corresponding to the feedback information.

5. The apparatus of claim 1 , wherein the at least one processor is further configured to allocate slots in a number corresponding to a maximum number of beams of the terminal for reception.

6. The apparatus of claim 1 , wherein the transceiver is further configured to:
transmit the compressed beacon frame without interval with two adjacent compressed beacon frames.

7. An apparatus of a terminal in a wireless communication system, the terminal comprising:
a transceiver configured to:
receive, from a base station, a compressed beacon frame transmitted via each of a plurality of transmission beams of the base station;
transmit, to the base station, a compressed feedback frame comprising information on a first transmission beam identified among the plurality of transmission beams of the base station; and
at least one processor configured to perform a control of a beamforming based on the information on the first transmission beam,

wherein the compressed feedback frame includes a single header compressed by combining header information with data information, wherein information in the data information that is overlapped with the header information is reduced and is used for the single header, and
wherein the single header comprises a part of a basic service set identification (BSSID) field, a part of a sector sweep (SSW) field, and a part of an SSW feedback field.

8. The apparatus of claim 7 , wherein the compressed feedback frame is transmitted within an association beamforming training (A-BFT) interval in a beacon interval, and
wherein the compressed beacon frame is received within a beacon transmission interval (BTI).

9. The apparatus of claim 7 , wherein the transceiver is further configured to:
receive a sector sweep (SSW) feedback frame comprising information on a second transmission beam among a plurality of transmission beams of the terminal; and
transmit SSW acknowledge (ACK) via the second transmission beam of the terminal.

10. The apparatus of claim 7 , wherein the information comprises a channel quality indicator (CQI) and an indication of the first transmission beam of the base station.

11. A method for operating a base station in a wireless communication system, the method comprising:
transmitting a compressed beacon frame via each of a plurality of transmission beams of the base station;
receiving, from a terminal, feedback information on a first transmission beam identified among the plurality of transmission beams of the base station; and
performing a control of beamforming based on the feedback information,
wherein the compressed beacon frame includes a single header compressed by combining header information with data information, wherein information in the data information that is overlapped with the header information is reduced and is used for the single header, and
wherein the single header comprises a part of a beacon interval control field and a part of a basic service set identification (BSSID) field.

12. The method of claim 11 , wherein the compressed beacon frame comprises an identifier for indicating a presence of the single header.

13. The method of claim 11 , wherein the compressed beacon frame is transmitted within a beacon transmission interval (BTI) included in a beacon interval, and
wherein the feedback information is received within an association beamforming training (A-BFT) interval included in the beacon interval.

14. The method of claim 11 , wherein the receiving the feedback information on the first transmission beam comprises receiving the feedback information via each of a plurality of transmission beams of the terminal, and
wherein the method further comprises:
identifying a second transmission beam of the terminal among the plurality of transmission beams of the terminal; and
transmitting information for indicating the second transmission beam of the terminal by using the first transmission beam in a direction corresponding to the feedback information.

15. The method of claim 11 , the method further comprising allocating slots in a number corresponding to a maximum number of beams of the terminal for reception.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Oh Jongho
• Ryoo Sunheui
• Yoon Jungmin
• Kim Jung Ju
• Roh Donghwi
• Yoon Sungrok
• Jo Ohyun

Classifications

• H04W72/542

  using measured or perceived quality · CPC title

• H04B7/06952

  Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping · CPC title

• H04B7/063 Primary

  Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection · CPC title

• H04W74/08

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• H04B7/088

  using beam selection · CPC title