BEAM FORMING METHOD FOR A TRANSMITTING ANTENNA AND A DEVICE THEREOF

• US 20180254811A1
• Filed: 03/01/2018
• Published: 09/06/2018
• Est. Priority Date: 03/01/2017
• Status: Active Grant

• Current Assignee: Delhi Technological University, Samsung Electronics Co. Ltd.
• Original Assignee: Delhi Technological University, Samsung Electronics Co. Ltd.
• Inventors: AGRAWAL, Sachin Kumar, SHARMA, Kapil
• Granted Patent: US 10,454,553 B2
• Time in Patent Office: Days
• CPC Class Codes: G01S 13/06 Systems determining position data of a target
• CPC Class Codes: G01S 13/34 using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
• CPC Class Codes: G01S 13/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S13/46
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present disclosure relates to method and device for beam forming in cellular communication systems. In accordance with one embodiment, the method comprises selecting at least one obstruction free zone and at least one obstruction free beam window, said at least one obstruction free beam window being selected within said at least one obstruction free zone. The method further comprises forming at least one beam based on said at least one obstruction free beam window thus selected.

Claims

1. A method of beam forming for a transmitting antenna, the method comprising:

determining at least one obstruction free zone;

determining at least one obstruction free beam window within the at least one obstruction free zone; and

forming at least one beam based on the determined at least one obstruction free beam window.

2. The method as claimed in claim 1, wherein determining the at least one obstruction free zone comprises:

receiving a reflected signal from a first zone; and

determining the first zone as an obstruction free zone, if at least one parameter of the reflected signal satisfies first set of predetermined conditions.

3. The method as claimed in claim 2, further comprising:

receiving one or more further reflected signals from one or more further zones; and

determining at least one further zone as an obstruction free zone, if at least one parameter of the further reflected signal corresponding to the at least one further zone satisfies the first set of predetermined conditions.

4. The method as claimed in claim 2,

wherein the at least one parameter of the reflected signal includes at least one of an intensity, angle of arrival (AOA), elevation angle, azimuth angle, frequency/Doppler shift, time of arrival (TOA), time difference of arrival (TDOA), power of the signal, signal to noise ratio, signal to interference plus noise ratio, interference, offset, coherent energy, incoherent energy, variance, correlation, and characteristics of at least one obstruction derived from the reflected signal.

5. The method as claimed in claim 4, wherein the characteristics include at least one of depth of the at least one obstruction, a width of the at least one obstruction, and a property of the at least one obstruction.

6. The method as claimed in claim 2, wherein the first set of predetermined conditions includes at least one of:

comparing intensity of the reflected signal with a first predefined threshold value;

comparing variance of the reflected signal with a first predefined threshold value;

comparing frequency of the reflected signal with a first predefined threshold value;

comparing time of arrival (TOA) of the reflected signal with a first predefined threshold value;

comparing angle of arrival of the reflected signal with a first predefined threshold value;

comparing power of the reflected signal with a first predefined threshold value;

comparing signal to noise ratio with a first predefined threshold value;

comparing signal to interference plus noise ratio with a first predefined threshold value; and

comparing interference with a first predefined threshold value.

7. The method as claimed in claim 2, wherein the determining the at least one obstruction free beam window comprises:

determining a first set of window parameters of a first beam window based on the at least one parameter of a reflected beam corresponding to the determined obstruction free zone; and

determining the beam window as an obstruction free beam window, if the first set of window parameters satisfy second set of predetermined conditions.

8. The method as claimed in claim 7, further comprising:

determining one or more further set of window parameters based on the at least one parameter of one or more further reflected signals corresponding to the at least one determined obstruction free zone; and

determining at least one further set of window parameters as at least one obstruction free beam window, if the at least one further set of window parameters satisfy the second set of predetermined conditions.

9. The method as claimed in claim 7, wherein the window parameters include a length of a beam window and a parameter controlling spectral characteristics of the beam window.

10. The method as claimed in claim 7, wherein the second set of predetermined conditions includes at least one of:

comparing bandwidth of the reflected signal with a predefined threshold value;

comparing intensity of the reflected signal with a second predefined threshold value;

comparing frequency of the reflected signal with a second predefined threshold value; and

comparing power of the reflected signal with a second predefined threshold value.

11. A device for beam forming for a transmitting antenna, the device comprising:

a memory configured to store data; and

at least one processor configured to;

determine at least one obstruction free zone;

determine at least one obstruction free beam window within the at least one obstruction free zone; and

form at least one beam based on the determined at least one obstruction free beam window.

12. The device as claimed in claim 11,

wherein to determine the at least one obstruction free zone, the device further comprises a transceiver configured to receive a reflected signal, the reflected signal being received from a first zone, and

wherein the at least one processor is configured to determine the first zone as an obstruction free zone, if at least one parameter of the reflected signal satisfies first set of predetermined conditions.

13. The device as claimed in claim 12, wherein:

the transceiver is further configured to receive one or more further reflected signals from one or more further zones; and

the at least one processor is configured to determine at least one further zone as an obstruction free zone, if at least one parameter of the further reflected signal corresponding to the further zone satisfies the first set of predetermined conditions.

14. The device as claimed in claim 12, wherein the at least one parameter of the reflected signal includes at least one of an intensity, angle of arrival (AOA), elevation angle, azimuth angle, frequency/Doppler shift, time of arrival (TOA), time difference of arrival (TDOA), power of the signal, signal to noise ratio, signal to interference plus noise ratio, interference, offset, coherent energy, incoherent energy, variance, correlation, and characteristics of at least one obstruction derived from the reflected signal.

15. The device as claimed in claim 14, wherein the characteristics include at least one of depth of the at least one obstruction, a width of the at least one obstruction, and a property of the at least one obstruction.

16. The device as claimed in claim 12, wherein the first set of predetermined conditions includes at least one of:

comparing intensity of the reflected signal with a first predefined threshold value;

comparing variance of the reflected signal with a first predefined threshold value;

comparing frequency of the reflected signal with a first predefined threshold value;

comparing time of arrival (TOA) of the reflected signal with a first predefined threshold value;

comparing angle of arrival of the reflected signal with a first predefined threshold value;

comparing power of the reflected signal with a first predefined threshold value;

comparing signal to noise ratio with a first predefined threshold value;

comparing signal to interference plus noise ratio with a first predefined threshold value; and

comparing interference with a first predefined threshold value.

17. The device as claimed in claim 12, wherein to determine the at least one obstruction free beam window, the at least one processor is configured to:

determine a first set of window parameters of a first beam window based on the at least one parameter of a reflected beam corresponding to the determined obstruction free zone; and

determine the beam window as an obstruction free beam window, if the first set of window parameters satisfy second set of predetermined conditions.

18. The device as claimed in claim 17, wherein:

the at least one processor is configured to determine one or more further set of window parameters based on the at least one parameter of one or more further reflected signals corresponding to the at least one determined obstruction free zone; and

the at least one processor is configured to determine at least one further set of window parameters as at least one obstruction free beam window, if the at least one further set of window parameters satisfy the second set of predetermined conditions.

19. The device as claimed in claim 17, wherein the window parameters include a length of a beam window and a parameter controlling spectral characteristics of the beam window.

20. The device as claimed in claim 17, wherein the second set of predetermined conditions includes at least one of:

comparing bandwidth of the reflected signal with a predefined threshold value;

comparing intensity of the reflected signal with a second predefined threshold value;

comparing frequency of the reflected signal with a second predefined threshold value; and

comparing power of the reflected signal with a second predefined threshold value.