Dual mode communications device with null steering and methods for use therewith

• US 10,602,377 B2
• Filed: 02/04/2019
• Issued: 03/24/2020
• Est. Priority Date: 10/19/2017
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Vannucci, Giovanni, Henry, Paul Shala, Willis, III, Thomas M.
• Primary Examiner(s): West, Lewis G
• Application Number:
  US16/266,965
• Publication Number:
  US 20190182680A1
• Time in Patent Office: 414 Days
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 13/24 constituted by a dielectric or ferromagnetic rod or pipe H01Q13/28 takes precedence
• CPC Class Codes: H01Q 19/08 for modifying the radiation pattern of a radiating horn in which it is located corrugated horns H01Q13/0208; producing a circular polarisation H01Q13/0241
• CPC Class Codes: H01Q 3/40 with phasing matrix
• CPC Class Codes: H01Q 5/30 Arrangements for providing operation on different wavebands
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to transmit first radio frequency (RF) signals to a remote device in an RF band and to transmit first millimeter wave (MMW) signals to the remote device in a MMW frequency band, wherein the MMW frequency band is above the RF band. A base transceiver station is configured to generate a consolidated steering matrix in accordance with the transmission of the first RF signals to the remote device in the RF band. A remote radio head is configured to convert the consolidated steering matrix to a converted steering matrix that facilitates the transmission of the first MMW signals to the remote device in the MMW frequency band via the dual-band antenna array in accordance with an antenna beam pattern having at least one selected null direction, and further configured to generate the first MMW signals in accordance with the converted steering matrix.

Claims

1. A communication device, comprising:

a dual-band antenna array configured to transmit first radio frequency (RF) signals to a remote device in a first RF band and to transmit second RF signals to the remote device in a second RF band, wherein the second RF band is above the first RF band;

a base transceiver station configured to generate a consolidated steering matrix in accordance with the transmission of the first RF signals to the remote device in the first RF band; and

a remote radio head (RRH) configured to convert the consolidated steering matrix to a converted steering matrix that facilitates the transmission of the second RF signals to the remote device in the second RF band via the dual-band antenna array in accordance with an antenna beam pattern having at least one selected null direction, and further configured to generate the second RF signals in accordance with the converted steering matrix.

2. The communication device of claim 1, wherein the antenna beam pattern further includes a selected lobe in a direction corresponding to the remote device.

3. The communication device of claim 1, wherein the at least one selected null direction is selected to correspond to a direction of an interfering device.

4. The communication device of claim 1, wherein the RRH includes a conversion processor and a plurality of front ends, wherein the conversion processor is configured to convert the consolidated steering matrix to the converted steering matrix, and wherein the plurality of front ends is configured to generate the second RF signals in accordance with the converted steering matrix.

5. The communication device of claim 1, wherein the RRH is further configured to receive third RF signals, via the dual-band antenna array, from the remote device in the first RF band and to recover a feedback matrix from the third RF signals;

and

wherein the base transceiver station generates the consolidated steering matrix based on the feedback matrix.

6. The communication device of claim 1, wherein the consolidated steering matrix includes co-phasing parameters of the dual-band antenna array corresponding to an operation in the first RF band.

7. The communication device of claim 1, wherein the converted steering matrix includes co-phasing parameters of the dual-band antenna array corresponding to an operation in the second RF band.

8. The communication device of claim 1, wherein the RRH operates in accordance with a fourth generation (4G) wireless protocol in the first RF band and the RRH operates in accordance with a fifth-generation (5G) wireless protocol in the second RF band.

9. The communication device of claim 1, wherein the RRH is further configured to receive third RF signals from the remote device in the second RF band via the dual-band antenna array, in accordance with the converted steering matrix.

10. The communication device of claim 9, wherein the RRH is further configured to adjust the converted steering matrix, based on the third RF signals received from the remote device.

11. A method, comprising:

generating, via a base transceiver station, a consolidated steering matrix in accordance with transmission of first radio frequency (RF) signals to a remote device in a first RF band;

converting, via a remote radio head (RRH), the consolidated steering matrix to a converted steering matrix that facilitates transmission of second RF signals to the remote device in second RF band via an antenna in accordance with an antenna beam pattern having at least one selected null direction, wherein the second RF band is above the first RF band;

generating, via the RRH, the second RF signals in accordance with the converted steering matrix; and

transmitting, via the antenna and in accordance with the antenna beam pattern having the at least one selected null direction, the second RF signals to the remote device in the second RF band.

12. The method of claim 11, wherein the antenna beam pattern further includes a selected lobe in a direction corresponding to the remote device.

13. The method of claim 11, wherein the at least one selected null direction is selected to correspond to a direction of an interfering device.

14. The method of claim 11, further comprising:

receiving third RF signals from the remote device in the first RF band;

recovering a feedback matrix from the third RF signals; and

generating the consolidated steering matrix based on the feedback matrix.

15. The method of claim 11, wherein the consolidated steering matrix includes co-phasing parameters of the antenna corresponding to an operation in the first RF band.

16. The method of claim 11, wherein the converted steering matrix includes co-phasing parameters of the antenna corresponding to an operation in the second RF band.

17. The method of claim 11, wherein the RRH operates in accordance with a fourth generation (4G) wireless protocol in the first RF band and the RRH operates in accordance with a fifth-generation (5G) wireless protocol in the second RF band.

18. The method of claim 11, further comprising:

receiving third RF signals from the remote device in the second RF band, in accordance with the converted steering matrix.

19. The method of claim 18, further comprising:

adjusting the converted steering matrix, based on the third RF signals received from the remote device.

20. A communication device, comprising:

an antenna array configured to transmit first radio frequency (RF) signals to a remote device in a first RF band and to transmit second RF signals to the remote device in a second RF band, wherein the second RF band is above the first RF band;

a base transceiver station configured to generate a consolidated steering matrix in accordance with the transmission of the first RF signals with the remote device in the first RF band; and

a remote radio head (RRH) including a conversion processor and a plurality of front ends, wherein the conversion processor is configured to convert the consolidated steering matrix to a converted steering matrix that facilitates the transmission of the second RF signals to the remote device in the second RF band via the antenna array in accordance with an antenna beam pattern having at least one selected null direction, and wherein the plurality of front ends is configured to generate the second RF signals in accordance with the converted steering matrix.