Enhanced multiple-input multiple-output beam refinement protocol transmit sector sweep

• US 10,461,817 B2
• Filed: 12/21/2018
• Issued: 10/29/2019
• Est. Priority Date: 01/02/2018
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Da Silva, Claudio, Kosloff, Jonathan, Lomayev, Artyom, Chen, Cheng, Cordeiro, Carlos
• Primary Examiner(s): Aghdam, Freshteh N
• Application Number:
  US16/229,573
• Publication Number:
  US 20190158156A1
• Time in Patent Office: 312 Days
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0421 utilizing implicit feedback, e.g. steered pilot signals
• CPC Class Codes: H04B 7/0469 taking special antenna structures, e.g. cross polarized antennas into account
• CPC Class Codes: H04B 7/0634 Antenna weights or vector/matrix coefficients
• CPC Class Codes: H04B 7/0682 using phase diversity (e.g. phase sweeping)
• CPC Class Codes: H04B 7/0684 using different training sequences per antenna
• CPC Class Codes: H04B 7/0695 using beam selection

Abstract

This disclosure describes systems, methods, and devices related to enhanced multiple-input multiple-output (MIMO) beam refinement protocol (BRP) transmit sector sweep (TXSS). A device may establish a first communication link using a first antenna transmit chain of one or more transmit chains of the initiator, wherein the one or more antenna transmit chains further comprise a second antenna transmit chain. The device may initiate a MIMO BRP TXSS over the one or more antenna transmit chains. The device may map a single space-time stream over the one or more antenna transmit chains. The device may cause to send, to a responder device, an enhanced directional multi-gigabit (EDMG) frame using spatial expansion based on the mapping of the single space-time stream. The device may identify a feedback frame from the responder device. The device may determine one or more antenna weight vectors (AWVs) to use in a MIMO phase of the MIMO beamforming training based on the feedback frame.

Claims

1. A device of an initiator for performing multiple-input multiple-output (MIMO) beamforming training the device comprising processing circuitry and storage, the processing circuitry coupled to the storage, and the processing circuitry configured to:

establish a first communication link using a first antenna transmit chain of one or more transmit chains of the initiator, wherein the one or more antenna transmit chains further comprise a second antenna transmit chain;

initiate a MIMO beam refinement protocol (BRP) transmit sector sweep (TXSS) over the one or more antenna transmit chains;

map a single space-time stream over the one or more antenna transmit chains;

cause to send, to a responder device, an enhanced directional multi-gigabit (EDMG) frame using spatial expansion based on the mapping of the single space-time stream;

identify a feedback frame from the responder device; and

determine one or more antenna weight vectors (AWVs) to use in a MIMO phase of the MIMO beamforming training based on the feedback frame.

2. The device of claim 1, wherein to cause to send an EDMG frame using spatial expansion comprises the processing circuitry being further configured to cause to send a first EDMG frame over the first antenna transmit chain and a second EDMG frame over the second antenna transmit chain, wherein the second EDMG frame is the same as the first EDMG frame shifted in a time domain.

3. The device of claim 1, wherein a training (TRN) field of the EDMG frame comprises one or more orthogonal waveforms.

4. The device of claim 1, wherein the processing circuitry is further configured to:

identify a repetition indication received from the responder device; and

cause to send, during an initiator BRP TXSS phase, one or more EDMG BRP packets consecutively repeated based on the repetition indication.

5. The device of claim 1, wherein the MIMO BRP TXSS comprises a setup phase, an initiator BRP TXSS phase, a responder BRP TXSS phase, and a feedback phase.

6. The device of claim 5, wherein the processing circuitry is further configured to:

use, during the setup phase, a first AWV associated with the first antenna transmit chain; and

cause to send to the responder device one or more fields of a frame using the first AWV during the MIMO BRP TXSS.

7. The device of claim 6, wherein the one or more fields exclude a training (TRN) field of the frame.

8. The device of claim 1, further comprising a transceiver configured to transmit and receive wireless signals.

9. The device of claim 8, further comprising an antenna of the initiator, including the first antenna transmit chain and the second antenna transmit chain, coupled to the processing circuitry.

10. A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:

establishing a first communication link using a first antenna transmit chain of one or more transmit chains of an initiator, wherein the one or more antenna transmit chains further comprise a second antenna transmit chain;

initiating a MIMO beam refinement protocol (BRP) transmit sector sweep (TXSS) over the one or more antenna transmit chains;

mapping a single space-time stream over the one or more antenna transmit chains;

causing to send, to a responder device, an enhanced directional multi-gigabit (EDMG) frame using spatial expansion based on the mapping of the single space-time stream;

identifying a feedback frame from the responder device; and

determining one or more antenna weight vectors (AWVs) to use in a MIMO phase of the MIMO beamforming training based on the feedback frame.

11. The non-transitory computer-readable medium of claim 10, wherein to cause to send an EDMG frame using spatial expansion comprises the operations further comprise causing to send a first EDMG frame over the first antenna transmit chain and a second EDMG frame over the second antenna transmit chain, wherein the second EDMG frame is the same as the first EDMG frame shifted in a time domain.

12. The non-transitory computer-readable medium of claim 10, wherein a training (TRN) field of the EDMG frame comprises one or more orthogonal waveforms.

13. The non-transitory computer-readable medium of claim 10, wherein the operations further comprise:

identifying a repetition indication received from the responder device; and

causing to send, during an initiator BRP TXSS phase, one or more EDMG BRP packets consecutively repeated based on the repetition indication.

14. The non-transitory computer-readable medium of claim 10, wherein the MIMO BRP TXSS comprises a setup phase, an initiator BRP TXSS phase, a responder BRP TXSS phase, and a feedback phase.

15. The non-transitory computer-readable medium of claim 14, wherein the operations further comprise:

using, during the setup phase, a first AWV associated with the first antenna transmit chain; and

causing to send to the responder device one or more fields of a frame using the first AWV during the MIMO BRP TXSS.

16. The non-transitory computer-readable medium of claim 15, wherein the one or more fields exclude a training (TRN) field of the frame.

17. A method comprising:

establishing, by one or more processors, a first communication link using a first antenna transmit chain of one or more transmit chains of an initiator, wherein the one or more antenna transmit chains further comprise a second antenna transmit chain;

initiating a MIMO beam refinement protocol (BRP) transmit sector sweep (TXSS) over the one or more antenna transmit chains;

mapping a single space-time stream over the one or more antenna transmit chains;

causing to send, to a responder device, an enhanced directional multi-gigabit (EDMG) frame using spatial expansion based on the mapping of the single space-time stream;

identifying a feedback frame from the responder device; and

determining one or more antenna weight vectors (AWVs) to use in a MIMO phase of the MIMO beamforming training based on the feedback frame.

18. The method of claim 17, wherein to cause to send an EDMG frame using spatial expansion further comprising causing to send a first EDMG frame over the first antenna transmit chain and a second EDMG frame over the second antenna transmit chain, wherein the second EDMG frame is the same as the first EDMG frame shifted in a time domain.

19. The method of claim 17, wherein a training (TRN) field of the EDMG frame comprises one or more orthogonal waveforms.

20. The method of claim 17, wherein the processing circuitry is further configured to:

identifying a repetition indication received from the responder device; and

causing to send, during an initiator BRP TXSS phase, one or more EDMG BRP packets consecutively repeated based on the repetition indication.