Enhanced beamforming training in a wireless local area networks

Patent metadata

Field	Value
Publication number	US-9893785-B2
Application number	US-201514969506-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	Sep 11, 2015
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

Apparatus, computer readable media, and methods for enhanced beamforming training in a wireless local area network are disclosed. An apparatus of a access point or station is disclosed. The apparatus including processing circuitry where the processing circuitry is configured to encode an EBRP packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields. The third number may be less than or equal to N-TX times N-RX. The processing circuitry may be configured to cause the first portion of the EBRP packet to be transmitted and cause the second portion to be transmitted, where two or more of the third number of training subfields are to be transmitted simultaneously using different antennas and orthogonal sequences.

First claim

What is claimed is:

1. An apparatus of an station, the apparatus comprising: memory; and processing circuitry coupled to the memory, the processing circuitry configured to:
encode an enhanced beam refining protocol (EBRP) packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields, wherein the third number is less than or equal to N-TX times N-RX;
configure the station to transmit the first portion of the EBRP packet; and
configure the station to transmit the second portion comprising the third number of training subfields, wherein two or more of the training subfields of the third number of training subfields are to be transmitted simultaneously using different antennas of a plurality of antennas and orthogonal sequences.

2. The apparatus of claim 1 , wherein the EBRP packet further comprises a legacy header which indicates a packet length of the first portion and the second portion, and wherein the second portion further comprises automatic gain control (AGC).

3. The apparatus of claim 1 , wherein the processing circuitry is further configured to:
encode the EBRP packet with one or more association identifiers (AIDS), wherein the AIDS indicate stations that are to respond to the EBRP packet.

4. The apparatus of claim 3 , wherein the processing circuitry is further configured to:
receive feedback from one or more stations corresponding to the one or more AIDs in a sequential order in accordance with an order of the AIDs.

5. The apparatus of claim 4 , wherein the processing circuitry is further configured to:
encode a final EBRP feedback packet based on the feedback from the one or more stations; and
cause the final EBRP feedback packet to be transmitted to the one or more stations.

6. The apparatus of claim 3 , wherein the processing circuitry is further configured to:
encode a poll packet to each station of a plurality of stations corresponding to the one or more AIDs;
cause to be transmitted the poll packet; and
receive a feedback from the station in response to the poll packet.

7. The apparatus of claim 1 , wherein if only one station is to be trained an antenna weight vector that corresponds to a best transmitted sector for the one station is to be used for each antenna of the plurality of antennas to transmit the first portion of the EBRP packet.

8. The apparatus of claim 1 , wherein if multiple stations are to be trained, each antenna of the plurality of antennas is to use a best transmit sector for the antenna to transmit the first portion of the EBRP packet.

9. The apparatus of claim 1 , wherein the processing circuitry is further configure to:
encode in the first portion a media access control data portion, wherein the data portion comprises a 3 bit weight vector for each of the first number of transmit antenna training settings for each antenna of the plurality of antennas.

10. The apparatus of claim 1 , wherein the station is one from the following group:
an Institute of Electrical and Electronic Engineering (IEEE) 802.11ay access point, an IEEE 802.11ay station, IEEE 802.11ay a personal basic service set (PB SS) control point (PCP), an access point, a station, and a PCP.

11. The apparatus of claim 1 , wherein the processing circuitry is configured to transmit and receive in accordance with multiple input multiple output (MIMO), multiple-user MIMO (MU-MIMO) single input single output (SISO), and/or multiple users single input single output (MU-SISO).

12. The apparatus of claim 1 , further comprising: transceiver circuitry; and, a plurality of antennas coupled to the transceiver circuitry.

13. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to perform operations for device-to-device spatial reuse on a station, the operations to configure the station to:
encode an enhanced beam refining protocol (EBRP) packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields, wherein the third number is less than or equal to N-TX times N-RX;
configure the station to transmit the first portion of the EBRP packet; and
configure the station to transmit the second portion comprising the third number of training subfields, wherein two or more of the training subfields of the third number of training subfields are to be transmitted simultaneously using different antennas of a plurality of antennas and orthogonal sequences.

14. The non-transitory computer-readable storage medium of claim 13 , wherein the instructions further configure the station to:
encode the BRP packet with one or more association identifiers (AIDS), wherein the AIDS indicate stations that are to respond to the EBRP packet.

15. The non-transitory computer-readable storage medium of claim 13 , wherein the instructions further configure the station to:
receive feedback from a one or more stations corresponding to the one or more AIDs in a sequential order in accordance with an order of the AIDs.

16. The non-transitory computer-readable storage medium of claim 15 , wherein the instructions further configure the station to:
encode a final EBRP feedback packet based on the feedback from the one or more stations; and
cause the final EBRP feedback packet to be transmitted to the one or more stations.

17. The non-transitory computer-readable storage medium of claim 15 , wherein the instructions further configure the station to:
encode a poll packet to each station of a plurality of stations corresponding to the one or more AIDs;
cause to be transmitted the poll packet; and
receive a feedback from the station in response to the poll packet.

18. A method performed by an station, the method comprising:
encoding an enhanced beam refining protocol (EBRP) packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields, wherein the third number is less than or equal to N-TX times N-RX;
transmitting the first portion of the EBRP packet; and
transmitting the second portion comprising the third number of training subfields to be transmitted, wherein two or more of the training subfields of the third number of training subfields are to be transmitted simultaneously using different antennas of a plurality of antennas and orthogonal sequences.

19. The method of claim 18 , further comprising:
encoding the BRP packet with one or more association identifiers (AIDS), wherein the AIDS indicate stations that are to respond to the EBRP packet.

20. An apparatus of an station, the apparatus comprising memory and processing circuitry coupled to the memory, the processing circuitry configured to:
decode a first portion of an enhanced beam refining protocol (EBRP) packet comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX);
decode a second portion comprising a third number of training subfields, wherein

Assignees

• Intel Ip Corp

Inventors

• Kasher Assaf
• Cordeiro Carlos
• Maltsev Alexander
• Lomayev Artyom

Classifications

• H04B7/0413

  MIMO systems · CPC title

• H04L69/22

  Parsing or analysis of headers · CPC title

• H04B7/0639

  Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title

• H04B7/06958 Primary

  Multistage beam selection, e.g. beam refinement · CPC title