Parallel channel training in multi-user multiple-input and multiple-output system

Patent metadata

Field	Value
Publication number	US-9712217-B2
Application number	US-201414582332-A
Country	US
Kind code	B2
Filing date	Dec 24, 2014
Priority date	Sep 8, 2014
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

This disclosure describes systems, and methods related to parallel channel training in communication networks. A first computing device comprising one or more processors and one or more transceiver component may receive a first connection request from a second computing device, and a second connection request from a third computing device. The first computing device may send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request. The first computing device may establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.

First claim

What is claimed is:

1. A method for training one or more communication channels in a wireless communication session comprising:
receiving, by a first computing device comprising one or more processors and one or more transceiver components, a first connection request from a second computing device, and a second connection request from a third computing device;
determining, by the first computing device, a first training field associated with the first connection request and a second training field associated with the second request, wherein the first training field includes a first control channel (CCH) field and the second training field includes a second CCH field;
sending, by the first computing device, the first training field to the second computing device based at least in part on the first connection request and sending in parallel the second training field to the third computing device based at least in part on the second connection request; and
establishing, by the first computing device, a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.

2. The method of claim 1 , wherein the first CCH field and the second CCH are sent on odd subcarriers and the first training field and the second training field are sent on even subcarriers.

3. The method of claim 1 , further comprising:
receiving a third connection request from the second computing device;
determining a third training field associated with the third connection request;
sending the third training field in sequence with the first training field to the second computing device; and
establishing a third spatial channel stream with the second computing device.

4. The method of claim 3 , wherein the first training field, the second training field and the third training field are sent in a high efficiency throughput preamble.

5. The method of claim 1 , wherein establishing the first spatial channel stream is based at least in part on a channel state information (CSI) associated with the second computing device.

6. The method of claim 1 , wherein the first computing device is an access point operating in multi-user multi-input and multi-output (MU-MIMO) wireless system.

7. An apparatus, comprising:
one or more processors;
at least one memory that stores computer-executable instructions; and
at least one processor of the one or more processors configured to access the at least one memory, wherein the at least one processor of the one or more processors is configured to execute the computer-executable instructions to:
receive a first connection request from a second computing device, and a second connection request from a third computing device;
determine a first training field associated with the first connection request and a second training field associated with the second request, wherein the first training field includes a first control channel (CCH) field and the second training field includes a second CCH field;
send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request; and
establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.

8. The apparatus of claim 7 , wherein the first CCH field and the second CCH are sent on odd subcarriers and the first training field and the second training field are sent on even subcarriers.

9. The apparatus of claim 7 , further comprising:
receiving a third connection request from the second computing device;
determining a third training field associated with the third connection request;
sending the third training field in sequence with the first training field to the second computing device; and
establishing a third spatial channel stream with the second computing device.

10. The apparatus of claim 9 , wherein the first training field, the second training field and the third training field are sent in a high efficiency throughput preamble.

11. The apparatus of claim 7 , wherein establishing the first spatial channel stream is based at least in part on a channel state information (CSI) associated with the second computing device.

12. The apparatus of claim 7 , wherein the first computing device is an access point operating in multi-user multi-input and multi-output (MU-MIMO) wireless system.

13. A non-transitory computer-readable medium storing computer-executable instructions which, when executed by a processor, cause the processor to perform operations comprising:
receiving a first connection request from a second computing device, and a second connection request from a third computing device;
determining a first training field associated with the first connection request and a second training field associated with the second request, wherein the first training field includes a first control channel (CCH) field and the second training field includes a second CCH field;
sending the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request; and
establishing a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.

14. The non-transitory computer-readable medium of claim 13 , wherein the first CCH field and the second CCH are sent on odd subcarriers and the first training field and the second training field are sent on even subcarriers.

15. The non-transitory computer-readable medium of claim 13 , further comprising:
receiving a third connection request from the second computing device;
determining a third training field associated with the third connection request;
sending the third training field in sequence with the first training field to the second computing device; and
establishing a third spatial channel stream with the second computing device.

16. The non-transitory computer-readable medium of claim 15 , wherein the first training field, the second training field and the third training field are sent in a high efficiency throughput preamble.

17. The non-transitory computer-readable medium of claim 13 , wherein establishing the first spatial channel stream is based at least in part on a channel state information (CSI) associated with the second computing device.

18. The non-transitory computer-readable medium of claim 13 , wherein the first computing device is an access point operating in multi-user multi-input and multi-output (MU-MIMO) wireless system.

Assignees

• Li Qinghua
• Chen Xiaogang
• Niu Huaning
• Stacey Robert
• Zhu Yuan
• Lin Xintian E
• Intel Corp

Inventors

• Li Qinghua
• Chen Xiaogang
• Niu Huaning
• Stacey Robert
• Zhu Yuan
• Lin Xintian E

Classifications

• H04L5/0025

  Spatial division following the spatial signature of the channel · CPC title

• H04L27/2613

  Structure of the reference signals · CPC title

• G06N99/005

  Physics · mapped topic

• H04W72/00

  Local resource management · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title