Power Control for High Efficiency Wireless Local Area Network

Patent metadata

Field	Value
Publication number	US-2016249303-A1
Application number	US-201514744702-A
Country	US
Kind code	A1
Filing date	Jun 19, 2015
Priority date	Feb 20, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

This disclosure describes methods, device, and systems related to power control. A first device comprising one or more processors and one or more transceiver components may identify a trigger frame received from a second device, the trigger frame comprising one or more fields. The first device may select a resource unit of an operating channel in accordance with Orthogonal Frequency-Division Multiple Access (OFDMA) standard. The first device may measure a power level of a first field of the trigger frame. The first device may determine a transmit power level based at least in part on measuring the power level of the first field. The first device may cause to send to the second device, one or more signals based at least in part on the transmit power level. The methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.

First claim

What is claimed is:

1 . A device, comprising:
a transceiver configured to transmit and receive wireless signals; an antenna coupled to the transceiver; one or more processors in communication with the transceiver; 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:
identify a trigger frame for resource allocations on an operating channel, received from a first device, the trigger frame comprising one or more fields;
measure a power level of a first field of the one or more fields of the trigger frame;
determine a transmit power level based at least in part on the measured power level of the first field; and
cause to send, to the first device, one or more signals at the transmit power level.

2 . The device of claim 1 , wherein the resource allocations are in accordance with Orthogonal Frequency-Division Multiple Access (OFDMA) standard.

3 . The device of claim 1 , wherein to measure the power level includes computer-executable instructions to measure the power level over at least one of one or more frequency bands or a bandwidth of the trigger frame.

4 . The device of claim 1 , wherein the one or more fields include at least one of legacy short training field (L-STF), a legacy long training field (L-LTF), high efficiency short training field (HE-STF), and high efficiency long training field (HE-LTF).

5 . The device of claim 1 , wherein the at least one processor of the one or more processors is further configured to execute the computer-executable instructions to increase the transmit power based at least on one of an out-of-band measurement or a predefined power offset.

6 . The device of claim 1 , wherein the resource allocations are at least one of scheduled resource allocations or random resource allocations.

7 . The device of claim 1 , wherein the at least one processor of the one or more processors is further configured to execute the computer-executable instructions to determine a power level of a channel that is adjacent to the operating channel.

8 . A non-transitory computer-readable medium storing computer-executable instructions which, when executed by a processor, cause the processor to perform operations comprising:
identifying a trigger frame for resource allocations on an operating channel, received from a device, the trigger frame comprising one or more fields; measuring a power level of a first field of the trigger frame; determining a transmit power level based at least in part on the measured power level of the first field; and sending, to the device, one or more signals at the transmit power level.

9 . The non-transitory computer-readable medium of claim 8 , wherein the resource allocations are in accordance with Orthogonal Frequency-Division Multiple Access (OFDMA) standard.

10 . The non-transitory computer-readable medium of claim 8 , wherein measuring the power level includes at least one of measuring the power level over one or more frequency bands or measuring the power level over a bandwidth covered by the trigger frame.

11 . The non-transitory computer-readable medium of claim 8 , wherein the one or more fields include at least one of legacy short training field (L-STF), a legacy long training field (L-LTF), high efficiency short training field (HE-STF), and high efficiency long training field (HE-LTF).

12 . The non-transitory computer-readable medium of claim 8 , wherein the resource allocations are at least one of scheduled resource allocations or random resource allocations.

13 . The non-transitory computer-readable medium of claim 8 , further includes determining a power level of a channel that is adjacent to the operating channel.

14 . An apparatus comprising:
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:
identify a trigger frame for resource allocations on an operating channel, received from a device, the trigger frame comprising one or more fields;
measure a power level of a first field of the one or more fields of the trigger frame;
determine a transmit power level based at least in part on the measured power level of the first field; and
cause to send, to the device, one or more signals at the transmit power level.

15 . The method of claim 14 , wherein the resource allocations are in accordance with Orthogonal Frequency-Division Multiple Access (OFDMA) standard.

16 . The method of claim 14 , wherein measuring the power level includes at least one of measuring the power level over one or more frequency bands or measuring the power level a bandwidth covered by the trigger frame.

17 . The method of claim 14 , wherein the one or more fields include at least one of legacy short training field (L-STF), a legacy long training field (L-LTF), high efficiency short training field (HE-STF), and high efficiency long training field (HE-LTF).

18 . The method of claim 14 , further includes increasing, by the first device, the transmit power based at least on one of an out-of-band measurement or a predefined power offset.

19 . The method of claim 14 , wherein the resource allocations are at least one of scheduled resource allocations or random resource allocations.

20 . The method of claim 14 , further includes determining a power level of a channel that is adjacent to the operating channel.

Assignees

• Kenney Thomas J
• Ghosh Chittabrata
• Azizi Shahrnaz
• Perahia Eldad

Inventors

• Kenney Thomas J
• Ghosh Chittabrata
• Azizi Shahrnaz
• Perahia Eldad

Classifications

• H04W52/248 Primary

  where transmission power control commands are generated based on a path parameter · CPC title

• H04W52/245 Primary

  taking into account received signal strength · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/36

  with a discrete range or set of values, e.g. step size, ramping or offsets · CPC title