Adjusting a duty cycle of wireless transmissions

• US 9,414,330 B2
• Filed: 05/23/2012
• Issued: 08/09/2016
• Est. Priority Date: 05/23/2012
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Lagnado, Isaac
• Primary Examiner(s): Wendell, Andrew
• Application Number:
  US14/394,482
• Publication Number:
  US 20150072721A1
• Time in Patent Office: 1,539 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/102 Power radiated at antenna
• CPC Class Codes: H04W 52/28 using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A duty cycle of wireless transmissions of the electronic device is adjusted based on wireless transmission activity. The adjusting considers the electronic device to be idle if the electronic device wirelessly transmits at a power level less than a non-zero power threshold.

Claims

1. A method comprising:

detecting, by an electronic device comprising a processor, at least one physical characteristic associated with the electronic device, the at least one physical characteristic comprising proximity of the electronic device to a user;

monitoring, by the electronic device, wireless transmission activity of an electronic device during a given time interval;

computing, by the electronic device, a measure of radiation exposure based on the monitored wireless transmission activity;

determining, based on the computed measure of radiation exposure, whether a radiation-related threshold will be violated; and

in response to detecting the at least one physical characteristic comprising the proximity of the electronic device to the user, adjusting, by the electronic device, a duty cycle of wireless transmissions of the electronic device based on the monitored wireless transmission activity and determining that the radiation-related threshold will be violated, where the adjusting considers the electronic device to be idle if the electronic device wirelessly transmits at a power level less than a non-zero power threshold.

2. The method of claim 1, wherein computing the measure is based on a power level of a given wireless transmission and a time duration of the given wireless transmission.

3. The method of claim 1, wherein adjusting the duty cycle of wireless transmissions comprises varying an amount of time of active wireless transmissions relative to an amount of time of the electronic device being idle, within a predefined time interval.

4. The method of claim 1, wherein the at least one physical characteristic further comprises an orientation of the electronic device.

5. The method of claim 1, wherein computing the measure of radiation exposure is based on determining when the electronic device is actively transmitting wireless signals at a power level above the non-zero power threshold, wherein computing the measure of radiation exposure does not consider transmissions of wireless signals at a non-zero power level less than the non-zero power threshold.

6. The method of claim 1, wherein the proximity of the electronic device to the user comprises the electronic device being within a predefined distance from the user.

7. The method of claim 1, wherein computing the measure of radiation exposure is based on assigning different weights to different transmitted data units, the different weights comprising a first weight assigned to a first data unit of the different transmitted data units responsive to the electronic device being in a first orientation, and a second, different weight assigned to a second data unit of the different transmitted data units responsive to the electronic device being in a second, different orientation.

8. An electronic device comprising:

a sensor to detect a physical characteristic associated with the electronic device, the physical characteristic comprising a proximity of the electronic device to a user; and

at least one processor to;

compute a measure of radiation exposure based on monitored wireless transmission activity of the electronic device;

determine, based on the computed measure of radiation exposure, whether a radiation-related threshold will be violated; and

in response to detecting the physical characteristic comprising the proximity of the electronic device to the user, trigger performance of a duty cycle adjustment procedure that adjusts a duty cycle of wireless transmissions from the electronic device based on determining that the radiation-related threshold will be violated.

9. The electronic device of claim 8, wherein the detected physical characteristic further includes an orientation of the electronic device.

10. The electronic device of claim 8, wherein adjusting the duty cycle includes varying an amount of time the electronic device is active in wireless transmission relative to an amount of time the electronic device is idle, in a predefined time interval.

11. The electronic device of claim 8, wherein the duty cycle adjustment procedure comprises assigning different weights to data units transmitted at corresponding different power levels,

where adjusting the duty cycle of wireless transmissions from the electronic device is based on the weights.

12. The electronic device of claim 11, wherein the duty cycle adjustment procedure further includes monitoring the wireless transmission activity of the electronic device within a given time interval, wherein the data units are included in the wireless transmission activity.

13. The electronic device of claim 11, wherein the at least one processor is to further compute the measure of radiation exposure based on the assigned weights.

14. The electronic device of claim 8, wherein the at least one processor is to disable the duty cycle adjustment procedure in response to detecting that the electronic device is not in the proximity to the user.

15. The electronic device of claim 14, wherein the proximity of the electronic device to the user comprises the electronic device being within a predefined distance from the user, and the detecting is based on an output of a proximity sensor.

16. The electronic device of claim 8, wherein the computing of the measure of radiation exposure is based on assigning different weights to different transmitted data units, the different weights comprising a first weight assigned to a first data unit of the different transmitted data units responsive to the electronic device being in a first orientation, and a second, different weight assigned to a second data unit of the different transmitted data units responsive to the electronic device being in a second, different orientation.

17. An article comprising at least one non-transitory machine readable storage medium storing instructions that upon execution cause an electronic device to:

detect a proximity of the electronic device to a user;

monitor wireless transmission activity of the electronic device during a given time interval;

compute a measure of radiation exposure based on the monitored wireless transmission activity of the electronic device;

determine, based on the computed measure of radiation exposure, whether a radiation-related threshold will be violated; and

in response to detecting the proximity of the electronic device to the user, reduce a duty cycle of wireless transmissions of the electronic device based on determining that the radiation-related threshold will be violated, where the adjusting considers the electronic device to be idle if the electronic device wirelessly transmits at a non-zero power level less than a non-zero power threshold.

18. The article of claim 17, wherein the proximity of the electronic device to the user comprises the electronic device being within a predefined distance from the user, and the detecting is based on an output of a proximity sensor.

19. The article of claim 17, wherein computing the measure of radiation exposure is based on assigning different weights to different transmitted data units, the different weights comprising a first weight assigned to a first data unit of the different transmitted data units responsive to the electronic device being in a first orientation, and a second, different weight assigned to a second data unit of the different transmitted data units responsive to the electronic device being in a second, different orientation.