System and method for adjusting a power transmission level for a communication device

• US 9,307,505 B2
• Filed: 03/12/2013
• Issued: 04/05/2016
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Zhu, Lizhong, Zhou, Qingmai, Xu, Jun, Rawlins, Rudy Eugene, Montemurro, Michael Peter, He, Fei
• Primary Examiner(s): Safaipour, Bobbak
• Application Number:
  US13/796,759
• Publication Number:
  US 20140274179A1
• Time in Patent Office: 1,120 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/30 using constraints in the total amount of available transmission power
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system, method and device for adjusting a communication parameter for a network communicating with a communication device are provided. The method comprises: monitoring for a condition relating to a first network that has been in communication with the communication device; and determining whether an adjustment is to be implemented on a communication parameter of a second communication network that has been in communication with the communication device based on the condition and if so, implementing the adjustment to the communication parameter for the second communication network.

Claims

1. A method of adjusting communication parameters for networks communicating with a communication device, the method comprising:

monitoring for a condition relating to a cellular communication network that has been in communication with the communication device; and

in response to determining that an adjustment is to be implemented on a communication parameter of a Wireless Local Area Network (WLAN) that has been in communication with the communication device based on the condition, implementing the adjustment to the communication parameter for the WLAN;

wherein the condition relates to communication frequencies used in the cellular communication network and communication frequencies used by the communication device for communications to the WLAN; and

,

wherein the adjustment comprises reducing a transmission power level for communications sent by the communication device over the WLAN following a back-off scheme to reduce intermodulation distortion at the cellular communication network.

2. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

reducing the transmission power level enables the communication device to comply with a specific absorption rate (SAR) limit for transmissions sent from the communication device.

3. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

a transmission band associated with the cellular communication network determines a level of reduction in the transmission power level.

4. The method of adjusting communication parameters for networks as claimed in claim 1, further comprising:

monitoring for a second condition relating to the cellular communication network that has been in communication with the communication device; and

in response to determining that a further adjustment is to be made to the communication parameter of the WLAN that has been in communication with the communication device based on the second condition, implementing the further adjustment to the communication parameter for the WLAN.

5. The method of adjusting communication parameters for networks as claimed in claim 4, wherein:

the second condition is a loss of the connection to the cellular communication network; and

the further adjustment comprises increasing the transmission power level for communications sent by the communication device over the WLAN.

6. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

the adjustment further comprises changing a channel for communications sent by the communication device over the WLAN.

7. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

the adjustment further comprises periodically placing the communications sent by the communication device in a sleep mode.

8. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

the communication device is an access point (AP) in the WLAN.

9. The method of adjusting communication parameters for networks as claimed in claim 1, wherein:

the communication device is a station in the WLAN communicating with a second communication device that is an access point (AP) for the WLAN;

data for a first adjustment level for the reduction in the power transmission level is provided to the communication device; and

the communication device selects either the first adjustment level or a second adjustment level as the adjustment for communications sent by the communication device over the WLAN.

10. The method of adjusting communication parameters for networks as claimed in claim 9, wherein:

the communication device selects the greater reduction provided by either the first adjustment level or the second adjustment level as the adjustment for communications sent by the communication device over the WLAN.

11. The method of adjusting communication parameters for networks as claimed in claim 4, wherein:

the second condition is determination of the communication device being at a predetermined location.

12. The method of adjusting communication parameters for networks as claimed in claim 4, wherein:

the second condition is determination of the communication device being in a predetermined orientation.

13. The method of adjusting communication parameters for networks as claimed in claim 1, further comprising:

providing updated data for a first adjustment level for the reduction reflecting a further adjustment level conforming to a new regulatory requirement.

14. A system for adjusting communication parameters for networks communicating with a communication device, the system comprising:

a processor;

a memory module for storing instructions for execution on the processor; and

a monitoring module for providing instructions for execution on the processor to monitor for a condition relating to a cellular communication network that has been in communication with the communication device; and

in response to determination an adjustment is to be made to a communication parameter of a Wireless Local Area Network (WLAN) that has been in communication with the communication device based on a condition, implement the adjustment to the communication parameter for the WLAN;

wherein the condition relates to communication frequencies used in the cellular communication network and communication frequencies used by the device for communications to the WLAN; and

,

wherein the adjustment comprises reducing a transmission power level for communications sent by the communication device over the WLAN following a back-off scheme to reduce intermodulation distortion at the cellular communication network.

15. The system for adjusting communication parameters for networks as claimed in claim 14, wherein:

the reduction in the transmission power level for communications sent by the communication device over the WLAN enables the communication device to comply with a specific absorption rate (SAR) limit for transmissions sent from the communication device; and

a transmission band associated with the cellular network determines a level of reduction in the transmission power level.

16. The system for adjusting communication parameters for networks as claimed in claim 14, wherein the monitoring module provides further instructions for execution on the processor to:

monitor for a second condition relating to the cellular communication network that has been in communication with the communication device; and

in response to a determination that a further adjustment is to be made to the communication parameter of the WLAN that has been in communication with the communication device based on the second condition, implement the further adjustment to the communication parameter for the WLAN.

17. The system for adjusting communication parameters for networks as claimed in claim 14, wherein the monitoring module provides further instructions for execution on the processor to:

monitoring for a second condition relating to the cellular communication network that has been in communication with the communication device; and

in response to a determination that a further adjustment is to be made to the communication parameter of the WLAN that has been in communication with the communication device based on the second condition, implementing the further adjustment to the communication parameter for the WLAN.

18. The system for adjusting communication parameters for networks as claimed in claim 17, wherein the monitoring module provides further instructions for execution on the processor to:

the second condition is a loss of the connection to the cellular communication network; and

the further adjustment comprises increasing in the transmission power level for communications sent by the communication device over the WLAN.

19. The system for adjusting communication parameters for networks as claimed in claim 14, wherein:

the adjustment further comprises changing a channel for communications sent by the communication device over the WLAN.

20. The system for adjusting communication parameters for networks as claimed in claim 14, wherein:

the adjustment further comprises periodically placing the communications sent by the communication device in a sleep mode.