Operation method and radio device for controlling power switch of radio based on moving speed

• US 8,559,902 B2
• Filed: 10/29/2010
• Issued: 10/15/2013
• Est. Priority Date: 08/06/2010
• Status: Active Grant

• Current Assignee: National Taiwan University (Government of The Republic of China)
• Original Assignee: National Taiwan University (Government of The Republic of China)
• Inventors: Huang, Polly, Lin, Po-Yen, Chen, Ling-Jyh, Huang, Jyh-How
• Primary Examiner(s): Yun, Eugene
• Application Number:
  US12/915,841
• Publication Number:
  US 20120034877A1
• Time in Patent Office: 1,082 Days
• Field of Search: 455/67.11, 455/67.14, 455/569.2, 455/456.1, 455/456.2, 455/456.3, 455/575.9, 455/572, 455/571, 455/441, 455/238.1, 455/574
• US Class Current: 455/238.1
• CPC Class Codes: H04M 1/72454 according to context-related or environment-related conditions
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion telephones including GPS signal receivers H04M2250/10
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 52/282 taking into account the speed of the mobile
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An operation method and a radio device for controlling a power switch of a radio based on moving speed. The radio device includes a speed estimator and an operator. The speed estimator is used for estimating the moving speed of the radio device, and the operator is used for comparing the moving speed of the radio device with a speed threshold value so as to turn on/off the power switch of the radio device. The power switch of the radio device can be controlled based on the moving speed so as to decrease the time the radio device stays on, thus reducing the power consumption of the radio device.

Claims

1. An operation method for controlling a power switch of a radio based on moving speed, comprising the steps of:

estimating a moving speed of a radio device having a radio module selectively energized by a power switch therefor; and

comparing said moving speed with a speed threshold value adaptively set according to a movement history of said radio device, wherein if said moving speed is below said speed threshold value, the power switch of said radio module is turned on and a neighboring radio device sensing operation is executed;

if said moving speed of said radio device is above said speed threshold value, the power switch of said radio module is turned off, wherein, responsive to a neighboring radio device being sensed, said radio device exchanges or transfers at least one data message with the neighboring radio device, and said radio device will be prevented from exchanging or transferring the data message with the neighboring radio device when the power switch of said radio module is turned off.

2. The operation method according to claim 1, further comprising the steps of:

commanding said radio device to exchange at least one data message with a neighboring radio device.

3. The operation method according to claim 2, wherein each of said radio devices exchanges data with others through an opportunistic network.

4. The operation method according to claim 2, wherein said data message comprises at least one position information, at least one notification information, at least one traffic information, or other type of information.

5. The operation method according to claim 4, wherein said radio device comprises a navigation element, used for locating said radio device to generate said position information.

6. The operation method according to claim 1, wherein said radio device comprises a speed estimator, used for estimating said moving speed of said radio device.

7. The operation method according to claim 6, wherein said speed estimator is an accelerometer, a pedometer, or a sensor with detectable displacement speed.

8. The operation method according to claim 1, wherein said radio device is attached to a user or a vehicle, and said moving speed is the walking speed of the user or the traveling speed of the vehicle.

9. A radio device for controlling a power switch of a radio based on moving speed, comprising:

a speed estimator, used for estimating a moving speed of a radio device, said radio device having a radio module selectively energized by a power switch therefor; and

an operator, connected to said speed estimator, used for comparing said moving speed with a speed threshold value adaptively set according to a movement history of said radio device to turn on/off the power switch of said radio module, wherein the power switch of said radio module is turned off when said moving speed is above said speed threshold value, and the power switch of said radio module is turned on and a neighboring radio device sensing operation is executed when said moving speed is below said speed threshold value, wherein, responsive to a neighboring radio device being sensed, said radio device exchanges or transfers at least one data message with the sensed neighboring radio device, and said radio device will be prevented from exchanging or transferring the data message with the neighboring radio device when the power switch of said radio is turned off.

10. The radio device according to claim 9, further comprising a recorder, used for recording said speed threshold value and at least one data message, and connected to said operator, wherein said radio device exchanges said at least one data message with a neighboring radio device when said radio device is turned on.

11. The radio device according to claim 10, wherein each radio device exchanges data with others through an opportunistic network.

12. The radio device according to claim 10, wherein said data message comprises at least one position information, at least one notification information, at least one traffic information, or other type of information.

13. The radio device according to claim 12, wherein said device comprises a navigation element, used for locating said radio device to generate said position information.

14. The radio device according to claim 9, wherein said speed estimator is an accelerometer, a pedometer, or a sensor with detectable displacement speed.

15. The radio device according to claim 9, wherein said radio device is attached to a user or a vehicle, and said moving speed is the walking speed of the user or the traveling speed of the vehicle.