Method and device for transponder aided wake-up of a low power radio device

• US 7,613,484 B2
• Filed: 05/24/2006
• Issued: 11/03/2009
• Est. Priority Date: 10/22/2002
• Status: Active Grant

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Lappetel inen, Antti, Ryh nen, Tapani, Hyyryl inen, Jari, Honkanen, Mauri
• Primary Examiner(s): Gesesse; Tilahun
• Application Number:
  US11/440,788
• Publication Number:
  US 20060270382A1
• Time in Patent Office: 1,259 Days
• Field of Search: 455/426.1, 455/41.1, 455/436.2, 455/574, 455/41.2, 455/343.5, 455/343.1, 455/343.2, 455/2, 455/343.3, 455/343.4, 455/564, 455/465, 340/10.33, 340/10.34
• US Class Current: 455/574
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method, software tool, computer program product and low power radio device are provided for transponder aided wake-up and connection set-up by detecting a wake up event in a sleep mode of the low power radio device, putting the radio device into an operative state, transmitting at least one advert message by radio transmission, wherein the low power radio devices put into a passive mode for a predetermined period of time in case no answer is received in response to the at least one transmitted advert message.

Claims

1. A method comprising:

detecting a wake up event through a radio frequency sensor interface of a device,

putting said device into an operative mode including powering a radio frequency communication interface of said device and transmitting at least one advertising message via the radio frequency communication interface in response to detection of said wake up event,

determining whether a response to said at least one advertising message is received at the radio frequency communication interface within a defined time frame; and

putting said device into a passive operation mode including shutting down the radio frequency communication interface for a predetermined period of time, if no response is received within said defined time frame, wherein in said passive mode wake up events are ignored.

2. The method according to claim 1, further comprising:

if a response is received within said defined time frame, setting up a connection and transmitting data in accordance with said response.

3. The method according to claim 1, further comprising:

activating only necessary radio components which are needed to detect said wake up event prior to said detection of said wake up event.

4. The method according to claim 1, further comprising:

putting said radio device into an operative mode after said predetermined period of time has expired.

5. The method according to claim 4, further comprising:

transmitting an advertising message via said radio frequency communication interface after putting said radio device into an operative mode.

6. The method according to claim 1, wherein said detecting said wake up event comprises

receiving energy transmitted from another device in a determined frequency band,

amplifying said received energy, and

detecting the increased energy level after amplifying.

7. The method according to claim 1, wherein said detecting said wake up event comprises

receiving transmitted energy from another device, and

utilizing the received energy for putting said device into an operational mode.

8. The method according to claim 1, further comprising receiving a sensor output from a sensor provided in said radio device said sensor responsive to physical contact of a person or another device, and putting said device into an operative mode responsive to said sensor output.

9. The method according to claim 1, further comprising receiving a sensor output from a sensor provided in said radio device, said sensor responsive to physical contact of a person or another device;

and

putting said device into an operative mode in response to said sensor output.

10. A computer readable medium comprising program code stored thereon, said program code for running on a processor configured to:

detect wake up event through a radio frequency sensor interface of a device,

put said device into an operative mode including powering a radio frequency communication interface of said device in response to detection of said wake up event,

transmit at least one advertising message via the radio frequency communication interface,

determine whether a response to said at least one advertising message is received at the radio frequency communication interface within a defined time frame, and

put said device into a passive operation mode including shutting down the radio frequency communication interface for a predetermined period of time if no response to is received within said defined time frame, wherein in said passive mode wake up events are ignored.

11. The computer readable medium according to claim 10 wherein said program code is downloadable from a server.

12. An apparatus comprising:

a transceiver configured to transmit and receive data wirelessly,

a controller configured to control the operative mode of said apparatus,

a timer, and

a detector configured to detect a wake up event and to notify said controller to put said apparatus into an operative mode if a wake up event is detected,

wherein said transceiver is further configured to transmit at least one advertising message,

wherein said controller is further configured to put said apparatus into a passive mode in response to said transceiver receiving no response to said at least one transmitted advertising message,

wherein said

timer is configured to be active for a predetermined period of time when the apparatus is put into a passive mode, and said controller is further configured to be inactive while said timer is active so as to avoid said apparatus responding to wake up events while in said passive mode.

13. The apparatus according to claim 12, further comprising a data interface connected to said controller, being adapted to exchange data with components connected to said controller.

14. The apparatus according to claim 12, further comprising a battery and a power switch connected to said controller, and said battery, adapted to connect and disconnect a battery to said low power radio device.

15. The apparatus according to claim 14, wherein said apparatus comprises a fully operative mode, a fully powered down mode and at least one partially operative.

16. The apparatus according to claim 12, wherein said controller further comprises at least one sensor responding to physical proximity.

17. The apparatus according to claim 12, wherein said transceiver further comprises an antenna switch connected between said transceiver, said detector and an antenna of said transceiver, being adapted to connect said antenna with said transceiver or with said detector, and wherein said controller is connected to said antenna switch to operate said antenna switch.

18. The apparatus according to claim 17 further comprising an amplifier connected between said antenna and said antenna switch.

19. An apparatus comprising:

means controlling the operative mode of said apparatus,

means for detecting a wake up event and for notifying said means for controlling to put said apparatus into an operative mode in response to detecting said wake up even,

means for transmitting at least one advertising message in response to said apparatus being put into an operative mode, and

means for notifying said means for controlling to put

said apparatus into a passive mode in response to receiving no response to said at least one transmitted advertising message;

wherein said

means for controlling further comprises

timer means for being active for a predetermined period of time when the apparatus is put into a passive mode, and for keeping said means for controlling inactive while said timer means is active so as to avoid said apparatus responding to wake up events while in said passive mode.

20. An apparatus comprising a processor configured to:

detect a wake up event through a radio frequency sensor interface of said apparatus;

put said apparatus into an operative mode including powering a radio frequency communication interface of said apparatus and transmitting at least one advertising message via the radio frequency communication interface in response to detection of said wake up event;

determine whether a response to said at least one advertising message is received at the radio frequency interface within a defined time frame; and

put said apparatus into a passive operation mode including shutting down the radio frequency communication interface for a predetermined period of time, if no response is received within said defined time frame, wherein in said passive mode wakeup events are ignored.