WAKEUP-ON-DEMAND APPARATUS AND MEHTOD, SENSOR DEVICE USING THE SAME, AND WAKEUP-ON-DEMAND METHOD OF SENSOR DEVICE

• US 20110140851A1
• Filed: 10/28/2010
• Published: 06/16/2011
• Est. Priority Date: 12/11/2009
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Byung Bog, Jun, Jong Arm, Ruy, Jae Hong, Bae, Myung Nam, Lee, In Hawn, Choi, Byeong Cheol
• Application Number:
  US12/914,394
• Publication Number:
  US 20110140851A1
• Time in Patent Office: Days
• US Class Current: 340/9.1
• CPC Class Codes: H02J 13/00026 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/126 using wireless data transmission

Abstract

A wakeup-on-demand apparatus includes: a wakeup radio receiver (WRR) receiving a first radio signal to detect an address; and a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address.

Claims

1. A wakeup-on-demand apparatus comprising:

a wakeup radio receiver (WRR) receiving a first radio signal to detect an address; and

a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address.

2. The wakeup-on-demand apparatus of claim 1, wherein the WRR comprises:

a start-of-frame-delimiter (SFD) pattern comparator detecting the start of a frame from the first radio signal; and

an address decoder detecting the address from the first radio signal.

3. The wakeup-on-demand apparatus of claim 2, wherein the address decoder operates when the SFD pattern comparator detects the start of the frame from the received first radio signal.

4. The wakeup-on-demand apparatus of claim 2, wherein the WRR provides a signal to operate the MRT when the address decoder detects the address coinciding with the preset address from the first radio signal.

5. A wakeup-on-demand method which uses a wakeup radio receiver (WRR) receiving a first radio signal to detect an address and a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication when the detected address coincides with a preset address, the wakeup-on-demand method comprising:

receiving the first radio signal using the WRR;

detecting the start of a frame from the received first radio signal;

detecting the address from the received first radio signal; and

operating the MRT. 15

6. The wakeup-on-demand method of claim 5, wherein the detecting of the address is performed when the start of the frame is detected from the received first radio signal.

7. The wakeup-on-demand method of claim 5, wherein the WRR provides a signal to perform the operation of the MRT, when an address coinciding with the preset address is detected from the received first radio signal.

8. A wakeup-on-demand sensor device comprising:

a sensor sensing a predetermined phenomenon;

a wakeup radio receiver (WRR) receiving a first radio signal to detect an address;

a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address; and

a micro controller unit (MCU) controlling the MRT.

9. The wakeup-on-demand sensor device of claim 8, wherein the WRR comprises:

a start-of-frame-delimiter (SFD) pattern comparator detecting the start of a frame from the first radio signal; and

an address decoder detecting the address from the first radio signal.

10. The wakeup-on-demand sensor device of claim 9, wherein the address decoder operates when the SFD pattern comparator detects the start of the frame from the received first radio signal.

11. The wakeup-on-demand sensor device of claim 9, wherein the WRR provides a signal to operate the MRT when the address decoder detects the address coinciding with the preset address from the first radio signal.

12. The wakeup-on-demand sensor device of claim 8, wherein the sensor provides a signal to operate the MCU, when sensing the predetermined phenomenon.

13. The wakeup-on-demand sensor device of claim 8, wherein the MCU operates when receiving a signal to operate the MCU.

14. The wakeup-on-demand sensor device of claim 8, wherein the MCU controls the MRT to operate, when the operation of the MRT is required.

15. The wakeup-on-demand sensor device of claim 8, wherein the sensor device predicts an expected value of service time from when a data packet arrives at the sensor device to when the data packet is successfully transmitted or discarded and a battery lifetime of the sensor device.

16. A wakeup-on-demand method of a sensor device which comprises:

a sensor sensing a predetermined phenomenon;

a wakeup radio receiver (WRR) receiving a first radio signal to detect an address;

a main radio transceiver (MRT) responding to the first radio signal, transmitting and receiving a second radio signal for data communication, when the detected address coincides with a preset address; and

a micro controller unit (MCU) controlling the MRT, the wakeup-on-demand method comprising;

receiving the first radio signal using the WRR;

detecting the start of a frame from the received first radio signal;

detecting the address from the received first radio signal;

detecting, by the sensor, a predetermined phenomenon;

operating the MCU; and

operating the MRT.

17. The wakeup-on-demand method of claim 16, wherein the detecting of the address is performed when the start of the frame is detected from the received first radio signal.

18. The wakeup-on-demand method of claim 16, wherein the WRR provides a signal to perform the operation of the MRT, when the address coinciding with the preset address is detected from the received first radio signal.

19. The wakeup-on-demand method of claim 16, wherein the sensor provides a signal to perform the operation of the MCU, when sensing the predetermined phenomenon. 25

20. The wakeup-on-demand method of claim 16, wherein the MCU operates when receiving a signal to operate the MCU, and controls the MRT to operate, when the operation of the MRT is required.