System and method for optimizing power consumption in a wireless device

• US 20060116179A1
• Filed: 11/30/2004
• Published: 06/01/2006
• Est. Priority Date: 11/30/2004
• Status: Abandoned Application

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Vensuna, Sarosh
• Application Number:
  US11/001,540
• Publication Number:
  US 20060116179A1
• Time in Patent Office: Days
• US Class Current: 455/574
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0241 where no transmission is received, e.g. out of range of the transmitter
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Described is a system and a method for optimizing power consumption in a wireless device. The system may include a first computing device which includes a first wireless transducer and a second computing device which includes a second wireless transducer and a power adjusting arrangement. The second transducer wirelessly transmits to the first device first data at a first transmitting power and second data at a second transmitting power. The power adjusting arrangement determines the second transmitting power as a function of the first transmitting power and receipt data; the receipt data corresponding to one of (i) an acknowledgment from the first device of reception of the first data and a signal strength of the received first data and (ii) a lack of acknowledgment from the first device of reception of the first data.

Claims

1. A system, comprising:

a first computing device including a first wireless transducer; and

a second computing device including a second wireless transducer and a power adjusting arrangement,

wherein the second transducer wirelessly transmits to the first device first data at a first transmitting power and second data at a second transmitting power, the power adjusting arrangement determining the second transmitting power as a function of the first transmitting power and receipt data, the receipt data corresponding to one of (i) an acknowledgment from the first device of reception of the first data and a signal strength of the received first data and (ii) a lack of acknowledgment from the first device of reception of the first data.

2. The system according to claim 1, wherein the first computing device is an access point.

3. The system according to claim 2, wherein the second device communicated with a third computing device, via the access point which is connected to a communications network, the third device being connected to the communications network.

4. The system according to claim 1, wherein the second device includes a barcode scanner.

5. The system according to claim 1, wherein the second device is a mobile device.

6. The system according to claim 1, wherein the power adjusting arrangement determines a third transmitting power as a function of the first transmitting power, the second transmitting power, the receipt data and further receipt data, the further receipt data corresponding to one of (i) an acknowledgment from the first device of reception of the second data and a further signal strength of the received second data and (ii) a lack of acknowledgment from the first device of reception of the second data.

7. The system according to claim 1, wherein the second device is at a first distance from the first device when transmitting the first data at the first transmitting power, the second device being at a second distance from the first device when transmitting the second data at the second transmitting power, the power adjusting arrangement determining the second transmitting power as a function of the first transmitting power, the first distance, the second distance and the receipt data.

8. The system according to claim 1, wherein the second transmitting power is determined every predetermined time period.

9. The system according to claim 1, wherein the first transmitting power is a lowest transmitting power of the second device.

10. The system according to claim 1, wherein the first transmitting power is a transmitting power utilized by the second device during a previous wireless communication.

11. The system according to claim 1, wherein when the receipt data includes the lack of acknowledgment, the power adjusting arrangement sets the second transmitting power to be higher than the first transmitting power and wherein when the receipt data includes the acknowledgment and the signal strength, the power adjusting arrangement sets the second transmitting power to be lower than the first transmitting power.

12. The system according to claim 6, wherein when the receipt data includes the lack of acknowledgment and the further receipt data includes the lack of acknowledgment, the power adjusting arrangement sets the third transmitting power to be higher than the second transmitting power and wherein when the receipt data includes the acknowledgment and the signal strength and the further receipt data includes the acknowledgment and the further signal strength, the power adjusting arrangement sets the third transmitting power to be lower than the second transmitting power.

13. The system according to claim 6, wherein when the receipt data includes the acknowledgment and the signal strength and the further receipt data includes the lack of acknowledgment, the power adjusting arrangement sets the third transmitting power to be equal to the first transmitting power.

14. The system according to claim 6, wherein when the receipt data includes the lack of acknowledgment and the further receipt data includes the acknowledgment and the further signal strength, the power adjusting arrangement sets the third transmitting power to be greater than the first transmitting power and less or equal than the second transmitting power.

15. A method, comprising:

transmitting to a first wireless device by a second wireless device first device first data at a first transmitting power;

receiving from the first device by the second device receipt data, the receipt data corresponding to one of (i) an acknowledgment from the first device of reception of the first data and a signal strength of the received first data and (ii) a lack of acknowledgment from the first device of reception of the first data; and

determining a second transmitting power by the second device as a function of the first transmitting power and the receipt;

data.

16. The method according to claim 15, further comprising:

transmitting by the second device to the first device second data at a second transmitting power.

17. The method according to claim 15, wherein the first computing device is an access point.

18. The method according to claim 15, wherein the second device includes a barcode scanner.

19. The method according to claim 16, further comprising:

receiving further receipt data which corresponds to one of (i) an acknowledgment from the first device of reception of the second data and a further signal strength of the received second data and (ii) a lack of acknowledgment from the first device of reception of the second data; and

determining by the second device a third transmitting power as a function of the first transmitting power, the second transmitting power, the receipt data and further receipt data.

20. The method according to claim 15, further comprising:

when the receipt data includes the lack of acknowledgment, increasing the second transmitting power to be higher than the first transmitting power; and

when the receipt data includes the acknowledgment and the signal strength, decreasing the second transmitting power to be lower than the first transmitting power.

21. The method according to claim 19, further comprising:

when the receipt data includes the lack of acknowledgment and the further receipt data includes the lack of acknowledgment, increasing the third transmitting power to be higher than the second transmitting power; and

when the receipt data includes the acknowledgment and the signal strength and the further receipt data includes the acknowledgment and the further signal strength, setting the third transmitting power to be lower than the second transmitting power.

22. The method according to claim 19, further comprising:

when the receipt data includes the acknowledgment and the signal strength and the further receipt data includes the lack of acknowledgment, setting the third transmitting power to be equal to the first transmitting power.

23. The method according to claim 19, further comprising:

when the receipt data includes the lack of acknowledgment and the further receipt data includes the acknowledgment and the further signal strength, setting the third transmitting power to be greater than the first transmitting power and less or equal than the second transmitting power.

24. A device, comprising:

a wireless transducer; and

a power adjusting arrangement,

wherein the transducer wirelessly transmits to a wireless arrangement first data at a first transmitting power and second data at a second transmitting power, the power adjusting arrangement determining the second transmitting power as a function of the first transmitting power and receipt data, the receipt data corresponding to one of (i) an acknowledgment from the wireless arrangement of reception of the first data and a signal strength of the received first data and (ii) a lack of acknowledgment from the first device of reception of the first data.

25. The device according to claim 24, wherein the wireless arrangement is an access point.

26. The device according to claim 24, further comprising:

a barcode scanner.

27. The device according to claim 24, wherein the device is a mobile device.

28. The device according to claim 24, wherein the power adjusting arrangement determines a third transmitting power as a function of the first transmitting power, the second transmitting power, the receipt data and further receipt data, the further receipt data corresponding to one of (i) an acknowledgment from the wireless arrangement of reception of the second data and a further signal strength of the received second data and (ii) a lack of acknowledgment from the wireless arrangement of reception of the second data.