Energy efficient staggered short transmissions (SST) protocol for wireless sensor networks (WSN)

• US 9,788,224 B2
• Filed: 04/26/2013
• Issued: 10/10/2017
• Est. Priority Date: 05/03/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Emami, Shahriar
• Primary Examiner(s): Chung, Hoon J
• Application Number:
  US13/872,002
• Publication Number:
  US 20130294308A1
• Time in Patent Office: 1,628 Days
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An embodiment of wireless communication in a wireless sensor network (WSN) comprises selecting amount of information transmission from a sensor node utilizing a transmission parameter, wherein the transmission parameter indicates the amount of sensed information to discard from a transmission. Sensed information from a sensor node is transmitted based on the transmission parameter. Discarded sensor information is reconstructed at a receiver based on received sensor information and utilizing information correlation.

Claims

1. A method of wireless communication in a wireless sensor network (WSN) of sensor nodes, comprising:

selecting an amount of measurement sample transmission from a sensor node in the WSN utilizing a transmission parameter, wherein battery energy savings of the sensor node decrease as the transmission parameter increases, and the transmission parameter comprises a phase shift for discarding certain measurement samples in a measurement space matrix from a transmission of measurement samples;

discarding measurement samples from sensed measurement samples based on the transmission parameter; and

transmitting the measurement samples from the sensor node without discarded measurement samples based on the transmission parameter.

2. The method of claim 1, further comprising:

determining the transmission parameter based on a trade-off between energy savings and fidelity of reconstructed estimates for the discarded amount of measurement samples,

wherein the transmission parameter is denoted as P, and 1 out of P measurement samples from a particular sensor node are discarded before the measurement samples are transmitted, where P is a positive integer.

3. The method of claim 2, further comprising:

determining the transmission parameter a priori to the selecting of the amount of measurement sample transmission.

4. The method of claim 2, further comprising:

determining the transmission parameter in real-time.

5. The method of claim 1, further comprising:

each sensor node determining the amount of measurement sample transmission based on a particular transmission parameter and monitoring at least one of a physical condition and an environment condition.

6. The method of claim 5, further comprising:

utilizing a random phase shift for a sensor node to begin discarding selected transmission of measurement samples in the measurement space matrix.

7. The method of claim 1, further comprising:

each sensor node selecting the amount of measurement sample transmission; and

causing estimates for the discarded amount of measurement samples to be reconstructed at a receiver based on the transmitted measurement samples, utilizing measurement sample correlation.

8. The method of claim 1, further comprising:

each sensor node receiving assignment of the amount of measurement sample transmission.

9. The method of claim 8, further comprising:

each sensor node selecting certain measurement samples to discard from the measurement space matrix based on assigned phase shifts.

10. A non-transitory processor-readable medium that includes a program that when executed by a processor performs a method comprising:

selecting an amount of measurement sample transmission from a sensor node in a wireless sensor network (WSN) utilizing a transmission parameter, wherein battery energy savings of the sensor node decrease as the transmission parameter increases, and the transmission parameter comprises a phase shift for discarding certain measurement samples in a measurement space matrix from a transmission of measurement samples;

discarding measurement samples from the transmission of measurement samples; and

transmitting the measurement samples from the sensor node without the discarded amount of measurement samples based on the transmission parameter.

11. The non-transitory processor-readable medium of claim 10, wherein the method further comprising:

determining the transmission parameter based on a trade-off between energy savings and fidelity of reconstructed estimates for the discarded amount of measurement samples,

wherein the transmission parameter is denoted as P, and 1 out of P measurement samples from a particular sensor node are discarded before the measurement samples are transmitted, where P is a positive integer.

12. The non-transitory processor-readable medium of claim 11, wherein the method further comprising:

determining the transmission parameter a priori to the selecting of the amount of measurement samples.

13. The non-transitory processor-readable medium of claim 11, wherein the method further comprising:

determining the transmission parameter in real-time; and

reconstructing estimates for the discarded amount of measurement samples at a receiver based on received measurement samples, utilizing measurement sample correlation.

14. The non-transitory processor-readable medium of claim 10, wherein the method further comprising:

each sensor node determining the amount of measurement sample transmission based on a particular transmission parameter and monitoring at least one of a physical condition and an environment condition.

15. The non-transitory processor-readable medium of claim 14, wherein the method further comprising:

utilizing a random phase shift for a sensor node to begin discarding selected measurement samples in the measurement space matrix.

16. The non-transitory processor-readable medium of claim 10, wherein the method further comprising:

each sensor node selecting the amount of measurement sample transmission; and

reconstructing estimates for the discarded amount of measurement samples at a receiver based on received measurement samples, utilizing measurement sample correlation.

17. The non-transitory processor-readable medium of claim 10, wherein the method further comprising:

each sensor node receiving assignment of the amount of measurement sample transmission.

18. The non-transitory processor-readable medium of claim 17, wherein the method further comprising:

each sensor node selecting certain measurement samples to discard from the measurement space matrix based on assigned phase shifts.

19. A wireless sensor for a wireless sensor network (WSN), comprising:

a monitoring processor configured to monitor one or more sensor nodes and to generate measurement samples; and

a transmitter configured to transmit measurement samples based on a transmission parameter, wherein battery energy savings of the one or more sensor nodes decrease as the transmission parameter increases, and the transmission parameter comprises a phase shift for discarding certain measurement samples in a measurement space matrix from a transmission of the measurement samples.

20. The wireless sensor of claim 19, wherein:

the transmitter is configured to discard measurement samples from the transmission of measurement samples based on the transmission parameter,

estimates for reconstruction of the discarded amount of measurement samples are based on the transmitted measurement samples, utilizing measurement sample correlation; and

the transmission parameter is based on a trade-off between energy savings and fidelity of the reconstructed estimates for the discarded amount of measurement samples.

21. The wireless sensor of claim 19, wherein:

the transmitter utilizes a random phase shift for the wireless sensor node to begin discarding selected measurement samples in the measurement matrix.

22. The wireless sensor of claim 19, wherein:

the wireless sensor node selects certain measurement samples to discard from the measurement space matrix based on an assigned phase shift.