Method and system for shedding load in physiological signals processing

• US 7,840,676 B2
• Filed: 01/30/2007
• Issued: 11/23/2010
• Est. Priority Date: 01/30/2007
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Goddeau, David, Thong, Jean-Manuel Van, Bar-or, Amir, Kontothanassis, Leonidas
• Primary Examiner(s): BAROT, BHARAT
• Application Number:
  US11/699,647
• Publication Number:
  US 20080183847A1
• Time in Patent Office: 1,393 Days
• Field of Search: 709202-205, 709223-226, 718/102, 718/105
• US Class Current: 709/226
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/361 Detecting fibrillation
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• 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

Abstract

A method for shedding signal load in a network having a plurality of devices is disclosed herein. The method comprises computer-implemented steps of (a) issuing a load-shedding policy, where the policy includes (i) fraction f of the signal to be discarded; (ii) device D where fraction f of the signal is to be discarded; and (iii) pattern P of discarding fraction f of the signal; (b) transmitting the issued load-shedding policy to device D; and (c) discarding portions of the signal at device D according to pattern P until fraction f of the signal is discarded.

Claims

1. A method for shedding signal load in a network having a plurality of devices, said method comprising computer-implemented steps:

(a) issuing a load-shedding policy by a computer, said policy including;

fraction f of the signal to be discarded;

device D where fraction f of the signal is to be discarded; and

pattern P of discarding fraction f of the signal;

(b) transmitting the issued load-shedding policy from the computer to device D; and

(c) discarding portions of the signal at device D according to pattern P until fraction f of the signal is discarded, device D being at least one of the plurality of devices;

wherein each of the plurality of devices is a data-collecting device or a data-aggregating device, separate from the computer.

2. The method of claim 1, wherein the signal includes data points.

3. The method of claim 2, wherein fraction f is determined as a fraction of the data points to be discarded.

4. The method of claim 2, wherein the signal includes packets.

5. The method of claim 4, wherein pattern P includes discarding random packets.

6. The method of claim 4, wherein pattern P includes discarding every n-th packet, where n is an integer.

7. The method of claim 2, wherein pattern P includes discarding portions of the signal of pre-determined duration T.

8. The method of claim 1, wherein each of the plurality of devices is a physiological monitoring device and the signal is a physiological signal.

9. The method of claim 8, wherein the physiological signal is an EKG signal, and any combination of steps (a), (b), and (c) is computer-implemented.

10. In a network formed of a plurality of devices, a computer-implemented method for load-shedding a signal that includes data points, said method comprising:

(a) issuing a load-shedding policy by a computer, said policy including;

fraction f of the data points to be discarded;

device D where fraction f of the signal is to be discarded; and

time duration T of the discarded portions of the signal;

(b) transmitting the issued load-shedding policy from the computer to device D, device D being at least one of the plurality of devices; and

(c) discarding portions of the signal having time duration T at device D until fraction f of the data points is discarded;

wherein each of the plurality of devices is a data-collecting device or a data-aggregating device, separate from the computer.

11. A computer system for shedding signal load in a network including a plurality of devices, said system comprising:

(a) policy issuing means for issuing a load-shedding policy, said policy including;

fraction f of the signal to be discarded;

device D where fraction f of the signal is to be discarded; and

pattern P of discarding fraction f of the signal; and

(b) transmitting means for transmitting the issued load-shedding policy to device D, device D being at least one of the plurality of devices;

wherein each of the plurality of devices is a data-collecting device or a data-aggregating device, separate from the policy issuing means.

12. The computer system of claim 11, wherein the signal includes data points.

13. The computer system of claim 12, wherein the policy issuing means determines fraction f as a fraction of the data points to be discarded.

14. The computer system of claim 12, wherein the signal includes packets.

15. The computer system of claim 14, wherein the policy issuing means issues the policy whereby P includes discarding random packets.

16. The computer system of claim 14, wherein the policy issuing means issues the policy whereby pattern P includes discarding every n-th packet, where n is an integer.

17. The computer system of claim 12, wherein the policy issuing means issues the policy whereby pattern P includes discarding portions of the signal of pre-determined duration T.

18. The computer system of claim 11, further including:

data storage and processing means.

19. The computer system of claim 18, wherein the signal is a physiological signal.

20. The computer system of claim 19, wherein the physiological signal is an EKG signal.

21. A computer system for load-shedding a signal that includes data points in a network that includes a plurality of devices, said system comprising:

(a) policy issuing means for issuing a load-shedding policy, said policy defining;

fraction f of the data points to be discarded;

device D where fraction f of the signal is to be discarded; and

time duration T of the discarded portions of the signal;

(b) transmitting means for transmitting the issued load-shedding policy to device D, device D being at least one of the plurality of devices;

wherein the policy issuing means issues a policy in which portions of the signal having time duration T are discarded at device D until fraction f of the data points is discarded, and wherein each of the plurality of devices is a data-collecting device or a data-aggregating device, separate from the policy issuing means.