Granted Patent B2

US 9,571,588 · App. 14/262,436 · Granted Feb 14, 2017

Abstract

Claims (53)

1. A computer-implemented method for user device registration, comprising:

entering a mass-restart mode by an edge device;

sending a first message from the edge device to a user device that is registered through the edge device;

waiting for a second message from the user device;

deleting registration information about the user device from the edge device based on a status of the second message; and

wherein said entering the mass-restart mode by the edge device further comprises:

collecting a registration count at the edge device for at least a first time period;

computing an average registration rate based on the registration count and the at least first time period; and

entering the mass-restart mode by the edge device if the average registration rate exceeds a threshold.

2. The computer-implemented method of claim 1 wherein the first message is an SIP OPTIONS message.

3. The computer-implemented method of claim 1 wherein the status of the second message that triggers the deleting comprises an RST flag set in the second message.

4. The computer-implemented method of claim 1 wherein the status of the second message that triggers the deleting comprises non-receipt of the second message within a time period.

5. The computer-implemented method of claim 1 further comprising:

collecting a second registration count from the edge device for at least a second time period while in the mass-restart mode;

computing a second average registration rate based on the second registration count and the at least second time period; and

exiting the mass-restart mode by the edge device if the second average registration rate is less than a second threshold.

6. A computer-implemented method for user device registration, comprising:

entering a mass-restart mode by an edge device;

sending a first message from the edge device to a user device that is registered through the edge device;

waiting for a second message from the user device;

deleting registration information about the user device from the edge device based on a status of the second message; and wherein entering the mass-restart mode by the edge device further comprises:

collecting a first registration count at the edge device for at least a first time period;

computing a normal average registration rate based on the first registration count and the at least first time period;

collecting a second registration count at the edge device for at least a second time period;

computing a current average registration rate based on the second registration count and the at least second time period; and

entering the mass-restart mode by the edge device if the current average registration rate exceeds the normal average registration rate by a factor.

7. The computer-implemented method of claim 6 further comprising:

collecting a third registration count from the edge device for at least a third time period while in the mass-restart mode;

computing a third average registration rate based on the third registration count and the at least third time period; and

exiting the mass-restart mode by the edge device if the third average registration rate is less than a threshold.

8. An edge device for user device registration, the edge device configured to:

enter a mass-restart mode;

send a first message to a user device that is registered through the edge device;

wait for a second message from the user device;

delete registration information about the user device from the edge device based on a status of the second message; and

wherein being configured to enter the mass-restart mode includes being configured to:

collect a registration count at the edge device for at least a first time period;

compute an average registration rate based on the registration count and the at least first time period; and

enter the mass-restart mode by the edge device if the average registration rate exceeds a threshold.

9. The edge device of claim 8 wherein the first message is an SIP OPTIONS message.

10. The edge device of claim 8 wherein the status of the second message that triggers the deleting comprises an RST flag set in the second message.

11. The edge device of claim 8 wherein the status of the second message that triggers the deleting comprises non-receipt of the second message within a time period.

12. The edge device of claim 8 wherein said edge device is further configured to:

collect a second registration count for at least a second time period while in the mass-restart mode;

compute a second average registration rate based on the second registration count and the at least second time period; and

exit the mass-restart mode if the second average registration rate is less than a second threshold.

13. A computer program product, tangibly embodied in a non-transitory computer readable medium, for user device registration, the computer program product including instructions being operable to cause data processing apparatus to:

collect a registration count at the edge device for at least a first time period;

compute an average registration rate based on the registration count and the at least first time period;

enter a mass-restart mode by an edge device if the average registration rate exceeds a threshold;

send a first message from the edge device to a user device that is registered through the edge device;

wait at the edge device to receive a second message from the user device; and

delete registration information about the user device from the edge device based on a status of the second message.

Assignments (9)