METHOD AND APPARATUS FOR BACK-OFF ALGORITHM HAVING DIFFERENT RETRY TIME CLASSES

• US 20110296039A1
• Filed: 11/05/2010
• Published: 12/01/2011
• Est. Priority Date: 05/31/2010
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Deu-Ngoc, Joseph Tu-Long, Thompson, Jeremy
• Granted Patent: US 9,706,581 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04W 74/085 collision avoidance
• CPC Class Codes: H04W 76/12 Setup of transport tunnels

Abstract

A method and apparatus for a back-off timer having different retry time classes, the method checking whether a connection establishment attempt for a first service on a connection slot is in a back-off time that equals or exceeds a predetermined threshold; and if yes, allowing a second service access to the connection slot.

Claims

1. A method comprising:

checking, at a mobile device, whether a connection establishment attempt for a first service on a connection slot is in a back-off time that equals or exceeds a predetermined threshold; and

if yes, allowing a second service access to the connection slot.

2. The method of claim 1, wherein the predetermined threshold is configured based on the second service.

3. The method of claim 1, wherein the predetermined threshold is configured by signaling between the mobile device and a network element.

4. The method of claim 1, wherein the predetermined threshold is configurable on the mobile device.

5. The method of claim 1, wherein the connection attempt by the first service attempts to establish a tunnel between the mobile device and a network element.

6. The method of claim 5, wherein the tunnel is a packet data protocol context on a radio access bearer.

7. The method of claim 1, wherein the mobile device reserves the connection slot for the first service if the back-off time is less than the predetermined threshold.

8. The method of claim 1, wherein the second service has a lower priority than the first service.

9. The method of claim 8, wherein the second service is selected from a plurality of services with closed tunnels, the second service having a higher priority than remaining services in the plurality of services.

10. The method of claim 1, wherein the connection establishment request previously failed to establish a connection based on a non-stalling cause.

11. A mobile device comprising:

a processor; and

a communications subsystem,

wherein the processor and communications subsystem cooperate to;

check whether a connection establishment attempt for a first service on a connection slot is in a back-off time that equals or exceeds a predetermined threshold; and

if yes, allow a second service access to the connection slot.

12. The mobile device of claim 11, wherein the predetermined threshold is configured during manufacture of the mobile device.

13. The mobile device of claim 11, wherein the predetermined threshold is configured by signaling between the mobile device and a network element.

14. The mobile device of claim 11, wherein the predetermined threshold is configurable on the mobile device.

15. The mobile device of claim 11, wherein the connection attempt by the first service attempts to establish a tunnel between the mobile device and a network element.

16. The mobile device of claim 15, wherein the tunnel is a packet data protocol context on a radio access bearer.

17. The mobile device of claim 11, wherein the mobile device is configured to reserve the connection slot for the first service if the back-off time is less than the predetermined threshold.

18. The mobile device of claim 11, wherein the second service has a lower priority than the first service.

19. The mobile device of claim 18, wherein the second service is selected from a plurality of services with closed tunnels, the second service having a higher priority than remaining services in the plurality of services.

20. The mobile device of claim 11, wherein the connection establishment request previously failed to establish a connection based on a non-stalling cause.