Method and apparatus for back-off algorithm having different retry time classes
View Patent ↗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.
1. A method on a mobile device comprising:
reserving a connection slot for a first service of the mobile device, the reserving preventing other services from using the connection slot;
attempting to establish a connection for the first service on the connection slot;
determining that the connection establishment was unsuccessful;
selecting a back-off time based on a number of unsuccessful connection attempts;
determining whether the back-off time is a short back-off time or a long back-off time based on a threshold, wherein the back-off time is the short back-off time if it is less than the threshold, and the back-off time is the long back-off time if it is greater than the threshold;
if the back-off time is the short back-off time, preventing other services from using the connection slot; and
if the back-off time is the long back-off time, establishing a connection for a second service of the mobile device on the connection slot.
2. The method of claim 1 , wherein the threshold is configured based on the second service, configured by signaling between the mobile device and a network element, or configurable on the mobile device.
3. 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.
4. The method of claim 3 , wherein the tunnel is a packet data protocol context on a radio access bearer.
5. The method of claim 1 , wherein the second service has a lower priority than the first service.
6. The method of claim 5 , 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.
7. The method of claim 1 , wherein the connection establishment request previously failed to establish a connection based on a non-stalling cause.
8. A mobile device comprising:
a processor; and
a communications subsystem,
wherein the processor and communications subsystem cooperate to:
reserve a connection slot for a first service of the mobile device, the reserving preventing other services from using the connection slot;
attempt to establish a connection for the first service on the connection slot;
determine that the connection establishment was unsuccessful;
select a back-off time based on a number of unsuccessful connection attempts;
determine whether the back-off time is a short back-off time or a long back-off time based on a threshold, wherein the back-off time is the short back-off time if it is less than the threshold, and the back-off time is the long back-off time if it is greater than the threshold;
if the back-off time is the short back-off time, prevent other services from using the connection slot; and
if the back-off time is the long back-off time, establish a connection for a second service of the mobile device on the connection slot.
9. The mobile device of claim 8 , wherein the threshold is configured during manufacture of the mobile device, configured by signaling between the mobile device and a network element, or configurable on the mobile device.
10. The mobile device of claim 8 , wherein the connection attempt by the first service attempts to establish a tunnel between the mobile device and a network element.
11. The mobile device of claim 10 , wherein the tunnel is a packet data protocol context on a radio access bearer.
12. The mobile device of claim 8 , wherein the second service has a lower priority than the first service.
13. The mobile device of claim 12 , 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.
14. The mobile device of claim 8 , wherein the connection establishment request previously failed to establish a connection based on a non-stalling cause.
15. A non-transitory computer-readable medium having instructions stored thereon for execution by a processor of a mobile device, the instructions comprising code for:
reserving a connection slot for a first service of the mobile device, the reserving preventing other services from using the connection slot;
attempting to establish a connection for the first service on the connection slot;
determining that the connection establishment was unsuccessful;
selecting a back-off time based on a number of unsuccessful connection attempts;
determining whether the back-off time is a short back-off time or a long back-off time based on a threshold, wherein the back-off time is the short back-off time if it is less than the threshold, and the back-off time is the long back-off time if it is greater than the threshold;
if the back-off time is the short back-off time, preventing other services from using the connection slot; and
if the back-off time is the long back-off time, establishing a connection for a second service of the mobile device on the connection slot.
16. The non-transitory computer-readable medium of claim 15 , wherein the threshold is configured based on the second service, configured by signaling between the mobile device and a network element, or configurable on the mobile device.
17. The non-transitory computer-readable medium of claim 15 , wherein the connection attempt by the first service attempts to establish a tunnel between the mobile device and a network element.