Method and apparatus for state/mode transitioning

• US 8,223,697 B2
• Filed: 09/26/2011
• Issued: 07/17/2012
• Est. Priority Date: 11/23/2009
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Dwyer, Johanna Lisa, Carpenter, Paul Marcus
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US13/244,792
• Publication Number:
  US 20120014325A1
• Time in Patent Office: 295 Days
• Field of Search: None
• US Class Current: 370/328
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/32 Release of transport tunnels

Abstract

A user equipment implements a method of processing indication messages, such as SCRI (signalling connection release indication) messages. The user equipment (UE) maintains a count of how many indication messages with a cause set have been sent by the UE while in at least one radio resource control (RRC) state. Various conditions are provided for resetting the count. These include receiving packet switched (PS) data by the UE and transmitting packet switched (PS) data.

Claims

1. A method comprising:

maintaining, at a user equipment (UE), a count of signaling connection release indication (SCRI) messages sent by the UE to a network;

transmitting, from the UE to a network, packet switched (PS) data; and

resetting the count by the UE responsive to transmitting the PS data.

2. The method of claim 1, wherein the UE transmits PS data on radio bearer 5 (RB5) or upwards.

3. The method of claim 1, wherein the transmission of PS data comprises uplink radio link control (RLC) data protocol data units (PDUs).

4. The method of claim 1, wherein the SCRI messages sent by the UE each have a cause set.

5. The method of claim 4, wherein the cause is set to UE Requested PS Data session end.

6. The method of claim 1, wherein the SCRI messages are sent by the UE while in at least one radio resource control (RRC) state.

7. The method of claim 6, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

8. The method of claim 1, wherein maintaining a count comprises using a counter.

9. The method of claim 1, wherein said maintaining includes incrementing the count.

10. A method comprising:

maintaining, at a user equipment (UE), a count of signaling connection release indication (SCRI) messages sent by the UE while in at least one radio resource control (RRC) state to a network, the SCRI messages having a cause set to UE Requested PS Data session end;

transmitting, from the UE to the network, packet switched (PS) data; and

resetting the count by the UE responsive to transmitting the PS data.

11. The method of claim 10, wherein the UE transmits PS data on radio bearer 5 (RB5) or upwards.

12. The method of claim 11, wherein the transmission of PS data comprises uplink radio link control (RLC) data protocol data units (PDUs).

13. The method of claim 12, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

14. The method of claim 13, wherein maintaining a count comprises using a counter.

15. The method of claim 14, wherein said maintaining includes incrementing the count.

16. A user equipment (UE) comprising a processor, configured to:

maintain a count of signaling connection release indication (SCRI) messages sent by the UE to a network;

transmit packet switched (PS) data to a network; and

reset the count responsive to transmitting the PS data.

17. The UE of claim 16, wherein the UE transmits PS data on radio bearer 5 (RB5) or upwards.

18. The UE of claim 16, wherein the transmission of PS data comprises uplink radio link control (RLC) data protocol data units (PDUs).

19. The UE of claim 16, wherein the SCRI messages sent by the UE each have a cause set.

20. The UE of claim 19, wherein the cause is set to UE Requested PS Data session end.

21. The UE of claim 16, wherein the SCRI messages are sent by the UE while in at least one radio resource control (RRC) state.

22. The UE of claim 21, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

23. The UE of claim 16, wherein maintaining a count comprises using a counter.

24. The UE of claim 16, wherein said maintaining includes incrementing the count.

25. A user equipment comprising at least one memory and a processor, configured to:

maintain a count of signaling connection release indication (SCRI) messages sent by the UE while in at least one radio resource control (RRC) state to a network, the SCRI messages having a cause set to UE Requested PS Data session end;

transmit packet switched (PS) data to the network; and

reset the count responsive to transmitting the PS data.

26. The UE of claim 25, wherein the UE transmits PS data on radio bearer 5 (RB5) or upwards.

27. The UE of claim 26, wherein the transmission of PS data comprises uplink radio link control (RLC) data protocol data units (PDUs).

28. The US of claim 27, wherein the at least one RRC state comprises a CELL_PCH state or a URA_PCH state.

29. The UE of claim 28, wherein maintaining a count comprises using a counter.

30. The UE of claim 29, wherein said maintaining includes incrementing the count.