Method and apparatus for state/mode transitioning

• US 9,467,976 B2
• Filed: 10/05/2010
• Issued: 10/11/2016
• 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): Sheikh, Ayaz
• Assistant Examiner(s): Hsiung, Hai-Chang
• Application Number:
  US12/897,945
• Publication Number:
  US 20110182193A1
• Time in Patent Office: 2,198 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A user equipment implements a method of processing indication messages, such as SCRI (signalling connection release indication) messages. For at least one RRC (radio resource control) state, if the current RRC state of the UE is a result of a previously sent indication, the UE inhibits itself from sending a further indication message.

Claims

1. A method performed by a user equipment (UE), the method comprising:

at the UE, maintaining a count of indication messages with a cause set that have been sent by the UE while in a paging channel state, wherein the indication messages comprise signaling connection release indication messages and each of the indication messages has a cause set to “

UE Requested Packet Switched (PS) Data session end”

;

transmitting an uplink radio link control (RLC) protocol data unit (PDU) by the UE on radio bearer 3 (RB3) or upward; and

resetting the count of the indication messages by the UE responsive to the transmission of the uplink RLC data PDU.

2. The method of claim 1, wherein the paging channel state comprises a CELL_PCH state or a URA_PCH state.

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

4. The method of claim 1, further comprising determining whether a current value of the count is less than a predetermined value.

5. The method of claim 4, further comprising responsive to the determination, sending an indication message with a cause set to UE Requested PS (Packet Switched) Data session end.

6. The method of claim 1, further comprising incrementing, while in the paging channel state, the count to reflect the UE causing an indication message to be sent, each counted indication message having a cause set to UE Requested PS (Packet Switched) Data session end.

7. A user equipment (UE) configured to:

maintain a count of indication messages with a cause set that have been sent by the UE while in a paging channel state, wherein the indication messages comprise signaling connection release indication messages and each of the indication messages has a cause set to “

UE Requested Packet Switched (PS) Data session end”

;

transmit an uplink radio link control (RLC) protocol data unit (PDU) on radio bearer 3 (RB3) or upward; and

reset the count of the indication messages responsive to the transmission of the uplink RLC data PDU.

8. The user equipment of claim 7, wherein the paging channel state comprises a CELL_PCH state or a URA_PCH state.

9. The user equipment of claim 7, further comprising a counter for maintaining the count.

10. The user equipment of claim 7, further configured to determine whether a current value of the count is less than a predetermined value.

11. The user equipment of claim 10, further configured to responsive to the determination, send an indication message with a cause set to UE Requested PS (Packet Switched) Data session end.

12. The user equipment of claim 7, further configured to increment, while in the paging channel state, the count to reflect the UE causing an indication message to be sent, each counted indication message having a cause set to UE Requested PS (Packet Switched) Data session end.

13. A method performed by a user equipment (UE), the method comprising:

at the UE, maintaining a count of indication messages with a cause set that have been sent by the UE while in a paging channel state, wherein the indication messages comprise signaling connection release indication messages and each of the indication messages has a cause set to “

UE Requested Packet Switched (PS) Data session end”

;

entering a more battery intensive radio resource control (RRC) state from the paging channel state; and

resetting the count of the indication messages responsive to entering the more battery intensive RRC state.

14. The method of claim 13, wherein the paging channel state comprises a CELL_PCH state or a URA_PCH state.

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

16. The method of claim 13, further comprising determining whether a current value of the count is less than a predetermined value.

17. The method of claim 16, further comprising responsive to the determination, sending an indication message with a cause set to UE Requested PS (Packet Switched) Data session end.

18. The method of claim 13, further comprising incrementing, while in the paging channel state, the count to reflect the UE causing an indication message to be sent, each counted indication message having a cause set to UE Requested PS (Packet Switched) Data session end.

19. A user equipment (UE) configured to:

maintain a count of indication messages with a cause set that have been sent by the UE while in a paging channel state, wherein the indication messages comprise signaling connection release indication messages and each of the indication messages has a cause set to “

UE Requested Packet Switched (PS) Data session end”

;

enter a more battery intensive radio resource control (RRC) state from the paging channel state; and

reset the count of the indication messages responsive to entering the more battery intensive RRC state.

20. The user equipment of claim 19, wherein the paging channel state comprises a CELL_PCH state or a URA_PCH state.

21. The user equipment of claim 19, further comprising a counter for maintaining the count.

22. The user equipment of claim 19, further configured to determine whether a current value of the count is less than a predetermined value.

23. The user equipment of claim 22, further configured to responsive to the determination, send an indication message with a cause set to UE Requested PS (Packet Switched) Data session end.

24. The user equipment of claim 19, further configured to increment, while in the paging channel state, the count to reflect the UE causing an indication message to be sent, each counted indication message having a cause set to UE Requested PS (Packet Switched) Data session end.