RE-ESTABLISHING A RADIO RESOURCE CONTROL CONNECTION WITH A NON-PREPARED BASE STATION

• US 20100080116A1
• Filed: 09/25/2009
• Published: 04/01/2010
• Est. Priority Date: 09/29/2008
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ulupinar, Fatih, Tenny, Nathan E., Song, Osok, Agashe, Parag A.
• Application Number:
  US12/567,046
• Publication Number:
  US 20100080116A1
• Time in Patent Office: Days
• US Class Current: 370/216
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/36 by user or terminal equipment
• CPC Class Codes: H04W 76/19 Connection re-establishment

Abstract

A method for establishing a radio resource control connection is disclosed. A wireless communication device may establish a radio resource control connection with a first base station. The wireless communication device may send a message to a second base station that requests re-establishment of the radio resource control connection. The wireless communication device may receive a message from the second base station that initiates setup of a new radio resource control connection.

Claims

1. A method for establishing a radio resource control connection, the method being performed by a wireless communication device, the method comprising:

establishing a radio resource control connection with a first base station;

sending a message to a second base station that requests re-establishment of the radio resource control connection; and

receiving a message from the second base station that initiates setup of a new radio resource control connection.

2. The method of claim 1, further comprising releasing existing bearers corresponding to the radio resource control connection in response to receiving the message.

3. The method of claim 1, wherein the wireless communication device does not release existing bearers corresponding to the radio resource control connection in response to receiving the message, and further comprising receiving a message from the second base station that initiates reconfiguration of the new radio resource control connection.

4. The method of claim 1, wherein the message that requests re-establishment of the radio resource control connection is sent to the second base station in response to detecting failure of a radio link with the first base station.

5. The method of claim 1, wherein the message that requests re-establishment of the radio resource control connection is sent to the second base station in response to a decision to handover the wireless communication device from the first base station to the second base station.

6. The method of claim 1, wherein the message that requests re-establishment of the radio resource control connection is an RRCConnectionReestablishmentRequest message, and wherein the message that initiates setup of a new radio resource control connection is an RRCConnectionSetup message.

7. A method for establishing a radio resource control connection, the method being performed by a base station, the method comprising:

receiving a message from a wireless communication device that requests re-establishment of a radio resource control connection; and

sending a message to the wireless communication device that initiates setup of a new radio resource control connection.

8. The method of claim 7, further comprising triggering release of bearers at a core network, wherein the bearers correspond to a radio resource control connection between the wireless communication device and a previous serving base station.

9. The method of claim 7, further comprising establishing new bearers for the new radio resource control connection.

10. The method of claim 7, further comprising retrieving the context of the wireless communication device from a previous serving base station.

11. The method of claim 7, further comprising sending a message to the wireless communication device that initiates reconfiguration of the new radio resource control connection.

12. The method of claim 7, wherein the message that requests re-establishment of the radio resource control connection is an RRCConnectionReestablishmentRequest message, and wherein the message that initiates setup of a new radio resource control connection is an RRCConnectionSetup message.

13. The method of claim 7, wherein the base station is a non-prepared base station that has not received radio resource control configuration information from a previous serving base station.

14. A wireless communication device, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to;

establish a radio resource control connection with a first base station;

send a message to a second base station that requests re-establishment of the radio resource control connection; and

receive a message from the second base station that initiates setup of a new radio resource control connection.

15. The wireless communication device of claim 14, wherein the instructions are also executable to release existing bearers corresponding to the radio resource control connection in response to receiving the message.

16. The wireless communication device of claim 14, wherein the wireless communication device does not release existing bearers corresponding to the radio resource control connection in response to receiving the message, and wherein the instructions are also executable to receive a message from the second base station that initiates reconfiguration of the new radio resource control connection.

17. The wireless communication device of claim 14, wherein the message that requests re-establishment of the radio resource control connection is sent to the second base station in response to detecting failure of a radio link with the first base station.

18. The wireless communication device of claim 14, wherein the message that requests re-establishment of the radio resource control connection is sent to the second base station in response to a decision to handover the wireless communication device from the first base station to the second base station.

19. The wireless communication device of claim 14, wherein the message that requests re-establishment of the radio resource control connection is an RRCConnectionReestablishmentRequest message, and wherein the message that initiates setup of a new radio resource control connection is an RRCConnectionSetup message.

20. A base station, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable by the processor to;

receive a message from a wireless communication device that requests re-establishment of a radio resource control connection; and

send a message to the wireless communication device that initiates setup of a new radio resource control connection.

21. The base station of claim 20, wherein the instructions are also executable to trigger release of bearers at a core network, wherein the bearers correspond to a radio resource control connection between the wireless communication device and a previous serving base station.

22. The base station of claim 20, wherein the instructions are also executable to establish new bearers for the new radio resource control connection.

23. The base station of claim 20, wherein the instructions are also executable to retrieve the context of the wireless communication device from a previous serving base station.

24. The base station of claim 20, wherein the instructions are also executable to send a message to the wireless communication device that initiates reconfiguration of the new radio resource control connection.

25. The base station of claim 20, wherein the message that requests re-establishment of the radio resource control connection is an RRCConnectionReestablishmentRequest message, and wherein the message that initiates setup of a new radio resource control connection is an RRCConnectionSetup message.

26. The base station of claim 20, wherein the base station is a non-prepared base station that has not received radio resource control configuration information from a previous serving base station.

27. A wireless communication device, comprising:

means for establishing a radio resource control connection with a first base station;

means for sending a message to a second base station that requests re-establishment of the radio resource control connection; and

means for receiving a message from the second base station that initiates setup of a new radio resource control connection.

28. The wireless communication device of claim 27, further comprising means for releasing existing bearers corresponding to the radio resource control connection in response to receiving the message.

29. The wireless communication device of claim 27, wherein the wireless communication device does not release existing bearers corresponding to the radio resource control connection in response to receiving the message, and further comprising means for receiving a message from the second base station that initiates reconfiguration of the new radio resource control connection.

30. A base station, comprising:

means for receiving a message from a wireless communication device that requests re-establishment of a radio resource control connection; and

means for sending a message to the wireless communication device that initiates setup of a new radio resource control connection.

31. The base station of claim 30, further comprising means for triggering release of bearers at a core network, wherein the bearers correspond to a radio resource control connection between the wireless communication device and a previous serving base station.

32. The base station of claim 30, further comprising means for establishing new bearers for the new radio resource control connection.

33. The base station of claim 30, further comprising means for retrieving the context of the wireless communication device from a previous serving base station.

34. A computer-program product comprising a computer-readable medium having instructions thereon, the instructions comprising:

code for establishing a radio resource control connection with a first base station;

code for sending a message to a second base station that requests re-establishment of the radio resource control connection; and

code for receiving a message from the second base station that initiates setup of a new radio resource control connection.

35. The computer-program product of claim 34, wherein the instructions further comprise code for releasing existing bearers corresponding to the radio resource control connection in response to receiving the message.

36. The computer-program product of claim 34, wherein the wireless communication device does not release existing bearers corresponding to the radio resource control connection in response to receiving the message, and wherein the instructions further comprise code for receiving a message from the second base station that initiates reconfiguration of the new radio resource control connection.

37. A computer-program product comprising a computer-readable medium having instructions thereon, the instructions comprising:

code for receiving a message from a wireless communication device that requests re-establishment of a radio resource control connection; and

code for sending a message to the wireless communication device that initiates setup of a new radio resource control connection.

38. The computer-program product of claim 37, wherein the instructions further comprise code for triggering release of bearers at a core network, wherein the bearers correspond to a radio resource control connection between the wireless communication device and a previous serving base station.

39. The computer-program product of claim 37, wherein the instructions further comprise code for establishing new bearers for the new radio resource control connection.

40. The computer-program product of claim 37, wherein the instructions further comprise code for retrieving the context of the wireless communication device from a previous serving base station.