Method and apparatus to prevent RAN (radio access network) overload for legacy networks in a wireless communication system

• US 8,830,828 B2
• Filed: 05/31/2012
• Issued: 09/09/2014
• Est. Priority Date: 05/31/2011
• Status: Active Grant

• Current Assignee: Innovative Sonic Limited
• Original Assignee: Innovative Sonic Limited
• Inventors: Guo, Yu-Hsuan, Ou, Meng-Hui
• Primary Examiner(s): CHAN, SAI MING
• Application Number:
  US13/484,749
• Publication Number:
  US 20120307632A1
• Time in Patent Office: 831 Days
• Field of Search: 370/230, 370/235, 370/447
• US Class Current: 370/230
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04W 28/0205 at the air interface dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0215 based on user or device properties, e.g. MTC-capable devices services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51
• CPC Class Codes: H04W 28/0289 Congestion control load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 48/06 based on traffic conditions

Abstract

A method and apparatus are disclosed to prevent RAN (Radio Access Network) overload for legacy networks in a wireless communication system. In one embodiment, the method comprise initiating a RRC (Radio Resource Control) connection establishment procedure to access a cell. The method further comprises performing an access barring check. The method also comprises extending a barring time autonomously.

Claims

1. A method for a UE (User Equipment) to prevent RAN (Radio Access Network) overload, comprising:

initiating a RRC (Radio Resource Control) connection re-establishment procedure;

selecting a cell during the RRC connection re-establishment procedure, wherein the cell broadcasts EAB (Extended Access Barring) information indicating that EAB should be applied to the UE; and

applying the EAB information for the RRC connection re-establishment procedure.

2. The method of claim 1, wherein the UE is delay tolerant.

3. The method of claim 1, wherein the UE is configured with EAB.

4. The method of claim 1, wherein the UE is in connected mode.

5. The method of claim 1, wherein the UE enters idle mode if the cell broadcasts the EAB information.

6. A method for a UE (User Equipment) to prevent RAN (Radio Access Network) overload, comprising:

Initiating a RRC (Radio Resource Control) connection re-establishment procedure; and

de-prioritizing a cell that broadcasts EAB (Extended Access Barring) information during a cell selection process of the RRC connection re-establishment procedure.

7. The method of claim 6, wherein the UE is delay tolerant.

8. The method of claim 6, wherein the UE is configured with EAB.

9. The method of claim 6, wherein the UE is in connected mode.

10. The method of claim 6, wherein the EAB information indicates that EAB should be applied to the UE.

11. A communication device for a UE (User Equipment) to prevent RAN (Radio Access Network) overload, the communication device comprising:

a control circuit;

a processor installed in the control circuit;

a memory installed in the control circuit and operatively coupled to the processor;

wherein the processor is configured to execute a program code stored in memory to enable the UE to prevent RAN overload by;

initiating a RRC (Radio Resource Control) connection re-establishment procedure;

selecting a cell during the RRC connection re-establishment procedure, wherein the cell broadcasts EAB (Extended Access Barring) information indicating that EAB should be applied to the UE; and

applying the EAB information for the RRC connection re-establishment procedure.

12. The communication device of claim 11, wherein the UE is delay tolerant.

13. The communication device of claim 11, wherein the UE is configured with EAB.

14. The communication device of claim 11, wherein the UE is in connected mode.

15. The communication device of claim 11, wherein the UE enters idle mode if the cell broadcasts the EAB information.

16. A communication device for a UE (User Equipment) to prevent RAN (Radio Access Network) overload, the communication device comprising:

a control circuit;

a processor installed in the control circuit;

a memory installed in the control circuit and operatively coupled to the processor;

wherein the processor is configured to execute a program code stored in memory to enable the UE to prevent RAN overload by;

initiating a RRC (Radio Resource Control) connection re-establishment procedure; and

de-prioritizing a cell that broadcasts EAB (Extended Access Barring) information during a cell selection process of the RRC connection re-establishment procedure.

17. The communication device of claim 16, wherein the UE is delay tolerant.

18. The communication device of claim 16, wherein the UE is configured with EAB.

19. The communication device of claim 16, wherein the UE is in connected mode.

20. The communication device of claim 16, wherein the EAB information indicates that EAB should be applied to the UE.