Method and apparatus for controlling network access of UE in wireless communication system

• US 9,648,498 B2
• Filed: 06/22/2015
• Issued: 05/09/2017
• Est. Priority Date: 02/16/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Cho, Song Yean, Lim, Chae Gwon, Lim, Han Na, Choi, Sung Ho, Bae, Beom Sik
• Primary Examiner(s): Pham, Chi H
• Assistant Examiner(s): Huang, Weibin
• Application Number:
  US14/745,852
• Publication Number:
  US 20150289139A1
• Time in Patent Office: 687 Days
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/06 based on traffic conditions
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure

Abstract

A method and an apparatus for controlling network access of a User Equipment (UE) based on the network'"'"'s load and time tolerance (delay tolerance) are provided. A network access method for a terminal in a wireless communication system includes sending an access request message containing a time-tolerant indicator at a predefined time, determining, when a reject message is received, a cause value and a hold time contained in the reject message, and re-sending the access request message after the hold time elapses.

Claims

1. A network access control method by a base station in a wireless communication system, the method comprising:

receiving an overload start message from a mobility management entity (MME), the overload start message indicating that the MME is overloaded;

receiving a first access request message including information on a time-tolerant access from a user equipment (UE), the access request message being an access stratum (AS) message; and

transmitting a reject message containing a wait time for time-tolerant access to the UE,

wherein the wait time is used by the UE for transmitting a second access request message after the wait time elapses.

2. The method of claim 1, wherein the overload start message requests the base station to reject a radio resource connection (RRC) connection request related to the information on the time-tolerant access.

3. The method of claim 1, wherein the wait time indicates a time value that limits a transmission of the second access request message.

4. The method of claim 1, wherein the UE comprises a machine type communication (MTC) device.

5. The method of claim 1, wherein the first access request message comprises a radio resource control (RRC) connection request message.

6. The method of claim 1, wherein the reject message comprises a radio resource control (RRC) connection reject message.

7. A base station for a network access control in a wireless communication system, the base station comprising:

a transceiver configured to transmit and receive a signal; and

at least one processor configured to;

receive an overload start message from a mobility management entity (MME), the overload start message indicating that the MME is overloaded,

receive a first access request message including information on a time-tolerant access from a user equipment (UE), the access request message being an access stratum (AS) message, and

transmit a reject message containing a wait time for time-tolerant access to the UE,

wherein the wait time is used by the UE for transmitting a second access request message after the wait time elapses.

8. The base station of claim 7, wherein the overload start message requests the base station to reject a radio resource connection (RRC) connection request related to the information on the time-tolerant access.

9. The base station of claim 7, wherein the wait time indicates a time value that limits a transmission of the second access request message.

10. The base station of claim 7, wherein the UE comprises a machine type communication (MTC) device.

11. The base station of claim 7, wherein the first access request message comprises a radio resource control (RRC) connection request message.

12. The base station of claim 7, wherein the reject message comprises a radio resource control (RRC) connection reject message.

13. A network access control method by a user equipment (UE) in a wireless communication system, the method comprising:

transmitting a first access request message including information on a time-tolerant access to a base station, the access request message being an access stratum (AS) message;

receiving a reject message containing a wait time for time-tolerant access from the base station; and

transmitting a second access request message after the wait time contained in the reject message elapses,

wherein the reject message is received from the base station, if the base station receives, from a mobility management entity (MME), an overload start message indicating overload of the MME.

14. The method of claim 13, wherein the overload start message requests the base station to reject a radio resource connection (RRC) connection request related to the information on the time-tolerant access.

15. The method of claim 13, wherein the wait time indicates a time value that limits a transmission of the second access request message.

16. The method of claim 13, wherein the UE comprises a machine type communication (MTC) device.

17. The method of claim 13, wherein the first access request message comprises a radio resource control (RRC) connection request message.

18. The method of claim 13, wherein the reject message comprises a radio resource control (RRC) connection reject message.

19. A user equipment (UE) for a network access control in a wireless communication system, the UE comprising:

a transceiver configured to transmit and receive a signal; and

at least one processor configured to;

transmit a first access request message including information on a time-tolerant access to a base station, the access request message being an access stratum (AS) message,

receive a reject message containing a wait time for time-tolerant access from the base station, and

transmit a second access request message after the wait time contained in the reject message elapses,

wherein the reject message is received from the base station, if the base station receives, from a mobility management entity (MME), an overload start message indicating overload of the MME.

20. The UE of claim 19, wherein the overload start message requests the base station to reject a radio resource connection (RRC) connection request related to the information on the time-tolerant access.

21. The UE of claim 19, wherein the wait time indicates a time value that limits a transmission of the second access request message.

22. The UE of claim 19, wherein the UE comprises a machine type communication (MTC) device.

23. The UE of claim 19, wherein the first access request message comprises a radio resource control (RRC) connection request message.

24. The UE of claim 19, wherein the reject message comprises a radio resource control (RRC) connection reject message.

25. An overload control method by a mobility management entity (MME) in a wireless communication system, the method comprising:

determining whether the MME is overloaded; and

transmitting an overload start message to a base station, the overload start message indicating that the MME is overloaded,

wherein the overload start message is used by the base station to reject a first access request message including information on a time-tolerant access from a user equipment (UE) and to transmit a reject message containing a wait time for time-tolerant access to the UE, and

wherein the first access request message is an access stratum (AS) message.

26. The method of claim 25, wherein the wait time is used by the UE for transmitting a second access request message after the wait time elapses.

27. The method of claim 25, wherein the wait time indicates a time value that limits a transmission of the second access request message.

28. The method of claim 25, wherein the UE comprises a machine type communication (MTC) device.

29. The method of claim 25, wherein the first access request message comprises a radio resource control (RRC) connection request message.

30. The method of claim 25, wherein the reject message comprises a radio resource control (RRC) connection reject message.

31. A mobility management entity (MME) for an overload control in a wireless communication system, the MME comprising:

a transceiver configured to transmit and receive a signal; and

at least one processor configured to;

determine whether the MME is overloaded, and

transmit an overload start message to a base station, the overload start message indicating that the MME is overloaded,

wherein the overload start message is used by the base station to reject a first access request message including information on a time-tolerant access from a user equipment (UE) and to transmit a reject message containing a wait time for time-tolerant access to the UE, and

wherein the first access request message is an access stratum (AS) message.

32. The MME of claim 31, wherein the wait time is used by the UE for transmitting a second access request message after the wait time elapses.

33. The MME of claim 31, wherein the wait time indicates a time value that limits a transmission of the second access request message.

34. The MME of claim 31, wherein the UE comprises a machine type communication (MTC) device.

35. The MME of claim 31, wherein the first access request message comprises a radio resource control (RRC) connection request message.

36. The MME of claim 31, wherein the reject message comprises a radio resource control (RRC) connection reject message.