Access control method and apparatus of UE

• US 9,253,710 B2
• Filed: 05/02/2012
• Issued: 02/02/2016
• Est. Priority Date: 05/02/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sangbum, Kim, Soenghun, Jeong, Kyeongin
• Primary Examiner(s): Nguyen, Hai V
• Application Number:
  US13/461,970
• Publication Number:
  US 20120282965A1
• Time in Patent Office: 1,371 Days
• Field of Search: 455/418, 455/515, 370/230, 370/232, 370/328, 370/329
• US Class Current: 1/1
• 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 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method for controlling delay tolerant access of a Machine-Type Communication (MTC) device based on a backoff mechanism is provided. The method includes receiving, at a terminal, a paging message including an access barring information update indicator from a base station, and receiving a System Information Block (SIB) including updated access barring information, the SIB being received regardless of modification periods. The terminal receives the SIB including the updated access barring information immediately without waiting for the arrival of next modification period, resulting in improvement of access barring efficiency.

Claims

1. A method for access by a terminal in a wireless communication system, the method comprising:

receiving a paging message including an indicator indicating a change of access barring information from a base station;

receiving, from the base station, system information block 1 (SIB 1) including scheduling information related to system information including changed access barring information; and

receiving, from the base station, the system information including the changed access barring information without waiting until a next system information modification period according to the received SIB 1.

2. The method of claim 1, further comprising:

acquiring the system information, if the scheduling information related to the system information is included in the SIB 1; and

discarding previously received system information, if the scheduling information related to the system information is not included in the SIB 1.

3. The method of claim 1,

wherein the system information includes first information indicating at least one access class among a plurality of access class and second information indicating the category of terminals for which the changed access barring information is applied.

4. The method of claim 3, wherein the second information is categorized into one of a first category indicating all terminals, a second category indicating terminals with the exception of the terminals served by a home public land mobile network (HPLMN) and an equivalent PLMN, and a third category indicating terminals with exception of the terminals served by HPLMN and an equivalent PLMN, and roaming terminals.

5. The method of claim 3, further comprising:

avoiding to apply the received system information, if the first information and the second information are not correspond to the terminal.

6. A method for supporting an access by a base station in a wireless communication system, the method comprising:

transmitting a paging message including an indicator indicating a change of access barring information to a terminal;

transmitting, to the terminal, system information block 1 (SIB 1) including scheduling information related to system information including changed access barring information; and

transmitting, to the terminal, the system information including the changed access barring information without waiting until a next system information modification period according to the received SIB 1.

7. The method of claim 6,

wherein the scheduling information included in the SIB 1 is used for receiving of the system information by the terminal.

8. The method of claim 6, wherein the system information includes first information indicating at least one access class among a plurality of access class and second information indicating the category of terminals for which the changed access barring information is applied.

9. The method of claim 8, wherein the second information is categorized into one of a first category indicating all terminals, a second category indicating terminals with the exception of the terminals served by a home public land mobile network (HPLMN) and an equivalent PLMN, and a third category indicating terminals with exception of the terminals served by HPLMN and an equivalent PLMN, and roaming terminals.

10. A terminal in a wireless communication system, the terminal comprising:

a transceiver configured to transmit and receive signals to and from a base station; and

a controller configured to control to receive a paging message including an indicator indicating a change of access barring information from a base station, to receive system information block 1 (SIB 1) including scheduling information related to system information including changed access barring information from the base station, and to receive the system information including the changed access barring information without waiting until a next system modification period according to the received SIB 1 from the base station.

11. The terminal of claim 10, wherein the controller controls to acquire the system information, if the scheduling information related to the system information is included in the SIB 1, and to discard previously received system information, if the scheduling information related to the system information is not included in the SIB 1.

12. The terminal of claim 10, wherein the system information includes first information indicating at least one access class among a plurality of access class and second information indicating the category of terminals for which the changed access barring information is applied.

13. The terminal of claim 12, wherein the second information is categorized into one of a first category indicating all terminals, a second category indicating terminals with the exception of the terminals served by a home public land mobile network (HPLMN) and an equivalent PLMN, and a third category indicating terminals with exception of the terminals served by HPLMN and an equivalent PLMN, and roaming terminals.

14. The terminal of claim 12, wherein the controller controls to avoid to apply the received system information, if the first information and the second information are not correspond to the terminal.

15. A base station in a wireless communication system, the base station comprising:

a transceiver configured to transmit and receive signals to and from a terminal; and

a controller configured to control to transmit a paging message including an indicator indicating a change of access barring information to a terminal, to transmit system information block 1 (SIB 1) including scheduling information related to system information including changed access barring information to the terminal, and to transmit the system information including the changed access barring information without waiting until a next system information modification period according to the received SIB 1 to the terminal.

16. The base station of claim 15,

wherein the scheduling information included in the SIB 1 is used for receiving of the system information by the terminal.

17. The base station of claim 15, wherein the system information includes first information indicating at least one access class among a plurality of access class and second information indicating the category of terminals for which the changed access barring information is applied.

18. The base station of claim 17, wherein the second information is categorized into one of a first category indicating all terminals, a second category indicating terminals with the exception of the terminals served by a home public land mobile network (HPLMN) and an equivalent PLMN, and a third category indicating terminals with exception of the terminals served by HPLMN and an equivalent PLMN, and roaming terminals.