Access control method and apparatus of UE

• US 9,801,122 B2
• Filed: 10/13/2015
• Issued: 10/24/2017
• 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:
  US14/882,171
• Publication Number:
  US 20160037555A1
• Time in Patent Office: 742 Days
• Field of Search: 455515
• 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 by a base station in a communication system, the method comprising:

transmitting a paging message to an extended access barring (EAB) capable terminal, the paging message including information indicating a change of EAB information;

transmitting first system information including scheduling information related to second system information without waiting until a next system information modification period; and

transmitting the second system information including changed EAB information to the EAB capable terminal based on the scheduling information related to the second system information.

2. The method of claim 1, wherein previously received system information in the EAB capable terminal is discarded, if the scheduling information related to the second system information is not included in the first system information.

3. The method of claim 1, wherein the second system information includes first information indicating at least one access class among a plurality of access classes.

4. The method of claim 1, wherein the second system information includes second information indicating a category of terminals for which the changed EAB information is applied.

6. The method of claim 1, wherein the changed EAB information is not applied to the EAB capable terminal, if at least one of an access class information and category information in the second system information does not corresponds to the EAB capable terminal.

5. The method of 4, wherein the category corresponds to one of a first category indicating all terminals, a second category indicating terminals with the exception of 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 the HPLMN and the equivalent PLMN, and terminals related to roaming.

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

a transceiver; and

a controller configured to control the transceiver to;

transmit a paging message to an extended access barring (EAB) capable terminal, the paging message including information indicating a change of EAB information,

transmit first system information including scheduling information related to second system information without waiting until a next system information modification period, and

transmit the second system information including changed EAB information to the EAB capable terminal based on the scheduling information related to the second system information.

8. The base station of claim 7, wherein previously received system information in the EAB capable terminal is discarded, if the scheduling information related to the second system information is not included in the first system information.

9. The base station of claim 7, wherein the second system information includes first information indicating at least one access class among a plurality of access classes.

10. The base station of claim 7, wherein the second system information includes second information indicating a category of terminals for which the changed EAB information is applied.

11. The base station of claim 10, wherein the category corresponds to one of a first category indicating all terminals, a second category indicating terminals with the exception of 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 the HPLMN and the equivalent PLMN, and terminals related to roaming.

12. The base station of claim 7, wherein the changed EAB information is not applied to the EAB capable terminal, if at least one of an access class information and category information in the second system information does not corresponds to the EAB capable terminal.