METHOD AND APPARATUS FOR PERFORMING ACCESS CONTROL FOR WLAN INTERWORKING IN WIRELESS COMMUNICATION SYSTEM

• US 20170201939A1
• Filed: 07/27/2015
• Published: 07/13/2017
• Est. Priority Date: 07/30/2014
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Jaewook, LEE, Youngdae, JUNG, Sunghoon
• Granted Patent: US 10,111,166 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0865 of different Radio Access Technologies [RATs], e.g. LTE or WiFi
• CPC Class Codes: H04W 28/0925 using policies
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method and apparatus for performing access control for wireless local area network (WLAN) interworking in a wireless communication system is provided. A user equipment (UE) receives access class barring information for a traffic steered from a WLAN to 3rd generation partnership project (3GPP) long-term evolution (LTE) from a network, and performs access barring check for the traffic steered from the WLAN to the 3GPP LTE using the received access class barring information. If a cell is not barred according to the access barring check, the UE transmits a radio resource control (RRC) connection request message to the network.

Claims

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

receiving access class barring information for a traffic steered from a wireless local area network (WLAN) to 3rd generation partnership project (3GPP) long-term evolution (LTE) from a network;

performing access barring check for the traffic steered from the WLAN to the 3GPP LTE using the received access class barring information; and

transmitting a radio resource control (RRC) connection request message to the network, if a cell is not barred according to the access barring check.

2. The method of claim 1, wherein the access class barring information for the traffic steered from the WLAN to the 3GPP LTE is received via broadcast signaling.

3. The method of claim 1, wherein the access class barring information for the traffic steered from the WLAN to the 3GPP LTE includes an access class barring factor and an access class barring time.

4. The method of claim 1, if the UE has to establish an RRC connection for mobile terminating (MT) calls at the same time, further comprising performing access barring check corresponding to the MT calls.

5. The method of claim 1, if the UE has to establish an RRC connection for emergency calls at the same time, further comprising performing access barring check corresponding to the emergency calls.

6. The method of claim 1, wherein access barring check for the traffic steered from the WLAN to the 3GPP LTE is performed only, if the UE has to establish an RRC connection for mobile originating (MO) calls at the same time.

7. The method of claim 1, wherein access barring check for the traffic steered from the WLAN to the 3GPP LTE is performed only, if the UE has to establish an RRC connection for MO signaling at the same time.

8. The method of claim 1, wherein access barring check for the traffic steered from the WLAN to the 3GPP LTE is performed only, if the UE has to establish an RRC connection for MO circuit-switched (CS) fallback at the same time.

9. The method of claim 1, wherein access barring check for the traffic steered from the WLAN to the 3GPP LTE is performed only, if the UE has to establish an RRC connection at the same time and extended access barring (EAB) is applicable.

10. A user equipment (UE) comprising:

a memory;

a transceiver; and

a processor coupled to the memory and the transceiver, and configured to;

control the transceiver to receive access class barring information for a traffic steered from a wireless local area network (WLAN) to 3rd generation partnership project (3GPP) long-term evolution (LTE) from a network;

perform access barring check for the traffic steered from the WLAN to the 3GPP LTE using the received access class barring information; and

control the transceiver to transmit a radio resource control (RRC) connection request message to the network, if a cell is not barred according to the access barring check.

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

receiving radio access network (RAN) assistance information, which includes an indication indicating whether access class barring (ACB) can be skipped or not for a traffic steered from a wireless local area network (WLAN) to 3rd generation partnership project (3GPP) long-term evolution (LTE), from a network; and

skipping ACB for the traffic steered from the WLAN to the 3GPP LTE according to the received indication.

12. The method of claim 11, wherein the traffic steered from the WLAN to the 3GPP LTE corresponds to at least one of mobile originating (MO) calls, MO signaling, mobile terminating (MT) calls, emergency calls, circuit-switched fallback or delay tolerant access.

13. The method of claim 11, wherein the RAN assistance information is provided via at least one of broadcast signaling or dedicated signaling.