Method and apparatus for performing access control for WLAN interworking in wireless communication system

• US 10,111,166 B2
• Filed: 07/27/2015
• Issued: 10/23/2018
• 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
• Primary Examiner(s): Patel, Jay P
• Application Number:
  US15/326,023
• Publication Number:
  US 20170201939A1
• Time in Patent Office: 1,184 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,

wherein the access class barring information for the traffic steered from the WLAN to the 3GPP LTE is received via a broadcast signaling, and

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;

if the UE has to establish a radio resource control (RRC) connection for both the traffic steered from the WLAN to the 3GPP LTE and another connection, performing an access barring check only for the traffic steered from the WLAN to the 3GPP LTE or only for the other connection, depending on a type of the other connection,

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

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

3. The method of claim 1, wherein, if the type of the other connection is a newly generated mobile originating call, the UE only performs the access barring check for the traffic steered from the WLAN to the 3GPP LTE.

4. The method of claim 1, wherein, if the type of the other connection is a mobile terminating call, the UE only performs the access barring check for the mobile terminating call.

5. The method of claim 1, wherein, if the type of the other connection is an emergency call, the UE only performs the access barring check for the emergency call.

6. The method of claim 1, wherein, if the type of the other connection is a mobile originating circuit-switched (CS) fallback, the UE only performs access barring check corresponding to the traffic steered from the WLAN to the 3GPP LTE.

7. The method of claim 1, wherein, if the type of the other connection is a newly generated mobile originating call, and if extended access barring (EAB) is applicable, the UE only performs the access barring check for the traffic steered from the WLAN to the 3GPP LTE.

2. 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,

wherein the access class barring information for the traffic steered from the WLAN to the 3GPP LTE is received via a broadcast signaling, and

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;

if the UE has to establish a radio resource control (RRC) connection for both the traffic steered from the WLAN to the 3GPP LTE and another connection, perform an access barring check only for the traffic steered from the WLAN to the 3GPP LTE or only for the other connection, depending on a type of the other connection,

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

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