Method for accessing network by user equipment in wireless communication system and device therefor

Patent metadata

Field	Value
Publication number	US-2021144618-A1
Application number	US-201916961920-A
Country	US
Kind code	A1
Filing date	Jan 7, 2019
Priority date	Jan 12, 2018
Publication date	May 13, 2021
Grant date	—

Abstract

Disclosed are a method for accessing a network by user equipment in a wireless communication system and a device therefor. More specifically, a method for accessing a network by user equipment (UE) in a wireless communication system comprises the steps of: receiving access information regarding access identity and access category values that are valid in a cell in which the UE is camping; selecting, when an access attempt is made to the network, values associated with the access attempt from the access identity and access category values that are valid in the cell on the basis of the access information; and performing an access barring check on the basis of the selected access identity and access category values, thereby enabling access to the network.

First claim

1 . A method for a user equipment (UE) to access a network in a wireless communication system, the method comprising:
receiving access information about valid access identity and access category values in a cell on which the UE camps; based on performing an access attempt to the network, selecting a value related to the access attempt among the valid access identity and access category values in the cell based on the access information; and performing a access barring check based on the selected access identity and access category value.

2 . The method of claim 1 , wherein the access information is included in a system information block (SIB).

3 . The method of claim 2 , wherein the SIB is received by a radio resource control (RRC) layer of the UE.

4 . The method of claim 1 , wherein the access information is received in a registration procedure of the UE.

5 . The method of claim 4 , wherein the registration procedure is performed by a non-access stratum (NAS) layer of the UE.

6 . The method of claim 3 , further comprising transferring, by the RRC layer, the access information to a non-access stratum (NAS) layer of the UE.

7 . The method of claim 6 , wherein the selecting of the value related to the access attempt is performed by the NAS layer.

8 . The method of claim 7 , further comprising transferring, by the NAS layer, the selected value related to the access attempt to the RRC layer.

9 . The method of claim 8 , wherein the access barring check is performed by the RRC layer.

10 . The method of claim 9 , further comprising updating, by the NAS layer, the valid access identity and access category values in the cell, on which the UE camps, based on the access information.

11 . The method of claim 3 , wherein the access information further includes invalid access identity and access category values in the cell.

12 . A user equipment (UE) accessing a network in a wireless communication system, the UE comprising:
a transceiver configured to transmit and receive a radio signal; and a processor configured to control the transceiver, wherein the transceiver is configured to receive access information about valid access identity and access category values in a cell on which the UE camps, wherein the processor is configured to: based on performing an access attempt to the network, select a value related to the access attempt among the valid access identity and access category values in the cell based on the access information; and perform a access barring check based on the selected access identity and access category value.

Assignees

• Lg Electronics Inc

Inventors

• Chun Sungduck

Classifications

• H04W48/02 Primary

  Access restriction performed under specific conditions · CPC title

• H04W48/18

  Selecting a network or a communication service · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W60/04

  using triggered events · CPC title

• H04W48/08

  Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) · CPC title