# US 10,484,930 B2 · Method and apparatus for performing access to cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,930 B2 - Document ID: US10484930B2 - Status: Granted - Kind: B2 - Application number: 16/257,459 - Filed: 2019-01-25 - Published: 2019-06-06 - Granted: 2019-11-19 - Earliest claimed: 2017-05-05 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hyunjung Choe; Youngdae Lee - Web page: https://patentgrep.com/patent/US10484930B2 ## CPC - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities - H04W 48/10: using broadcasted information - H04W 48/16: Discovering, processing access restriction or access information - H04W 48/20: Selecting an access point - H04W 72/51: based on terminal or device properties - H04W 72/56: based on priority criteria - H04W 76/10: Connection setup - H04W 76/25: Maintenance of established connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 4/14: Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD] - H04W 76/50: for emergency connections - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Provided are a method for a user equipment (UE) to perform access to a cell in a wireless communication, and an apparatus supporting the same. The method may include: receiving, from a first system, access control information for the first system; camping on the cell of a second system; mapping the access control information for the first system to access control information for the second system; and performing access to the cell of the second system, based on the mapped access control information for the second system. ## Claims ### Claim 1 A method of performing, by a user equipment (UE), an access attempt to a cell in a wireless communication system, the method comprising: determining a type of access based on a request to access the cell; determining an access category for the request based on the type of access; performing an access barring check for the cell; mapping the access category to an establishment cause based on a mapping table configured for the UE; and based on access to the cell not being barred for the request, transmitting, to a base station of the cell, a message requesting establishment of a radio resource control (RRC) connection, the message comprising the establishment cause mapped from the access category. ### Claim 2 (depends on 1) The method of claim 1, wherein determining the type of access comprises: determining the type of access as related to a type of service or call for the request to access the cell. ### Claim 3 (depends on 1) The method of claim 1, wherein determining the access category for the request comprises: determining the access category as an integer value. ### Claim 4 (depends on 1) The method of claim 1, wherein the establishment cause is related to at least one of mobile-originated (MO) signaling or an emergency signaling. ### Claim 5 (depends on 1) The method of claim 1, wherein determining the access category for the request based on the type of access comprises: determining the access category based on an application that triggers the request to access the cell. ### Claim 6 (depends on 1) The method of claim 1, wherein determining the access category for the request based on the type of access further comprises: determining the access category based on at least one of a type of service or a type of call for the request to access the cell. ### Claim 7 (depends on 6) The method of claim 6, wherein the type of service is at least one of a voice service, a video service, or a short message service (SMS). ### Claim 8 (depends on 6) The method of claim 6, wherein the type of call is at least one of an emergency call or a high priority call. ### Claim 9 (depends on 1) The method of claim 1, wherein determining the access category for the request based on the type of access further comprises: determining the access category based on a configuration of the UE. ### Claim 10 (depends on 9) The method of claim 9, wherein the configuration of the UE relates to a priority level of the UE. ### Claim 11 (depends on 1) The method of claim 1, wherein determining the access category for the request based on the type of access further comprises: determining the access category based on a signaling procedure related to at least one of a non-access stratum (NAS) layer of the UE or an RRC layer of the UE. ### Claim 12 (depends on 1) The method of claim 1, wherein the mapping table is pre-configured by the UE. ### Claim 13 (depends on 1) The method of claim 1, further comprising: receiving the mapping table from the base station. ### Claim 14 (depends on 1) The method of claim 1, further comprising: providing the access category from a non-access stratum (NAS) layer of the UE to an RRC layer of the UE. ### Claim 15 (depends on 1) The method of claim 1, further comprising: providing the establishment cause from a non-access stratum (NAS) layer of the UE to an RRC layer of the UE. ### Claim 16 (depends on 1) The method of claim 1, further comprising: receiving, from the base station, barring information that comprises at least one of a barring factor, a barring time, or a bitmap. ### Claim 17 A user equipment (UE) configured to perform an access attempt to a cell in a wireless communication system, the UE comprising: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising: determining a type of access based on a request to access the cell; determining an access category for the request based on the type of access; performing an access barring check for the cell; mapping the access category to an establishment cause based on a mapping table configured for the UE; and based on access to the cell not being barred for the request, transmitting, to a base station of the cell, a message requesting establishment of a radio resource control (RRC) connection, the message comprising the establishment cause mapped from the access category.