# US 11,910,466 B2 · Method and apparatus for operating of network and user equipment supporting mobility of user equipment in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,466 B2 - Document ID: US11910466B2 - Status: Granted - Kind: B2 - Application number: 17/728,689 - Filed: 2022-04-25 - Published: 2022-08-11 - Granted: 2024-02-20 - Earliest claimed: 2017-02-03 - Assignees: Innovative Technology Lab Co., Ltd. - Applicants: Innovative Technology Lab Co., Ltd. - Inventors: Ki Bum Kwon - Web page: https://patentgrep.com/patent/US11910466B2 ## CPC - H04W 36/0033: {with transfer of context information} - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks - H04W 48/20: Selecting an access point - H04W 60/001: {Registration rejection or failure} - H04W 60/04: using triggered events - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 36/08: Reselecting an access point - H04W 48/12: using downlink control channel - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless user device comprises at least one antenna, at least one processor, and memory storing instructions that cause the wireless user device to: receive first radio access network-based notification area (RNA) information, wherein the wireless user device is in a radio resource control (RRC) inactive mode; receive, from a base station, second RNA information different from the first RNA information, and an access barring threshold value, based on a difference between the first RNA information and the second RNA information and based on the access barring threshold value, determine that an RNA update indication is allowed, transmit, to the base station and based on determining that the RNA update indication is allowed, an RNA update indication message, receive an RNA update reject message responsive to the RNA update indication message, and after receiving the RNA update reject message and while a timer is running, start a cell reselection. ## Claims ### Claim 1 A wireless user device comprising: at least one antenna to transmit and receive one or more wireless signals; at least one processor; and memory storing instructions that, when executed by the at least one processor, cause the wireless user device to: receive first radio access network-based notification area (RNA) information, wherein the wireless user device is in a radio resource control (RRC) inactive mode; receive, from a base station: second RNA information different from the first RNA information; and an access barring threshold value; based on a difference between the first RNA information and the second RNA information and based on the access barring threshold value, determine that an RNA update indication is allowed; transmit, to the base station and based on determining that the RNA update indication is allowed, an RNA update indication message; receive an RNA update reject message responsive to the RNA update indication message; and after receiving the RNA update reject message and while a timer is running, start a cell reselection. ### Claim 2 (depends on 1) The wireless user device of claim 1, wherein the instructions, when executed by the at least one processor, cause the wireless user device to transit, based on expiration of the timer, from the RRC inactive mode to an RRC idle mode. ### Claim 3 (depends on 1) The wireless user device of claim 1, wherein the instructions, when executed by the at least one processor, cause the wireless user device to monitor for an RNA update complete message that causes the wireless user device to maintain the RRC inactive mode. ### Claim 4 (depends on 1) The wireless user device of claim 1, wherein the second RNA information comprises at least one of: a cell list; a base station list; a cell identifier; or a base station identifier. ### Claim 5 (depends on 1) The wireless user device of claim 1, wherein the second RNA information is comprised in system information broadcasted from the base station. ### Claim 6 (depends on 1) The wireless user device of claim 1, wherein the RNA update indication message is transmitted via a random access procedure. ### Claim 7 (depends on 1) The wireless user device of claim 1, wherein the instructions, when executed by the at least one processor, cause the wireless user device to determine that the RNA update indication is allowed by: determining, based on a comparison of the access barring threshold value and a random value, that the RNA update indication is allowed. ### Claim 8 A base station comprising: at least one antenna to transmit and receive one or more wireless signals; at least one processor; and memory storing instructions that, when executed by the at least one processor, cause the base station to: transmit, to a wireless user device: radio access network-based notification area (RNA) information; and an access barring threshold value, wherein the wireless user device is in a radio resource control (RRC) inactive mode, and wherein the access barring threshold value is associated with a determination that an RNA update indication is allowed; after transmitting the RNA information, receive, from the wireless user device, an RNA update indication message, wherein the RNA update indication message is based on: the RNA information; and the access barring threshold value; based on the RNA update indication message, determine whether to maintain the RRC inactive mode for the wireless user device; and perform, by the base station: based on a determination to maintain the RRC inactive mode for the wireless user device, transmission, to a node, a request for forwarding context information of the wireless user device; or based on a determination to not maintain the RRC inactive mode for the wireless user device, transmission, to the wireless user device, an RNA update reject message. ### Claim 9 (depends on 8) The base station of claim 8, wherein the instructions, when executed by the at least one processor, cause the base station to transmit the RNA update reject message to cause the wireless user device to transit from the RRC inactive mode to start a cell reselection while a timer is running. ### Claim 10 (depends on 8) The base station of claim 8, wherein the instructions, when executed by the at least one processor, cause the base station to transmit the RNA update reject message to cause the wireless user device to transit, based on expiration of a timer, from the RRC inactive mode to an RRC idle mode. ### Claim 11 (depends on 8) The base station of claim 8, wherein the instructions, when executed by the at least one processor, cause the base station to: after transmission of the request for forwarding context information of the wireless user device, transmit, to the wireless user device, an RNA update complete message. ### Claim 12 (depends on 11) The base station of claim 11, wherein the instructions, when executed by the at least one processor, cause the base station to transmit the RNA update complete message to cause the wireless user device to maintain the RRC inactive mode. ### Claim 13 (depends on 8) The base station of claim 8, wherein the RNA information comprises at least one of: a cell list; a base station list; a cell identifier; or a base station identifier. ### Claim 14 (depends on 8) The base station of claim 8, wherein the RNA information is comprised in system information broadcasted from the base station. ### Claim 15 (depends on 8) The base station of claim 8, wherein the node is comprised in a previous RNA associated with the wireless user device. ### Claim 16 (depends on 8) The base station of claim 8, wherein the node comprises a second base station that stores the context information of the wireless user device. ### Claim 17 (depends on 8) The base station of claim 8, wherein the RNA update indication message is received via a random access procedure. ### Claim 18 (depends on 8) The base station of claim 8, wherein the instructions, when executed by the at least one processor, cause the base station to determine, based on a comparison of the access barring threshold value and a random value, that the RNA update indication is allowed.