# US 2021/0243723 A1 · Apparatuses, systems, methods, and non-transitory computer readable media for reducing signaling messages between a ran node and a core network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243723 A1 - Document ID: US20210243723A1 - Status: Published application - Kind: A1 - Application number: 17/148,975 - Filed: 2021-01-14 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Philippe Godin; Jean-Michel Pugeat; Anna Sillanpaa - Web page: https://patentgrep.com/patent/US20210243723A1 ## CPC - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 48/02: Access restriction performed under specific conditions - H04W 48/18: Selecting a network or a communication service - H04W 76/15: Setup of multiple wireless link connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system, apparatus, method, and non-transitory computer readable medium for reducing and/or optimizing signaling messages between a radio access network (RAN) node and a core network based on an operation mode of the RAN node may include a core network server including: a memory storing computer readable instructions; and at least one processor configured to execute the computer readable instructions to establish a control plane connection with at least one radio access network (RAN) node, the at least one RAN node supporting at least a first connection mode and a second connection mode, determine a connection mode of the at least one RAN node, and restrict transmission of at least one signaling message to the at least one RAN node based on results of the determining the connection mode of the at least one RAN node. ## Claims ### Claim 1 A core network server, comprising: a memory storing computer readable instructions; and at least one processor configured to execute the computer readable instructions to, receive a control plane connection request message from at least one radio access network (RAN) node, the at least one RAN node supporting at least one of a standalone architecture (SA) connection mode or a non-standalone architecture (NSA) connection mode, the control plane connection request message including an indication indicating that the at least one RAN node is in the SA connection mode or the NSA connection mode; determine a connection mode of the at least one RAN node based on the indication; and set a signaling message configuration value corresponding to the at least one RAN node based on the connection mode of the at least one RAN node. ### Claim 2 (depends on 1) The core network server of claim 1, wherein the at least one processor is further configured to: enable transmission of at least one signaling message based on the connection mode of the at least one RAN node. ### Claim 3 (depends on 1) The core network server of claim 1, wherein the at least one processor is further configured to: restrict transmission of at least one signaling message based on the connection mode of the at least one RAN node. ### Claim 4 (depends on 1) The core network server of claim 1, wherein the at least one processor is further configured to: set the signaling message configuration value corresponding to the at least one RAN node to enable transmission of at least one signaling message to the at least one RAN node in response to the connection mode of the at least one RAN node being the SA connection mode; and set the signaling message configuration value corresponding to the at least one RAN node to restrict transmission of the at least one signaling message to the at least one RAN node in response to the connection mode of the at least one RAN node being the NSA connection mode. ### Claim 5 (depends on 1) The core network server of claim 1, wherein the at least one RAN node is a plurality of RAN nodes; and the at least one processor is further configured to, determine which RAN nodes of the plurality of RAN nodes are in the SA connection mode, and set the signaling message configuration value to enable transmission of at least one signaling message to the RAN nodes of the plurality of RAN nodes that are determined to be in the SA connection mode. ### Claim 6 (depends on 1) The core network server of claim 1, wherein the at least one RAN node is a plurality of RAN nodes; and the at least one processor is further configured to, determine which RAN nodes of the plurality of RAN nodes are in the NSA connection mode, and set the signaling message configuration value to restrict transmission of at least one signaling message to the RAN nodes of the plurality of RAN nodes that are determined to be in the NSA connection mode. ### Claim 7 (depends on 1) The core network server of claim 1, wherein the at least one processor is further configured to: selectively transmit at least one paging message to the at least one RAN node based on results of the determining the connection mode of the at least one RAN node. ### Claim 8 (depends on 7) The core network server of claim 7, wherein the at least one paging message includes information relating to a tracking area associated with the at least one RAN node. ### Claim 9 (depends on 1) The core network server of claim 1, wherein the at least one processor is further configured to: receive the control plane connection request message as an NG Setup Request from the at least one RAN node. ### Claim 10 A radio access network (RAN) node supporting at least one of a standalone architecture (SA) connection mode or a non-standalone architecture (NSA) connection mode, comprising: a memory storing computer readable instructions; and at least one processor configured to execute the computer readable instructions to, set a connection mode of the RAN node, the connection mode being at least the SA connection mode or the NSA connection mode; and transmit at least one control plane connection request message to at least one core network server, the at least one control plane connection request message including an indication of the connection mode of the RAN node, the transmitted at least one control plane connection request message causing the at least one core network server to selectively restrict transmission of at least one signaling message based on the indication of the connection mode. ### Claim 11 (depends on 10) The RAN node of claim 10, wherein the transmitted at least one control plane connection request message indicates that the RAN node is in the SA connection mode, the transmitted at least one control plane connection request message causing the at least one core network server to enable transmission of the at least one signaling message. ### Claim 12 (depends on 10) The RAN node of claim 10, wherein the transmitted at least one control plane connection request message indicates that the RAN node is in the NSA connection mode, the transmitted at least one control plane connection request message causing the at least one core network server to restrict transmission of the at least one signaling message. ### Claim 13 (depends on 10) The RAN node of claim 10, wherein the at least one signaling message includes a paging message. ### Claim 14 (depends on 10) The RAN node of claim 10, wherein the at least one paging message includes information relating to a tracking area associated with the RAN node. ### Claim 15 A method of operating at least one core network server, the method comprising: establishing, using at least one processor, a control plane connection with at least one radio access network (RAN) node, the at least one RAN node supporting at least one of a standalone architecture (SA) connection mode or a non-standalone architecture (NSA) connection mode; determining, using the at least one processor, a connection mode of the at least one RAN node based on an indication from the at least one RAN node; setting, using the at least one processor, a signaling message configuration value corresponding to the at least one RAN node based on results of the determining the connection mode of the at least one RAN node; and determining, using the at least one processor, whether to transmit at least one signaling message based on the signaling message configuration value for the at least one RAN node. ### Claim 16 (depends on 15) The method of claim 15, wherein the determining whether to transmit the at least one signaling message to the at least one RAN node includes: enabling transmission of the at least one signaling message to the at least one RAN node in response to the signaling message configuration value of the at least one RAN node indicating the at least one RAN node is in the SA connection mode; and restricting transmission of the at least one signaling message to the at least one RAN node in response to the signaling message configuration value of the at least one RAN node indicating the at least one RAN node is in the NSA connection mode. ### Claim 17 (depends on 15) The method of claim 15, wherein the establishing the control plane connection with the at least one RAN node includes: receiving, using the at least one processor, a control plane connection request message from the at least one RAN node, the control plane connection request message including the indication indicating that the at least one RAN node is in the SA connection mode or the NSA connection mode. ### Claim 18 (depends on 15) The method of claim 15, further comprising: updating, using the at least one processor, the signaling message configuration value corresponding to the at least one RAN node based on the indication of the received message. ### Claim 19 (depends on 15) The method of claim 15, further comprising: selectively transmitting, using the at least one processor, the at least one signaling message based on results of the determining whether to transmit the at least one signaling message. ### Claim 20 (depends on 19) The method of claim 19, wherein the at least one signaling message includes a paging message, the paging message including information relating to a tracking area associated with the at least one RAN node.