# US 11,115,115 B2 · Non-access stratum connection handling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,115 B2 - Document ID: US11115115B2 - Status: Granted - Kind: B2 - Application number: 16/899,651 - Filed: 2020-06-12 - Published: 2020-12-17 - Granted: 2021-09-07 - Earliest claimed: 2019-06-14 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Jinsook Ryu; Esmael Dinan; Yunjung Yi; Kyungmin Park; Peyman Talebi Fard; Weihua Qiao - Web page: https://patentgrep.com/patent/US11115115B2 ## CPC - H04B 7/18526: {Arrangements for data linking, networking or transporting, or for controlling an end to end session (data switching networks H04L12/00)} - H04W 48/00: Access restriction (access security to prevent unauthorised access H04W12/08); Network selection; Access point selection - H04B 7/185: Space-based or airborne stations; {Stations for satellite systems}(H04B7/204 takes precedence) - H04B 7/18539: {Arrangements for managing radio, resources, i.e. for establishing or releasing a connection} - H04B 7/19: Earth-synchronous stations - H04B 7/195: Non-synchronous stations - H04W 8/08: Mobility data transfer - H04W 24/02: Arrangements for optimising operational condition - H04W 48/16: Discovering, processing access restriction or access information - H04W 76/25: Maintenance of established connections - H04W 88/14: Backbone network devices - H04W 60/00: Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration - H04W 60/001: {Registration rejection or failure} - H04W 76/10: Connection setup - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 84/06: Airborne or Satellite Networks (space-based or airborne stations H04B7/185) - H04B: TRANSMISSION - 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 device receives, from a non-terrestrial network (NTN) base station, access network information indicating an access network type of a plurality of access network types comprising: a geostationary earth orbit (GEO) access network type; and a low earth orbit (LEO) access network type. Based on the access network type, first non-access stratum (NAS) period among a plurality of NAS period are selected. The plurality of NAS periods comprise: a first value associated with the GEO access network type; and a second value associated with the LEO access network type. A NAS procedure is initiated by sending, to an access and mobility management function (AMF) via the NTN base station, a first NAS request message. A start of the first NAS period is based on the sending. The NAS procedure is aborted in response to an expiration of the first NAS period. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device from a non-terrestrial network (NTN) base station, access network information indicating an access network type of a plurality of access network types comprising: a geostationary earth orbit (GEO) NTN access network type; and a low earth orbit (LEO) NTN access network type; selecting, based on the access network type, a first non-access stratum (NAS) period among a plurality of periods comprising: a first value associated with the GEO NTN access network type; and a second value associated with the LEO NTN access network type; initiating a NAS procedure by sending, to an access and mobility management function (AMF) via the NTN base station, a first NAS request message, wherein a start of the first NAS period is based on the sending; and in response to an expiration of the first NAS period, aborting the NAS procedure. ### Claim 2 (depends on 1) The method of claim 1, wherein the first value is longer than the second value. ### Claim 3 (depends on 1) The method of claim 1, wherein the second value is further associated with a terrestrial network (TN) access network type. ### Claim 4 (depends on 3) The method of claim 3, wherein the TN access network type comprises at least one of: a wide-band evolved terrestrial radio access (WB-E-UTRA) type; or a new radio (NR) type. ### Claim 5 (depends on 1) The method of claim 1, further comprising sending, by the wireless device to the AMF, a second NAS request message in response to the expiration of the first NAS period, wherein the second NAS request message is based on the first NAS request message. ### Claim 6 (depends on 1) The method of claim 1, further comprising receiving, by the wireless device from the AMF, a first NAS response message prior to the expiration of the first NAS period. ### Claim 7 (depends on 1) The method of claim 1, further comprising: receiving, by the wireless device from the AMF, backhaul network information corresponding to a core network; determining a second NAS period based on the backhaul network information; and sending, to the AMF, a third NAS request message, wherein a start of the second NAS period is based on the sending the third NAS request message. ### Claim 8 (depends on 7) The method of claim 7, wherein the backhaul network information comprises at least one of: NTN type information; backhaul latency information; or altitude information. ### Claim 9 (depends on 8) The method of claim 8, wherein the NTN type information comprises at least one of: a parameter indicating a GEO; a parameter indicating a medium earth orbit (MEO); or a parameter indicating a LEO. ### Claim 10 (depends on 1) The method of claim 1, further comprising receiving, by the wireless device from the AMF, a first NAS response message prior to the expiration of the first NAS period. ### Claim 11 A wireless device, comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: receive, from a non-terrestrial network (NTN) base station, access network information indicating an access network type of a plurality of access network types comprising: a geostationary earth orbit (GEO) NTN access network type; and a low earth orbit (LEO) NTN access network type; select, based on the access network type, a first non-access stratum (NAS) period among a plurality of periods comprising: a first value associated with the GEO NTN access network type; and a second value associated with the LEO NTN access network type; initiate a NAS procedure by sending, to an access and mobility management function (AMF) via the NTN base station, a first NAS request message, wherein a start of the first NAS period is based on the sending; and in response to an expiration of the first NAS period, abort the NAS procedure. ### Claim 12 (depends on 11) The wireless device of claim 11, wherein the first value is longer than the second value. ### Claim 13 (depends on 11) The wireless device of claim 11, wherein the second value is further associated with a terrestrial network (TN) access network type. ### Claim 14 (depends on 13) The wireless device of claim 13, wherein the TN access network type comprises at least one of: a wide-band evolved terrestrial radio access (WB-E-UTRA) type; or a new radio (NR) type. ### Claim 15 (depends on 11) The wireless device of claim 11, further comprising sending, by the wireless device to the AMF, a second NAS request message in response to the expiration of the first NAS period, wherein the second NAS request message is based on the first NAS request message. ### Claim 16 (depends on 11) The wireless device of claim 11, further comprising receiving, by the wireless device from the AMF, a first NAS response message prior to the expiration of the first NAS period. ### Claim 17 (depends on 11) The wireless device of claim 11, further comprising: receiving, by the wireless device from the AMF, backhaul network information corresponding to a core network; determining a second NAS period based on the backhaul network information; and sending, to the AMF, a third NAS request message, wherein a start of the second NAS period is based on the sending the third NAS request message. ### Claim 18 (depends on 17) The wireless device of claim 17, wherein the backhaul network information comprises at least one of: NTN type information; backhaul latency information; or altitude information. ### Claim 19 (depends on 18) The wireless device of claim 18, wherein the NTN type information comprises at least one of: a parameter indicating a GEO; a parameter indicating a medium earth orbit (MEO); or a parameter indicating a LEO. ### Claim 20 A system comprising: a non-terrestrial network (NTN) base station comprising: one or more first processors; and first memory storing instructions that, when executed by the one or more first processors, cause the NTN base station to send access and network information indicating an access network type of plurality of access network types comprising: a geostationary earth orbit (GEO) NTN access network type; and a low earth orbit (LEO) NTN access network type; and a wireless device comprising: one or more second processors; and second memory storing instructions that, when executed by the one or more second processors, cause the wireless device to: receive the access and network information; select, based on the access network type, a first non-access stratum (NAS) period among a plurality of periods comprising: a first value associated with the GEO NTN access network type; and a second value associated with the LEO NTN access network type; initiate, a NAS procedure by sending, to an access and mobility management function (AMF) via the base station, a first NAS request message, wherein a start of the first NAS period is based on the sending; and in response to an expiration of the first NAS period, abort the NAS procedure.