# US 2026/0101403 A1 · Systems and methods facilitating interworking of lte-m devices with communication networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0101403 A1 - Document ID: US20260101403A1 - Status: Published application - Kind: A1 - Application number: 18/910,712 - Filed: 2024-10-09 - Published: 2026-04-09 - Earliest claimed: 2024-10-09 - Assignees: AT&T Mobility II LLC - Applicants: AT&T Mobility II LLC - Inventors: Anthony Dalby - Web page: https://patentgrep.com/patent/US20260101403A1 ## CPC - H04W 76/20: Manipulation of established connections - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects of the subject disclosure may include, for example, connecting, by an interworking system including a processor, an LTE-M device with an access and mobility management function (AMF) of a 5G mobile core network over an N-1 interface, connecting, by the interworking system, an LTE radio with the AMF over a S1 interface and a N2 interface using a next generation application protocol (NGAP), and transferring, by the interworking system, a data traffic from the LTE-M device via a user plane function of the 5G network by terminating a packet data network (PDN) session and reestablishing as a packet data unit (PDU) session. Other embodiments are disclosed. ## Claims ### Claim 1 A device, comprising: a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising: with a first component, connecting an LTE-M device with an access and mobility management function (AMF) of a mobile core of a 5G network over an N-1 interface; with a second component, connecting an LTE radio with the AMF over a S1 control (S1-MME) interface and a N2 interface using a next generation application protocol (NGAP); and with a third component, transferring a data traffic from the LTE-M device via a user plane function (UPF) of the 5G network by terminating a packet data network (PDN) session and reestablishing as a packet data unit (PDU) session. ### Claim 2 (depends on 1) The device of claim 1, wherein, with the first component, the connecting the LTE-M device further comprise configuring the first component to emulate a set of functions of a mobility management entity (MME) in communicating with the LTE-M device and emulate another set of functions of the AMF in communicating with the AMF. ### Claim 3 (depends on 2) The device of claim 2, wherein the emulating the set of functions of the MME further comprises sending a registration request including an international mobile subscriber identity (IMSI) of the LTE-M device via non-access stratum (NAS) signaling. ### Claim 4 (depends on 3) The device of claim 3, wherein the emulating another set of functions of the AMF further comprise: intercepting the registration request and detecting the IMSI of the LTE-M device; determining a subscription permanent identifier (SUPI) corresponding to the IMSI of the LTE-M device; and encrypting the SUPI to a subscription concealed identifier (SUCI). ### Claim 5 (depends on 1) The device of claim 1, wherein, with the second component, the connecting the LTE radio with the AMF further comprise configuring the second component to process control signaling transmitted via a set of protocols over the S1 control (S1-MME) interface to be transmitted using another set of protocols including the NGAP over the N2 interface. ### Claim 6 (depends on 5) The device of claim 5, wherein the second component is configured to process the control signaling transmitted via SCTP to be wrapped with the NGAP to be transmitted over the N2 interface. ### Claim 7 (depends on 3) The device of claim 3, wherein, with the third component, the transferring the data traffic further comprise configuring the third component to use a set of protocols over a S1 user data (S1-U) interface including a GTP-U and use another set of protocols including a 5G encapsulation protocol over a N9 interface. ### Claim 8 (depends on 7) The device of claim 7, wherein the operations further comprise, with the third component, querying the first component to obtain a subscription permanent identifier (SUPI) corresponding to the IMSI of the LTE-M device. ### Claim 9 (depends on 7) The device of claim 7, wherein the configuring the third component further comprise configuring the third component to terminate a GTP-U session and reestablish a packet data unit (PDU) session. ### Claim 10 A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising: connecting, via a first component, an LTE-M device with an access and mobility management function (AMF) of a mobile core of a 5G network over an N-1 interface; connecting, via a second component, an LTE radio with the AMF over a S1 interface and a N2 interface using a next generation application protocol (NGAP); and transferring, via a third component, a data traffic from the LTE-M device via a user plane function (UPF) of the 5G network by terminating a packet data network (PDN) session and reestablishing as a packet data unit (PDU) session. ### Claim 11 (depends on 10) The non-transitory machine-readable medium of claim 10, wherein the connecting, via the first component, further comprise configuring the first component to emulate a first set of MME functions between the LTE-M device and the first component and emulate a first set of AMF functions between the first component and the AMF. ### Claim 12 (depends on 11) The non-transitory machine-readable medium of claim 11, wherein the connecting, via the second component, further comprise configuring the second component to emulate a second set of MME functions between the LTE radio and the second component and emulate a second set of AMF functions between the second component and the AMF. ### Claim 13 (depends on 12) The non-transitory machine-readable medium of claim 12, wherein the connecting, via the third component, further comprise configuring the third component to emulate a set of serving gateway (SGW) functions between the LTE radio and the third component and emulate a set of user plane functions between the third component and the UPF. ### Claim 14 A method, comprising: connecting, by an interworking system including a processor, an LTE-M device with an access and mobility management function (AMF) of a mobile core of a 5G network over an N-1 interface; connecting, by the interworking system, an LTE radio with the AMF over a S1 interface and a N2 interface using a next generation application protocol (NGAP); and transferring, by the interworking system, a data traffic from the LTE-M device via a user plane function of the 5G network by terminating a packet data network (PDN) session and reestablishing as a packet data unit (PDU) session. ### Claim 15 (depends on 14) The method of claim 14, wherein the connecting the LTE-M device with the AMF further comprises: receiving a registration message from a LTE-M device over an N1 interface; and intercepting the registration message and detecting an international mobile subscriber identity (IMSI) identifier of the LTE-M device. ### Claim 16 (depends on 15) The method of claim 15, wherein the connecting the LTE-M device with the AMF further comprises: determining a subscription permanent identifier (SUPI) corresponding to the IMSI identifier of the LTE-M device; and encrypting the SUPI to a subscription concealed identifier (SUCI). ### Claim 17 (depends on 14) The method of claim 14, wherein the connecting the LTE radio with the AMF further comprises: wrapping a stream control transmission protocol packet with the NGAP; and transmitting the NGAP wrapped packet over the N2 interface. ### Claim 18 (depends on 14) The method of claim 14, wherein the transferring the data traffic further comprises: receiving the data traffic encapsulated by a GTP packet in the PDN session prior to the termination. ### Claim 19 (depends on 18) The method of claim 18, wherein the transferring the data traffic further comprises: in the reestablished PDU session, transmitting the data traffic encapsulated according to a 5G standard. ### Claim 20 (depends on 14) The method of claim 14, further comprising: receiving, by the interworking system, a PDN request including an access point name (APN) for a specific network of LTE-M devices; determining a data network name (DNN) corresponding to the APN; and routing the data traffic to an LTE-M network slice based on the determined DNN.