# US 10,321,497 B2 · Method and apparatus for supporting data transmission of network node 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 10,321,497 B2 - Document ID: US10321497B2 - Status: Granted - Kind: B2 - Application number: 15/615,672 - Filed: 2017-06-06 - Published: 2018-04-12 - Granted: 2019-06-11 - Earliest claimed: 2016-10-11 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Dongsoo Kim; Jinsook Ryu; Jaehyun Kim; Hyunsook Kim - Web page: https://patentgrep.com/patent/US10321497B2 ## CPC - H04W 76/12: Setup of transport tunnels - H04L 12/4633: {Interconnection of networks using encapsulation techniques, e.g. tunneling} - H04L 2212/00: Encapsulation of packets - H04W 80/04: Network layer protocols, e.g. mobile IP [Internet Protocol] - H04W 88/16: Gateway arrangements - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method of supporting data transmission of a network node in a wireless communication system includes: receiving downlink data from a Data Network (DN); encapsulating the downlink data with an IP address of an User Equipment (UE) based on whether the DN is an Internet Protocol (IP) based network or a non-IP based network; not encapsulating, if the DN is the IP based network, the received downlink data with the IP address of the UE and encapsulating, if the DN is the non-IP based network, the received downlink data with the IP address of the UE; and transmitting the downlink data encapsulated with the IP address or the downlink data that are not encapsulated with the IP address to an Access Network (AN). ## Claims ### Claim 1 A method of supporting data transmission of a network node in a wireless communication system, the method comprising: receiving downlink data from a Data Network (DN); not encapsulating the received downlink data with an Internet Protocol (IP) address of a User Equipment (UE) when the DN is an IP based network, and encapsulating the received downlink data with the IP address of the UE when the DN is a non-IP based network; transmitting the downlink data encapsulated with the IP address or the downlink data that are not encapsulated with the IP address to an Access Network (AN); receiving uplink data encapsulated with the IP address of the UE from the AN; not de-capsulating the encapsulated uplink data when the DN is the IP based network, and de-capsulating the encapsulated uplink data when the DN is the non-IP based network; and transmitting the de-capsulated uplink data or the uplink data that are not de-capsulated to the DN. ### Claim 2 (depends on 1) The method of claim 1, wherein a PDU session type of the downlink data is a non-IP PDU type, and a tunneling model generated for the AN is a per-node level tunnel, and wherein the per-node level tunnel is a common connection tunnel generated in a node unit for entire traffic between the AN and the network node. ### Claim 3 (depends on 2) The method of claim 2, wherein the network node is a User Plane Function node or a Packet Data Network Gateway (P-GW). ### Claim 4 (depends on 1) The method of claim 1, wherein the received downlink data comprise the IP address of the UE, when the DN is the IP based network, and wherein the received downlink data do not comprise the IP address of the UE, when the DN is the non-IP based network. ### Claim 5 (depends on 1) The method of claim 1, wherein the IP address of the UE is an IP address of a target UE to receive the downlink data and is an IP address assigned to the UE by a Control Plane (CP)-Session Management (SM) or a Packet Data Network Gateway (P-GW) in a PDU session generation procedure of the UE. ### Claim 6 (depends on 1) The method of claim 1, further comprising encapsulating the downlink data encapsulated with the IP address or the downlink data that are not encapsulated with the IP address with the IP address of the AN. ### Claim 7 (depends on 1) The method of claim 1, wherein the encapsulated and received uplink data are uplink data in which an IP address of the network node is additionally encapsulated and received. ### Claim 8 (depends on 1) The method of claim 1, wherein a PDU session type of the uplink data is a non-IP PDU type, and a tunneling model generated for the AN is a per-node level tunnel, and wherein the per-node level tunnel is a common connection tunnel generated in a node unit for entire traffic between the AN and the network node. ### Claim 9 (depends on 8) The method of claim 8, wherein the network node is a User Plane Function node or a Packet Data Network Gateway (P-GW). ### Claim 10 A network node that supports data transmission in a wireless communication system, the network node comprising: a communication module configured to transmit and receive a signal; and a processor configured to control the communication module, wherein the processor is further configured to: receive downlink data from a Data Network (DN), not encapsulate the received downlink data with an Internet Protocol (IP) address of a User Equipment (UE) when the DN is the IP based network, and encapsulate the received downlink data with the IP address of the UE when the DN is a non-IP based network, transmit the downlink data encapsulated with the IP address or the downlink data that are not encapsulated with the IP address to an Access Network (AN), receive uplink data encapsulated with the IP address of the UE from the AN, not de-capsulate the encapsulated uplink data when the DN is the IP based network, and de-capsulate the encapsulated uplink data when the DN is the non-IP based network, and transmit the de-capsulated uplink data or the uplink data that are not de-capsulated to the DN. ### Claim 11 (depends on 10) The network node of claim 10, wherein the encapsulated and received uplink data are uplink data in which an IP address of the network node is additionally encapsulated and received. ### Claim 12 (depends on 10) The network node of claim 10, wherein a PDU session type of the downlink data is a non-IP PDU type, and a tunneling model generated for the AN is a per-node level tunnel, and wherein the per-node level tunnel is a common connection tunnel generated in a node unit for entire traffic between the AN and the network node. ### Claim 13 (depends on 12) The network node of claim 12, wherein the network node is a User Plane Function node or a Packet Data Network Gateway (P-GW). ### Claim 14 (depends on 10) The network node of claim 10, wherein the received downlink data comprise the IP address of the UE, when the DN is the IP based network, and the received downlink data do not comprise the IP address of the UE, when the DN is the non-IP based network. ### Claim 15 (depends on 10) The network node of claim 10, wherein the IP address of the UE is an IP address of a target UE to receive the downlink data and is an IP address assigned to the UE by a Control Plane (CP)-Session Management (SM) or a Packet Data Network Gateway (P-GW) in a PDU session generation procedure of the UE. ### Claim 16 (depends on 10) The network node of claim 10, wherein the processor is further configured to additionally encapsulate the downlink data encapsulated with the IP address or the downlink data that are not encapsulated with the IP address with an IP address of the AN and transmits the downlink data to the AN. ### Claim 17 (depends on 10) The network node of claim 10, wherein a PDU session type of the uplink data is a non-IP PDU type, and a tunneling model generated for the AN is a per-node level tunnel, and wherein the per-node level tunnel is a common connection tunnel generated in a node unit for entire traffic between the AN and the network node. ### Claim 18 (depends on 17) The network node of claim 17, wherein the network node is a User Plane Function node or a Packet Data Network Gateway (P-GW).