Systems and methods for establishing and modifying user plane communications
Systems described herein provide techniques for establishing and modifying user plane communications sessions between Long-Term Evolution (“LTE”) User Equipment (“UE”) devices, connected to LTE base stations, and a Fifth Generation (“5G”) core network. An LTE-5G Interworking function (“LTE-5G IWF”) may logically generate a virtual 5G UE and/or 5G base station, map a LTE UE to the virtual 5G UE, and cause the establishment of a Protocol Data Unit (“PDU”) Session, at the 5G core network, with the virtual 5G UE. The LTE-5G IWF may provide PDU Session information to the LTE UE and base station to facilitate the establishment of user plane communications (e.g., via a tunnel) between the LTE UE and the 5G core network. The LTE-5G IWF may also receive modification parameters, such as Quality of Service (“QoS”) parameters, and provide instructions to the 5G core and/or to the LTE UE to handle traffic according to such parameters.
1. A device, comprising:
one or more processors configured to:
receive, from an evolved Node B (“eNB”) of a Long-Term Evolution (“LTE”) radio access network (“RAN”), a first message associated with a User Equipment (“UE”) that is communicatively coupled to the eNB;
generate, based on receiving the first message, information associated with a virtual UE, the information including a first identifier of the virtual UE;
output, to one or more devices of a Fifth Generation (“5G”) core network, a second message that includes the first identifier of the virtual UE, wherein the one or more devices establish a Protocol Data Unit (“PDU”) Session based on the second message, the PDU Session being associated with a second identifier, the PDU Session establishment process including correlating a third identifier to the first identifier of the virtual UE;
receive a third message indicating that the PDU Session has been established, the third message including the second identifier and the third identifier;
output, to the eNB and based on receiving the third message, a fourth message that includes the second identifier and the third identifier, wherein the UE and the eNB use the second and third identifiers to establish a communications session, via the LTE RAN, between the UE and the one or more devices of the 5G core network.
2. The device of claim 1 , wherein the first identifier includes at least one of:
a Subscription Concealed Identifier (“SUCI”),
a Subscription Permanent Identifier (“SUPI”), or
a Permanent Equipment Identifier (“PEI”).
3. The device of claim 1 , wherein the second identifier includes at least one of:
a PDU Session Identifier; or
a Core Network (“CN”) Tunnel Identifier.
4. The device of claim 1 , wherein the third identifier includes an Internet Protocol (“IP”) address assigned to the virtual UE as part of the PDU Session establishment process.
5. The device of claim 1 , wherein the first message includes an Attach Request received via an S1 interface.
6. The device of claim 1 , wherein outputting the second message includes outputting a UE Initial Message in an N1 container via an N26 interface between the device and the one or more devices of the 5G core network.
7. The device of claim 1 , wherein the third message includes a Registration Accept message, the Registration Accept message including the first identifier of the virtual UE.
8. A non-transitory computer-readable medium, storing a plurality of processor-executable instructions to:
receive, from an evolved Node B (“eNB”) of a Long-Term Evolution (“LTE”) radio access network (“RAN”), a first message associated with a User Equipment (“UE”) that is communicatively coupled to the eNB;
generate, based on receiving the first message, information associated with a virtual UE, the information including a first identifier of the virtual UE;
output, to one or more devices of a Fifth Generation (“5G”) core network, a second message that includes the first identifier of the virtual UE, wherein the one or more devices establish a Protocol Data Unit (“PDU”) Session based on the second message, the PDU Session being associated with a second identifier, the PDU Session establishment process including correlating a third identifier to the first identifier of the virtual UE;
receive a third message indicating that the PDU Session has been established, the third message including the second identifier and the third identifier;
output, to the eNB and based on receiving the third message, a fourth message that includes the second identifier and the third identifier, wherein the UE and the eNB use the second and third identifiers to establish a communications session, via the LTE RAN, between the UE and the one or more devices of the 5G core network.
9. The non-transitory computer-readable medium of claim 8 , wherein the first identifier includes at least one of:
a Subscription Concealed Identifier (“SUCI”),
a Subscription Permanent Identifier (“SUPI”), or
a Permanent Equipment Identifier (“PEI”).
10. The non-transitory computer-readable medium of claim 8 , wherein the second identifier includes at least one of:
a PDU Session Identifier; or
a Core Network (“CN”) Tunnel Identifier.
11. The non-transitory computer-readable medium of claim 8 , wherein the third identifier includes an Internet Protocol (“IP”) address assigned to the virtual UE as part of the PDU Session establishment process.
12. The non-transitory computer-readable medium of claim 8 , wherein the first message includes an Attach Request received via an S1 interface.
13. The non-transitory computer-readable medium of claim 8 , wherein outputting the second message includes outputting a UE Initial Message in an N1 container, via an N26 interface.
14. The non-transitory computer-readable medium of claim 8 , wherein the third message includes a Registration Accept message that includes the first identifier of the virtual UE.
15. A method, comprising:
receiving, from an evolved Node B (“eNB”) of a Long-Term Evolution (“LTE”) radio access network (“RAN”), a first message associated with a User Equipment (“UE”) that is communicatively coupled to the eNB;
generating, based on receiving the first message, information associated with a virtual UE, the information including a first identifier of the virtual UE;
outputting, to one or more devices of a Fifth Generation (“5G”) core network, a second message that includes the first identifier of the virtual UE, wherein the one or more devices establish a Protocol Data Unit (“PDU”) Session based on the second message, the PDU Session being associated with a second identifier, the PDU Session establishment process including correlating a third identifier to the first identifier of the virtual UE;
receiving a third message indicating that the PDU Session has been established, the third message including the second identifier and the third identifier;
outputting, to the eNB and based on receiving the third message, a fourth message that includes the second identifier and the third identifier, wherein the UE and the eNB use the second and third identifiers to establish a communications session, via the LTE RAN, between the UE and the one or more devices of the 5G core network.
16. The method of claim 15 , wherein the first identifier includes at least one of:
a Subscription Concealed Identifier (“SUCI”),
a Subscription Permanent Identifier (“SUPI”), or
a Permanent Equipment Identifier (“PEI”).
17. The method of claim 15 , wherein the second identifier includes at least one of:
a PDU Session Identifier; or
a Core Network (“CN”) Tunnel Identifier.
18. The method of claim 15 , wherein the first message includes an Attach Request received via an S1 interface.
19. The method of claim 15 , wherein outputting the second message includes outputting a UE Initial Message in an N1 container via an N26 interface.
20. The method of claim 15 , wherein the third message includes a Registration Accept message that includes the first identifier of the virtual UE.