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KR-102961299-B1 - APPARATUS AND METHOD FOR USER EQUIPMENT IDENTIFICATION IN RADIO ACCESS NETWORK COMMUNICATION SYSTEM

KR102961299B1KR 102961299 B1KR102961299 B1KR 102961299B1KR-102961299-B1

Abstract

The present invention aims to provide a method and apparatus for identifying a user in a radio access network (RAN). To this end, a first node of a wireless communication system can identify a unique identifier of a terminal, identify a radio access network (RAN) terminal identifier of the terminal, and transmit information related to the mapping relationship between the radio access network (RAN) terminal identifier and the unique identifier of the terminal to a second node based on the unique identifier of the terminal.

Inventors

  • 송준혁
  • 고두현
  • 옥정엽
  • 이충근

Assignees

  • 삼성전자주식회사

Dates

Publication Date
20260507
Application Date
20200617
Priority Date
20190716

Claims (20)

  1. In a communication system, a method performed by an O-RAN (open-radio access network) CU (central unit)-CP (control plane) (O-CU-CP), An operation to obtain at least one UE ID (identity) of a UE (user equipment), and It includes the operation of transmitting an instruction message for reporting to a Near-RT (real-time) RIC (radio access network (RAN) intelligence controller), and The above instruction message includes the at least one UE ID and information related to the UE for each UE ID of the at least one UE ID, and The at least one UE ID includes a RAN UE ID for identifying the UE on the E1 interface between the O-CU-CP and the O-RAN CU-UP (user plane) (O-CU-UP). method.
  2. In claim 1, The above at least one UE ID includes a GUAMI (globally unique AMF identifier) and an AMF UE NGAP (NG application protocol) ID associated with an AMF (access and mobility management function), and The above GUAMI and the above AMF UE NGAP ID are obtained from an initial context setup request message received from the above AMF, method.
  3. In claim 1, The operation further includes sending a UE context setup request message including the above RAN UE ID to an O-RAN DU (distributed unit) (O-DU), and The above RAN UE ID is used to identify the UE on the F1 interface and the E1 interface between the O-CU-CP and the O-DU, method.
  4. In claim 1, The operation of receiving a RIC subscription request message from the above Near-RT RIC, and The operation further includes sending a RIC subscription response message to the above Near-RT RIC, and The above RIC subscription request message configures the O-CU-UP to transmit the instruction message to the Near-RT RIC when a specific event occurs in the O-CU-UP, and The above specific event is associated with the above at least one UE ID, and The above information related to the UE includes UE context information, method.
  5. In claim 1, The operation further comprising transmitting a bearer context setup request message including the above RAN UE ID to the above O-CU-UP, method.
  6. In a communication system, regarding a method performed by a Near-RT (real-time) RIC (radio access network (RAN) intelligence controller), An operation of receiving an instruction message for reporting from an O-RAN (open-radio access network) CU (central unit)-CP (control plane) (O-CU-CP), and said instruction message including at least one UE (user equipment) ID and information related to a UE for each UE ID of said at least one UE ID, and The at least one UE ID includes a RAN UE ID for identifying the UE on the E1 interface between the O-CU-CP and the O-RAN CU-UP (user plane) (O-CU-UP). method.
  7. In claim 6, The above at least one UE ID includes a GUAMI (globally unique AMF identifier) associated with an AMF (access and mobility management function) and an AMF UE NGAP (NG application protocol) ID, method.
  8. In claim 6, The above RAN UE ID is used to identify the UE on the F1 interface and the E1 interface between the O-CU-CP and the O-RAN DU (distributed unit) (O-DU), method.
  9. In claim 6, The operation of sending an RIC subscription request message to the above O-CU-CP, and The operation of receiving an RIC subscription response message from the above O-CU-CP is further included, The above RIC subscription request message configures the O-CU-UP to transmit the instruction message to the Near-RT RIC when a specific event occurs in the O-CU-UP, and The above specific event is associated with the above at least one UE ID, and The above information related to the UE includes UE context information, method.
  10. In claim 6, It further includes the operation of transmitting policy information to Non-RT RICs, and The above policy information includes one or more UE IDs, and The above one or more UE IDs are based on the above RAN UE ID, method.
  11. In a communication system, regarding the O-RAN (open-radio access network) CU (central unit)-CP (control plane) (O-CU-CP) device, At least one transmitter/receiver, It includes at least one processor coupled to the above at least one transmitter/receiver, and The above at least one processor is, Obtain at least one UE ID (identity) of the UE (user equipment), and It is configured to transmit instruction messages for reporting to a Near-RT (real-time) RIC (radio access network (RAN) intelligence controller) through at least one transceiver, and The above instruction message includes the at least one UE ID and information related to the UE for each UE ID of the at least one UE ID, and The at least one UE ID includes a RAN UE ID for identifying the UE on the E1 interface between the O-CU-CP and the O-RAN CU-UP (user plane) (O-CU-UP). device.
  12. In claim 11, The above at least one UE ID includes a GUAMI (globally unique AMF identifier) and an AMF UE NGAP (NG application protocol) ID associated with an AMF (access and mobility management function), and The above GUAMI and the above AMF UE NGAP ID are obtained from an initial context setup request message received from the above AMF, device.
  13. In claim 11, The operation further includes sending a UE context setup request message including the above RAN UE ID to an O-RAN DU (distributed unit) (O-DU), and The above RAN UE ID is used to identify the UE on the F1 interface and the E1 interface between the O-CU-CP and the O-DU, device.
  14. In claim 11, the at least one processor is, Through the above at least one transceiver, a RIC subscription request message is received from the Near-RT RIC, and It is additionally configured to transmit an RIC subscription response message to the Near-RT RIC through the above at least one transceiver, and The above RIC subscription request message configures the O-CU-UP to transmit the instruction message to the Near-RT RIC when a specific event occurs in the O-CU-UP, and The above specific event is associated with the above at least one UE ID, and The above information related to the UE includes UE context information, device.
  15. In claim 11, the at least one processor is, Additionally configured to transmit a bearer context setup request message including the RAN UE ID to the O-CU-UP through the at least one transceiver. device.
  16. In a communication system, regarding a device of a Near-RT (real-time) RIC (radio access network (RAN) intelligence controller), At least one transmitter/receiver, It includes at least one processor coupled to the above at least one transmitter/receiver, and The above at least one processor is, It is configured to receive instruction messages for reporting from an O-RAN (open-radio access network) CU (central unit)-CP (control plane) (O-CU-CP) through at least one transceiver, and The above instruction message includes at least one UE (user equipment) ID and information related to the UE for each UE ID of the at least one UE ID, and The at least one UE ID includes a RAN UE ID for identifying the UE on the E1 interface between the O-CU-CP and the O-RAN CU-UP (user plane) (O-CU-UP). device.
  17. In claim 16, The above at least one UE ID includes a GUAMI (globally unique AMF identifier) associated with an AMF (access and mobility management function) and an AMF UE NGAP (NG application protocol) ID, device.
  18. In claim 16, The above RAN UE ID is used to identify the UE on the F1 interface and the E1 interface between the O-CU-CP and the O-RAN DU (distributed unit) (O-DU), device.
  19. In claim 16, the at least one processor is, Through the above at least one transceiver, a RIC subscription request message is transmitted to the O-CU-CP, and The above at least one transceiver is additionally configured to receive an RIC subscription response message from the O-CU-CP, and The above RIC subscription request message sets the O-CU-UP to transmit the instruction message to the Near-RT RIC when a specific event occurs in the O-CU-UP. The above specific event is associated with the above at least one UE ID, and The above information related to the UE includes UE context information, device.
  20. In claim 16, the at least one processor is, It is additionally configured to transmit policy information to a Non-RT RIC through at least one transceiver, and The above policy information includes one or more UE IDs, and The above one or more UE IDs are based on the above RAN UE ID, device.

Description

Apparatus and Method for User Equipment IDentification in Radio Access Network Communication System The present invention relates to a method and apparatus for user identification, identifier generation, and transmission of a base station of a wireless communication system. With the commercialization of 5th generation communication systems (hereinafter referred to as 5G systems, NR (new radio or next radio) systems, etc.) to meet the demand for wireless data traffic, it is expected that services with high data transmission rates will be provided to users through 5G systems, just like 4G, and that wireless communication services for various purposes, such as the Internet of Things and services requiring high reliability for specific purposes, will be provided. In the Open Radio Access Network (O-RAN), established by operators and equipment providers in a system currently mixed with 4th generation communication systems and 5th generation systems, new Network Element (NE) and Interface specifications were defined based on existing 3GPP standards, leading to the emergence of the O-RAN (Open Radio Access Network) structure. Figure 1a is a diagram illustrating an example of a 4G LTE core system. Figure 1b is a diagram illustrating an example of a 3GPP 5G Non-Standard Alone (NSA) system. Figure 2 is a diagram illustrating the configuration of an IMSI, which is a unique identifier for terminals commonly used in 3G, 4G, and 5G systems as defined by the ITU-T. Figure 3 is a diagram illustrating the configuration of GUTI used by the MME of an LTE core network as defined in the 3GPP standard. Figure 4 is a diagram illustrating an example of a 5G NR core system. Figure 5 is a diagram illustrating the configuration of 5G-GUTI used in a 5G core system. Figure 6 is a diagram illustrating an example of an O-RAN network system. Figure 7 is a diagram illustrating an example of a connection between an O-RAN RIC and multiple O-CU-CPs, O-CU-UPs, and O-DUs. Figure 8 is a diagram illustrating the procedure for a CU-CP of a 5G RAN defined by 3GPP to acquire a 5G-GUTI. Figure 9 is a diagram illustrating the procedure for the O-CU-CP of the 5G RAN defined in the O-RAN to acquire the 5G-GUTI. Figure 10 is a diagram illustrating the procedure for an eNB of a 4G RAN to acquire GUTI as defined by 3GPP. Figure 11 is a diagram illustrating the procedure for an eNB of a 4G O-RAN defined in O-RAN to acquire a GUTI. Figure 12 is a diagram illustrating the procedure for an eNB of a 4G RAN defined by 3GPP to generate a GUTI. Figure 13 is a diagram illustrating the procedure for a CU-CP of a 5G RAN defined by 3GPP to generate a 5G-GUTI. Figure 14 is a diagram illustrating the procedure for an RIC defined in O-RAN to receive information classified as a specific terminal from an O-DU and an O-CU-CP. Figure 15 is a diagram illustrating the procedure for an NRT-RIC defined in O-RAN to receive information classified as a specific terminal from an O-DU, O-CU-CP, and RIC. Figure 16 is a diagram illustrating the procedure for a Collection server to receive information classified as a specific terminal from a DU, CU-UP, and CU-CP defined by 3GPP. Figure 17 is a diagram illustrating the procedure for an RIC to receive information classified as a specific terminal from an O-DU, O-CU-UP, and O-CU-CP defined in an O-RAN. FIG. 18 is a diagram illustrating an example of using the 5G-GUTI-based UE separator proposed in the present invention in O-RAN. FIG. 19 is a drawing illustrating an apparatus for carrying out the present invention. Figure 20 is a diagram illustrating an example of a 5G Non-Standard Alone (NSA) system defined in O-RAN. Figure 21 is a diagram illustrating the procedure for an eNB connected to a terminal to acquire a GUTI in the case of an NSA EN-DC defined in O-RAN. Figure 22 is a diagram illustrating the procedure for a CU-CP of a 5G RAN defined by 3GPP to acquire a GUAMI in the case of an initial attachment of a terminal. Figure 23 is a diagram illustrating the procedure for an eNB of a 4G RAN defined by 3GPP to acquire a GUMMEI in the case of an initial attachment of a terminal. Figure 24 is a diagram illustrating an example of a procedure in which the O-CU-CP of the 5G RAN defined in the O-RAN assigns a globally unique RAN UE ID in the core network in the case of the terminal's initial attach. FIG. 25 is a diagram illustrating the procedure for an eNB to assign a Globally Unique RAN UE ID in the core network during the initial attachment of a terminal in the case of LTE/NSA defined in O-RAN. FIG. 26 is a diagram illustrating an example of a procedure in which the O-CU-CP of a 5G RAN defined in O-RAN assigns the RAN UE NGAP ID used for core network and NGAP configuration to the RAN UE ID in the case of the terminal's Initial Attach. Figure 27 is a diagram illustrating the RAN UE NGAP ID specified in the 3GPP standard. FIG. 28 is a diagram illustrating an example of a procedure in which the O-CU-CP of the 5G RAN defined in the O-RAN assigns