APPARATUS AND METHOD FOR SUPPORTING UPF EVENT EXPOSURE SERVICE IN WIRELESS COMMUNICATION SYSTEM
The disclosure relates to a 5 th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4 th generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, there is provided an operating method of an application function (AF) in a wireless communication system that includes: transmitting, to a network exposure function (NEF), a Nnef_EventExposure_Subscribe message including an address of a user equipment (UE) to request a subscription of a user plane function (UPF) event exposure service for the UE; and receiving, from the NEF, a Nnef_EventExposure_Notify message including information on the UPF event exposure service for the UE.
1 . An operating method of a policy control function (PCF) in a wireless communication system, the method comprising:
receiving, from a session management function (SMF), a Npcf_SMPolicyControl_Update request message including information on a user plane function (UPF);
transmitting, to the SMF, a Npcf_SMPolicyControl_Update response message;
transmitting, to a binding support function (BSF), a Nbsf_Management_Register request message including at least one of one or more user equipment (UE) addresses, one or more PCF addresses, a data network name (DNN), single-network slice selection assistance information (S-NSSAI) or the information on the UPF; and
receiving, from the BSF, a Nbsf_Management_Register response message.
2 . The method of claim 1 , wherein the Nbsf_Management_Register message further includes subscription permanent identifier (SUPI).
3 . The method of claim 1 , wherein the Nbsf_Management_Register message further includes at least one of a generic public subscription identifier (GPSI), a PCF ID or a PCF Set ID.
4 . The method of claim 1 , wherein the information on the UPF includes an UPF ID and an UPF address.
5 . An operating method of a binding support function (BSF) in a wireless communication system, the method comprising:
receiving, from a policy control function (PCF), a Nbsf_Management_Register request message including at least one of one or more user equipment (UE) addresses, one or more PCF addresses, a data network name (DNN), single-network slice selection assistance information (S-NSSAI) or the information on a user plane function (UPF);
transmitting, to the PCF, a Nbsf_Management_Register response message;
receiving, from a network exposure function (NEF), a request message including a UE address to find the UPF to subscribe to receive information reporting an event for a UE specific service flow;
transmitting, to the UPF, a Nupf_EventExposure_Subscribe message to subscribe an event exposure service; and
receiving, from the UPF, a Nupf_EventExposure_Subscribe response message.
6 . The method of claim 5 , wherein the Nupf_EventExposure_Subscribe message includes a UE address.
7 . The method of claim 5 , wherein the Nupf_EventExposure_Subscribe response message includes at least one of a subscription correlation ID or an expiry time.
8 . The method of claim 5 , further comprising:
transmitting, to the UPF, a Nupf_EventExposure_UnSubscribe message to unsubscribe the event exposure service; and
receiving, from the UPF, a Nupf_EventExposure_UnSubscribe response message.
9 . A policy control function (PCF) in a wireless communication system, the PCF comprising:
a transceiver; and
at least one processor operably coupled to the transceiver, and configured to:
receive, from a session management function (SMF), a Npcf_SMPolicyControl_Update request message including information on a user plane function (UPF),
transmit, to the SMF, a Npcf_SMPolicyControl_Update response message,
transmit, to a binding support function (BSF), a Nbsf_Management_Register request message including at least one of one or more user equipment (UE) addresses, one or more PCF addresses, a data network name (DNN), single-network slice selection assistance information (S-NSSAI) or the information on the UPF, and
receive, from the B SF, a Nbsf_Management_Register response message.
10 . The PCF of claim 9 , wherein the Nbsf_Management_Register message further includes subscription permanent identifier (SUPI).
11 . The PCF of claim 9 , wherein the Nbsf_Management_Register message further includes at least one of a generic public subscription identifier (GPSI), a PCF ID or a PCF Set ID.
12 . The PCF of claim 9 , wherein the information on the UPF includes an UPF ID and an UPF address.
13 . A binding support function (BSF) in a wireless communication system, the B SF comprising:
a transceiver; and
at least one processor operably coupled to the transceiver, and configured to:
receive, from a policy control function (PCF), a Nbsf_Management_Register request message including at least one of one or more user equipment (UE) addresses, one or more PCF addresses, a data network name (DNN), single-network slice selection assistance information (S-NSSAI) or the information on a user plane function (UPF),
transmit, to the PCF, a Nbsf_Management_Register response message,
receive, from a network exposure function (NEF), a request message including a UE address to find the UPF to subscribe to receive information reporting an event for a UE specific service flow,
transmit, to the UPF, a Nupf_EventExposure_Subscribe message to subscribe an event exposure service, and
receive, from the UPF, a Nupf_EventExposure_Subscribe response message.
14 . The BSF of claim 13 , wherein the Nupf_EventExposure_Subscribe message includes a UE address.
15 . The B SF of claim 13 , wherein the Nupf_EventExposure_Subscribe response message includes at least one of a subscription correlation ID or an expiry time.
16 . The BSF of claim 13 , wherein the at least one processor is further configured to:
transmit, to the UPF, a Nupf_EventExposure_UnSubscribe message to unsubscribe the event exposure service, and
receive, from the UPF, a Nupf_EventExposure_UnSubscribe response message.