Method and device for exposing network of group

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to an embodiment, a method for operating a network exposure function (NEF) in a wireless communication system includes receiving, from an application function (AF), a request message including an external group ID and an aggregation condition used outside the network, converting the external group ID to an internal group ID used inside the network, performing aggregation on a response or report based on the aggregation condition and the internal group ID, and transmitting the aggregated response or report to the AF. And transmitting a response message corresponding to the request message to the AF. The aggregation condition may include a first condition for the data transmission and a second condition for the event.

Description

Technical Field

[0001] The present disclosure relates to a method for supporting provisioning and monitoring of user equipment (UE) and group-targeted traffic by extending the capability of supporting group communications in a wireless communication network. Background Art

[0002] The 5th generation (5G) mobile communication technology defines a wide frequency band to achieve fast transmission speeds and new services, and can be implemented in frequencies below 6 GHz ("sub-6 GHz"), such as 3.5 GHz, and in ultra-high frequency bands ("above 6 GHz"), such as 28 GHz and 39 GHz, called millimeter waves (mmWave). In addition, 6G mobile communication technology, which is called a super 5G system, is considered to be implemented in a terahertz frequency band (e.g., 95 GHz to 3 THz) to achieve a transmission speed 50 times faster than that of 5G mobile communication technology and an ultra-low latency reduced by 1 / 10.

[0003] In the early stages of 5G mobile communication technology, beamforming and massive MIMO are standardized to mitigate propagation path losses and increase propagation distance in ultra-high frequency bands, support various parameter sets for efficient use of ultra-high frequency resources (e.g., operation of multiple subcarrier gaps), dynamic operation of time slot formats, initial access technology for supporting multi-beam transmission and broadband, definition and operation of bandwidth parts (BWPs), new channel coding such as low-density parity-check (LDPC) codes for large-scale data transmission and polar codes for high-reliability transmission of control information, L2 preprocessing, and network slicing for providing dedicated networks designated for specific services in order to meet the performance requirements and support services of enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine type communication (mMTC).

[0004] Currently, improvements and performance enhancements of initial 5G mobile communication technologies are being discussed in view of the services that 5G mobile communication technologies are intended to support, and physical layer standardization is underway for technologies such as Vehicle-to-Everything (V2X) for increasing user convenience and assisting autonomous vehicles in driving decisions based on position and status information transmitted from VoNR, New Radio Unlicensed (NR-U) for system operations designed to match various regulatory requirements, NR UE energy saving, Non-Terrestrial Networks (NTN) for direct communication between UE and satellites to ensure coverage in areas where communication with terrestrial networks is not possible, and positioning technology.

[0005] Also being standardized are radio interface architecture / protocols for Industrial Internet of Things (IIoT) technologies to support new services through association and convergence with other industries, Integrated Access and Backhaul (IAB) for providing nodes to extend the network service area by supporting access links with radio backhaul links, mobility enhancements including conditional handover and dual active protocol stack (DAPS) handover, 2-step RACH for NR to simplify the random access procedure, and system architecture / service fields for 5G baseline architecture (e.g., service-based architecture or service-based interface), mobile edge computing (MEC) for combining network function virtualization (NFV) and software defined networking (SDN) technologies, and UE-based location-based reception of services.

[0006] As 5G mobile communication systems are commercialized, rapidly developing connected devices will be connected to the communication network, making it expected that the functions and performance of 5G mobile communication systems and the integrated operation of connected devices need to be enhanced. To this end, new research will be conducted on, for example, 5G performance enhancement and complexity reduction using artificial intelligence (AI) and machine learning (ML), support for AI services, support for virtual reality services, and drone communications to effectively support extended reality (XR) such as augmented reality (AR), virtual reality (VR), and mixed reality (MR), and support for AI services, virtual reality services, and drone communications.

[0007] In addition, the development of such 5G mobile communication systems can be the basis for multi-antenna transmission technologies such as new waveforms for ensuring coverage in the terahertz band for 6G mobile communication, full-dimensional MIMO (FD-MIMO), array antennas and massive antennas, full-duplex technology for enhancing system network and frequency efficiency of 6G mobile communication technology and reconfigurable smart surfaces (RIS), high-dimensional spatial multiplexing using orbital angular momentum (OAM), metamaterial-based lenses and antennas to enhance coverage of terahertz band signals, AI-based communication technologies for achieving system optimization by embedding end-to-end AI support functions and using satellites and artificial intelligence (AI) from the design step, and next-generation distributed computing technologies for achieving services whose complexity exceeds the limits of UE operating capabilities through ultra-high performance communication and computing resources. Summary of the invention

[0008] Technical issues

[0009] The present disclosure supports a network exposure method for changing UE and service configuration or monitoring specific events or performance at the request of an external application function (AF) of a 3GPP network (e.g., 5GS).

[0010] The present disclosure also supports methods for creating / changing / deleting groups and adding / changing / deleting group members to support group communications in 3GPP networks (e.g., 5GS).

[0011] Compared to handling one UE when supporting network exposure for a group, the present disclosure requires additional considerations on how to deal with group changes and how to aggregate responses to the group.

[0012] Technical Solutions

[0013] According to an embodiment, a method for operating a network exposure function (NEF) in a wireless communication system may include: receiving a request message including an external group identification (ID) and an aggregation condition used outside the network from an application function (AF), converting the external group ID into an internal group ID used inside the network, performing aggregation on a response or report based on the aggregation condition and the internal group ID, and sending a response message corresponding to the request message to the AF. The aggregation condition may include a first condition for data transmission and a second condition for an event.

[0014] According to an embodiment, a method for operating an application function (AF) in a wireless communication system may include: sending a request message including an external group ID and an aggregation condition used outside the network to a network exposure function (NEF), and receiving a response message corresponding to the request message from the NEF. The external group ID may be converted into an internal group ID used inside the network. Aggregation on a response or report may be performed based on the aggregation condition and the internal group ID. The aggregation condition may include a first condition for data transmission and a second condition for an event.

[0015] According to an embodiment, a network exposure function (NEF) in a wireless communication system includes a transceiver and a processor. The processor may be configured to control receiving a request message including an external group identification (ID) and an aggregation condition used outside the network from an application function (AF), converting the external group ID into an internal group ID used inside the network, performing aggregation on a response or report based on the aggregation condition and the internal group ID, and controlling sending a response message corresponding to the request message to the AF. The aggregation condition may include a first condition for data transmission and a second condition for an event.

[0016] According to an embodiment, an application function (AF) in a wireless communication system includes a transceiver and a processor. The processor may be configured to control to send a request message including an external group ID and an aggregation condition used outside the network to a network exposure function (NEF), and to control to receive a response message corresponding to the request message from the NEF. The external group ID may be converted into an internal group ID used inside the network. Aggregation regarding a response or report may be performed based on the aggregation condition and the internal group ID. The aggregation condition may include a first condition for data transmission and a second condition for an event.

[0017] The present disclosure may support a network exposure method for changing UE and service configuration or monitoring specific events or performance at the request of an external application function (AF) in a 3GPP network (e.g., 5GS).

[0018] The present disclosure can specify aggregation conditions when changes occur in a group, thereby supporting detailed operations.

[0019] Before proceeding to the following detailed description, it may be helpful to set forth definitions of certain words and phrases used throughout this patent document: the terms "include" and "comprising" and their derivatives are meant to include, but are not limited to; the term "or" is inclusive, meaning and / or; the phrases "associated with" and "associated with" and their derivatives may mean include, be included within, interconnected with, contain, be contained within, connect to or be connected with, be coupled to or be coupled with, be communicative with, cooperate with, interleave, juxtapose, be proximate to, be bound to or be bound with, have, have the property of, etc.; and the term "controller" means any device, system, or portion thereof that controls at least one operation, such device may be implemented in hardware, firmware, or software, or some combination of at least two thereof. It should be noted that the functionality associated with any particular controller may be centralized or distributed, whether locally or remotely.

[0020] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, instances, related data or a portion thereof suitable for implementation in a suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disk (CD), a digital video disc (DVD) or any other type of memory. "Non-transitory" computer-readable media does not include wired, wireless, optical or other communication links that transmit temporary electrical signals or other signals. Non-transitory computer-readable media include media that can permanently store data and media that can store data and rewrite data later, such as rewritable optical disks or erasable memory devices.

[0021] Definitions for certain words and phrases are provided throughout this patent document, those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

[0022] Beneficial effects

[0023] The present disclosure provides a method for group changes and aggregating responses to the group. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] A more complete understanding of the present disclosure and its many attendant aspects will be readily obtained by reference to the following detailed description when considered in conjunction with the accompanying drawings, in which:

[0025] Figure 1 Group management and network exposure according to an embodiment of the present disclosure are shown;

[0026] Figure 2 A flowchart showing the operation of the group network exposure method according to an embodiment of the present disclosure;

[0027] Figure 3 shows polymerization conditions according to an embodiment of the present disclosure;

[0028] Figure 4a and Figure 4b A flow chart of a group provisioning method according to an embodiment of the present disclosure is shown;

[0029] Figure 5a and Figure 5b A flow chart of a group monitoring method according to an embodiment of the present disclosure is shown;

[0030] Figure 6 shows the configuration of a UE according to an embodiment of the present disclosure; and

[0031] Figure 7 The configuration of the network entity according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0032] Discussed below Figures 1 to 7 The various embodiments of the principles of the present disclosure used to describe in this patent document are only for illustration and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any appropriately arranged system or device.

[0033] Hereinafter, the operating principle of the present disclosure is described below with reference to the accompanying drawings. When it is determined that the subject matter of the present disclosure is unclear, the detailed description of known functions or configurations can be skipped. The terms used herein are defined in consideration of the functions in the present disclosure and can be replaced with other terms according to the intention or practice of the user or operator. Therefore, these terms should be defined based on the overall disclosure.

[0034] As used herein, for the convenience of description, terms used to identify access nodes, terms representing network entities, terms representing messages, terms representing interfaces between network entities, and terms representing various identification information are provided as examples. Therefore, the present disclosure is not limited by these terms, and these terms can be replaced by other terms representing objects with equivalent technical concepts.

[0035] For ease of description, this document uses the terms and names defined in the third generation partnership project 5G and NR standards in the communication standards. However, the present disclosure is not limited to these terms and names, and can also be applied to wireless communication networks that comply with other standards. Specifically, the present disclosure can be applied to 3GPP GS / NR (e.g., the fifth generation mobile communication standard).

[0036] Figure 1 Group management and network exposure according to an embodiment of the present disclosure are illustrated.

[0037] refer to Figure 1 , the wireless communication system 10 may include an application function (AF) 100 , a network exposure function (NEF) 110 , a unified data repository (UDR) 120 , a unified data management (UDM) 130 , and a plurality of network exposure functions (NF) 140 .

[0038] The AF 100 may be a network entity having a function of providing services to users in conjunction with a mobile communication network.

[0039] NEF 110 may be a network entity that may obtain access to information for managing UEs in a 5G network, and may send subscriptions to mobility management events of the UE, subscriptions to session management events of the UE, requests for session related information, charging information configuration of the UE, PDU session policy change requests of the UE, and small data of the UE.

[0040] The UDR 120 may be a network entity that stores and manages data. The UDR 120 may store UE subscription information and provide the UE subscription information to the UDM 130 when a new UE is registered or a change is made or requested to be made to the existing UE subscription information. The UDR 120 may store operator policy information and may provide operator policy information. The UDR 120 may store information related to network service exposure and provide information related to network service exposure to the NEF 110.

[0041] UDM 130 may be a network entity that stores information about subscribers and / or UEs.

[0042] Each of the multiple NFs 140 may be a network node. A network node may be physically or / and logically independent, or may be configured with other specific nodes. Each of the multiple NFs 140 may be implemented as a specific device. As another example, each of the multiple NFs 140 may be implemented as a combination of a device and software. As another example, each of the multiple NFs 140 may be implemented as software in a device on a collection specific network. According to an embodiment, each of the multiple NFs 140 may be a specific instance, and two or more identical or different instances may be operated in one device. Even if driven in the form of such an instance, it may be understood in the same manner as applied to the NFs described in the present disclosure.

[0043] According to an embodiment, the AF 100 may configure a group in the UDR 120 via the NEF 110. According to an embodiment, a group may be created, modified and / or deleted. Members may be added and / or deleted for each group, and attributes may also be set for each group.

[0044] According to another embodiment, the AF 100 may change the UE and service configurations or monitor specific events or performance of the UE and services in conjunction with the NF 140 in the 5GS via the NEF 110.

[0045] Figure 2 A flow chart showing the operation of a group network exposure method according to an embodiment of the present disclosure is shown.

[0046] refer to Figure 1 and Figure 2 In step 210, the AF 100 may send a provisioning and / or monitoring request for the group to the NEF 110. According to an embodiment, the provisioning and / or monitoring request may include information about the aggregation condition. Figure 3 The polymerization conditions are described in detail.

[0047] In step 220, the NEF 110 may query the UDR 120 and / or the UDM 130 for information about the group. In step 230, the NEF 110 may obtain a group list from the UDR 120 and / or the UDM 130. The NEF 110 may identify the group list and request necessary NF 140 for provisioning / monitoring.

[0048] In step 240, at least one of the plurality of NFs 140 may send a provisioning and / or monitoring request for a UE / session.

[0049] The NEF 110 may request them to notify the changes of sessions and membership changes of the UE / group and request necessary NF 140 for provisioning / monitoring for each UE if there are any changes.

[0050] In step 250, when there is a UE, service and / or member change, UDM 130 may send information about the UE, service and / or member change to NEF 110. Thereafter, in step 230, NEF 110 may obtain a group list from UDR 120 and / or UDM 130.

[0051] In step 260, the NEF 110 may process the provisioning / monitoring response and report according to the aggregated condition. The NEF 110 may transmit the result processed in step 260 to the AF 100. In step 270, the AF 100 may identify the response and report for the group.

[0052] Figure 3 The polymerization conditions according to an embodiment of the present disclosure are shown.

[0053] refer to Figure 3 , the aggregation conditions may include transmission conditions and data processing (or collection) conditions.

[0054] The transmission conditions can be configured in the following combinations:

[0055] - Per group, per UE;

[0056] - Space: tracking area (TA) entry / exit, registration area (RA) opening / exit;

[0057] Timing: Periodic: sent at regular intervals, Guard Time: sent after a predetermined time; or

[0058] - Event quantity: maximum quantity: send when this quantity is reached, minimum quantity: send after this quantity is reached, etc.

[0059] Data processing (or collection) conditions can be set in the following combinations:

[0060] - Per group, per UE;

[0061] - Total: the sum of the number of event arrivals (e.g., UE newly entering a specific TA area);

[0062] - Maximum: take the maximum value reached by the event (e.g. peak data rate); or

[0063] - List: lists event contents (eg, target UEs), etc.

[0064] According to an embodiment, the aggregation condition may combine the transmission condition and the data processing (or collection) condition to handle the request / response transmission.

[0065] For example, transmission conditions and data processing (or collection) conditions may be combined as follows:

[0066] - Transmission conditions: per group, periodic, Data processing (or collection) conditions: per group total; or

[0067] - Transmission conditions: protection time and maximum and minimum number per group, data handling (or collection) conditions: per group, list UEs, etc.

[0068] Figure 4a and Figure 4b A group provisioning method according to an embodiment of the present disclosure is shown.

[0069] refer to Figure 4a and 4b , a wireless communication system for group provisioning may include a user equipment (UE) 400, a (R) AN 410, an AMF / PCF / TSCTSF 420, an SMF / PCF / TSCTSF 430, an UDM 440, an UDR 450, an NEF 460, and an AF 470. Here, the AMF may be an access and mobility management function, the SMF may be a session management function, the PCF may be a policy control function, and the TSCTSF may be a time-sensitive communication and time synchronization function.

[0070] In step 0, UE 400 may perform a registration process with 5GS.

[0071] In step 0a, UE 400 may establish a PDU session with 5GS.

[0072] In step 1, the AF 470 may send a provisioning request to the NEF 460. According to an embodiment, the provisioning request may include at least one of an external group ID (Ext-Group), a dynamic / static indication, an aggregation condition, and other parameters.

[0073] According to an embodiment, the external group ID may be a group ID used outside the 5G system.

[0074] According to an embodiment, when set to dynamic, the provisioning request may be additionally applied based on the changed situation when a membership change occurs in the future. According to an embodiment, when set to static, the provisioning request targets the member at the time of the request, and if a membership change occurs in the future, further reflection on the additional member may not be considered.

[0075] According to an embodiment, the polymerization conditions are as follows Figure 3 shown.

[0076] In step 2, the NEF 460 may convert the external group ID received in step 1 into an internal group ID used inside the 3GPP network. According to an embodiment, the NEF 460 may query the UDM 440 based on the external group ID, and receive the internal group ID in response.

[0077] In step 2a, NEF 460 may perform a group query on UDR 450 to obtain a list of UEs corresponding to the internal group ID.

[0078] In step 3, NEF 460 may request configuration related to UE 400 from the network functions (NFs) of AMF, PCF, and TSCTSF of each UE identified in step 2a, and receive a response to the configuration result. According to an embodiment, the request and response messages may include at least one of UE ID, internal group ID, and configuration related parameters.

[0079] In step 3a, NEF 460 may request service-related configuration from SMF, PCF, and NF of TSCTSF for each UE identified in step 2a, and may receive a response to the result of the configuration. According to an embodiment, the request and response messages may include at least one of UE ID, PDU session ID, data network name (DNN) / single network slice selection assistance information (S-NSSAI), internal group ID, and configuration-related parameters.

[0080] In step 4, the NEF 460 may send a registration / PDU session state subscription request to the UDM 440. According to an embodiment, the registration / PDU session state subscription request may include at least one of an internal group ID, a dynamic / static indication, and other parameters.

[0081] In step 5, the UDM 440 may send a request for registration status subscription of each UE in the group specified by the internal group ID to the AMF 420 and receive a response. According to an embodiment, the registration status subscription request / response may include at least one of the UE ID and the internal group ID.

[0082] In step 5a, UDM 440 may send a PDU session state subscription request to SMF 430 for each UE in the group specified by the internal group ID, and receive a response. According to an embodiment, the request / response for PDU session state subscription may include at least one of UEID, internal group ID, PDU session ID, and DNN / S-NSSAI.

[0083] In step 6, the UDM 440 may send a registration / PDU session status subscription response to the NEF 460. According to an embodiment, the registration / PDU session status subscription response may include at least one of an internal group ID, a dynamic / static indication, and other parameters.

[0084] The NEF 460 may perform aggregation based on an aggregation condition.

[0085] In step 7, the NEF 460 may aggregate the responses according to the data processing (or collection) conditions of the aggregation conditions, and may send a provisioning response to the AF 470 based on the transmission conditions of the aggregation conditions. According to an embodiment, the provisioning response may include at least one of an external group ID, a transaction ID, a dynamic / static indication, and an aggregation condition. According to an embodiment, the provisioning response may be for a group and may be a collection of responses for each individual UE. According to an embodiment, the provisioning response is used to monitor each UE and may be a collection of several responses for each UE.

[0086] In step 8, if the registration state of UE 400 changes, AMF 420 may notify UDM 440, and UDM 440 may in turn notify NEF 460. According to an embodiment, the notification may include at least one of the UE ID and the internal group ID. According to an embodiment, if AF 470 is set to dynamic in step 1 and a member change occurs, UDM 440 may perform steps 5 and 5a with respect to the changed UE.

[0087] In step 8a, if the PDU session state of UE 400 changes, SMF 430 may notify UDM 440, and UDM 440 may in turn notify NEF 460. According to an embodiment, the notification may include at least one of UE ID, session ID, DNN / S-NSSAI, and internal group ID. According to an embodiment, if AF 470 is set to dynamic in step 1 and a member change occurs, UDM 440 may perform steps 5 and 5a with respect to the changed UE.

[0088] In step 9, NEF 460 may request configuration related to UE 400 from the network functions (NFs) of AMF, PCF, and TSCTSF for each UE identified in step 8, and receive a response to the configuration result. According to an embodiment, the request and response messages may include at least one of a UE ID, an internal group ID, and configuration-related parameters.

[0089] In step 9a, NEF 460 may request service-related configuration from the SMF, PCF, and NF of TSCTSF for each UE identified in step 8a, and may receive a response to the result of the configuration. According to an embodiment, the request and response messages may include at least one of UE ID, PDU session ID, data network name (DNN) / single network slice selection assistance information (S-NSSAI), internal group ID, and configuration-related parameters.

[0090] The NEF 460 may perform aggregation based on an aggregation condition.

[0091] In step 10, the NEF 460 may aggregate responses according to the data processing (or collection) condition of the aggregation condition, and may send a provision response to the AF 470 based on the transmission condition of the aggregation condition. According to an embodiment, the provision response may include at least one of an external group ID, a transaction ID, a dynamic / static indication, and an aggregation condition. According to an embodiment, the provision response may be used for a group and may be a collection of responses for each individual UE. According to an embodiment, the provision response is used for monitoring for each UE and may be a collection of several responses for each UE.

[0092] Figure 5a and Figure 5b A flow chart of a group monitoring method according to an embodiment of the present disclosure is shown.

[0093] refer to Figure 5a and 5b , a wireless communication system for group monitoring may include a user equipment (UE) 500, a (R) AN 510, an AMF / PCF / TSCTSF 520, an SMF / PCF / TSCTSF 530, a UDM 540, a UDR 550, a NEF 560, and an AF 570.

[0094] In step 0, UE 500 may perform a registration procedure with 5GS.

[0095] In step 0a, UE 500 may establish a PDU session with 5GS.

[0096] In step 1, the AF 570 may send a monitoring request to the NEF 560. According to an embodiment, the monitoring request may include at least one of an external group ID (Ext-Group), a dynamic / static indication, an aggregation condition, and other parameters.

[0097] According to an embodiment, the external group ID (Ext-Group) may be a group ID used outside the 5G system.

[0098] According to an embodiment, when set to dynamic, the corresponding configuration can be applied to the changed member when a member change occurs. According to an embodiment, when set to static, the corresponding configuration targets the member at the time of the request, and if a member change occurs in the future, the configuration may not be reflected on the additional member.

[0099] According to one embodiment, the polymerization conditions are as above combined Figure 3 described.

[0100] In step 2, the NEF 560 may convert the external group ID received in step 1 into an internal group ID (Int-Group) used inside the 3GPP network. According to an embodiment, the NEF 560 may query the UDM 540 based on the external group ID and receive the internal group ID in response.

[0101] In step 2a, NEF 560 may perform a group query on UDR 550 to receive a UE list corresponding to the internal group ID.

[0102] In step 3 or 3a, the NEF 560 may request service-related configuration for event subscription from the network function (NF) of the SMF, PCF and / or TSC TSF of each UE identified in step 2a, and receive a response thereto.

[0103] According to an embodiment, the event subscription request and response messages may include at least one of UE ID, PDU session ID, data network name (DNN) / single network slice selection assistance information (S-NSSAI), internal group ID, and configuration-related parameters.

[0104] In step 4, the NEF 560 may send a registration / PDU session state subscription request to the UDM 540. According to an embodiment, the registration / PDU session state subscription request may include at least one of an internal group ID, a dynamic / static indication, and other parameters.

[0105] In step 5, the UDM 540 may send a request for registration status subscription for each UE in the group specified by the internal group ID to the AMF 520. The UDM 540 may receive a response to the registration status subscription request. According to an embodiment, the request / response for registration status subscription may include at least one of the UE ID and the internal group ID.

[0106] In step 5a, the UDM 540 may send a request for PDU session state subscription to the SMF 530 for each UE in the group specified by the internal group ID. The UDM 540 may receive a response to the PDU session state subscription request. According to an embodiment, the request / response for PDU session state subscription may include at least one of UE ID, internal group ID, PDU session ID, and DNN / S-NSSAI.

[0107] In step 6, the UDM 540 may send a registration / PDU session status subscription response to the NEF 560. According to an embodiment, the registration / PDU session status subscription response may include at least one of an internal group ID, a dynamic / static indication, and other parameters.

[0108] The NEF 560 may perform aggregation based on an aggregation condition.

[0109] In step 7, the NEF 560 may aggregate responses according to the data processing (or collection) conditions of the aggregation conditions, and may send a monitoring response to the AF 570 in consideration of the transmission conditions of the aggregation conditions. According to an embodiment, the monitoring response may include at least one of an external group ID, a transaction ID, a dynamic / static indication, and an aggregation condition. According to an embodiment, the monitoring response may be for a group and may be a collection of responses for each individual UE. According to an embodiment, the monitoring response is used to monitor each UE and may be a collection of several responses for each UE.

[0110] In step 8, if the registration state of the UE 500 changes, the AMF 520 may notify the UDM 540, and the UDM 540 may in turn notify the NEF 560. According to an embodiment, the notification may include at least one of the UE ID and the internal group ID. According to an embodiment, if the AF 570 is set to dynamic in step 1 and a member change occurs, the UDM 540 may perform steps 5 and 5a with respect to the changed UE.

[0111] In step 8a, if the PDU session state of UE 500 changes, SMF 530 may notify UDM 540, and UDM 540 may in turn notify NEF 560. According to an embodiment, the notification may include at least one of UE ID, session ID, DNN / S-NSSAI, and internal group ID. According to an embodiment, if AF 570 is set to dynamic in step 1 and a member change occurs, UDM 540 performs steps 5 and 5a with respect to the changed UE.

[0112] In step 9, NEF 560 may request a configuration for monitoring associated with UE 500 from the network functions (NFs) of AMF, PCF, and TSCTSF for each UE identified in step 8, and receive a response thereto. According to an embodiment, the request and response messages may include at least one of a UE ID, an internal group ID, and configuration-related parameters.

[0113] In step 9a, the NEF 560 may request the configuration related to the service for monitoring from the NF of the SMF, PCF, and TSCTSF for each UE identified in step 8a, and receive a response thereto. According to an embodiment, the request and response messages may include at least one of UE ID, PDU session ID, data network name (DNN) / single network slice selection assistance information (S-NSSAI), internal group ID, and configuration related parameters.

[0114] The NEF 560 may perform aggregation based on an aggregation condition.

[0115] In step 10, the NEF 560 may aggregate responses according to the data processing (or collection) conditions of the aggregation conditions, and may send a monitoring response to the AF 570 based on the transmission conditions of the aggregation conditions. According to an embodiment, the monitoring response may include at least one of an external group ID, a transaction ID, a dynamic / static indication, and an aggregation condition. According to an embodiment, the monitoring response may be for a group and may be a collection of responses for each individual UE. According to an embodiment, the monitoring response is used to monitor for each UE and may be a collection of several responses for each UE.

[0116] In step 11, when an event matching the UE-related monitoring request occurs, the NF of the AMF / PCF / TSCTSF 520 may send an event notification message related to the UE 500 to the NEF 560. According to an embodiment, the event notification message may include at least one of a UEID, an internal group ID, and an event ID.

[0117] In step 11a, when an event matching the service-related monitoring request occurs, the NF of the SMF / PCF / TSCTSF 530 may send an event notification message related to the UE 500 to the NEF 560. According to an embodiment, the event notification message may include at least one of a UE ID, an internal group ID, and an event ID.

[0118] The NEF 560 may perform aggregation based on an aggregation condition.

[0119] In step 12, the NEF 560 may aggregate the monitored events according to the data processing (or collection) condition of the aggregation condition, and may send a monitoring notification to the AF 570 based on the transmission condition of the aggregation condition. According to an embodiment, the monitoring notification may include at least one of an external group ID, a transaction ID, an event ID, a UEID, a dynamic / static indication, and an aggregation condition. According to an embodiment, the monitoring notification may be used for group monitoring and may be a collection of events for each individual UE. According to an embodiment, the monitoring notification is used for monitoring for each UE and may be a collection of events for each UE.

[0120] Figure 6 The configuration of a UE according to an embodiment of the present disclosure is shown.

[0121] like Figure 6 As shown, the UE of the present disclosure may include a transceiver 610, a memory 620, and a processor 630. The processor 630, the transceiver 610, and the memory 620 of the UE may operate according to the above-mentioned communication method of the UE. However, the components of the UE are not limited thereto. For example, the UE may include more or fewer components than the above-mentioned components. The processor 630, the transceiver 610, and the memory 620 may be implemented in the form of a single chip.

[0122] The transceiver 610 is generally referred to as a transmitter of the UE and a receiver of the UE, and can send and receive signals to / from a base station or a network entity. The signal sent / received by the base station may include control information and data. To this end, the transceiver 610 may include a radio frequency (RF) transmitter for up-converting and amplifying the transmitted signal, and an RF receiver for low-noise amplification of the received signal and down-converting the frequency of the received signal. However, this is only an example of the transceiver 610, and the components of the transceiver 610 are not limited to the RF transmitter and the RF receiver.

[0123] In addition, the transceiver 610 may include a wired / wireless transceiver, and may include various components for transmitting / receiving signals.

[0124] The transceiver 610 may receive a signal via a radio channel, output the signal to the processor 630 , and transmit the signal output from the processor 630 via the radio channel.

[0125] In addition, the transceiver 610 may receive a communication signal and output it to the processor, and transmit a signal output from the processor to a network entity through a wired / wireless network.

[0126] The memory 620 may store programs and data required for the operation of the UE. The memory 620 may store control information or data included in a signal obtained by the UE. The memory 620 may include a storage medium such as a ROM, RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media.

[0127] The processor 630 may control a series of processes to enable the UE to operate according to the above-mentioned embodiments. The processor 630 may include at least one processor. For example, the processor 630 may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls an upper layer (such as an application).

[0128] Figure 7 The configuration of the network entity according to an embodiment of the present disclosure is shown.

[0129] like Figure 7 As shown, the network entity of the present disclosure may include a transceiver 710, a memory 720, and a processor 730. The processor 730, the transceiver 710, and the memory 720 of the network entity may operate according to the above-mentioned communication method of the network entity. However, the components of the network entity are not limited thereto. For example, the network entity may include more or fewer components than the above-mentioned components. The processor 730, the transceiver 710, and the memory 720 may be implemented in the form of a single chip.

[0130] The network entity can be implemented as one of the above-mentioned (R)AN, AMF / PCF / TSCTSF, SMF / PCF / TSCTSF, UDM, UDR, NEF and AF.

[0131] The transceiver 710 is generally referred to as a receiver of a network entity and a transmitter of a network entity, and can send and receive signals to and from a UE or another network entity. In this case, the signal sent / received by the base station may include control information and data. To this end, the transceiver 710 may include a radio frequency (RF) transmitter for up-converting and amplifying the transmitted signal, and an RF receiver for low-noise amplifying the received signal and down-converting the frequency of the received signal. However, this is only an example of the transceiver 710, and the components of the transceiver 710 are not limited to the RF transmitter and the RF receiver. The transceiver 710 may include a wired / wireless transceiver, and may include various components for sending / receiving signals.

[0132] In addition, the transceiver 710 may receive a signal via a communication channel (eg, a radio channel), output the signal to the processor 730 , and transmit the signal output from the processor 730 via the radio channel.

[0133] In addition, the transceiver 710 may receive a communication signal and output it to the processor, and transmit the signal output from the processor to the UE or a network entity through a wired / wireless network.

[0134] The memory 720 may store programs and data required for the operation of the network entity. In addition, the memory 720 may store control information or data included in a signal obtained by the network entity. The memory 720 may include a storage medium such as a ROM, RAM, hard disk, CD-ROM, and DVD, or a combination of storage media.

[0135] The processor 730 may control a series of processes to enable the network entity to operate according to the above embodiments. The processor 730 may include at least one processor. The method according to the embodiment described in the specification or claims of the present disclosure may be implemented in hardware, software, or a combination of hardware and software.

[0136] The methods according to the embodiments described in the specification or claims of the present disclosure may be implemented in hardware, software, or a combination of hardware and software.

[0137] When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in the computer-readable storage medium are configured to be executed by one or more processors in an electronic device. One or more programs include instructions that enable the electronic device to perform the method according to the embodiment described in the specification or claims of the present disclosure.

[0138] The program (software module or software) may be stored in a random access memory, a non-volatile memory including a flash memory, a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage device, an optical disk ROM, a digital versatile disk DVD or other type of optical storage device or a tape cassette. Or the program may be stored in a memory composed of a combination of all or some of them. As each constituent memory, a plurality of memories may be included.

[0139] The program may be stored in an attachable storage device that can be accessed via a communication network (such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), or a storage area network (SAN), or a communication network configured by a combination thereof). The storage device may be connected to a device that performs an embodiment of the present disclosure via an external port. A separate storage device on a communication network may be connected to a device that performs an embodiment of the present disclosure.

[0140] In the above specific embodiments, the components included in the present disclosure are expressed in singular or plural form, depending on the specific embodiments provided. However, the singular or plural form is selected to be suitable for the context suggested for ease of description, and the present disclosure is not limited to singular or plural components. As used herein, the singular forms "a", "an", and "the" are intended to also include plural forms, unless the context clearly indicates otherwise.

[0141] Although specific embodiments of the present disclosure have been described above, various changes may be made thereto without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be defined by the appended claims and their equivalents.

[0142] Although the present disclosure has been described with various embodiments, various changes and modifications may be suggested to one skilled in the art. The present disclosure is intended to encompass such changes and modifications as fall within the scope of the appended claims.

Claims

1. A method for operating a network exposure function (NEF) in a wireless communication system, the method include: receiving a first message from an application function (AF) for a group of user equipment (UE) identified by an external group identifier (ID), the request message including the external group ID; sending a second message for requesting service authorization for the UE group to a unified data management (UDM) based on the external group ID; as well as A third message corresponding to the first message is sent to the AF.

2. The method according to claim 1, further comprising: include: The external group ID is mapped to an internal group ID used inside the network.

3. The method according to claim 2, further comprising: include: performing aggregation on the responses or reports based on the aggregation condition and the internal group ID, The aggregation condition includes a first condition for data transmission and a second condition for events.

4. The method according to claim 3, in, The first condition and the second condition are each set for each group or each UE.

5. The method according to claim 3, in, The first condition includes at least one of tracking area (TA) access information, registration area (RA) access information, cycle information, protection time information, and event counting information, and The second condition includes at least one of the number of events arriving, the maximum value of the events arriving, and event information.

6. The method according to claim 1, further comprising: include: Information for membership changes in the group is received from the UDM.

7. The method according to claim 1, in, The first message is related to group provisioning or group monitoring.

8. The method according to claim 1, in, the first message includes an indicator indicating whether the configuration included in the first message continues to apply to the changed member when the group member is changed, and Wherein, if the indicator is a first value (dynamic), the configuration included in the first message continues to apply to the changed member, and if the indicator is a second value (static), the configuration included in the first message is not applied to the changed member.

9. A method for operating an application function (AF) in a wireless communication system, the method include: sending a first message of a user equipment (UE) group identified by an external group identifier (ID) to a network exposure function (NEF), the request message including the external group ID; and receiving a second message corresponding to the first message from the NEF, The service authorization of the UE group is based on the external group ID.

10. The method according to claim 9, in, The external group ID is mapped to an internal group ID used inside the network.

11. The method according to claim 10, in, Aggregation of responses or reports is performed based on the aggregation condition and the internal group ID, and The aggregation condition includes a first condition for data transmission and a second condition for events.

12. The method according to claim 11, in, The first condition and the second condition are each set for each group or each UE, The first condition includes at least one of tracking area (TA) access information, registration area (RA) access information, cycle information, protection time information and event counting information, and The second condition includes at least one of the number of events arriving, the maximum value of the events arriving, and event information.

13. The method according to claim 11, in, The first message includes an indicator indicating whether the configuration included in the first message continues to apply to the changed member when the member is changed, and Wherein, if the indicator is a first value (dynamic), the configuration included in the first message continues to apply to the changed member, and if the indicator is a second value (static), the configuration included in the first message is not applied to the changed member.

14. A network exposure function (NEF) in a wireless communication system, include: Transceiver; as well as A processor configured to control: receiving a first message from an application function (AF) for a group of user equipment (UE) identified by an external group identifier (ID), the request message including the external group ID, sending a second message for requesting service authorization for the UE group to a unified data management (UDM) based on the external group ID, and A third message corresponding to the first message is sent to the AF.

15. An application function (AF) in a wireless communication system, include: Transceiver; as well as A processor configured to control: sending a first message for a group of user equipment (UE) identified by an external group identifier (ID) to a network exposure function (NEF), the request message including the external group ID, and receiving from the NEF a second message corresponding to the first message, The service authorization of the UE group is based on the external group ID.

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