Method and apparatus for distinguishing service experience analysis

Abstract

A method for providing service experience analytics in a network is described, the method comprising the steps of requesting or subscribing, by a service consumer, via a request or subscription, for service experience analytics associated with one or more applications and / or service experience analytics associated with one or more network slices from or to a Network Data Analysis Function (NWDAF) of the network, determining, based on the request or subscription, by the Network Data Analysis Function (NWDAF) whether to provide service experience analytics associated with one or more applications and / or service experience analytics associated with one or more network slices, and providing, by the Network Data Analysis Function (NWDAF) to the service consumer, based on a result of the determining step, the service experience analytics associated with one or more applications and / or service experience analytics associated with one or more network slices, the network being further described.

Description

Technical Field

[0001] The present invention relates to a network data analytics function (NWDAF) of a network.

Background Art

[0002] After the deployment of the fourth generation (4G) communication system, efforts have been made to develop an improved fifth generation (5G) communication system or a pre-5G communication system in order to meet the increasing demand for wireless data traffic.

[0003] The 5G communication system or the pre-SSG communication system is also referred to as a "beyond 4G network" or a "post long term evolution (post-LTE) system". The 5G communication system is considered to be implemented in a higher frequency (mmWave) band, for example, a 60 gigahertz (GHz) band, in order to achieve a faster data speed. Techniques such as beamforming, massive multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antennas have been discussed for the 5G communication system in order to reduce radio wave propagation loss and extend the transmission distance.

[0004] Furthermore, in the 5G communication system, development is underway to improve the system network based on next-generation small cells, cloud RAN (radio access network), ultra-dense networks, D2D (device-to-device) communication, wireless backhaul, moving networks, cooperative communication, CoMP (coordinated multi-points), and receiver-end interference rejection. In the 5G system, hybrid FSK (frequency shift keying), FQAM (Feher's quadrature amplitude modulation), and SWSC (sliding window superposition coding) have been developed as ACM (advanced coding modulation), while FBMC (filter bank multicarrier), NOMA (non-orthogonal multiple access), and SCMA (sparse code multiple access) have been developed as advanced access technologies.

[0005] The internet, a human-centered connectivity network where humans generate and consume information, is now evolving into the Internet of Things (IoT), where distributed entities like objects exchange and process information without human intervention. The Internet of Everything (IoE), a combination of IoT technology via cloud server connectivity and big data processing technology, is emerging. Technological elements such as interconnected networks where humans generate and consume information have evolved into the Internet of Things (IoT) with cloud servers possessing tangible IoT devices. As a result, sensor networks, M2M (machine-to-machine) communication, and MTC (machine-type communication) are currently being researched.

[0006] Such an IoT environment can provide intelligent internet technology services that create new value in human life by collecting and analyzing data generated between connected objects. The IoT, through the convergence and combination of existing information technology (IT) and diverse industrial applications, can be applied to a wide range of fields, including smart homes, smart buildings, smart cities, smart cars or connected vehicles, smart grids, healthcare, smart home appliances, and next-generation medical services. Accordingly, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, MTC, and M2M communication are also realized through beamforming, MIMO, and array antennas. The aforementioned application of cloud RAN as a big data processing technology can be seen as an example of the convergence of 5G technology and IoT technology. [Overview of the project] [Problems that the invention aims to solve]

[0007] The problem that this invention aims to solve is to provide a network data analytics function (NWDAF) for networks. One object of the present invention is, above all, to provide methods and networks for eliminating or mitigating, at least partially, some of the shortcomings of the prior art, whether identified herein or otherwise. For example, an object of the embodiments of the present invention is to provide a method for providing service experience analysis in a network that includes service experience analysis distinctions. [Means for solving the problem]

[0008] According to one aspect of the present invention, a method for distinguishing service experience analysis information is provided, which is performed by a network data analysis function (NWDAF) entity, and the method is provided by a service consumer entity, Related to service experience analysis information The stage of receiving a subscription or request message, Here, the subscription or request message includes analytical filter information, and the steps include: determining whether to provide service experience analytical information related to at least one application, network slice, or both based on the analytical filter information; and, based on the decision to provide the service experience analytical information, transmitting the service experience analytical information related to the at least one application, network slice, or both to the service consumer entity, wherein the step of transmitting the service experience analytical information is the service experience Based on the analysis filter information, which includes area of ​​interest information indicating the areas in which analysis information is subscribed to or requested, the service consumer entity is given the following: The aforementioned Network Slice Related to Service Experience Analysis information First spatial effectiveness information indicating the region to which it applies, The at least one of the above application Related to Service Experience Analysis information Includes second spatial effectiveness information indicating the region to which it applies, and The aforementioned At least one application and The aforementioned Related to any of the network slices The aforementioned The stage of sending service experience analysis information, The analysis filter information includes at least one application identification (ID) information, single network slice selection support information (S-NSSAI), or both. It is characterized by the following:

[0009] According to one aspect of the present invention, a network entity for distinguishing service experience analysis information comprises a memory, a transmitting / receiving unit, and at least one processor coupled to the memory and the transmitting / receiving unit, wherein the at least one processor receives information from a service consumer entity. Related to service experience analysis information Receive a subscription or request message, Here, the subscription or request message includes analysis filter information, and based on the analysis filter information, a decision is made as to whether or not to provide service experience analysis information related to at least one application, network slice, or both, and based on the decision that the service experience analysis information is provided, the service experience analysis information Based on the analysis filter information, which includes area of ​​interest information indicating the areas to which the service consumer entity is subscribed to or requested, The aforementioned Network Slice Related to Service Experience Analysis information First spatial effectiveness information indicating the region to which it applies, The at least one of the above application Related to Service Experience Analysis information Includes second spatial effectiveness information indicating the region to which it applies, and The aforementioned At least one application and The aforementionedConfigure to send service experience analytics information relevant to any network slice. Furthermore, the analysis filter information includes at least one application identification (ID) information, single network slice selection support information (S-NSSAI), or both. It is characterized by the following: [Brief explanation of the drawing]

[0010] For a more complete understanding of the present invention and its advantages, the following description, linked to the accompanying drawings in which similar reference numbers indicate similar parts, is hereby referred to. [Figure 1] This is a block diagram showing a schematic configuration of a network entity according to an embodiment of the present invention. [Modes for carrying out the invention]

[0011] According to one aspect of the present invention, a method for providing service experience analysis in a network is provided, the method comprising: a step of a service consumer requesting or subscribing to a network data analytics function (NWDAF) of the network, via request or subscription, service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices; a step of determining, based on the request or subscription, whether or not to provide the NWDAF with service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices; and a step of providing the NWDAF with service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the result of the determination step.

[0012] In one embodiment of the present invention, the request or subscription includes (i) an analysis ID set to "service experience", (ii) one or more globally unique subscription permanent identifiers (SIPIs), one or more internal group identifiers, or a target of an analysis report selected from "any UE", (iii) analysis filter information, and optionally (iv) an indication of the maximum number of objects and the maximum number of supis. Based on the request or subscription, the NWDAF determines whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices. The step of determining whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the target of the analysis report and the analysis filter information indicated in the request or subscription by the NWDAF includes the step of determining whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the target of the analysis report and the analysis filter information indicated in the request or subscription by the NWDAF. In one embodiment of the present invention, the analysis filter information defines each application ID that identifies one or more applications for which service experience analysis is requested or subscribed. Based on the target of the analysis report and the analysis filter information indicated in the request or subscription by the NWDAF, the step of determining whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices includes the step of determining by the NWDAF to provide service experience analysis related to one or more applications identified by each application ID.

[0013] In one embodiment of the present invention, the analysis filter information defines each S-NSSAI (single network slice selection assistance information) that identifies one or more network slices for which a service experience analysis is requested or subscribed to, and the step of NWDAF deciding whether or not to provide a service experience analysis related to one or more applications and / or a service experience analysis related to one or more network slices based on the target of the analysis report indicated in the request or subscription and the analysis filter information includes the step of NWDAF deciding to provide a service experience analysis related to one or more network slices identified by each S-NSSAI. In one embodiment of the present invention, the step of NWDAF determining whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the target of the analysis report and analysis filter information indicated in the request or subscription includes, if NWDAF is unable to determine whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the request or subscription, the step of NWDAF deciding to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices.

[0014] In one embodiment of the present invention, when a service consumer requests or subscribes to service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices from or to the NWDAF of the network, if the target of the analysis report or different values of the analysis filter information are required for separate requests or separate subscriptions, the service consumer requests or subscribes to service experience analysis related to one or more applications and service experience analysis related to one or more network slices from or to the NWDAF of the network via separate requests or separate subscriptions. This stage includes the step of making such requests or subscriptions. In one embodiment of the present invention, the stage where the NWDAF determines whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on a request or subscription includes the stage where the NWDAF determines to provide service experience analysis related only to one or more applications or service experience analysis related only to one or more network slices based on the request or subscription.

[0015] In one embodiment of the present invention, the stage where the NWDAF provides service experience analysis related to one or more applications to the service consumer includes the stage where the NWDAF provides service experience analysis related to one or more applications to the service consumer. The service experience analysis related to one or more applications includes service experience statistics related to one or more applications and / or service experience predictions related to one or more applications. In one embodiment of the present invention, the service experience statistics related to one or more applications and / or the service experience predictions related to one or more applications each include their own spatial validity and / or their own expiration period.

[0016] In one embodiment of the present invention, service experience statistics related to one or more applications, and / or service experience forecasts related to one or more applications each include service experience statistics related to each of the one or more applications, and / or service experience forecasts related to each of the one or more applications. In one embodiment of the present invention, the step of providing a service consumer with a service experience analysis related to one or more network slices by NWDAF includes the step of providing a service consumer with a service experience analysis related to one or more network slices by NWDAF, wherein the service experience analysis related to one or more network slices includes service experience statistics related to one or more network slices and / or service experience predictions related to one or more network slices.

[0017] In one embodiment of the present invention, service experience statistics related to one or more network slices, and / or service experience forecasts related to one or more network slices, each include their own spatial effectiveness and / or their own effective period. In one embodiment of the present invention, service experience statistics related to one or more network slices, and / or service experience forecasts related to one or more network slices each include service experience statistics related to each of the one or more network slices, and / or service experience forecasts related to each of the one or more network slices, and / or service experience statistics related to one or more applications, and / or service experience forecasts related to one or more applications each include service experience statistics related to each of the one or more applications, and / or service experience forecasts related to each of the one or more applications.

[0018] In one embodiment of the present invention, service experience statistics related to an application, or service experience statistics related to a network slice, are provided individually per UE or per group of UEs, or are averaged across applications or over a set of applications on a network slice.

[0019] According to one aspect of the present invention, a network is provided including a network data analytics function (NWDAF) and a service consumer, wherein the service consumer is configured to request or subscribe to service experience analytics related to one or more applications and / or service experience analytics related to one or more network slices from or to the NWDAF via request or subscription, and the NWDAF is configured to decide whether or not to provide service experience analytics related to one or more applications and / or service experience analytics related to one or more network slices based on the request or subscription, and to provide the service consumer with service experience analytics related to one or more applications and / or service experience analytics related to one or more network slices, depending on the result of the decision.

[0020] Before providing a detailed explanation, it would be beneficial to present the following definitions of specific words and phrases used throughout this patent document. The terms “include” and “comprise” and their derivatives mean “inclusion” without restriction, and the term “or” comprehensively means “and / or,” and its derivatives mean not only “related to” and “associated with,” but also “to include,” “to be contained in,” “to be interconnected with,” “to contain,” “to be included in,” “to be connected to or with,” “to be coupled to or with,” “to be able to communicate with,” “to cooperate with,” “to interpose with,” “to juxtapose with,” “to be close to,” “to be coupled to or with,” “to have,” and “to have the nature of,” and the term “controller” means any device, system or part thereof that controls at least one operation, such a device may also be embodied by hardware, firmware or software, or a combination of at least two parts thereof. It should be noted that the functions associated with any particular control unit may be local or remote, centralized or distributed.

[0021] Furthermore, the various functions described below are embodied or supported by one or more computer programs, each of which is formed from computer-readable program code and recorded on a computer-readable medium. The terms “Application” and “Program” refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof that are suitable for embodiment in program code readable by a suitable computer. The phrase "computer-readable program code" includes any type of computer code, including source code, purpose code, and executable code. The phrase "computer-readable media" includes any type of media that can be accessed by a computer, such as ROM (read-only memory), RAM (random access memory), hard disk drives, CDs (compact discs), DVDs (digital video discs), or any other type of memory. A “non-temporary” computer-readable medium eliminates wired, wireless, optical, or other communication links that transmit temporary electrical or other signals. The non-temporary computer-readable media include media on which data can be permanently stored, and media on which data can be stored and later overwritten, such as rewritable optical discs or erasable memory devices.

[0022] Definitions relating to specific words and phrases are provided throughout this specification, and those skilled in the art should understand that, in most but many cases, such definitions apply to the past and future use of the words and phrases thus defined. Figure 1, discussed below, and the various embodiments used in this specification to illustrate the principles of the present invention are illustrative only and should not be construed as limiting the scope of this disclosure in any way. Those skilled in the art will understand that the principles of the present invention can be embodied in any appropriately arranged system or device. The present invention provides methods as described in the appended claims. Furthermore, what is provided is a network. Other features of the present invention will become clear from the dependent claims and the subsequent description.

[0023] The network data analytics function (NWDAF) provides network data analytics service for 5G networks or 5G systems as defined in "3GPP® TS 23.288 (Rel-16 NWDAF)," which is entirely included by reference in this invention. The observed service experience analysis is supported by "Rel-16 NWDAF". It was agreed to use the same analysis type and provide service experience analysis that is relevant to the application and network slice. Service experience analysis is derived using UE level measurements, and both types (i.e., service experience analysis related to applications and related to network slices) can use a single UE, a group of UEs, or all UEs (using applications / slices). However, it is not meaningful to use a single UE metric to derive a network slice service experience. However, it is not possible to distinguish between the two types of service experience analysis based on the subscription / request service definition. Furthermore, multiple applications not located on the same network slice are not supported. Therefore, we need to improve the provision of service experience analysis.

[0024] <Method> A first aspect of the present invention provides a method for providing service experience analysis in a network, the method comprising the following: The stage in which a service consumer requests or subscribes to, via request or subscription, service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices from, or to, the Network Data Analysis Function (NWDAF) of the network. Based on a request or subscription, NWDAF decides whether or not to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices. Based on the results of the decision-making stage, NWDAF provides service consumers with service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices.

[0025] Thus, service experience analysis distinctions related to NWDAF are provided so that the NWDAF can determine, upon request or subscription, whether or not to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices. It should be understood that a request or subscription may not explicitly identify, or will not explicitly identify, one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed. In one example, a request or subscription does not explicitly identify one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed. In other words, a request or subscription can at best implicitly identify one or more applications and / or one or more network slices, and the one or more applications and / or one or more network slices to which a service experience analysis is requested or subscribed must be determined (i.e., established, resolved) from the request or subscription.

[0026] In one example, a request or subscription only implicitly identifies, at best, one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed. In other words, the NWDAF distinguishes between two types of service experience analysis (i.e., for applications and for network slices) and enables the output of the service experience analysis by applying analysis to all data inputs and data outputs so that the distinction can be made by the NWDAF. In other words, the NWDAF selectively provides service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices, based on requests or subscriptions (e.g., "by request or subscription," "using a request or subscription," "determined from a request or subscription").

[0027] In one example, the service consumer is a network function (NF) or network operations, administration, and maintenance (OAM). In summary, according to the first aspect, the method also includes, above all, the following: 1. Service consumers, i) Service experience analysis related to the application, and ii) When requesting / subscribing to a service experience analysis related to network slices, the specifications of required and non-required event filters and / or 2. When service experience analysis is requested / subscribed to for an application and for a network slice, a mechanism to allow differentiation of areas of interest (e.g., if two types of analysis are requested for different areas of interest, two requests / subscriptions will be required instead), and / or 3. NWDAF is, i) Service experience analysis related only to network slices, ii) Service experience analysis related only to the application, and iii) Application of output analysis formatting (adaptation) that allows for the provision of service experience analysis relevant to either network slices and applications, and / or 4. Other further minor alignments (e.g., unfeasibility of providing service experience related to a network slice based on only one UE / SUPI, or the possibility of providing multiple service experience analyses related to multiple applications without the linkages related to network slice analysis).

[0028] In particular, according to "Rel-16 NWDAF", 1. There is no way to distinguish between the two types of service experience analysis based on the subscription / request service definition. 2. The input requirements associated with each type of analysis subscription / request are not mentioned, and as a result, the two types of analysis cannot be clearly distinguished. 3. When a service consumer requests a service experience analysis related to both an application and a network slice, multiple applications not located on the same network slice will not be adequately supported. 4. The output analysis table must be designed to consider only one type, or both of them. 5. Location Considerations: If the application and network slice-related areas of interest are not the same, it is necessary to specify what to do (this is missing from Rel-16 NWDAF). 6. Since "any UE" can be applied to the application, it remains necessary to identify how NWDAF will know when the "UE ID" needs to be looked up.

[0029] <Request or Subscribe> The method also includes a service consumer requesting or subscribing (and referred to as requesting / subscribing) service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices from or to the NWDAF of the network via request or subscription. The method should therefore be understood to include the following: The stage in which a service consumer requests, via a request, a service experience analysis related to one or more applications and / or a service experience analysis related to one or more network slices from the network's NWDAF, or The stage in which a service consumer subscribes to the network's NWDAF via subscription to service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices.

[0030] In one example, a request or subscription specifies the analysis filter information and the target of the analysis report. In other words, the method provides service experience analyses related to one or more applications and / or related to one or more network slices, using, for example, analysis filter information for determining whether or not to provide service experience analyses related to one or more applications and / or related to one or more network slices, and a target for analysis reporting for defining the output of service experience analyses related to one or more applications and / or related to one or more network slices.

[0031] In one example, a request or subscription would instruct the following: (i) Analysis ID set in "Service Experience", (ii) Targets of the analysis report selected from one or more globally unique subscription permanent identifiers (SUPIs), one or more internal group identifiers, or "any UE", (iii) Analysis filter information, and optionally, (iv) The maximum number of objects, and the maximum number of SUPIs, The step by which NWDAF decides whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on a request or subscription, includes the step by which NWDAF decides whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on the target of the analysis report and analysis filter information indicated in the request or subscription.

[0032] In one example, the step by which a service consumer requests or subscribes to a service experience analysis relating to one or more applications and / or a service experience analysis relating to one or more network slices from or to the Network's NWDAF via request or subscription includes the step by which a service consumer requests or subscribes to a service experience analysis relating to one or more applications and / or a service experience analysis relating to one or more network slices from or to the Network's NWDAF via separate request or subscription, if different values ​​of the analysis report target or analysis filter information are requested for separate requests or separate subscriptions. For example, if service experience related to both applications and network slices is required, but the target of the analysis report or the analytical filter information values ​​(e.g., areas of interest) need to be different, separate subscriptions / requests can also be made by the service consumer. In other words, the method manages requests or subscriptions associated with one or more network slices, and / or one or more applications, each having different analytical filter information values ​​for each request or subscription.

[0033] As an example, an update to the "Rel-16 NWDAF" specification that enables differentiation by the method according to the first embodiment is described as follows: "Rel-16 NWDAF" identifies how NWDAF can provide service consumers with an analysis of observed service experiences (i.e., the variance and / or mean of observed service MoS that indicates the service MOS allocation related not only to services like audiovisual streaming, but also to non-audiovisual streaming services such as V2X and web browsing services) in the form of statistics or forecasts. The service consumer is an NF (e.g., PCF) or OAM.

[0034] The observed service experience analysis can provide one or more of the following: • Service experience related to network slices: Service experience related to a given application, set of applications, or any group of UEs associated with any application (i.e., all applications) in a network slice, or any UE. • Service experience related to applications: Service experience related to an UE, a group of UEs, or any UE in an application or a set of applications. As a result, the observed service experience in "Rel-16 NWDAF" can be delivered individually per UE or per group of UEs, or averaged across applications or over a set of applications on a network slice.

[0035] The distinction by the first method is that the service consumer of those analyses requests or subscribes to them. (i) Analysis ID set in "Service Experience", (ii) Target of analysis report: one or more SUPIs or internal group identifiers, or "any UE", (iii) For example, analysis filter information as defined in Table 1, and (iv) This can be optionally achieved by updating the "Rel-16 NWDAF" specification to specify the maximum number of objects and the maximum number of SUPIs.

[0036] <Analysis Filter Information> Service experience analysis distinction can be achieved by identifying which event filters in the analysis filter information are essential, as explained below. In one example, the analysis filter information defines each application ID that identifies one or more applications for which service experience analysis is requested or subscribed. The step in which the NWDAF determines whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on the target of the analysis report and analysis filter information indicated in the request or subscription, includes the step in which the NWDAF decides to provide service experience analysis related to one or more applications identified by their respective application IDs.

[0037] In other words, if one or more application IDs that identify one or more applications are defined by the analysis filter information, then service experience analysis will be provided for one or more applications identified by each application ID. In other words, if the service experience analysis must be provided for one or more applications, then one or more application IDs are required. In other words, the method distinguishes which analytical filter information is essential for each type of service experience analysis (e.g., application ID related to application service experience, S-NSSAI related to network slice service experience). It must be understood that if one or more application IDs are defined by the analysis filter information, the remainder of the analysis filter information applies to any network slice associated with one or more applications identified by each application ID (i.e., all network slices). Conversely, if the application ID is not defined by the analysis filter information, it must be understood that the remainder of the analysis filter information applies to any application associated with one or more network slices identified by each S-NSSAI (i.e., all applications).

[0038] In one example, the analysis filter information defines each S-NSSAI that identifies one or more network slices for which service experience analysis is requested or subscribed. The step in which NWDAF decides whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on the target of the analysis report and analysis filter information indicated in the request or subscription, includes the step in which NWDAF decides to provide service experience analysis related to one or more network slices identified by each S-NSSAI.

[0039] In other words, if one or more S-NSSAIs that identify one or more network slices are defined by the analysis filter information, then service experience analysis is provided for one or more network slices identified by each S-NSSAI. In other words, if the service experience analysis must be provided for one or more network slices, then one or more S-NSSAIs are required. It must be understood that if one or more network slices are defined by the analysis filter information, the remainder of the analysis filter information applies to any application associated with one or more network slices identified by each S-NSSAI (i.e., all applications). Conversely, it must be understood that if S-NSSAI is not defined by the analysis filter information, the remainder of the analysis filter information will apply to any network slice associated with one or more applications identified by their respective application IDs (i.e., all network slices).

[0040] If one or more application IDs are defined by the analysis filter information, and one or more network slices are defined by the analysis filter information, it must be understood that the remainder of the analysis filter information applies to any network slices associated with one or more applications identified by each application ID (i.e., all network slices), and to any applications associated with one or more network slices identified by each S-NSSAI (i.e., all applications). In one example, the analysis filter information defines the areas of interest for which service experience analysis is requested or subscribed. The step of providing service consumers with service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices via NWDAF includes the step of providing service consumers with service experience analyses related to one or more applications related to their area of ​​interest and / or service experience analyses related to one or more network slices via NWDAF.

[0041] <Decision-making stage> The method includes a step of determining whether, based on a request or subscription, NWDAF will provide service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices. In other words, the NWDAF distinguishes whether or not it provides the following upon request or subscription: 1) Service experience analysis related to one or more applications, 2) Service experience analysis related to one or more network slices, or 3) Service experience analysis related to one or more applications, and service experience analysis related to one or more network slices.

[0042] It should be understood that a request or subscription may not explicitly identify, or will not explicitly identify, one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed. In one example, a request or subscription does not explicitly identify one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed. In other words, a request or subscription can at best implicitly identify one or more applications and / or one or more network slices, and the one or more applications and / or one or more network slices to which a service experience analysis is requested or subscribed must be determined (i.e., established, resolved) from the request or subscription. In one example, a request or subscription only implicitly identifies, at best, one or more applications and / or one or more network slices for which a service experience analysis is requested or subscribed.

[0043] In one example, the step by which the NWDAF determines whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on the target of the analysis report and analysis filter information indicated in the request or subscription, includes the step by which the NWDAF determines to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, if the NWDAF is unable to determine whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices based on the request or subscription. For example, if an application ID is not provided, the rest of the analysis filter information will be applied to any application (i.e., all applications) in one or more network slices. Conversely, if, for example, S-NSSAI is not provided, the remaining analysis filter information will be applied to any network slice associated with one or more applications (i.e., all network slices).

[0044] In other words, the method can determine that a service experience analysis should be provided even if the NWDAF cannot determine (e.g., identify) whether a request or subscription relates to one or more applications or to one or more network slices. For example, the step of NWDAF deciding whether to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices, based on request or subscription, includes the step of NWDAF deciding to provide service experience analysis related to only one or more applications, or service experience analysis related to only one or more network slices, based on request or subscription.

[0045] <Provision stage> The method includes, based on the results of the determination step, providing the service consumer with a service experience analysis related to one or more applications and / or a service experience analysis related to one or more network slices via NWDAF. In one example, the result of the decision-making stage identifies that NWDAF will provide service consumers with service experience analysis related to one or more applications, for example, only for one or more applications. In one example, the result of the decision-making stage identifies that NWDAF will provide service consumers with service experience analysis related to one or more network slices, for example, only for one or more network slices. In one example, the outcome of the decision-making stage identifies that NWDAF provides service consumers with a service experience analysis related to one or more applications and one or more network slices.

[0046] In one example, the step by which NWDAF provides service consumers with service experience analyses related to one or more applications and / or one or more network slices, based on the results of the decision-making step, includes the step of notifying service consumers of the service experience analyses, as specified in "3GPP TS 23.288". For example, NWDAF may, or must, notify consumers of the results of the analysis, as specified in "3GPP TS 23.288".

[0047] In one example, the step of providing a service consumer with a service experience analysis related to one or more applications by NWDAF includes the step of providing a service consumer with a service experience analysis related to one or more applications, and the service experience analysis related to one or more applications includes service experience statistics related to one or more applications and / or service experience forecasts related to one or more applications. In other words, the service experience analysis includes service experience statistics and / or service experience forecasts related to one or more applications.

[0048] In one example, service experience statistics related to one or more applications, and / or service experience forecasts related to one or more applications, each include their own spatial effectiveness and / or their own lifespan. In other words, the spatial effectiveness (i.e., the area to which those service experience analyses relating to one or more applications are applied) and / or the effective period (i.e., the effective period to which those service experience analyses relating to one or more applications are applied, as defined in "REL-16 NWDAF") can be defined.

[0049] In one example, service experience statistics related to one or more applications, and / or service experience forecasts related to one or more applications, each include service experience statistics related to each of the one or more applications, and / or service experience forecasts related to each of the one or more applications. In other words, these service experience analyses are also provided for each of the one or more applications, for example, 0 applications or max applications (i.e., 0...max, where max is the maximum allowed size of the list).

[0050] In the existing system, service experience statistics and service experience predictions include a single list, and thereafter, even if the service experience analysis is requested for a single application, the service experience analysis is instead provided, along with others, for both that application and the network slices used for that application, by the method according to the first embodiment. If it is determined that the service experience analysis is provided only for a single application, the size of the network slice list is "0". Similarly, if it is decided that the service experience analysis will be provided for only a single network slice, the size of the application list will be "0". In other words, the method provides a service experience analysis that distinguishes between service experience related to network slices and service experience related to applications.

[0051] In one example, the step of providing a service consumer with a service experience analysis related to one or more network slices by NWDAF includes the step of providing a service consumer with a service experience analysis related to one or more network slices by NWDAF, and the service experience analysis related to one or more network slices includes service experience statistics related to one or more network slices and / or service experience forecasts related to one or more network slices. In other words, the service experience analysis includes service experience statistics and / or service experience forecasts related to one or more network slices. In one example, service experience statistics related to one or more network slices, and / or service experience forecasts related to one or more network slices, each include its own spatial effectiveness and / or its own lifespan. In other words, the spatial effectiveness (i.e., the area to which those service experience analyses related to one or more network slices apply) and / or the lifespan (i.e., the lifespan to which those service experience analyses related to one or more network slices apply, as defined in "REL-16 NWDAF") may be defined.

[0052] In one example, service experience statistics and / or service experience forecasts related to one or more network slices each include service experience statistics and / or service experience forecasts related to each of the one or more network slices. In other words, these service experience analyses are provided for each network slice within one or more network slices, for example, "0" to "max" network slices (i.e., 0...max, where max is the size of the list).

[0053] Currently, the service experience statistics and service experience forecasts include a single list, so that even if the service experience analysis is requested for a single network slice, the service experience analysis is provided for both that network slice and all applications that use that network slice. Alternatively, according to the method of the first embodiment, if it is determined that the service experience analysis is provided only for a single network slice, the size of the application list is "0". Similarly, if it is determined that the service experience analysis will be provided for only a single application, the size of the network slice list will be "0". In other words, the method provides a service experience analysis that distinguishes between service experience related to network slices and service experience related to applications. In one example, service experience statistics related to an application, or service experience statistics related to a network slice, may be provided individually per UE or per group of UEs, or averaged across applications or over a set of applications on a network slice.

[0054] <Network> A second aspect of the present invention provides a network including a network data analysis function (NWDAF) and service consumers, Service consumers are configured to request or subscribe to service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices from or to the NWDAF via request or subscription. NWDAF is Based on requests or subscriptions, we will decide whether or not to provide service experience analysis related to one or more applications and / or service experience analysis related to one or more network slices. The system is configured to provide service consumers with service experience analyses related to one or more applications and / or service experience analyses related to one or more network slices, based on the results of the decisions made.

[0055] The results of the network, NWDAF, service consumers, requesting, subscribing, requesting, subscribing, deciding, providing, and / or deciding are as described in the first aspect. The network is configured to embody any method step as described in the first embodiment. In one example, the network includes and / or is a 5G network. In one example, the service consumer is a network function (NF), or the operation, management, and maintenance of a network (OAM).

[0056] Throughout this specification, the terms “comprising” or “comprise” mean that the specified components are included, but not that other components are excluded. The terms "consisting essentially of" or "consisting essentially of" include the explicitly stated components but exclude materials present as impurities, unavoidable materials present as a result of the processes used to provide the components, and other components added for purposes other than achieving the technical effects of this disclosure, such as colorsants. "Consisting of" or "consisting of" means that a specified component is included, but other components are excluded.

[0057] Where appropriate and in context, the use of the terms “including” or “including” may include, or be assumed to include, the meaning of “essentially constituted by” or “essentially constituted by,” and may include, or be assumed to include, the meaning of “consisted of” or “consisted by.” The optional features described herein may be used individually or in combination with each other, as appropriate, and in particular, in combinations as described in the claims. Optional features relating to each aspect or exemplary embodiment of the present invention are, where appropriate, also applicable to all other aspects or exemplary embodiments of the present invention, as described herein. In other words, a person skilled in the art who has read this specification should consider the optional features relating to each aspect of the present invention, or to exemplary embodiments, to be interchangeable and combinable between different aspects and exemplary embodiments.

[0058] <Analysis Filter Information> Table 1 below provides an example of how analytical filter information is applied in NWDAF to enable service experience analytical distinction. [Table 1] Note 1: If an application ID is not provided, the rest of the analysis filter information will be applied to any application in the network slice (i.e., all applications). Note 2: Unless the target of the analysis report is set to "any UE", the area of ​​interest is not required to be about application service experience.

[0059] • The analysis target period, which indicates the time window for which statistics or forecasts are required. • In subscriptions, the notification correlation ID and notification target address. NWDAF must inform consumers of the results of the analysis, as specified in "3GPP TS 23.288". NWDAF collects network data from AFs (directly or via NEFs) and other 5GCNFs to calculate statistics and forecasts related to observed service experiences and provide them to consumer NFs or consumer OAMs.

[0060] Based on the analysis filter information and analysis report targets provided by the service consumer in the analysis subscription or analysis request, NWDAF will: i) Applications, ii) Network slice, iii) Determine whether or not the service experience analysis should be communicated for both the application and the network slice. The specific details of the distinction vary depending on the specific example. While service experience relevant to both applications and network slices is required, if different targets for analytical reporting or analytical filter information values ​​(e.g., areas of interest) are necessary, separate subscriptions / requests can also be made by the service consumer.

[0061] <Output Analysis> As an example, an update to the "Rel-16 NWDAF" specification that enables differentiation by the method according to the first embodiment is described as follows: NWDAF services, as defined in "Rel-16 NWDAF," are used to expose the analysis. • Service experience statistics are defined in Table 2 below, as defined in "Rel-16 NWDAF". • Service experience prediction information is defined in Table 3 below, as defined in "Rel-16 NWDAF". This information may be updated, as detailed below.

[0062] [Table 2] [Table 3] Note 1: Based on the service experience analysis distinction, NWDAF can provide output analysis in Tables 2 and 3, which correspond to network slices, applications, or both. Note 2: If multiple network slice instances are not deployed for S-NSSAI, or if the "NSI ID" is not available, only one network slice instance service experience entry will be provided. In that case, the "NSI ID" will not be provided, and the network slice instance service experience will point to the service experience associated with S-NSSAI. Note 3: The SUPI list and ratios in the service experience information related to the application may be omitted if the parameters are provided and have the same values ​​in the service experience information related to the slice instance to which the application belongs.

[0063] The number of service experiences and SUPIs are limited, respectively, by the maximum number of subjects and the maximum number of SUPIs provided as part of the analytical reporting information by NWDAF service consumers.

[0064] Figure 1 is a block diagram showing a schematic configuration of a network entity according to an embodiment of the present invention. Referring to Figure 1, the network entity 100 includes a processor 110, a transceiver 120, and a memory 130.

[0065] However, not all of the components shown in the diagram are essential. The network entity 100 may be represented by more or fewer components than those shown in Figure 1. Furthermore, the processor 110, the transceiver unit 120, and the memory 130 can also be realized as a single chip in other embodiments. Network entity 100 may correspond to the aforementioned NWDAF. The aforementioned components will be explained in more detail.

[0066] The processor 110 may include one or more processors or other processing devices that control the provided functions, processes and / or methods. The operation of the network entity 100 is also embodied by the processor 110.

[0067] The transmitting / receiving unit 120 includes an RF transmitter that upconverts and amplifies the transmitted signal, and an RF receiver that downconverts the frequency of the received signal. However, according to other embodiments, the transmitting and receiving unit 120 may be embodied by more or fewer components than those shown in the figure. The transmitting / receiving unit 120 is connected to the processor 110 and transmits and / or receives signals. The signal includes control information and data. Furthermore, the transmitting / receiving unit 120 receives signals via a wireless channel and outputs the signals to the processor 110. The transmitting / receiving unit 120 transmits the signal output from the processor 110 via a wireless channel.

[0068] Memory 130 stores control information or data contained in signals acquired by network entity 100. The memory 130 stores at least one instruction, protocol, or parameter for a function, process, and / or method provided in conjunction with the processor 110. Memory 130 includes ROM and / or RAM and / or hard disk and / or CD-ROM (compact disc read-only memory) and / or DVD (digital versatile disc) and / or other storage devices.

[0069] While preferred embodiments have been illustrated and described, it will be understood by those skilled in the art that various changes and modifications can be made without exceeding the scope of this disclosure, as defined in the appended claims and as described above. With regard to this application, attention is paid to all papers and documents filed concurrently with or prior to this specification and made available for public viewing together with this specification, and the contents of all such papers and documents are incorporated herein by reference. Any of the features disclosed herein (including any appended claims and drawings), and / or any of the steps of any method or process disclosed herein, may be combined with any combination of such features and / or steps, with the exception of any mutually exclusive combinations, at most some of them.

[0070] Each feature disclosed herein (including any appended claims and drawings) may also be replaced by an identical, equivalent, or similar alternative feature unless expressly otherwise noted. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a general set of equivalent or similar features. The present invention is not limited to the details of the embodiments described above. The present invention extends to any one or any combination of any novel features disclosed herein (including any appended claims and drawings), or to any one or any combination of any novel steps of any method or process as so disclosed. Although the present invention has been described by various embodiments, various changes and modifications will be proposed to those skilled in the art. This disclosure is intended to include such changes and modifications that fall within the scope of the claims. [Explanation of Symbols]

[0071] 100 Network Entities 110 processors 120 Transmitter / Receiver Unit 130 memory

Claims

1. A method for distinguishing service experience analysis information performed by a Network Data Analysis Function (NWDAF) entity, The step of receiving a subscription or request message related to service experience analysis information from a service consumer entity, Here, the subscription or request message includes analysis filter information, Based on the aforementioned analysis filter information, a step is to determine whether or not to provide service experience analysis information related to at least one application, network slice, or both. The step of transmitting the service experience analysis information to the service consumer entity, based on the decision that the service experience analysis information is provided, the service experience analysis information relating to the at least one application, the network slice, or both, The step of transmitting the aforementioned service experience analysis information is: The process includes the step of transmitting to the service consumer entity the service experience analysis information relating to both the at least one application and the network slice, which includes first spatial effectiveness information indicating the region to which the service experience analysis information relating to the network slice is applied, and second spatial effectiveness information indicating the region to which the service experience analysis information relating to the at least one application is applied, based on the analysis filter information which includes region of interest information indicating the region to which the service experience analysis information relating to the network slice is applied, and based on the analysis filter information which includes region of interest information indicating the region to which the service experience analysis information relating to the at least one application is applied, A method for distinguishing service experience analysis information, characterized in that the analysis filter information includes at least one application identification (ID) information, single network slice selection support information (S-NSSAI), or any of the above.

2. The step of receiving a subscription or request message related to the aforementioned service experience analysis information is: If the value of the analysis filter information related to at least one application is different from the value of the analysis filter information related to the network slice, A method for distinguishing service experience analysis information according to claim 1, characterized by including the step of separately receiving from the service consumer entity a subscription or request message relating to the service experience analysis information relating to the at least one application and a subscription or request message relating to the service experience analysis information relating to the network slice.

3. The step of transmitting the service experience analysis information relating to at least one of the applications and the network slice is: If the NWDAF entity cannot distinguish whether, based on the subscription or request message, it provides service experience analysis information related to at least one application, service experience analysis information related to the network slice, or service experience analysis information related to all of the above, A method for distinguishing service experience analysis information according to claim 1, further comprising the step of providing service experience analysis information relating to at least one of the applications and network slices.

4. The service experience analysis information relating to at least one of the aforementioned applications and the network slice is, First validity period information related to the service experience analysis information related to the network slice, A method for distinguishing service experience analysis information according to claim 1, characterized by including a second validity period information relating to the service experience analysis information relating to the service experience analysis information relating to at least one application.

5. A network entity that distinguishes service experience analysis information, Memory and Transmitter / receiver unit, The system comprises the memory and at least one processor coupled to the transmitting / receiving unit, The aforementioned at least one processor is We receive subscription or request messages related to service experience analytics information from service consumer entities. Here, the subscription or request message includes analysis filter information, Based on the aforementioned analysis filter information, a decision is made as to whether or not to provide service experience analysis information related to at least one application, network slice, or both. Based on the decision that the service experience analysis information is provided, and based on the analysis filter information which includes area of ​​interest information indicating areas where the service experience analysis information is subscribed to or requested, the service consumer entity is configured to receive the service experience analysis information relating to both the at least one application and the network slice, which includes first spatial effectiveness information indicating areas to which the service experience analysis information relating to the network slice is applied, and second spatial effectiveness information indicating areas to which the service experience analysis information relating to the at least one application is applied. The aforementioned analysis filter information is characterized by including at least one application identification (ID) information, single network slice selection support information (S-NSSAI), or both thereof, as a network entity.

6. The aforementioned at least one processor is If the value of the analysis filter information related to at least one application is different from the value of the analysis filter information related to the network slice, The network entity according to claim 5, characterized in that it is configured to separately receive subscription or request messages from the service consumer entity relating to the service experience analysis information relating to at least one application and subscription or request messages relating to the service experience analysis information relating to the network slice.

7. The aforementioned at least one processor is If it is not possible to distinguish whether the network entity provides service experience analysis information related to at least one application, service experience analysis information related to the network slice, or service experience analysis information related to all of the above, based on the subscription or request message, The network entity according to claim 5, further configured to provide the service experience analysis information relating to at least one of the applications and network slices.

8. The service experience analysis information relating to at least one of the aforementioned applications and the network slice is, First validity period information related to the service experience analysis information related to the network slice, The network entity according to claim 5, comprising: second validity period information relating to the service experience analysis information relating to at least one application.

9. The network entity according to claim 5, characterized in that the network entity is a network data analysis function (NWDAF) entity.

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