CN113068173B

CN113068173B - Data roaming method and equipment

Info

Publication number: CN113068173B
Application number: CN202010000601.8A
Authority: CN
Inventors: 史嫄嫄
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2023-01-17
Anticipated expiration: 2040-01-02
Also published as: CN113068173A

Abstract

The embodiment of the invention provides a data roaming method and equipment, wherein the method comprises the following steps: receiving a first analysis request associated with a user from a first network element; determining that the user is a roaming user and the home location of the user; sending a second analysis request to the H-NWDAF of the user, and receiving an analysis result of the second analysis request from the H-NWDAF; and sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request. In the embodiment of the invention, the Consumer at the visit place can acquire the user behavior analysis result of the roaming user from the home place, thereby meeting the requirement of the visit place network for service optimization according to the behavior analysis of the user.

Description

Data roaming method and equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for data roaming.

Background

In the technical solution of the fifth generation mobile communication technology (5G), a general architecture of 5G Network automation is defined, a Network Data analysis Function (NWDAF) is introduced into a 5G core Network, and the NWDAF is used as a bearer entity for customized Data collection and intelligent analysis, and not only can collect Data from a Network Function (NF), an Application Function (AF), and an Operation and Maintenance Administration (OAM) of the 5G core Network (5 GC), but also has intelligent analysis capabilities (such as calculation, training, inference, prediction, etc.), and outputs an analysis result to the NF or the AF or the OAM for Data collection, and a main body/Network element (hereinafter referred to as a "subscriber, AF, or OAM") requesting the analysis result to make a decision and apply. Existing solutions allow multiple NWDAF instances to be deployed and present in a Public Land Mobile Network (PLMN), where the multiple NWDAF instances may provide different types of analysis (results), some of which may be specific to certain types of analysis.

The existing scheme only solves the interaction between a single NWDAF in one PLMN and a relevant Consumer thereof, and does not solve the request and acquisition of analysis results related to a roaming user by a visitor Consumer under the condition of roaming of the user. In actual application and deployment, when a user roams, the visited network also has a requirement for Service optimization according to behavior analysis of the user, such as a requirement for power saving according to a communication rule of the user, and a requirement for Quality of Service (QoS) policy management and control according to Quality of Experience (QoE) monitoring of the user. In a roaming place, the stay time of a user is often short, and at this time, if the training data volume is too small, the NWDAF of the visited place cannot meet the requirement of data analysis at all; the user attribution NWDAF has a large amount of user data, the attribution NWDAF has training data for user behavior analysis, and meanwhile, if the attribution has a user behavior analysis result, the application of the user attribution NWDAF can be considered.

Therefore, how to obtain the user behavior analysis result by the visitor concumer is an urgent problem to be solved.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a method and an apparatus for data roaming, so as to solve a problem that a subscriber cannot obtain a user behavior analysis result in a visited place.

In a first aspect, an embodiment of the present invention provides a data roaming method, which is applied to NWDAF, and the method includes:

receiving a first analysis request associated with a user from a first network element;

determining that the user is a roaming user and the home location of the user;

sending a second analysis request to a home network data analysis function H-NWDAF of the user, and receiving an analysis result of the second analysis request from the H-NWDAF;

and sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request.

Optionally, the receiving a first analysis request from a first network element includes:

receiving the first analysis request from the AMF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user, and the attribution information of the roaming user.

receiving a first analysis request from the first network element, the first analysis request including one or more of: the identifier of the first analysis request and the user identifier, wherein the first network element is other than the AMF;

the determining that the user is a roaming user and the home location of the user includes:

determining that the user is a roaming user and a home location of the user according to the first analysis request and registration information of the user received from the AMF, wherein the registration information comprises one or more of the following items: the user identification, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

or,

determining the user to be a roaming user and the home of the user according to the first analysis request and an analysis service provision list in the V-NWDAF;

wherein the analysis service provision list includes: the identification of the request and the locally serviceable access location are analyzed.

Optionally, before sending the second analysis request to the H-NWDAF, the method includes:

judging whether the V-NWDAF meets the first analysis request or not according to the first analysis request and an analysis service provision list in the V-NWDAF;

if the V-NWDAF meets the first analysis request, sending an analysis result of the first analysis request to the first network element;

performing an operation of sending a second analysis request to the H-NWDAF if the V-NWDAF does not satisfy the first analysis request;

wherein the analysis service provision list comprises one or more of: an identification of the analysis request, a locally serviceable access location, a roamable analysis service, and an attribution information of the analysis service.

Optionally, the sending, according to the analysis result of the second analysis request, the analysis result of the first analysis request to the first network element includes:

generating an analysis result of the first analysis request according to an analysis result of the second analysis request;

and sending an analysis result of the first analysis request to the first network element.

Optionally, the method further comprises:

receiving the second analysis request from a visited network data analysis function V-NWDAF;

judging whether an analysis result of the second analysis request is provided or not, and if so, sending the analysis result of the second analysis request to the V-NWDAF; otherwise, rejecting the second analysis request.

Optionally, the determining is performed to determine whether to provide an analysis result of the second analysis request, and if yes, the analysis result of the second analysis request is sent to the V-NWDAF; otherwise, rejecting the second analysis request, comprising:

authenticating according to the second analysis request, and judging whether the V-NWDAF can provide analysis service;

if the authentication is passed and the V-NWDAF can provide analysis services, sending an analysis result of the second analysis request to the V-NWDAF;

rejecting the second analysis request if authentication is not passed or the V-NWDAF is unable to provide analysis services.

In a second aspect, an embodiment of the present invention further provides an NWDAF, including:

a first receiving module, configured to receive a first analysis request related to a user from a first network element;

the determining module is used for determining that the user is a roaming user and the home location of the user;

a first sending module, configured to send a second analysis request to the H-NWDAF of the user;

a second sending module, configured to receive an analysis result of the second analysis request from the H-NWDAF;

a third sending module, configured to send, according to an analysis result of the second analysis request, an analysis result of the first analysis request to the first network element.

In a third aspect, an embodiment of the present invention further provides an NWDAF, including: a transceiver and a processor;

the transceiver is configured to receive a first analysis request associated with a user from a first network element;

the processor is configured to determine that the user is a roaming user and a home location of the user;

the transceiver is further configured to send a second analysis request to the H-NWDAF of the user;

the transceiver further to receive analysis results of the second analysis request from the H-NWDAF;

the transceiver is further configured to send an analysis result of the first analysis request to the first network element according to an analysis result of the second analysis request.

In a fourth aspect, an embodiment of the present invention further provides a communication device, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method comprising data roaming as described in the first aspect.

In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method including data roaming according to the first aspect.

In the embodiment of the invention, the Consumer at the visit place can acquire the user behavior analysis result of the roaming user from the home place, thereby meeting the requirement of the visit place network for service optimization according to the behavior analysis of the user.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a flowchart of a method of data roaming on an NWDAF side according to an embodiment of the present invention;

fig. 2 is a second flowchart of a method for data roaming on the NWDAF side according to an embodiment of the present invention;

fig. 3 is a third flowchart of a method for data roaming on the NWDAF side according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating a method for data roaming on the NWDAF side according to an embodiment of the present invention;

fig. 5 is a flowchart of a method of data roaming on the AMF side according to an embodiment of the present invention;

fig. 6 is a flowchart of a data roaming method of the NF side according to an embodiment of the present invention;

FIG. 7 is a flowchart of a data roaming method according to an embodiment of the present invention;

FIG. 8 is a schematic illustration of an NWDAF embodiment of the present invention;

FIG. 9 is a second exemplary embodiment of an NWDAF device;

fig. 10 is a schematic diagram of a communication device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.

The techniques described herein are not limited to the 5th-generation (5G) and subsequently evolved communication systems, and are not limited to the LTE/LTE evolved (LTE-a) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.

The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA)), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX)), IEEE 802.20, flash-OFDM, and the like. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

The terminal provided by the embodiment of the invention can be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), a vehicle-mounted Device, or the like.

The embodiment of the invention provides a data roaming method, wherein an execution main body of the method can be an NWDAF (network data analysis function) of a visited network, and the NWDAF can be a data analysis function (V-NWDAF) of a home network or a data analysis function (H-NWDAF) of the home network.

Referring to fig. 1, an execution subject of the data roaming method is a V-NWDAF, the method including: step 101, step 102, step 103, and step 104.

Step 101: receiving a first analysis request associated with a user from a first network element;

in this embodiment of the present invention, the first network element may be a visited NF, AF, OAM, or the like (or referred to as a visited concumer), which is not limited to this.

If the first network element is an Access and Mobility management Function (AMF), step 101 is implemented by:

the V-NWDAF receives the first analysis request from the AMF, the first analysis request including one or more of: an identification of the first analysis request (analysis ID _ 1), a user identification (e.g., a user Permanent Identifier (SUPI)), indication of whether the user is a roaming user, home information of the roaming user (e.g., home PLMN or home province).

If the first network element is a network element other than the AMF, such as: SMF, AF, OAM, etc., then step 101 is implemented by:

receiving, by the V-NWDAF from the first network element, a first analysis request comprising one or more of: an identification of the first analysis request and a user identification.

Step 102: determining that the user is a roaming user and the home location of the user;

if the first network element in step 101 is an AMF, the V-NWDAF determines in step 102 that the user is a roaming user and the home of the user through the first analysis request received from the AMF.

If the first network element in step 101 is a network element other than the AMF, for example: SMF, AF, OAM, etc., then step 102 includes: step 1021, step 1022 and step 1023, see fig. 2.

Step 1021: the V-NWDAF determines whether the analysis service provision list is configured locally. If the V-NWDAF local configuration analysis service provision list, perform step 1022;

if the analysis service provision list is not configured locally by the V-NWDAF, then step 1023 is performed;

step 1022: and the V-NWDAF determines that the user is a roaming user and the home of the user according to the analysis service provision list.

Optionally, analyzing the service provision list comprises: the identification of the request and the locally serviceable access location are analyzed.

Table 1: the service offer list is analyzed.

Analytics ID	Locally serviceable access location
		Analytics ID_1	Local PLMN (+ province mark)
Analytics ID_i	Local PLMN (+ province mark)

The NWDAF locally configures an analysis service providing list (table 1), when receiving an analysis service request (carrying analysis IDs and user identifiers) sent by a first network element and related to a roaming user, analyzes the user identifier (usually, the user identifier contains home PLMN information), compares the user identifier with a second column "locally serviceable access location" in the table 1, and can determine whether the roaming is performed, wherein the analyzed PLMN is a home location.

Step 1023: and the V-NWDAF determines that the user is a roaming user and the home of the user according to the registration information of the user received from the AMF.

Optionally, the registration information may include one or more of: the user identifier is indication information indicating whether the user is a roaming user or not and attribution information of the roaming user.

Step 103: sending a second analysis request to an H-NWDAF and receiving an analysis result of the second analysis request from the H-NWDAF;

it is to be understood that the second analysis request may be the same analysis request as the first analysis request, or may be a different analysis request, such as the second analysis request being an analysis request related to the first analysis request, i.e. the second analysis request may be generated based on the first analysis request.

For example, the V-NWDAF may forward the first analysis request to the H-NWDAF or may send a second analysis request related to the first analysis request based on the local analysis capabilities and the analysis capabilities of the H-NWDAF.

Step 104: and sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request.

Optionally, in step 104, generating an analysis result of the first analysis request according to an analysis result of the second analysis request; and sending an analysis result of the first analysis request to the first network element.

In the embodiment of the invention, the Consumer at the visit place can acquire the user behavior analysis result of the roaming user from the home place, thereby meeting the requirement of the visit place network for service optimization according to the behavior analysis of the user and having very practical guiding significance for practical deployment and service development.

Referring to fig. 3, the method is performed by an H-NWDAF, and may include: step 301 and step 302.

Step 301: receiving a second analysis request from the V-NWDAF;

it is to be understood that the second analysis request may be the same analysis request as the first analysis request, or the second analysis request is generated based on the first analysis request, the first analysis request is received from the first network element, and the first network element may be AMF, NF, AF, OAM, and the like, but is not limited thereto.

Step 302: judging whether an analysis result of the second analysis request is provided, if so, executing step 303; otherwise, go to step 304;

step 303: sending an analysis result of the second analysis request to the V-NWDAF;

step 304: rejecting the second analysis request.

For example, a rejection message is sent to the V-NWDAF, which contains a rejection reason, which may optionally be that the authentication is not passed and/or that the H-NWDAF is not capable of providing analysis services.

Further, the H-NWDAF authenticates according to the second analysis request, and judges whether the H-NWDAF can provide analysis service or not; if the H-NWDAF passes the authentication and the H-NWDAF can provide analysis services, the H-NWDAF sends an analysis result of the second analysis request to the V-NWDAF; the H-NWDAF rejects the second analysis request if the H-NWDAF authentication fails or the H-NWDAF cannot provide analysis services.

Referring to fig. 4, the execution subject of the data roaming method is a V-NWDAF, the method including: step 401, step 402, step 403, step 404.

Step 401: receiving a first analysis request associated with a user from a first network element;

step 402: determining that the user is a roaming user and the home location of the user;

it should be noted that the description of step 401 and step 402 can refer to the description of step 101 and step 102 in fig. 1.

Step 403: judging whether the V-NWDAF meets the first analysis request, if so, executing a step 404; otherwise, go to step 405;

for example, determining whether the V-NWDAF satisfies the first analysis request according to the first analysis request and an analysis service provision list;

optionally, analyzing the service provision list comprises: an identification of the analysis request, a locally serviceable access location, a roamable analysis service, and an attribution information of the analysis service.

Table 2: analyzing service provision lists

The V-NWDAF compares the Analytics ID and the subscriber identity in the analysis request sent by the first network element with the first column "Analytics ID" and the second column "locally serviceable access location" in each row in table 2.

If the Analytics ID can be checked and is not roaming, providing a local analysis service;

if the Analytics ID is available and roaming, a further check is made in the third column "whether roaming analysis services are offered for the roaming user".

If yes, it means that the analysis service can be provided for the roaming user, and further look up the fourth column "attribution of analysis service" to determine whether to provide service for the roaming user of the attributive PLMN, if no matched attributive PLMN is found, the service cannot be provided.

If not, the roaming user can not be provided with the analysis service.

Step 404: sending an analysis result of the first analysis request to the first network element;

step 405: sending a second analysis request to the H-NWDAF, receiving an analysis result of the second analysis request from the H-NWDAF, and then performing step 406;

step 406: and sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request.

It should be noted that the description of step 405 and step 406 can refer to the description of step 103 and step 104 in fig. 1.

Referring to fig. 5, an embodiment of the present invention further provides a method for data roaming, where an execution subject of the method is an AMF, and the method includes:

step 501: sending registration information of a user to the V-NWDAF, the registration information including one or more of: user identification, indication information of whether the user is a roaming user, and attribution information of the roaming user.

In some embodiments, the method further comprises: sending a first analysis request to the V-NWDAF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

Referring to fig. 6, an embodiment of the present invention further provides a method for data roaming, where an execution subject of the method is an NF, and the method includes: step 601 and step 602.

Step 601: sending a first analysis request to the V-NWDAF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

step 602: receiving an analysis result of the first analysis request from the V-NWDAF.

In some implementations, the analysis results of the first analysis request are generated by the V-NWDAF from the first analysis request.

In other embodiments, the analysis results of the first analysis request are generated by the V-NWDAF from analysis results of a second analysis request received from an H-NWDAF;

wherein the second analysis request is sent by the V-NWDAF to the H-NWDAF according to the first analysis request.

The data roaming method in the embodiment of the present invention is described below with reference to fig. 7, where H-NWDAF and V-NWDAF perform service registration in H-NRF and V-NRF, respectively, and service discovery across NRFs between V-NWDAF and H-NWDAF, and query through recursion (forwarding) or iteration (redirection).

Step 1: the user roams into the AMF.

Step 2: and the AMF judges to carry out roaming judgment.

In order to satisfy the condition that the Consumer sends an analysis request to the V-NWDAF, the V-NWDAF determines whether a user related to the analysis result of the request belongs to a roaming user and the attribution of the roaming user, and the determination can be realized by the following two ways:

implementation mode 1: when the provider is only the AMF, the AMF may carry the roaming information of the user to the V-NWDAF in an analysis request, and since the AMF is an executable of roaming determination, the AMF sends the analysis request to the V-NWDAF, including at least one of: an analysis ID (e.g., analysis ID = Communication Pattern) (for convenience of description below, the label is here analysis ID _ 1), an identification of the user (e.g., SUPI), whether it is a roaming user, home information of the roaming user (e.g., home PLMN or home province), and so on. In this case, the following step 3 is not required.

Implementation mode 2: when the Consumer is not the AMF (such as SMF), since the non-AMF may not directly determine the user roaming information, there are two ways to achieve the roaming determination of the V-NWDAF on the relevant user:

the implementation mode I: the AMF registers the roaming user with the NWDAF (step 3), including at least one of a subscriber identity (e.g., SUPI), whether the roaming user is present, home information (e.g., home PLMN or home province), and the like.

It can be understood that, in the roaming user registration manner, by registering in advance, the V-NWDAF can perform roaming determination on the user information in the subsequent Consumer analysis request, and whether the analysis service can be provided locally or not can be determined locally.

Implementation mode II: the service provision list is analyzed by the V-NWDAF configuration access location (e.g., PLMN or province information).

And a local configuration comparison mode, wherein the V-NWDAF can provide analysis service locally or not through local configuration comparison.

For the analysis service provision list, see table 2 above.

The Consumer sends an analysis request to the V-NWDAF:

if corresponding to the implementation manner I, the analysis request in step 4 at least includes: analysis ID (e.g., analysis ID = Communication Pattern), user identification.

If the analysis request in step 4 corresponds to the implementation II, the analysis request at least includes an Analytics ID (e.g., analytics ID = Communication Pattern), a user identifier, and user attribution information.

And 5: the V-NWDAF judges the analysis ID _1 locally according to the home location information and the analysis ID of the roaming user, and judges whether the result requirement of the analysis ID _1 can be met or not;

if the result requirement of the Analytics ID _1 is locally met, initiating 6a;

and if the local does not meet the result requirement of the analysis ID _1, initiating 6b according to the request content (forwarding the analysis ID _1 or requesting other analysis ID _2 related to the analysis ID _ 1) initiated by the local analysis capability and the analysis capability of the H-NWDAF to the H-NWDAF.

Illustratively, if the V-NWDAF does not have the analysis result of the analysis ID 1 applied by the user (such as a training model: a user communication behavior model), but can be inquired by the H-NWDAF, the analysis result of the analysis ID _1 is forwarded;

if the V-NWDAF does not have the analysis result of the Analytics ID 1 applied by the user (if the direct reasoning result is that the user communication behavior is abnormal, no), but has the analysis result related to the Analytics ID 1 (if the user communication behavior model is abnormal), the V-NWDAF converts the Analytics ID 1 into the Analytics ID 2 and sends the Analytics ID 2 to the H-NWDAF.

Step 6a: and the V-NWDAF responds to the analysis result of the Analytics ID _1 to the Consumer, and the process is ended.

Step 6b: the V-NWDAF initiates an analysis request to the H-NWDAF, wherein the analysis request comprises analysis ID _2 (or analysis ID _ 1), user identification, identification of the V-NWDAF and authentication information.

And 7: the H-NWDAF authenticates and locally determines whether services for Analytics ID _2 can be provided.

Step 8a: if the authentication is not passed or the analysis result of the Analytics ID _2 cannot be provided locally, rejecting the analysis result, wherein the rejection reason is contained;

and step 8b: if the authentication is passed and available, the analysis result of the analysis ID _2 is responded.

And step 9: storing the analysis result of the response Analytics ID _2, and further analyzing according to the requirement to generate the analysis result of the Analytics ID _1;

step 10: the results of the analysis of Analytics ID _1 are responded to the Consumer.

Referring to fig. 8, an embodiment of the present invention further provides an NWDAF800, where the NWDAF includes:

a first receiving module 801, configured to receive a first analysis request related to a user from a first network element;

a determining module 802, configured to determine that the user is a roaming user and a home location of the user;

a first sending module 803, configured to send a second analysis request to the H-NWDAF of the user;

a second sending module 804, configured to receive an analysis result of the second analysis request from the H-NWDAF;

a third sending module 805, configured to send, according to an analysis result of the second analysis request, an analysis result of the first analysis request to the first network element.

In some embodiment modes, the first receiving module 801 is further configured to: receiving the first analysis request from the AMF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user, and the attribution information of the roaming user.

In some embodiment modes, the first receiving module 801 is further configured to: receiving a first analysis request from the first network element, the first analysis request including one or more of: the identifier of the first analysis request and the user identifier, wherein the first network element is other than the AMF;

accordingly, the determining module 802 is further configured to: determining that the user is a roaming user and a home location of the user according to the first analysis request and registration information of the user received from the AMF, wherein the registration information comprises one or more of the following items: the user identification, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

or,

determining that the user is a roaming user and the home of the user according to the first analysis request and an analysis service provision list in the V-NWDAF;

In some embodiment implementations, the NWDAF800 further includes: a first determining module, configured to determine whether the V-NWDAF satisfies the first analysis request according to the first analysis request and an analysis service provision list; if the V-NWDAF meets the first analysis request, sending an analysis result of the first analysis request to the first network element; if the V-NWDAF does not satisfy the first analysis request, triggering a second sending module 804 to perform an operation of sending a second analysis request to the H-NWDAF;

In some embodiment modes, the third sending module 805 is further configured to: generating an analysis result of the first analysis request according to an analysis result of the second analysis request; and sending an analysis result of the first analysis request to the first network element.

In some embodiment implementations, the NWDAF800 further includes:

a second receiving module to receive the second analysis request from the V-NWDAF;

a second determining module, configured to determine whether to provide an analysis result of the second analysis request, and if so, send the analysis result of the second analysis request to the V-NWDAF; otherwise, rejecting the second analysis request.

In some embodiment modes, the second determining module is further configured to: authenticating according to the second analysis request, and judging whether the V-NWDAF can provide analysis service; if the authentication is passed and the V-NWDAF can provide analysis services, sending an analysis result of the second analysis request to the V-NWDAF; rejecting the second analysis request if authentication is not passed or the V-NWDAF is unable to provide analysis services.

The NWDAF provided in the embodiment of the present invention may implement the method embodiments shown in fig. 1, fig. 2, fig. 3, or fig. 4, which have similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 9, an embodiment of the present invention further provides an NWDAF900, where the NWDAF includes: a transceiver 901 and a processor 902;

a transceiver 901 for receiving a first analysis request related to a user from a first network element;

a processor 902 configured to determine that the user is a roaming user and a home location of the user;

a transceiver 901, further configured to send a second analysis request to the H-NWDAF of the user;

a transceiver 901 further configured to receive an analysis result of the second analysis request from the H-NWDAF;

the transceiver 901 is further configured to send an analysis result of the first analysis request to the first network element according to an analysis result of the second analysis request.

In some embodiments, the transceiver 901 is further configured to: receiving the first analysis request from the AMF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user, and the attribution information of the roaming user.

In some embodiments, the transceiver 901 is further configured to: receiving a first analysis request from the first network element, the first analysis request including one or more of: the identifier of the first analysis request and the user identifier, wherein the first network element is other than the AMF;

accordingly, the processor 902 is further configured to: determining that the user is a roaming user and a home location of the user according to the first analysis request and registration information of the user received from the AMF, wherein the registration information comprises one or more of the following items: the user identification, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

or,

determining that the user is a roaming user and the home of the user according to the first analysis request and an analysis service provision list in the V-NWDAF; wherein the analysis service provision list includes: the identification of the request and the locally serviceable access location are analyzed.

In some embodiment, the processor 902 is further configured to determine whether the V-NWDAF satisfies the first analysis request according to the first analysis request and an analysis service provision list; if the V-NWDAF meets the first analysis request, sending an analysis result of the first analysis request to the first network element; if the V-NWDAF does not satisfy the first analysis request, trigger the transceiver 901 to perform an operation of sending a second analysis request to the H-NWDAF;

wherein the analytics service provisioning list includes one or more of: an identification of the analysis request, a locally serviceable access location, a roamable analysis service, and an attribution information of the analysis service.

In some embodiment modes, the transceiver 901 is further configured to: generating an analysis result of the first analysis request according to an analysis result of the second analysis request; and sending an analysis result of the first analysis request to the first network element.

In some embodiments, the transceiver 901 is further configured to receive the second analysis request from the V-NWDAF;

the processor 902 is further configured to determine whether to provide an analysis result of the second analysis request, and if so, send the analysis result of the second analysis request to the V-NWDAF; otherwise, rejecting the second analysis request.

In some embodiments, the processor 902 is further configured to: authenticating according to the second analysis request, and judging whether the V-NWDAF can provide analysis service; if the authentication is passed and the V-NWDAF can provide analysis services, sending an analysis result of the second analysis request to the V-NWDAF; rejecting the second analysis request if authentication is not passed or the V-NWDAF is unable to provide analysis services.

The NWDAF provided by the embodiment of the present invention may implement the method embodiments shown in fig. 1, fig. 2, fig. 3, or fig. 4, which have similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 10, fig. 10 is a structural diagram of a communication device applied in the embodiment of the present invention, as shown in fig. 10, the communication device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:

in one embodiment of the present invention, the communication device 1000 further comprises: a computer program stored on the memory 1003 and executable on the processor 1001, the computer program, when executed by the processor 1001, implementing the steps in the embodiments shown in fig. 1, 2, 3 or 4.

In FIG. 10, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, in particular, one or more processors, represented by processor 1001, and memory, represented by memory 1003. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1001 in performing operations.

The communication device provided in the embodiment of the present invention may execute the method embodiments shown in fig. 1, fig. 2, fig. 3, or fig. 4, which have similar implementation principles and technical effects, and this embodiment is not described herein again.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that the functionality described in this disclosure may be implemented in hardware, software, firmware, or any combination thereof, in one or more of the examples described above. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass these modifications and variations.

Claims

1. A data roaming method applied to a network data analysis function (NWDAF), the method comprising:

determining that the user is a roaming user and the home location of the user;

sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request;

before the sending of the second analysis request to the user's H-NWDAF, the method comprises:

performing an operation of transmitting a second analysis request to the user's H-NWDAF if the V-NWDAF does not satisfy the first analysis request;

2. The method of claim 1, wherein receiving the first analysis request from the first network element comprises:

receiving the first analysis request from an access and mobility management function, AMF, the first analysis request including one or more of: the identifier of the first analysis request, the user identifier, the indication information of whether the user is a roaming user, and the attribution information of the roaming user.

3. The method of claim 1, wherein receiving the first analysis request from the first network element comprises:

determining that the user is a roaming user and the home location of the user according to the first analysis request and the registration information of the user received from the AMF;

wherein the registration information comprises one or more of: the user identification, the indication information of whether the user is a roaming user or not and the attribution information of the roaming user;

or,

determining the user as a roaming user and the home location of the user according to the first analysis request and an analysis service provision list in a visited network data analysis function V-NWDAF;

4. The method of claim 1, wherein the sending the analysis result of the first analysis request to the first network element according to the analysis result of the second analysis request comprises:

5. The method of claim 1, further comprising:

receiving the second analysis request from the V-NWDAF;

6. The method of claim 5, wherein the determining is performed to determine whether to provide analysis results of the second analysis request, and if so, sending the analysis results of the second analysis request to the V-NWDAF; otherwise, rejecting the second analysis request, comprising:

7. An NWDAF, comprising:

a third sending module, configured to send an analysis result of the first analysis request to the first network element according to an analysis result of the second analysis request;

the NWDAF further comprises: a first determining module, configured to determine whether the V-NWDAF satisfies the first analysis request according to the first analysis request and an analysis service provision list in the V-NWDAF; if the V-NWDAF meets the first analysis request, sending an analysis result of the first analysis request to the first network element; if the V-NWDAF does not satisfy the first analysis request, triggering a second sending module to execute an operation of sending a second analysis request to the H-NWDAF;

wherein the analysis service provision list comprises one or more of: the identification of the analysis request, the locally serviceable access location, the roamable analysis service and the attribution information of the analysis service.

8. An NWDAF, comprising: a transceiver and a processor;

the processor is used for determining that the user is a roaming user and the home location of the user;

the transceiver further to receive an analysis result of the second analysis request from the H-NWDAF;

the transceiver is further configured to send an analysis result of the first analysis request to the first network element according to an analysis result of the second analysis request;

the processor is further configured to determine whether the V-NWDAF satisfies the first analysis request according to the first analysis request and an analysis service provision list in the V-NWDAF; if the V-NWDAF meets the first analysis request, sending an analysis result of the first analysis request to the first network element; triggering the transceiver to perform an operation of sending a second analysis request to the H-NWDAF if the V-NWDAF does not satisfy the first analysis request;

9. A communication device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of a method comprising data roaming according to any one of claims 1 to 6.

10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out steps of a method comprising data roaming according to any one of claims 1 to 6.