# US 11,115,913 B2 · Wireless communication core network and method for analyzing user equipment mobility in the same

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- Number: US 11,115,913 B2
- Document ID: US11115913B2
- Status: Granted
- Kind: B2
- Application number: 16/702,483
- Filed: 2019-12-03
- Published: 2021-05-13
- Granted: 2021-09-07
- Earliest claimed: 2019-11-13
- Assignees: Institute for Information Industry
- Applicants: Institute For Information Industry
- Inventors: Tzu-Ya Wang
- Web page: https://patentgrep.com/patent/US11115913B2

## CPC

- H04W 48/16: Discovering, processing access restriction or access information
- H04W 88/14: Backbone network devices
- H04W 8/08: Mobility data transfer
- H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00)
- H04W 76/11: Allocation or use of connection identifiers
- H04W 92/24: between backbone network devices
- H04W 8/02: Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W 8/186: {Processing of subscriber group data}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

In a wireless communication core network, an Application Function (AF) make an analysis request for a mobility analytics report of a UE, which includes first UE mobility information of the UE. In the wireless communication core network, a Network Data Analysis Function (NWDAF) obtains an identity of an Access and Mobility Management Function (AMF) serving the UE from a Unified Data Management (UDM), on its own or via a Network Exposure Function (NEF), based on the request. Then, the NWDAF obtains second UE mobility information of the UE from the AMF according to the identity of the AMF, and generates and transmits the mobility analytics report to the AF according to the first and second UE mobility information.

## Claims

### Claim 1

A wireless communication core network, comprising:
an access and mobility management function (AMF), being configured to serve at least one user equipment (UE);
a unified data management (UDM), being configured to store an identity of the AMF;
an application Function (AF), being configured to make an analysis request for a mobility analytics report of the at least one UE, wherein the analysis request comprises first UE mobility information of the at least one UE; and
a network data analysis function (NWDAF), being connected to the AMF, the UDM, and the AF, and being configured to:
obtain the identity of the AMF from the UDM on its own or via a network exposure function (NEF) according to the analysis request;
obtain second UE mobility information of the at least one UE from the AMF according to the identity; and
generate and transmit the mobility analytics report to the AF according to the first UE mobility information and the second UE mobility information.

### Claim 2 (depends on 1)

The wireless communication core network of claim 1, wherein when the AF is an untrusted AF, the NWDAF obtains the identity of the AMF from the UDM via the NEF.

### Claim 3 (depends on 1)

The wireless communication core network of claim 1, wherein when the AF is a trusted AF, the NWDAF obtains the identity of the AMF from the UDM on its own.

### Claim 4 (depends on 1)

The wireless communication core network of claim 1, wherein the NWDAF connects to the AMF, the UDM, and the AF through a Hypertext Transfer Protocol Interface.

### Claim 5

A method for analyzing User Equipment (UE) mobility in a wireless communication core network, comprising:
making, by an application Function (AF), an analysis request, wherein the analysis request requires a mobility analytics report of at least one UE, and the analysis request comprises first UE mobility information of the at least one UE;
obtaining, by a network data analysis function (NWDAF), an identity of an access and mobility management function (AMF) from a unified data management (UDM) on its own or via a network exposure function (NEF) according to the analysis request;
obtaining, by the NWDAF, second UE mobility information of the at least one UE from the AMF according to the identity; and
generating, by the NWDAF, the mobility analytics report according to the first UE mobility information and the second UE mobility information, and transmitting the mobility analytics report from the NWDAF to the AF.

### Claim 6 (depends on 5)

The method of claim 5, wherein when the AF is an untrusted AF, the NWDAF obtains the identity of the AMF from the UDM via the NEF.

### Claim 7 (depends on 5)

The method of claim 5, wherein when the AF is a trusted AF, the NWDAF obtains the identity of the AMF from the UDM on its own.

### Claim 8 (depends on 5)

The method of claim 5, wherein the NWDAF connects to the AMF, the UDM, and the AF through a Hypertext Transfer Protocol Interface.