FORM 2
THE PATENTS ACT, 1970 (39 OF 1970) & THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
“METHOD AND SYSTEM FOR PROVIDING A SUBSCRIPTION NOTIFICATION IN A COMMUNICATION NETWORK”
We, Jio Platforms Limited, an Indian National, of Office - 101, Saffron, Nr. Centre Point, Panchwati 5 Rasta, Ambawadi, Ahmedabad - 380006, Gujarat, India.
The following specification particularly describes the invention and the manner in which it is to be performed.

METHOD AND SYSTEM FOR PROVIDING A SUBSCRIPTION NOTIFICATION IN A COMMUNICATION NETWORK
FIELD OF THE DISCLOSURE
5
[0001] The present disclosure relates generally to the field of wireless
communication system. More particularly, the present disclosure relates to method and system for Network Data Analytics Function (NWDAF) subscription data analytics in 5th Generation (5G) communication system. 10
BACKGROUND
[0002] The following description of related art is intended to provide
background information pertaining to the field of the disclosure. This section may
15 include certain aspects of the art that may be related to various features of the
present disclosure. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of prior art.
20 [0003] Wireless communication technology has rapidly evolved over the past
few decades, with each generation bringing significant improvements and advancements. The first generation of wireless communication technology was based on analog technology and offered only voice services. However, with the advent of the second-generation (2G) technology, digital communication and data
25 services became possible, and text messaging was introduced. 3G technology
marked the introduction of high-speed internet access, mobile video calling, and location-based services. The fourth-generation (4G) technology revolutionized wireless communication with faster data speeds, better network coverage, and improved security. Currently, the fifth-generation (5G) technology is being
30 deployed, promising even faster data speeds, low latency, and the ability to connect
2

multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users.
5 [0004] In the 5G communication system, there is provided a plurality of
network functions (NFs), for example an Access and Mobility Management Function (AMF), session management function (SMF), Authentication Server function (AUSF), a Network Slice Selection Function (NSSF), Policy control function (PCF), a Network Repository Function (NRF), Network Data Analytics
10 Function (NWDAF) and the like. One or more of the aforementioned NFs
communicates with each other, to implement multiple activities on the 5G communication system. For example, for data transfer, the AMF communicates with SMF, to initiate the communication. Accordingly, one or more connections are established between two peer NFs, to allow communication therebetween, and
15 thus enable such activities there between. Similarly, NWDAF communicates with
AMF and SMF for performing subscription data analytics. NWDAF addresses some processes such as, data collection interface from network nodes, predefined analytics insights and data exposure interface for consumers.
20 [0005] As is conventionally known, the AMF is in communication with the
SMF for establishing UE data session. AMF and SMF offers Event Exposure Service as a service producer to enable an NF to subscribe and get notified about an event. If NWDAF node or in a matter of fact, any 5G node wants to subscribe, through event exposure service, for number of PDU sessions established in a given
25 time period and wants to get notified after a periodic interval, then no such event
exists on AMF node and SMF nodes in conventional standards. There exists one event at SMF node, which will notify to NWDAF for every Protocol Data Unit (PDU) session established, which means NWDAF has to count all the notifications for deducing the requirement. Further, there is no option for subscription over Event
3

Exposure Service in AMF node, for an area such as Public Land Mobile Network (PLMN).
[0006] Thus, there exists an imperative need in the art to provide an efficient
5 system and method for optimizing the communication in network by providing a
mechanism to share the number of PDU sessions in the network without increasing the number of transactions in the network, which the present disclosure aims to address.
10 OBJECTS OF THE INVENTION
[0007] Some of the objects of the present disclosure, which at least one
implementation disclosed herein satisfies are listed herein below.
15 [0008] It is an object of the present disclosure to provide a system and a method
for optimizing the communication in network by reducing the number of transactions in network by clubbing two events, number of registered users and number of Protocol Data Unit (PDU) sessions per slice and per Public Land Mobile Network (PLMN) in single notification.
20
[0009] It is another object of the present disclosure to provide a system and a
method for optimizing the communication in network by reducing the number of transactions process for NWDAF node for subscription data analysis.
25 [00010] It is yet another object of the present disclosure to provide a system and
a method for optimizing the communication in network by reducing the number of transactions by providing an event, which gives number of PDU sessions and number of registered users after a periodic interval at AMF node and removing the requirement of process of SMF node. Therefore, notify for both the events can be
4

clubbed together and sent to NWDAF node by AMF node, which saves network resources.
[00011] It is yet another object of the present disclosure to provide a system and
5 a method for optimizing the communication in network by providing a custom
Information element (IE), which can provide PLMN list in subscription request which is not provided by the existing solutions.
10 SUMMARY OF THE DISCLOSURE
[00012] This section is provided to introduce certain aspects of the present
disclosure in a simplified form that are further described below in the detailed
description. This summary is not intended to identify the key features or the scope
15 of the claimed subject matter.
[00013] According to an aspect of the present disclosure, a method for providing
a subscription notification in a communication network is disclosed. The method includes dynamically receiving, by a transceiver unit at an access and mobility
20 management function (AMF) unit, a subscription request from a network data
analytics function (NWDAF) unit, wherein the subscription request is received to obtain a data associated with a first event and a data associated with a custom event. Next, the method includes storing, by a storage unit at the access and mobility management function (AMF) unit, the data associated with the first event and the
25 data associated with the custom event in an AMF database. Next, the method
includes dynamically receiving, by the transceiver unit at the access and mobility management function (AMF) unit, a protocol data unit (PDU) session request from one or more user equipment(s) (UEs). Next, the method includes verifying, by a verification unit at the access and mobility management function (AMF) unit, a
30 number of PDU session request based on the first event and the custom event.
5

Thereafter, the method includes transmitting, by the transceiver unit at the access and mobility management function (AMF) unit, a subscription notification to the network data analytics function (NWDAF) unit.
5 [00014] In an exemplary aspect of the present disclosure, the subscription
notification comprises a data associated with a number of registered UEs and a number of established PDU session (s) in a pre-defined time interval.
[00015] In an exemplary aspect of the present disclosure, the access and
10 mobility management function (AMF) unit transmits the subscription notification
to the network data analytics function (NWDAF) unit over the pre-defined time interval.
[00016] In an exemplary aspect of the present disclosure, the first event is an
15 UES_IN_AREA_REPORT event and the data associated with the first event
corresponds to a number of registered users in a specified area.
[00017] In an exemplary aspect of the present disclosure, the subscription
notification is sent periodically after a pre-defined time-period.
20
[00018] In an exemplary aspect of the present disclosure, the custom event is a
NUM_OF_ESTD_PDU_SESSIONS_REPORT event and the data associated with the custom event corresponds to a number of established PDU sessions for a given slice and a given Public Land Mobile Network (PLMN).
25
[00019] In an exemplary aspect of the present disclosure, the subscription
notification is based at least on one of the first event and the custom event.
[00020] In an exemplary aspect of the present disclosure, the subscription
30 request comprises at least one of a single-network slice selection assistance
6

information (S-NSSAI) and a custom Information Element (IE) comprising a PLMN identifier (ID).
[00021] According to another aspect of the present disclosure, a system for
5 providing a subscription notification in a communication network is disclosed. The
system comprising an access and mobility management function (AMF) unit comprising a transceiver unit, a storage unit, and a verification unit. The transceiver unit is configured to receive a subscription request from a network data analytics function (NWDAF) unit, wherein the subscription request is received to obtain a
10 data associated with a first event and a custom event. the storage unit is configured
to store the first event and the custom event in an AMF database. The transceiver unit is further configured to receive a protocol data unit (PDU) session request from one or more user equipment(s) (UEs). The verification unit is configured to verify a number of PDU session request based on the first event and the custom event. The
15 transceiver unit is further configured to transmit the subscription notification to the
network data analytics function (NWDAF) unit.
[00022] According to another aspect of the present disclosure, a User Equipment
(UE) connected to a communication network is provided. The UE comprises a
20 memory and a processor coupled to the memory. The processor is configured to
transmit a protocol data unit (PDU) session request to an access and mobility management function (AMF) unit. The PDU session request, when received by the AMF unit, is used for transmission of a subscription notification to a network data analytics function (NWDAF) unit in the communication network. The AMF unit is
25 configured to transmit the subscription notification to the NWDAF unit based on:
dynamically receiving a subscription request from a network data analytics function (NWDAF) unit, wherein the subscription request is received to obtain a data associated with a first event and a data associated with a custom event; storing the data associated with the first event and the data associated with the custom event in
30 an AMF database; on dynamically receiving a protocol data unit (PDU) session
7

request from the UE; verifying a number of PDU session request based on the first event and the custom event; and transmitting the subscription notification to the network data analytics function (NWDAF) unit.
5 [00023] According to yet another aspect of the present disclosure, a non-
transitory computer readable storage medium storing one or more instructions for providing a subscription notification in a communication network are provided. The one or more instructions include executable code which, when executed by one or more units of a system, causes: a transceiver unit of the system to dynamically
10 receive a subscription request from an NWDAF unit, wherein the subscription
request is received to obtain a data associated with a first event and a custom event; a storage unit of the system at the AMF unit, the data associated with the first event and the data associated with the custom event an AMF database; the transceiver unit of the system to dynamically receive a protocol data unit (PDU) session request
15 from one or more user equipment(s) (UEs); a verification unit at the AMF unit to
verify a number of PDU session request based on the first event and the custom event; and the transceiver unit at the AMF unit of the system to transmit the subscription notification to the network data analytics function (NWDAF) unit.
20 BRIEF DESCRIPTION OF DRAWINGS
[00024] The accompanying drawings, which are incorporated herein, and
constitute a part of this disclosure, illustrate exemplary implementations of the
disclosed methods and systems in which like reference numerals refer to the same
25 parts throughout the different drawings. Components in the drawings are not
necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such
8

drawings includes disclosure of electrical components, electronic components or circuitry commonly used to implement such components.
[00025] FIG. 1 illustrates an exemplary block diagram representation of 5th
5 generation core (5GC) network architecture.
[00026] FIG.2 illustrates an exemplary block diagram of an AMF
implementation in the 5G communication network, in accordance with exemplary implementations of the present disclosure. 10
[00027] FIG.3 illustrates an exemplary block diagram of an AMF, in accordance
with exemplary implementations of the present disclosure.
[00028] FIG. 4 illustrates an exemplary method flow diagram indicating the
15 process for optimizing communication in network by reducing the number of
transactions between AMF and NWDAF, in accordance with exemplary implementations of the present disclosure.
[00029] FIG. 5 illustrates an exemplary call flow diagram indicating the process
20 for optimizing communication in network by reducing the number of transactions
between AMF and NWDAF, in accordance with exemplary implementations of the present disclosure.
[00030] FIG.6 illustrates an exemplary block diagram of a computing device
25 upon which the features of the present disclosure may be implemented in
accordance with exemplary implementation of the present disclosure.
[00031] The foregoing shall be more apparent from the following more detailed
description of the disclosure. 30
9

DETAILED DESCRIPTION
[00032] In the following description, for the purposes of explanation, various
specific details are set forth in order to provide a thorough understanding of
5 implementations of the present disclosure. It will be apparent, however, that
implementations of the present disclosure may be practiced without these specific
details. Several features described hereafter may each be used independently of one
another or with any combination of other features. An individual feature may not
address any of the problems discussed above or might address only some of the
10 problems discussed above.
[00033] The ensuing description provides exemplary implementations only, and
is not intended to limit the scope, applicability, or configuration of the disclosure.
Rather, the ensuing description of the exemplary implementations will provide
15 those skilled in the art with an enabling description for implementing an exemplary
implementation. It should be understood that various changes may be made in the function and arrangement of elements without departing from the spirit and scope of the disclosure as set forth.
20 [00034] Specific details are given in the following description to provide a
thorough understanding of the implementations. However, it will be understood by one of ordinary skill in the art that the implementations may be practiced without these specific details. For example, circuits, systems, processes, and other components may be shown as components in block diagram form in order not to
25 obscure the implementations in unnecessary detail.
[00035] Also, it is noted that individual implementations may be described as a
process which is depicted as a flowchart, a flow diagram, a data flow diagram, a
structure diagram, or a block diagram. Although a flowchart may describe the
30 operations as a sequential process, many of the operations may be performed in
10

parallel or concurrently. In addition, the order of the operations may be re-arranged. A process is terminated when its operations are completed but could have additional steps not included in a figure.
5 [00036] The word “exemplary” and/or “demonstrative” is used herein to mean
serving as an example, instance, or illustration. For the avoidance of doubt, the subject matter disclosed herein is not limited by such examples. In addition, any aspect or design described herein as “exemplary” and/or “demonstrative” is not necessarily to be construed as preferred or advantageous over other aspects or
10 designs, nor is it meant to preclude equivalent exemplary structures and techniques
known to those of ordinary skill in the art. Furthermore, to the extent that the terms “includes,” “has,” “contains,” and other similar words are used in either the detailed description or the claims, such terms are intended to be inclusive—in a manner similar to the term “comprising” as an open transition word—without precluding
15 any additional or other elements.
[00037] As used herein, a “processing unit” or “processor” or “operating
processor” includes one or more processors, wherein processor refers to any logic circuitry for processing instructions. A processor may be a general-purpose processor, a special purpose processor, a conventional processor, a digital signal
20 processor, a plurality of microprocessors, one or more microprocessors in
association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits, Field Programmable Gate Array circuits, any other type of integrated circuits, etc. The processor may perform signal coding data processing, input/output processing, and/or any other functionality that enables the working of
25 the system according to the present disclosure. More specifically, the processor or
processing unit is a hardware processor.
[00038] As used herein, “a user equipment”, “a user device”, “a smart-user-
device”, “a smart-device”, “an electronic device”, “a mobile device”, “a handheld
30 device”, “a wireless communication device”, “a mobile communication device”, “a
11

communication device” may be any electrical, electronic and/or computing device
or equipment, capable of implementing the features of the present disclosure. The
user equipment/device may include, but is not limited to, a mobile phone, smart
phone, laptop, a general-purpose computer, desktop, personal digital assistant,
5 tablet computer, wearable device or any other computing device which is capable
of implementing the features of the present disclosure. Also, the user device may contain at least one input means configured to receive an input from at least one of a transceiver unit, a processing unit, a storage unit, a detection unit and any other such unit(s) which are required to implement the features of the present disclosure.
10
[00039] As used herein, “storage unit” or “memory unit” refers to a machine or
computer-readable medium including any mechanism for storing information in a form readable by a computer or similar machine. For example, a computer-readable medium includes read-only memory (“ROM”), random access memory (“RAM”),
15 magnetic disk storage media, optical storage media, flash memory devices or other
types of machine-accessible storage media. The storage unit stores at least the data that may be required by one or more units of the system to perform their respective functions.
20 [00040] As portable electronic devices and wireless technologies continue to
improve and grow in popularity, the advancing wireless technologies for data transfer are also expected to evolve and replace the older generations of technologies. In the field of wireless data communications, the dynamic advancement of various generations of cellular technology are also seen. The
25 development, in this respect, has been incremental in the order of second generation
(2G), third generation (3G), fourth generation (4G), and now fifth generation (5G), and more such generations are expected to continue in the forthcoming time.
[00041] Radio Access Technology (RAT) refers to the technology used by
30 mobile devices/user equipment (UE) to connect to a cellular network. It refers to
12

the specific protocol and standards that govern the way devices communicate with
base stations, which are responsible for providing the wireless connection. Further,
each RAT has its own set of protocols and standards for communication, which
define the frequency bands, modulation techniques, and other parameters used for
5 transmitting and receiving data. Examples of RATs include GSM (Global System
for Mobile Communications), CDMA (Code Division Multiple Access), UMTS
(Universal Mobile Telecommunications System), LTE (Long-Term Evolution),
and 5G. The choice of RAT depends on a variety of factors, including the network
infrastructure, the available spectrum, and the mobile device's/device's capabilities.
10 Mobile devices often support multiple RATs, allowing them to connect to different
types of networks and provide optimal performance based on the available network resources. The disclosure herein relates to the situations when the user equipment (UE) operates in the fifth generation (5G) communication system.
15 [00042] As disclosed in the background section, there is no event in Access and
Mobility Management Function (AMF ) or Sessions Management Function (SMF) which can tell directly the total number of PDU sessions established (per slice and per Public Land Mobile Network PLMN) in a given periodic interval. As per 3GPP standard, SMF provides one option in which Network Data Analytics Function
20 (NWDAF) can subscribe to SMF for every Protocol Data Unit (PDU)
establishment, which means that whenever any PDU is established then SMF will send one notification to NWDAF. In this case, if NWDAF wants to calculate the total number of PDU sessions established in last 15 minutes, then NWDAF has to count it by itself.
25
[00043] This option at SMF is not optimal as SMF and NWDAF needs to
exchange messages with each other on every PDU session establishment and this leads to increased network traffic.
13

[00044] The present disclosure proposes that the NWDAF requirement is
fulfilled by implementing a customised event at AMF (instead of SMF), which can directly provide the number of PDU sessions in every given periodic interval (e.g. last 15 minutes). 5
[00045] NWDAF can subscribe to AMF/SMF for two events. 1. Number of
registered Users in a given periodic interval (e.g. last 15 minutes) and 2. Number of PDU sessions established in same periodic interval (e.g. 15 minutes). So if number of PDU sessions established event at AMF are implemented, then these two
10 events can be clubbed together and the AMF can send the notify together in single
message towards NWDAF. If number of PDU sessions was implemented at SMF, then NWDAF would be required to maintain two subscriptions for these two events, i.e., one at AMF and second at SMF. Thus, implementing the present solution at the AMF also reduces the network traffic by significant amount as now instead of
15 exchanging the PDU Session Establishment event information (using Notification
message) at every PDU Session Establishment procedure at SMF, AMF now sends the required information using single notification message at periodic intervals. A second level of optimisation is that AMF piggybacks this customised event information with the notification message which it is supposed to send for reporting
20 standardised event type information related to number of registered subscribers in
a slice/PLMN.
[00046] Hereinafter, exemplary implementations of the present disclosure will
be described with reference to the accompanying drawings.
25
[00047] The 5G communication system includes a plurality of network
functions (NFs), for example an Access and Mobility Management Function (AMF), a session management function (SMF), an Authentication Server function (AUSF), a Network Slice Selection Function (NSSF), a Policy Control Function
30 (PCF), a Network Repository Function (NRF), a Network Data Analytics Function
14

(NWDAF), and the like, for enabling one or more functionalities of the 5G
communication system. Notably, the UE is in communication with the AMF via the
gNB, while the AMF is further in communication with the other NFs. The
communication between the gNB and the AMF is generally through next generation
5 application protocol (NGAP). While the communication between the AMF and
other NFs is through a language commonly known as Hypertext Transfer Protocol 2 (HTTP2), it may also use other kinds of languages and is not limited thereto.
[00048] Furthermore, one or more of the aforementioned NFs communicates
10 with each other, to implement multiple functionalities on the 5G communication
system. One such exemplary functionality may be initiation of communication
between the at least one user equipment and other user equipment. For such
functionality, it is required that the AMF communicates with SMF. Accordingly, it
is imperative to provide or establish communication between various peer NFs. For
15 ease in reference and understanding, the concepts of the present disclosure will be
explained as applied to communication between the AMF and the NWDAF.
[00049] FIG. 1 illustrates an exemplary block diagram representation of 5th
generation core (5GC) network architecture, in accordance with exemplary
20 implementation of the present disclosure. As shown in FIG. 1, the 5GC network
architecture [100] includes a user equipment (UE) [102], a radio access network (RAN) [104], an access and mobility management function (AMF) [106], a Session Management Function (SMF) [108], a Service Communication Proxy (SCP) [110], an Authentication Server Function (AUSF) [112], a Network Slice Specific
25 Authentication and Authorization Function (NSSAAF) [114], a Network Slice
Selection Function (NSSF) [116], a Network Exposure Function (NEF) [118], a Network Repository Function (NRF) [120], a Policy Control Function (PCF) [122], a Unified Data Management (UDM) [124], an application function (AF) [126], a User Plane Function (UPF) [128], a data network (DN) [130], wherein all the
15

components are assumed to be connected to each other in a manner as obvious to the person skilled in the art for implementing features of the present disclosure.
[00050] The User Equipment (UE) [102] interfaces with the network via the
5 Radio Access Network (RAN) [104]; the Access and Mobility Management
Function (AMF) [106] manages connectivity and mobility, while the Session Management Function (SMF) [108] administers session control; the service communication proxy (SCP) [110] routes and manages communication between network services, enhancing efficiency and security, and the Authentication Server
10 Function (AUSF) [112] handles user authentication; the Non-Standalone Access
Architecture Function (NSSAAF) [114] for integrating the 5G core network with existing 4G LTE networks i.e., to enable Non-Standalone (NSA) 5G deployments, the Network Slice Selection Function (NSSF) [116], Network Exposure Function (NEF) [118], and Network Repository Function (NRF) [120] enable network
15 customization, secure interfacing with external applications, and maintain network
function registries respectively; the Policy Control Function (PCF) [122] develops operational policies, and the Unified Data Management (UDM) [124] manages subscriber data; the Application Function (AF) [126] enables application interaction, the User Plane Function (UPF) [128] processes and forwards user data,
20 and the Data Network (DN) [130] connects to external internet resources;
collectively, these components are designed to enhance mobile broadband, ensure low-latency communication, and support massive machine-type communication, solidifying the 5GC as the infrastructure for next-generation mobile networks.
25 [00051] Radio Access Network (RAN) [104] is the part of a mobile
telecommunications system that connects user equipment (UE) [102] to the core network (CN) and provides access to different types of networks (e.g., 5G network). It consists of radio base stations and the radio access technologies that enable wireless communication.
30
16

[00052] Access and Mobility Management Function (AMF) [106] is a 5G core
network function responsible for managing access and mobility aspects, such as UE registration, connection, and reachability. It also handles mobility management procedures like handovers and paging. 5
[00053] Session Management Function (SMF) [108] is a 5G core network
function responsible for managing session-related aspects, such as establishing, modifying, and releasing sessions. It coordinates with the User Plane Function (UPF) for data forwarding and handles IP address allocation and QoS enforcement.
10
[00054] Service Communication Proxy (SCP) [110] is a network function in the
5G core network that facilitates communication between other network functions by providing a secure and efficient messaging service. It acts as a mediator for service-based interfaces.
15 [00055] Authentication Server Function (AUSF) [112] is a network function in
the 5G core responsible for authenticating UEs during registration and providing security services. It generates and verifies authentication vectors and tokens.
[00056] Network Slice Specific Authentication and Authorization Function
20 (NSSAAF) [114] is a network function that provides authentication and
authorization services specific to network slices. It ensures that UEs can access only the slices for which they are authorized.
[00057] Network Slice Selection Function (NSSF) [116] is a network function
25 responsible for selecting the appropriate network slice for a UE based on factors
such as subscription, requested services, and network policies.
[00058] Network Exposure Function (NEF) [118] is a network function that
exposes capabilities and services of the 5G network to external applications,
30 enabling integration with third-party services and applications.
17

[00059] Network Repository Function (NRF) [120] is a network function that
acts as a central repository for information about available network functions and services. It facilitates the discovery and dynamic registration of network functions. 5
[00060] Policy Control Function (PCF) [122] is a network function responsible
for policy control decisions, such as QoS, charging, and access control, based on subscriber information and network policies.
10 [00061] Unified Data Management (UDM) [124] is a network function that
centralizes the management of subscriber data, including authentication, authorization, and subscription information.
[00062] Application Function (AF) [126] is a network function that represents
external applications interfacing with the 5G core network to access network
15 capabilities and services.
[00063] User Plane Function (UPF) [128] is a network function responsible for
handling user data traffic, including packet routing, forwarding, and QoS enforcement. 20
[00064] Data Network (DN) [130] refers to a network that provides data services
to user equipment (UE) in a telecommunications system. The data services may include but are not limited to Internet services, private data network related services.
25 [00065] Referring to Figure 2, illustrating the communication channel between
an Access and Mobility Management Function (AMF) unit [200] and a Network Data Analytics Function (NWDAF) unit [200A], and also shows the system [300] for optimizing communication in a network by reducing the number of transactions by providing communication between the AMF unit [200] and the NWDAF unit
30 [200A]. The AMF unit [200] is a unit capable for performing the Access and
18

Mobility Management Function (AMF) [106]. The NWDAF unit [200A] is a unit
capable for performing the Network Data Analytics Function (NWDAF) which is
a standard network function that leverages the power of network data analytics and
AI/ML to generate the real-time operational intelligence driving network
5 automation and service orchestration in the 5G Core. The Network Data Analytics
Function (NWDAF) provides specific analytics such as for Identifier of network slice instance and a load level information for that network slice instance. As is stated earlier, the UE [102] communicates to the AMF unit [200] for initiating communication over the network. The AMF unit [200] connects the UE [102] to
10 the network. The AMF unit [200] contains the information of users registered with
the network. For network optimization, to know information and subscriber data analytics for the registered users and their session information is essential part for providing communication over the network. In the present disclosure, the AMF unit [200] contains an Event Exposure Service [202], a Core Logic Module [204] and
15 an AMF database [206]. The AMF Database [206] is the database which may
contain information relating to functions performed by the AMF unit [200]. The present disclosure provides a custom event that may be named such as ‘NUM_OF_ESTD_PDU_SESSIONS_REPORT’ on the event exposure service [202] of the AMF unit [200]. Now any NF can subscribe to the AMF unit [200] for
20 this event in a subscription request. Further, one custom Information element (IE)
is provided in the subscription request towards the AMF unit [200] such as by the name of ‘PLMN_ID’, in which any node can pass PLMN name for which this subscription is needed. Now any NF can subscribe to the AMF unit [200] for any event and can pass a PLMN value in subscription for the calculation of the required
25 data needed by this NF. The PLMN value comprises a PLMN ID that is an identifier
used to identify the radio networks or RAN that are currently in use. The Core Logic module [204] is added at the AMF unit [200] which can use the PLMN value coming in subscription request and apply the process to calculate the required data which is needed by the subscriber. The core logic module [204] is a component
30 node of an AMF unit [200] which calculates the number of registered users, number
19

of PDU sessions, etc and may also be considered as a brain of the AMF unit [200]
which collects the information related to number of registered users and PDU
sessions, and maintains the data inside a database within itself, and provides the
data required to be sent to the NWDAF unit [200A] for subscription notification.
5 The process to calculate the required data is the process for calculating the number
of registered users and the number of PDU sessions in the telecommunication network.
[00066] Furthermore, the system [300] for optimizing communication in
10 network removes the requirement of processing from SMF for knowing PDU
session information. The subscription request sent towards the AMF unit [200] from the NWDAF unit [200A] will include two events. One is a UES_IN_AREA_REPORT and second is a proposed custom event NUM_OF_ESTD_PDU_SESSIONS_REPORT. This subscription request includes
15 a Single – Network Slice Selection Assistance Information (S-NSSAI) and one
custom IE PLMN ID, which have PLMN value. The NWDAF unit [200A] also sends the time interval after which it needs notifications. After receiving this subscription request, the AMF unit [200] saves both the events and values of the S-NSSAI and the PLMN. Whenever any user gets registered at the AMF unit [200]
20 or whenever any PDU session gets established at the AMF unit [200], the AMF unit
[200] validates these events with given S-NSSAI value and given PLMN value. If it matches both of the values that came in subscription request, then AMF unit [200] considers these values for calculating final values to be send towards the NWDAF unit [200A]. When periodic time interval passes at AMF unit [200], the AMF unit
25 [200] needs to send notification to NWDAF [200A]. The AMF unit [200] includes
value from calculated values for “UEs in Area Report” event and also calculated value for custom event “Number of PDU Sessions Report” for given S-NSSAI and for given custom IE PLMN in a single notification request towards the NWDAF unit [200A]. These notifications may go periodically for the given time interval.
30
20

[00067] Referring to Figure 3, an exemplary block diagram of a system [300]
comprising the AMF unit [200] as per the present disclosure is illustrated. The
system [300] comprises the access and mobility management function (AMF) unit
[200]. The AMF unit [200] further comprises a transceiver unit [302], a storage unit
5 [304], and a verification unit [306], all the units are connected to each other. The
transceiver unit [302] may be a transmission unit, a reception unit, or a combination thereof. The storage unit [304] may be a memory unit which comprises capacity to store information. The verification unit [304] is a unit which is capable of verifying an information based on certain other information.
10
[00068] More particularly, the transceiver unit [302] is configured to
dynamically receive a subscription request from a network analytics function (NWDAF) unit [200A]. The subscription request is received to obtain a data associated with a first event and a custom event. In an implementation, the
15 subscription request comprises at least one of a single-network slice selection
assistance information (S-NSSAI) and a custom Information Element (IE) comprising a PLMN identifier (ID). The PLMN identifier or the PLMN value which comprises a PLMN ID is the identifier which is used to identify the radio networks in use. The S-NSSAI is a signalling parameter used to convey slice-related
20 information during the initial connection setup and ongoing communication
between the user equipment and the network.
[00069] The storage unit [304] is configured to store the first event and the
custom event in the AMF database [206]. The transceiver unit [302] is also
25 configured to dynamically receive a PDU session request from one or more user
equipment(s) [102]. The PDU session request may be a request for seeking the PDU sessions. The PDU session is a logical connection between the user equipment and a data network.
21

[00070] The verification unit [306] is configured to verify a number of PDU
session request based on the first event and the custom event. The first event can be
an UES_IN_AREA_REPORT event. The data associated with the first event may
correspond to a number of registered users in a specified area. The
5 UES_IN_AREA_REPORT event can be the event which identifies the registered
users that have been detected in an area which may be specified by the service
providers. The custom event can be a
NUM_OF_ESTD_PDU_SESSIONS_REPORT event, and the data associated with
the custom event can correspond to a number of established PDU sessions for a
10 given slice and a given Public Land Mobile Network (PLMN). The slice refers to
the multiple virtual network instances on a shared physical infrastructure.
[00071] The transceiver unit [302] is also configured to transmit a subscription
notification to the network data analytics function (NWDAF) unit [200A]. The
15 subscription notification may comprise a data associated with a number of
registered UEs and a number of established PDU session(s) in a pre-defined time interval. The data associated with the number of registered UEs and the number of established PDU session(s) is the number of UEs that are registered and the numbers of PDU sessions that have been established.
20
[00072] The disclosure encompasses that the AMF unit [200] transmits the
subscription notification to the NWDAF unit [200A] after the pre-defined time interval. The pre-defined time interval may be preconfigured by the service provider. The disclosure also encompasses that the subscription notification may
25 also be sent periodically after the pre-defined time interval. In another
implementation, the subscription notification is based on at least one of the first event and the custom event.
[00073] Due to the configuration as known in the art prior to the implementation
30 of the present disclosure, if any NF is required to subscribe to receive the periodic
22

notifications to the SMF for the number of PDU sessions established in the pre¬
defined time interval, which may be in one implementation, say for example, be 15
minutes. Then that particular NF would have to subscribed to an PDU_SES_EST
event. This event would notify towards subscriber for all the PDU sessions that
5 were established. For example, in an implementation, if say, 1500 PDU sessions
are established in the pre-defined time interval, say 15 minutes, then the 1500
notifications will be sent to the subscriber NF. Further, there is no option for
providing the PLMN value directly, in case if any NF wants to subscribe towards
AMF for any event and then for providing the area. The only available options
10 remaining are the TrackingAreaList, Prald, etc., but no PLMN value.
[00074] However, as per the configuration disclosed in the present disclosure,
the AMF will not send that many notifications of the PDU sessions but will only
send one notification after the pre-defined intervals as per the subscription request,
15 and as per the example, will only send a single notification which would include
the number of PDU sessions established in the last 15 minutes based on the pre-defined interval.
[00075] Referring to Figure 4, an exemplary method flow diagram [400] for
20 providing a subscription notification in a communication network is shown, as per
implementations of the present disclosure. The method [400] may also be
implemented for indicating the process for optimizing communication in network
by reducing the number of transactions between the AMF unit [200] and the
NWDAF unit [200A], in accordance with exemplary implementations of the
25 present disclosure. As shown in Figure 4, the method [400] starts at step [402].
[00076] At step [404], the method [400] as disclosed by the present disclosure
comprises dynamically receiving, by a transceiver unit [302] at an access and
mobility management function (AMF) unit [200], a subscription request from a
30 network data analytics function (NWDAF) unit [200A], wherein the subscription
23

request is received to obtain a data associated with a first event and a data associated
with a custom event. The AMF unit [200] receives the subscription request with the
first event and the custom event from the NWDAF unit [200A]. The first event
represents the number of registered users and the number of PDU sessions per slice
5 per PLMN in a single notification and the custom event represents the number of
PDU sessions for given slice and given PLMN. The subscription request may have first event which is the UES_IN_AREA_REPORT event The custom event may be the NUM_OF_ESTD_PDU_SESSIONS_REPORT event.
10 [00077] Next, at step [406], the method [400] as disclosed by the present
disclosure comprises storing, by a storage unit [304] at the access and mobility
management function (AMF) unit [200], the data associated with the first event and
the data associated with the custom event in the AMF database [206]. The data
associated with the first event corresponds to a number of registered users in the
15 specified area. The data associated with the custom event can correspond to the
event of number of established PDU sessions for a given slice and a given PLMN.
The data associated with the custom event can contain the Single – Network Slice
Selection Assistance Information (S-NSSAI), the custom Information Element (IE)
that comprises a PLMN identifier (ID), or the PLMN value or the values of the S-
20 NSSI and the PLMN.
[00078] Next, at step [408], the method [400] as disclosed by the present
disclosure comprises dynamically receiving, by the transceiver unit [302] at the
access and mobility management function (AMF) unit [200], a protocol data unit
25 (PDU) session request from one or more user equipment(s) (UE) [102]. This PDU
session request may be received, for example when a UE [102] request for a communication with another UE [102] or service.
[00079] Next, at step [410], the method [400] as disclosed by the present
30 disclosure comprises verifying, by the verification unit [306] at the access and
24

mobility management function (AMF) unit [200], a number of PDU session request
based on the first event and the custom PLMN event. When any UE [102] gets
registered at AMF or whenever any PDU session request gets established at AMF
unit [200], the AMF verifies PDU session with first event and custom PLMN event,
5 given S-NSSAI and given PLMN value. If it matches both of the values that came
in subscription request, then AMF unit [200] may consider these values for calculating final values to be send towards the NWDAF unit [200A].
[00080] Next, at step [412], the method [400] as disclosed by the present
10 disclosure comprises transmitting, by the transceiver unit [302] at the access and
mobility management function (AMF) unit [200], a subscription notification to the
network data analytics function (NWDAF) unit [200A]. The AMF unit [200] sends
subscription notification to NWDAF unit [200A] when periodic time interval
passes at AMF unit [200]. The AMF unit [200] may include value calculated values
15 for “UES_IN_AREA_REPORT” event and also calculated value for custom event
“NUM_OF_ESTD_PDU_SESSIONS_REPORT” for given S-NSSAI and for given custom IE PLMN in a single notification request towards NWDAF unit [200A]. The subscription notifications may go periodically for the given time interval.
20 [00081] The subscription notification may also comprise a data associated with
the number of registered UEs and the number of established PDU session(s) in the pre-defined time interval. Further, the AMF unit [200] transmits the subscription notification to the NWDAF unit [200A] over the pre-defined time interval. In another implementation of the present disclosure, the subscription notification may
25 also be sent periodically after the pre-defined time interval. In another
implementation, the subscription notification may also be based at least on one of the first event and the custom event.
[00082] Thereafter, the method [400] terminates at step [414].
30
25

[00083] Referring to Figure 5, an exemplary call flow diagram, for optimizing
communication in network by reducing the number of transactions in network, the
NWDAF (NF Service Consumer) communicates with the AMF (Producer). As
shown in Figure 5, at step 1, the NWDAF unit [200A] sends subscription request
5 including events, custom event, custom IE for PLMN value. It may send a POST
request or an AmfCreateEventSubscription request. Further, the NWDAF unit [200A] also sends the time interval after which it needs the notifications. At step 2, the AMF responds with created event subscription field. In an exemplary implementation it may respond with a “201 Created” response as known in the art
10 for displaying a success status. Further, at step 3, after given periodic interval, the
AMF unit [200] calculates the value of number of registered user with value of number of PDU sessions established and send notification towards the NWDAF [200A]. In an exemplary implementation, it sends a POST request or an AmfEventNotification request. The NWDAF unit [200A] responses success
15 acknowledgement towards the AMF unit [200] and this process is repeated for the
given time interval. The NWDAF unit [200A] may also respond with a 204 No Context Response for acknowledgement.
[00084] Fig. 6 illustrates an exemplary block diagram of a computing device
20 [600] upon which the features of the present disclosure may be implemented in
accordance with exemplary implementation of the present disclosure. In an
implementation, the computing device [600] may also implement the method [400]
for providing a subscription notification in a communication network by utilising
the system [300]. In another implementation, the computing device [600] itself
25 implements the method [400] for a subscription notification in a communication
network using one or more units configured within the computing device [600], wherein said one or more units are capable of implementing the features as disclosed in the present disclosure.
26

[00085] The computing device [600] may include a bus [602] or other
communication mechanism for communicating information, and a hardware
processor [604] coupled with bus [602] for processing information. The hardware
processor [604] may be, for example, a general purpose microprocessor. The
5 computer system [600] may also include a main memory [606], such as a random
access memory (RAM), or other dynamic storage device, coupled to the bus [602] for storing information and instructions to be executed by the processor [604]. The main memory [606] also may be used for storing temporary variables or other intermediate information during execution of the instructions to be executed by the
10 processor [604]. Such instructions, when stored in non-transitory storage media
accessible to the processor [604], render the computer system [600] into a special-purpose machine that is customized to perform the operations specified in the instructions. The computer system [600] further includes a read only memory (ROM) [608] or other static storage device coupled to the bus [602] for storing static
15 information and instructions for the processor [604].
[00086] A storage device [610], such as a magnetic disk, optical disk, or solid-
state drive is provided and coupled to the bus [602] for storing information and instructions. The computer system [600] may be coupled via the bus [602] to a
20 display [612], such as a cathode ray tube (CRT), Liquid crystal Display (LCD),
Light Emitting Diode (LED) display, Organic LED (OLED) display, etc. for displaying information to a computer user. An input device [614], including alphanumeric and other keys, touch screen input means, etc. may be coupled to the bus [602] for communicating information and command selections to the processor
25 [604]. Another type of user input device may be a cursor controller [616], such as
a mouse, a trackball, or cursor direction keys, for communicating direction information and command selections to the processor [604], and for controlling cursor movement on the display [612]. This input device typically has two degrees of freedom in two axes, a first axis (e.g., x) and a second axis (e.g., y), that allow
30 the device to specify positions in a plane.
27

[00087] The computer system [600] may implement the techniques described
herein using customized hard-wired logic, one or more ASICs or FPGAs, firmware
and/or program logic which in combination with the computer system [600] causes
5 or programs the computer system [600] to be a special-purpose machine. According
to one implementation, the techniques herein are performed by the computer system
[600] in response to the processor [604] executing one or more sequences of one or
more instructions contained in the main memory [606]. Such instructions may be
read into the main memory [606] from another storage medium, such as the storage
10 device [610]. Execution of the sequences of instructions contained in the main
memory [606] causes the processor [604] to perform the process steps described herein. In alternative implementations of the present disclosure, hard-wired circuitry may be used in place of or in combination with software instructions.
15 [00088] The computer system [600] also may include a communication
interface [618] coupled to the bus [602]. The communication interface [618] provides a two-way data communication coupling to a network link [620] that is connected to a local network [622]. For example, the communication interface [618] may be an integrated services digital network (ISDN) card, cable modem,
20 satellite modem, or a modem to provide a data communication connection to a
corresponding type of telephone line. As another example, the communication interface [618] may be a local area network (LAN) card to provide a data communication connection to a compatible LAN. Wireless links may also be implemented. In any such implementation, the communication interface [618]
25 sends and receives electrical, electromagnetic or optical signals that carry digital
data streams representing various types of information.
[00089] The computer system [600] can send messages and receive data,
including program code, through the network(s), the network link [620] and the
30 communication interface [618]. In the Internet example, a server [630] might
28

transmit a requested code for an application program through the Internet [628], the ISP [626], the local network [622] and the communication interface [618]. The received code may be executed by the processor [604] as it is received, and/or stored in the storage device [610], or other non-volatile storage for later execution. 5
[00090] According to another aspect of the present disclosure, a User Equipment
(UE) [102] connected to a communication network is disclosed.
[00091] The UE comprises a memory and a processor coupled to the memory.
10 The processor is configured to: transmit a protocol data unit (PDU) session request
to an access and mobility management function (AMF) unit [200], wherein the PDU session request, when received by the AMF unit, is used for transmission of a subscription notification to a network data analytics function (NWDAF) unit.
15 [00092] Further, the AMF unit is to transmit the subscription notification to the
NWDAF unit based on: dynamically receiving a subscription request from a network data analytics function (NWDAF) unit [200A], wherein the subscription request is received to obtain a data associated with a first event and a data associated with a custom event; storing the data associated with the first event and the data
20 associated with the custom event in an AMF database [206]; on dynamically
receiving the PDU session request from the UE [102], verifying a number of PDU session request based on the first event and the custom event; and transmitting the subscription notification to the NWDAF unit [200A].
25 [00093] According to another aspect of the present disclosure, a non-transitory
computer readable storage medium storing one or more instructions for providing a subscription notification in a communication network are provided. The one or more instructions include executable code which, when executed by one or more units of a system [300], causes: a transceiver unit [302] of the system [300] to
30 dynamically receive a subscription request from an NWDAF unit [200A], wherein
29

the subscription request is received to obtain a data associated with a first event and
a custom event; a storage unit [304] of the system [300] at the AMF unit [200],the
data associated with the first event and the data associated with the custom event an
AMF database [206]; the transceiver unit [304] of the system [300] to dynamically
5 receive a protocol data unit (PDU) session request from one or more user
equipment(s) (UEs) [102]; a verification unit [306] at the AMF unit [200] to verify
a number of PDU session request based on the first event and the custom event; and
the transceiver unit [304] at the AMF unit [200] of the system [300] to transmit the
subscription notification to the network data analytics function (NWDAF) unit
10 [200A].
[00094] As is evident from the above, the present disclosure provides a
technically advanced solution for optimized communication in network by reducing the number of transactions in efficient way such as by clubbing two events such as
15 number of registered users and number of PDU sessions per slice per PLMN in
single notification, and also by introduction of the custom event for the number of PDU sessions for the given slice and given PLMN, instead of sending the notifications for every PDU establishments towards the NWDAF unit [200A]. The NWDAF unit [200A] can subscribe to the AMF unit [200] for number of PDU
20 sessions. The NWDAF unit [200A] does not need to go to SMF for number of PDU
sessions and to the AMF unit [200], for number of registered users separately. The NWDAF unit [200A] does not need to manage two subscriptions separately. Both the requirements can be fulfilled through the AMF unit [200] only and that through single subscription. Further, the AMF unit [200] is not required to send notifications
25 for all the PDU established as per the implementation of the configuration disclosed
in the present disclosure. It will only send one notification after given periodic interval in the Subscription request. Therefore, if NF has given the timer interval of 15 minutes, then the AMF unit [200] will send one notification in 15 minutes, and will include the total number of PDU sessions (e.g. 1500, if 1500 get established)
30

established in last 15 minutes. This data analytics of subscribers or registered users helps out for network operator to estimate the load for specific PLMN network area.
[00095] While considerable emphasis has been placed herein on the disclosed
5 implementations, it will be appreciated that many implementations can be made and
that many changes can be made to the implementations without departing from the
principles of the present disclosure. These and other changes in the implementations
of the present disclosure will be apparent to those skilled in the art, whereby it is to
be understood that the foregoing descriptive matter to be implemented is illustrative
10 and non-limiting.
[00096] Further, in accordance with the present disclosure, it is to be
acknowledged that the functionality described for the various the components/units can be implemented interchangeably. While specific embodiments may disclose a
15 particular functionality of these units for clarity, it is recognized that various
configurations and combinations thereof are within the scope of the disclosure. The functionality of specific units as disclosed in the disclosure should not be construed as limiting the scope of the present disclosure. Consequently, alternative arrangements and substitutions of units, provided they achieve the intended
20 functionality described herein, are considered to be encompassed within the scope
of the present disclosure.
31

We Claim:
1. A method for providing a subscription notification in a communication network,
the method comprising:
5 - dynamically receiving, by a transceiver unit [302] at an access and mobility
management function (AMF) unit [200], a subscription request from a
network data analytics function (NWDAF) unit [200A], wherein the
subscription request is received to obtain a data associated with a first event
and a data associated with a custom event;
10 - storing, by a storage unit [304] at the access and mobility management
function (AMF) unit [200], the data associated with the first event and the data associated with the custom event in an AMF database [206];
- dynamically receiving, by the transceiver unit [302] at the access and
mobility management function (AMF) unit [200], a protocol data unit
15 (PDU) session request from one or more user equipment(s) (UEs) [102];
- verifying, by a verification unit [306] at the access and mobility
management function (AMF) unit [200], a number of PDU session request
based on the first event and the custom event; and
- transmitting, by the transceiver unit [302] at the access and mobility
20 management function (AMF) unit [200], the subscription notification to the
network data analytics function (NWDAF) unit [200A].
2. The method as claimed in claim 1, wherein the subscription notification
comprises a data associated with a number of registered UEs and a number of
25 established PDU session (s) in a pre-defined time interval.
3. The method as claimed in claim 2, wherein the subscription notification is
transmitted to the network data analytics function (NWDAF) unit [200A] after
the pre-defined time interval.
30
32

4. The method as claimed in claim 1, wherein the first event is an UES_IN_AREA_REPORT event and the data associated with the first event corresponds to a number of registered users in a specified area.
5 5. The method as claimed in claim 3, wherein the subscription notification is sent
periodically after the pre-defined time interval.
6. The method as claimed in claim 1, wherein the custom event is a
NUM_OF_ESTD_PDU_SESSIONS_REPORT event and the data associated
10 with the custom event corresponds to a number of established PDU sessions for
a given slice and a given Public Land Mobile Network (PLMN).
7. The method as claimed in claim 1, wherein the subscription notification is based
at least on one of the first event and the custom event.
15
8. The method as claimed in claim 1, wherein the subscription request comprises
at least one of a single-network slice selection assistance information (S-
NSSAI) and a custom Information Element (IE) comprising a PLMN identifier
(ID).
20
9. A system [300] for providing a subscription notification in a communication
network, the system [300] comprising:
an access and mobility management function (AMF) unit [200] comprising:
- a transceiver unit [302] configured to dynamically receive a
25 subscription request from a network data analytics function (NWDAF)
unit [200A], wherein the subscription request is received to obtain a data associated with a first event and a custom event,
- a storage unit [304], connected at least to the transceiver unit [302], the
storage unit [304] configured to store the data associated with the first
33

event and the data associated with the custom event in an AMF database [206],
- the transceiver unit [302] configured to dynamically receive a protocol
data unit (PDU) session request from one or more user equipment(s)
5 (UEs) [102],
- a verification unit [306] connected at least to the storage unit [304], the
verification unit [306] configured to verify a number of PDU session
request based on the first event and the custom event, and
- the transceiver unit [302] configured to transmit the subscription
10 notification to the network data analytics function (NWDAF) unit
[200A].
10. The system [300] as claimed in claim 9, wherein the subscription notification
comprises a data associated with a number of registered UEs and a number of
15 established PDU session (s) in a pre-defined time interval.
11. The system [300] as claimed in claim 10, wherein the access and mobility
management function (AMF) unit [200] is configured to transmit the
subscription notification to the network data analytics function (NWDAF) unit
20 [200A] after the pre-defined time interval.
12. The system [300] as claimed in claim 9, wherein the first event is an
UES_IN_AREA_REPORT event and the data associated with the first event
corresponds to a number of registered users in a specified area.
25
13. The system [300] as claimed in claim 9, wherein the subscription notification is sent periodically after the pre-defined time interval.
14. The system [300] as claimed in claim 9, wherein the custom event is a
30 NUM_OF_ESTD_PDU_SESSIONS_REPORT event and the data associated
34

with the custom event corresponds to a number of established PDU sessions for a given slice and a given Public Land Mobile Network (PLMN).
15. The system [300] as claimed in claim 9, wherein the subscription notification is
5 based on at least one of the first event and the custom event.
16. The system [300] as claimed in claim 9, wherein the subscription request
comprises at least one of a single-network slice selection assistance information
(S-NSSAI) and a custom Information Element (IE) comprising a PLMN
10 identifier (ID).
17. A User Equipment (UE) [102] connected to a communication network, the UE
[102] comprising:
a memory; and
15 a processor coupled to the memory, wherein the processor is configured
to:
transmit a protocol data unit (PDU) session request to an access and
mobility management function (AMF) unit [200], wherein the PDU session
request, when received by the AMF unit, is used for transmission of a
20 subscription notification to a network data analytics function (NWDAF)
unit, wherein the AMF unit is to transmit the subscription notification to the NWDAF unit based on:
o dynamically receiving a subscription request from a network data
analytics function (NWDAF) unit [200A], wherein the subscription
25 request is received to obtain a data associated with a first event and
a data associated with a custom event;
o storing the data associated with the first event and the data associated
with the custom event in an AMF database [206];
35

o on dynamically receiving the PDU session request from the UE [102], verifying a number of PDU session request based on the first event and the custom event; and
o transmitting the subscription notification to the NWDAF unit
5 [200A].
Dated this the 3rd day of July, 2023
(GARIMA SAHNEY)
IN/PA-1826
AGENT OF THE APPLICANT(S) 30
OF SAIKRISHNA AND ASSOCIATES