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 MANAGING DATA SESSIONS IN WIRELESS 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 MANAGING DATA SESSIONS IN WIRELESS
COMMUNICATION NETWORK
TECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to network performance
management systems. More particularly, embodiments of the present disclosure relate to methods and systems for managing data sessions in a wireless communication network.
BACKGROUND
[0002] The following description of the related art is intended to provide background
information pertaining to the field of the disclosure. This section may 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 is used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of the prior art.
[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 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 deployed, promising even faster data speeds, low latency, and the ability to connect multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users.
[0004] In a network link or packet data protocol (PDP), flips are a common scenario which
causes a wireless user equipment (UE) to behave randomly. Sometimes, the UE overwrites its existing Packet Data Unit (PDU) session in a core network and sends a new data session creation request. This behavior may arise due to various wireless network conditions or

malicious behavior of the UE itself. If the dynamic IP allocation is enabled in the network, IP address of that UE is updated for every data session creation request and the old session is cleared. In addition, applications or services running on the UE recognize this IP address change, and the end server needs to be updated with this new IP address to ensure that downlink (DL) packets are sent to the correct destination. Existing solutions have not defined any procedure to retain data session in the network in case of device misbehavior, leading to a negative impact on the services or applications running on the UE and the network.
[0005] Thus, there exists an imperative need in the art to provide a solution that can
overcome the limitations of the existing technologies.
OBJECTS OF THE DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one embodiment
disclosed herein satisfies are listed herein below.
[0007] It is an object of the present disclosure to provide a system and a method for
managing sessions in a wireless communication network.
[0008] It is another object of the present disclosure to provide a solution that can delay UE
initiated data sessions deletion in a network for a configurable time.
[0009] It is yet another object of the present disclosure to provide a solution that can
provide a configurable timer to delay UE initiated data sessions deletion in the network.
[0010] It is yet another object of the present disclosure to provide a solution to retain
existing IP address in the wireless communication network.
[0011] It is yet another object of the present disclosure to provide a solution to reduce
network transactions per seconds (TPS).
SUMMARY

[0012] 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 of the claimed subject matter.
[0013] An aspect of the present disclosure may relate to a method for managing data
sessions in a wireless communication network. The method comprises receiving, by a transceiver unit, at a gateway control plane function, a first request from a user equipment (UE) via a network function (NF) for deletion of a first data session. In addition, one or more network resources are allocated to the first data session. The method further comprises deferring, by a deferring unit at the gateway control plane function, an execution of the first request for a pre-defined time duration. Furthermore, the method comprises determining, by a determination unit at the gateway control plane function, whether a second request for establishment of a second data session is received during the pre-defined time duration. In case the second request is received within the pre-defined time duration, the method comprises re-utilizing, by an implementation unit at the gateway control plane function, the one or more network resources already allocated to the first data session for establishing the second data session.
[0014] In an exemplary aspect of the present disclosure, an internet protocol (IP) address
path of the second data session is same as that of an IP address path of the first data session.
[0015] In an exemplary aspect of the present disclosure, the method comprises mapping,
by the implementation unit at the gateway control plane function, a user identifier (user ID) in the second request received from the UE with a user identifier (user ID) in the first data session available locally at the gateway control plane function.
[0016] In an exemplary aspect of the present disclosure, in case the wireless
communication network is a fifth generation (5G) communication network, then, the first and second data session is a Protocol Data Unit (PDU) session, the network function (NF) is Access and Mobility Management Function (AMF), and the gateway control plane function is a Session Management Function (SMF).
[0017] In an exemplary aspect of the present disclosure, in case the wireless
communication network is a fourth generation (4G) communication network, then, the first

and second data session is a Packet Data Network (PDN) session, the network function (NF) is Mobility Management Entity (MME), and the gateway control plane function is a Packet Gateway Control Plane (PGW-C).
[0018] In an exemplary aspect of the present disclosure, in an absence of receipt of the
second request within the pre-defined time duration, the method comprises: deleting, by the implementation unit, at the gateway control plane function, the first data session after expiration of the pre-defined time duration.
[0019] Another aspect of the present disclosure may relate to a system for managing data
sessions in a wireless communication network. The system comprises a transceiver unit configured to receive, at a gateway control plane function, a first request from a user equipment (UE) for deletion of a first data session. Further, one or more network resources are allocated to the first data session. The system further comprises a deferring unit connected at least to the transceiver unit. The deferring unit is configured to defer, at the gateway control plane function, an execution of the first request for a pre-defined time duration. Furthermore, the system comprises a determination unit connected at least to the deferring unit. The determination unit is configured to determine, at the gateway control plane function, whether a second request for establishment of a second data session is received within the pre-defined time duration. Moreover, the system comprises an implementation unit connected at least to the determination unit. In case the second request is received within the pre-defined time duration, the implementation unit is configured to re-utilize, at the gateway control plane function, the one or more network resources already allocated to the first data session for establishing the second data session.
[0020] Yet another aspect of the present disclosure may relate to a non-transitory
computer-readable storage medium, storing instructions for managing data sessions in a wireless communication network, the storage medium comprising executable code which, when executed by one or more units of a system, causes: a transceiver unit to receive, at a gateway control plane function, a first request from a user equipment (UE) via a network function (NF) for deletion of a first data session, wherein one or more network resources are allocated to the first data session; a deferring unit to defer, at the gateway control plane function, an execution of the first request for a pre-defined time duration; a determination unit to determine, at the gateway control plane function, whether a second request for

establishment of a second data session is received during the pre-defined time duration; and an implementation unit to re-utilize, at the gateway control plane function, the one or more network resources already allocated to the first data session for establishing the second data session, in case the second request is received within the pre-defined time duration.
DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which are incorporated herein, and constitute a part
of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same 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. Also, the embodiments shown in the figures are not to be construed as limiting the disclosure, but the possible variants of the method and system according to the disclosure are illustrated herein to highlight the advantages of the disclosure. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components or circuitry commonly used to implement such components.
[0022] FIG. 1 illustrates an exemplary block diagram representation of 5th generation core
(5GC) network architecture, in accordance with exemplary implementations of the present disclosure.
[0023] FIG. 2 illustrates an exemplary block diagram of a computing device upon which
the features of the present disclosure may be implemented in accordance with exemplary implementation of the present disclosure.
[0024] FIG. 3 illustrates an exemplary block diagram of a system for managing sessions
in a wireless communication network, in accordance with exemplary implementations of the present disclosure.
[0025] FIG. 4 illustrates a method flow diagram for managing sessions in the wireless
communication network, in accordance with exemplary implementations of the present disclosure.

[0026] The foregoing shall be more apparent from the following more detailed description
of the disclosure.
DETAILED DESCRIPTION
[0027] In the following description, for the purposes of explanation, various specific
details are set forth in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent, however, that embodiments 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 problems discussed above.
[0028] The ensuing description provides exemplary embodiments only, and is not
intended to limit the scope, applicability, or configuration of the disclosure. Rather, the ensuing description of the exemplary embodiments will provide those skilled in the art with an enabling description for implementing an exemplary embodiment. 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.
[0029] Specific details are given in the following description to provide a thorough
understanding of the embodiments. However, it will be understood by one of ordinary skill in the art that the embodiments 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 obscure the embodiments in unnecessary detail.
[0030] Also, it is noted that individual embodiments 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 operations as a sequential process, many of the operations may be performed in 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.

[0031] 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 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 any additional or other elements.
[0032] 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 processor, a plurality of microprocessors, one or more microprocessors in association with a Digital Signal Processing (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 the system according to the present disclosure. More specifically, the processor or processing unit is a hardware processor.
[0033] As used herein, “a user equipment”, “a user device”, “a smart-user-device”, “a
smart-device”, “an electronic device”, “a mobile device”, “a handheld device”, “a wireless communication device”, “a mobile communication device”, “a 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, 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 unit(s) which are required to implement the features of the present disclosure.

[0034] 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”), magnetic disk storage media, optical
5 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.
[0035] As used herein, “interface” or “user interface refers to a shared boundary across
10 which two or more separate components of a system exchange information or data. The
interface may also be referred to a set of rules or protocols that define communication or
interaction of one or more modules or one or more units with each other, which also includes
the methods, functions, or procedures that may be called.
15 [0036] All modules, units, components used herein, unless explicitly excluded herein, may
be software modules or hardware processors, the processors being a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASIC), Field
20 Programmable Gate Array circuits (FPGA), any other type of integrated circuits, etc.
[0037] As used herein, the transceiver unit include at least one receiver and at least one
transmitter configured respectively for receiving and transmitting data, signals, information
or a combination thereof between units/components within the system and/or connected with
25 the system.
[0038] As discussed in the background section, the current known solutions have several
shortcomings. The present disclosure aims to overcome the above-mentioned and other
existing problems in this field of technology by providing a method and system of managing
30 data sessions in a wireless communication network. The present disclosure discloses
deferring deletion of data sessions in the network for a configurable time. In case another data session is created within the configurable time, same session can be reused, and the previously assigned IP address can be reallocated. Moreover, the configurable time can be set by an operator as per the requirement.
9

[0039] FIG. 1 illustrates an exemplary block diagram representation of a fifth (5th)
generation core (5GC) network architecture [100], in accordance with an exemplary
implementation of the present disclosure. As shown in FIG. 1, the 5GC network architecture
5 [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 Authentication and Authorization Function (NSSAAF) [114], a Network Slice Selection Function (NSSF) [116], a Network Exposure
10 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], and a Data Network (DN) [130]. In one implementation, the SMF [108] may handle a control function, namely a gateway control plane function [132]. All the components are assumed to be connected to each other in a
15 manner as obvious to the person skilled in the art for implementing features of the present
disclosure.
[0040] The Radio Access Network (RAN) [104] is the part of a mobile
telecommunications system that connects the user equipment (UE) [102] to a core network
20 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.
[0041] The Access and Mobility Management Function (AMF) [106] is a 5G core network
function responsible for managing access and mobility aspects, such as, without limitations,
25 UE registration, connection, and reachability. It also handles mobility management
procedures, such as, without limitations, handovers and paging.
[0042] The Session Management Function (SMF) [108] is a 5G core network function
responsible for managing session-related aspects, such as establishing, modifying, and
30 releasing sessions. It coordinates with the User Plane Function (UPF) [128] for data
forwarding and further handles IP address allocation and QoS enforcement.
10

[0043] The 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.
5 [0044] The Authentication Server Function (AUSF) [112] is a network function in the 5G
core responsible for authenticating the UE [102] (or a plurality of such UEs) during registration and providing security services. It generates and verifies authentication vectors and tokens.
10 [0045] The Network Slice Specific Authentication and Authorization Function (NSSAAF)
[114] is a network function that provides authentication and authorization services specific to network slices. It ensures that the UE [102] can access only the slices for which they are authorized.
15 [0046] The Network Slice Selection Function (NSSF) [116] is a network function
responsible for selecting the appropriate network slice for the UE [102] based on factors such as subscription, requested services, and network policies.
[0047] The Network Exposure Function (NEF) [118] is a network function that exposes
20 capabilities and services of the 5G network to external applications, enabling integration with
third-party services and applications.
[0048] The 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
25 the discovery and dynamic registration of network functions.
[0049] The 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. 30
11

[0050] The Unified Data Management (UDM) [124] is a network function that centralizes
the management of subscriber data, including authentication, authorization, and subscription information.
5 [0051] The Application Function (AF) [126] is a network function that represents external
applications interfacing with the 5G core network to access network capabilities and services.
[0052] The User Plane Function (UPF) [128] is a network function responsible for
handling user data traffic, including packet routing, forwarding, and QoS enforcement. 10
[0053] The Data Network (DN) [130] refers to a network that provides data services to the
UE [102] in a telecommunications system. The data services may include, without limitations, Internet services, private data network related services.
15 [0054] The 5GC network architecture also comprises a plurality of interfaces for
connecting the network functions with a network entity for performing the network functions. The NSSF [116] is connected with the network entity via the interface denoted as (Nbsf) interface in the figure. The NEF [118] is connected with the network entity via the interface denoted as (Nnef) interface in the figure. The NRF [120] is connected with the network entity
20 via the interface denoted as (Nnrf) interface in the figure. The PCF [122] is connected with
the network entity via the interface denoted as (Npcf) interface in the figure. The UDM [124] is connected with the network entity via the interface denoted as (Nudm) interface in the figure. The AF [126] is connected with the network entity via the interface denoted as (Naf) interface in the figure. The NSSAAF [114] is connected with the network entity via the
25 interface denoted as (Nnssaaf) interface in the figure. The AUSF [112] is connected with the
network entity via the interface denoted as (Nausf) interface in the figure. The AMF [106] is connected with the network entity via the interface denoted as (Namf) interface in the figure. The SMF [108] is connected with the network entity via the interface denoted as (Nsmf) interface in the figure. The SMF [108] is connected with the UPF [128] via the interface
30 denoted as (N4) interface in the figure. The UPF [128] is connected with the RAN [104] via
the interface denoted as (N3) interface in the figure. The UPF [128] is connected with the DN [130] via the interface denoted as (N6) interface in the figure. The RAN [104] is connected with the AMF [106] via the interface denoted as (N2). The AMF [106] is connected with the
12

RAN [104] via the interface denoted as (N1). The UPF [128] is connected with other UPF
[128] via the interface denoted as (N9). The interfaces such as Nnssf, Nnef, Nnrf, Npcf,
Nudm, Naf, Nnssaaf, Nausf, Namf, Nsmf, N9, N6, N4, N3, N2, and N1 can be referred to as
a communication channel between one or more functions or modules for enabling exchange
5 of data or information between such functions or modules, and network entities.
[0055] FIG. 2 illustrates an exemplary block diagram of a computing device [200] (herein,
also referred to as a computer system [200]) upon which one or more features of the present disclosure may be implemented, in accordance with an exemplary implementation of the
10 present disclosure. The computing device [200] may also implement a method for managing
sessions in a wireless communication network, utilising a system, or one or more sub-systems, provided in the network. In another implementation, the computing device [200] itself implements the method for managing sessions in the wireless communication network, using one or more units configured within the computing device [200], wherein said one or more
15 units are capable of implementing the features as disclosed in the present disclosure.
[0056] The computing device [200] may include a bus [202] or other communication
mechanism(s) for communicating information, and a hardware processor [204] coupled with bus [202] for processing said information. The hardware processor [204] may be, for example,
20 a general-purpose microprocessor. The computing device [200] may also include a main
memory [206], such as a random-access memory (RAM), or other dynamic storage device, coupled to the bus [202], for storing information and instructions to be executed by the processor [204]. The main memory [206] also may be used for storing temporary variables or other intermediate information during execution of the instructions to be executed by the
25 processor [204]. Such instructions, when stored in a non-transitory storage media accessible
to the processor [204], render the computing device [200] into a special purpose device that is customized to perform operations according to the instructions. The computing device [200] further includes a read only memory (ROM) [208] or other static storage device coupled to the bus [202] for storing static information and instructions for the processor [204].
30
[0057] A storage device [210], such as a magnetic disk, optical disk, or solid-state drive is
provided and coupled to the bus [202] for storing information and instructions. The computing device [200] may be coupled via the bus [202] to a display [212], such as a cathode ray tube
13

(CRT), Liquid crystal Display (LCD), Light Emitting Diode (LED) display, Organic LED
(OLED) display, etc., for displaying information to a user of the computing device [200]. An
input device [214], including alphanumeric and other keys, touch screen input means, etc.
may be coupled to the bus [202] for communicating information and command selections to
5 the processor [204]. Another type of user input device may be a cursor controller [216], such
as a mouse, a trackball, or cursor direction keys, for communicating direction information
and command selections to the processor [204], and for controlling cursor movement on the
display [212]. The cursor controller [216] typically has two degrees of freedom in two axes,
a first axis (e.g., x) and a second axis (e.g., y), that allows the cursor controller [216] to specify
10 positions in a plane.
[0058] The computing device [200] 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 computing device [200], causes or programs the computing
15 device [200] to be a special-purpose device. According to one implementation, the techniques
herein are performed by the computing device [200] in response to the processor [204] executing one or more sequences of one or more instructions contained in the main memory [206]. The one or more instructions may be read into the main memory [206] from another storage medium, such as the storage device [210]. Execution of the one or more sequences of
20 the one or more instructions contained in the main memory [206] causes the processor [204]
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.
25 [0059] The computing device [200] also may include a communication interface [218]
coupled to the bus [202]. The communication interface [218] provides two-way data communication coupling to a network link [220] that is connected to a local network [222]. For example, the communication interface [218] may be an integrated services digital network (ISDN) card, cable modem, satellite modem, or a modem to provide a data
30 communication connection to a corresponding type of telecommunication line. In another
example, the communication interface [218] 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 [218] sends and
14

receives electrical, electromagnetic or optical signals that carry digital data streams representing different types of information.
[0060] The computing device [200] can send and receive data, including program code,
5 messages, etc. through the network(s), the network link [220], and the communication
interface [218]. In an example, a server [230] might transmit a requested code for an
application program through the Internet [228], the ISP [226], the local network [222], the
host [224] and the communication interface [218]. The received code may be executed by the
processor [204] as it is received, and/or stored in the storage device [210], or other non-
10 volatile storage for later execution.
[0061] Referring to FIG. 3, an exemplary block diagram of a system [300] for managing
data sessions in the wireless communication network is shown, in accordance with an exemplary implementation of the present disclosure. The system [300] comprises at least one
15 transceiver unit [302], at least one deferring unit [304], at least one determination unit [306],
and at least one implementation unit [308]. Also, all of the components/ units of the system [300] are assumed to be connected to each other unless otherwise indicated below. As shown in FIG. 3, all units shown within the system [300] should also be assumed to be connected to each other. Also, in FIG. 3, only a few units are shown, however, the system [300] may
20 comprise multiple such units or the system [300] may comprise any such numbers of said
units, as required to implement the features of the present disclosure.
[0062] In an implementation, the system [300] may be present in a user device/ user
equipment [102] to implement the features of the present disclosure. The system [300] may
25 be a part of the user device [102]/ or may be independent of, but in communication, with the
user device [102] (may also referred herein as a UE). In another implementation, the system [300] may reside in a server or a network entity. In yet another implementation, the system [300] may reside partly in the server/ network entity and partly in the user device. In an implementation, the system [300] is connected with a gateway control plane function [310].
30 In another implementation, the system [300] resides in the gateway control plane function
[310]. The gateway control plane function [310] is configured to manage control plane operations for providing connectivity to the data network. The gateway control plane function
15

[310] connects with a Mobility Management Function (MMF), the Policy Control Function (PCF) [122], and a Charging Function.
[0063] The system [300] is configured to manage data sessions in the wireless
5 communication network, with the help of the interconnection between the components/units
of the system [300].
[0064] 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
10 interchangeably. While specific embodiments may disclose a 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
15 intended functionality described herein, are considered to be encompassed within the scope
of the present disclosure.
[0065] The system [300] comprises the transceiver unit [302]. The transceiver unit [302]
is configured to receive, at the gateway control plane function [310], a first request from a
20 user equipment (UE) [102] via a network function (NF) for deletion of a first data session. In
particular, one or more network resources are allocated to the first data session. For example, the UE [102] transmits the first request to the network function (NF). The NF further transmits the first request to the transceiver unit [302]. From the transceiver unit [302], the first request is transmitted to the gateway control plane function [310].
25
[0066] In an implementation, the data session may refer to a connection between the UE
[102] and the network. In particular, the data session is an end-to-end communication path which may include an IP address, one or more Quality of Service (QoS) parameters, and other session-related attributes. Further, each data session is uniquely identified and may carry
30 different types of data traffic (such as internet browsing, voice, video, etc.). Herein, the first
data session is referred to an ongoing data session at the UE [102].
[0067] Further, the gateway control plane function [310] may manage signalling and
control operations that are necessary for establishing and maintaining connections between
16

different network entities. The gateway control plane function [310] mentioned herein is utilized to facilitate establishment, maintenance, and termination of data sessions between the UE [102] and the network. The gateway control plane function [310] may handle signalling procedures, mobility management, policy enforcement, and quality of service (QoS) control. 5
[0068] In one implementation, the transceiver unit [302], at the gateway control plane
function [310], is configured to receive the first request for deletion of the first data session. The first request herein may include at least one of: a session identifier (ID) (i.e., a unique identifier for the first data session that is requested to be deleted), a cause value (may refer to
10 a code or value indicating the reason for the request (e.g., user-triggered termination, network-
initiated release, handover, etc.), and an information associated with the UE [102] (e.g., IP address, QoS parameters, etc.). The first request may also include a time parameter indicating a time stamp of creation of the first data session and a time stamp at which the deletion of the first data session is requested.
15
[0069] Further, the system [300] comprises the deferring unit [304] connected at least to
the transceiver unit [302]. Further, the deferring unit [304] herein is configured to defer, at the gateway control plane function [310], an execution of the first request for a pre-defined time duration.
20
[0070] The deferring unit [304] is configured to defer, at the gateway control plane
function [310], the execution of the first request for the pre-defined time duration. In an implementation, the pre-defined time duration may correspond to a predefined period for which the gateway control plane function [310] postpones the deletion of the first data session
25 after receiving the first request. In some examples, the pre-defined time duration is a fix time
interval such as 5 seconds, 30 seconds, 2 minutes, and the like. In another implementation, the pre-defined time duration may be determined based on current load of network, type of data session, or any other operational conditions of the network.
30 [0071] The system [300] also comprises the determination unit [306]. The determination
unit [306] is connected at least to the deferring unit [304]. The determination unit [306] is configured to determine, at the gateway control plane function [310], during the pre-defined time duration, whether a second request for establishment of a second data session is received.
17

[0072] Herein, the second data session may refer to a data session that the user may wish
to access on the UE [102]. It is to be noted that the second data session may or may not be associated with the first data session.
5 [0073] In particular, during the pre-defined time duration, the determination unit [306] is
configured to monitor whether any new request for establishment of the second data session
is received at the transceiver unit [302]. The second data session is similar to the first data
session. When the second request for the second data session is received, the determination
unit [306] is configured to perform one or more security checks. The one or more security
10 checks include verifying the IP address, verifying one or more Quality of Service (QoS)
parameters, and checking other session-related attributes of the second data session. The one or more security checks may assist the determination unit [306] to verify that the second data session is associated with the first data session.
15 [0074] The system [300] also comprises the implementation unit [308]. The
implementation unit [308] is connected at least to the determination unit [306]. In case the second request is received within the pre-defined time duration, the implementation unit [308] is configured to re-utilize, at the gateway control plane function [310], the one or more network resources already allocated to the first data session for establishing the second data
20 session.
[0075] In particular, the implementation unit [308] is configured to re-utilize the one or
more network resources allocated to the first data session to establish the second data session.
In some examples, the one or more network resources include, but may not be limited to, the
25 IP address, QoS Parameters, and other data session related information.
[0076] In one implementation, an internet protocol (IP) address path of the second data
session is same as that of an IP address path of the first data session. The IP address path
herein may refer to the routing path established through the network for the transmission of
30 IP packets between the UE [102] and the network. The IP address path may include one or
more network elements, such as gateways, routers, and switches, that may forward packets based on the IP address of the UE [102].
18

[0077] In case the network uses a static IP allocation, the IP address for the UE [102]
remains the same. In case the network uses a dynamic IP allocation, the IP address for the UE
[102] is updated when the second data session is created. In an implementation, the
implementation unit [308] is configured to ensure that the IP address path is maintained to
5 ensure continuity of service between the first data session and the second data session.
[0078] In an implementation, the implementation unit [308] is configured to defer, at the
gateway control plane function [310], the execution of the first request (i.e., data session
deletion request). Simultaneously, post establishment of the second data session with the one
10 or more resources, the implementation unit [308] is configured to defer the deletion of the
first data session request, to prevent the one or more network resources from being cleared while the second request for the second data session is being processed.
[0079] In one implementation, the implementation unit [308] is configured to map, at the
15 gateway control plane function [310], a user identifier (user ID) in the second data session
request received from the UE [102] with a user ID in the first data session available locally at
the gateway control plane function [310]. Herein, in an event the second request is received
within the pre-defined time interval, the implementation unit [308] matches the user ID in the
second request to the user ID that was already available with the first data session. In case,
20 the user ID in the second request matched with the user ID available in the first data session,
then instead of recognizing the second data session as a different session, the implementation
unit [308] may understand that the second data session and the first data session are same.
Therefore, in such event, the implementation unit [308] may re-utilize the one or more
network resources already allocated to the first data session to establish the second data
25 session, allowing the data session to continue without requiring allocating new one or more
resources to the second data session.
[0080] In case the wireless communication network is a fifth generation (5G)
communication network, then, the first and second data session is a Protocol Data Unit (PDU)
30 session, the network function (NF) is Access and Mobility Management Function (AMF)
[106], and the gateway control plane function [310] is the Session Management Function (SMF) [108]. The PDU session mentioned herein is a data session preferably used in 5G communication networks and may facilitate an exchange of internet protocol (IP) packets between the UE [102] and the network. Further, the SMF [108] is a 5G core network function
19

responsible for managing session-related aspects, such as establishing, modifying, and releasing data sessions. The SMF [108] coordinates with User Plane Function (UPF) for data forwarding and handles IP address allocation and QoS enforcement.
5 [0081] In case the wireless communication network is a fourth generation (4G)
communication network, then, the first and second data session is a Packet Data Network (PDN) session, the network function (NF) is Mobility Management Entity (MME), and the gateway control plane function [310] is a Packet Gateway Control Plane (PGW-C). The PDN session mentioned herein is a data session preferably used in 4G LTE core network for
10 facilitating the exchange of IP packets between the UE [102] and the network. The PGW-C
herein represents a 4G LTE core network function that is responsible for managing the establishment, modification, and release of data sessions between the UE [102] and the network. It is to be noted that the PGW-C is primarily associated with the 4G LTE core network but may also be applied to the 5G network architectures in a non-standalone (NSA)
15 deployment (a deployment of 4G LTE with 5G RAN).
[0082] The PGW-C may further handle IP address allocation and may also interact with
other network functions, such as policy and charging rules function (PCRF) and online
charging system (OCS). In an implementation, the PGW-C may further interact with the
20 serving gateway control function (SGW-C) and mobility management entity (MME) to
manage data traffic and mobility across the network.
[0083] In one implementation, the SMF [108] may support default bearer deletion
procedures for the UE [102] attached through evolved-UMTS terrestrial radio access network
25 (E-UTRAN), involving the MME and S-GW. Herein, the bearer refers to a specific data path
or channel established in the network for transmitting user data packets between the UE [102]
and the PGW.
[0084] When the UE [102] is attached to the E-UTRAN, the SMF [108] may support one
30 or more detach procedures. The one or more detach procedures may include SMF-initiated
detach procedure, UPF-initiated detach procedure, PCRF-initiated detach procedure, UE-initiated detach procedure, RADIUS-initiated detach procedure, and the like.
20

[0085] In one example, to defer the execution of the deletion/ disconnect request for a data
session, an exemplary configuration may be used in the SMF [108] to postpone the deletion/ disconnect of the data session after receiving a session report with error indication (ERR). The exemplary configuration can be represented as:
config
profile access access err delay delay_interval exit
[0086] Herein, the term ‘config’ indicates the start of a configuration mode in a network
function, where specific parameters are to be set. Further, ‘profile access access’ indicates configuring of a profile related to access management. Furthermore, in ‘err delay delay_interval’ the err stands for error indication report, which is a notification sent to indicate that an error has occurred in the context of the data session. Moreover, the delay_interval may represent a time interval for which the deletion or disconnect request will be postponed.
[0087] It is noted that the configuration presented herein is just exemplary and any similar
configuration known to a person skilled in the art, can be utilized in the SMF [108] for deletion/ disconnect of the data session.
[0088] Herein, the pre-defined time duration is preferably mentioned in milliseconds and
may have a range in between 0-3000 (such as 100 milliseconds).
[0089] In an absence of receipt of the second request within the pre-defined time duration,
the implementation unit [308] is configured to delete, at the gateway control plane function [310], the first data session after expiration of the pre-defined time duration. In particular, if no second request is received at the transceiver unit [302] within the pre-defined time duration, the gateway control plane function [310] is then configured to delete the first data session in order to free up the one or more network resources that were allocated to the first data session.

[0090] Referring to FIG. 4, an exemplary method flow diagram [400] for managing data
sessions in the wireless communication network, in accordance with exemplary implementations of the present disclosure is shown. In an implementation, the method [400] is performed by the system [300]. In an implementation, the system [300] may be present in a server device to implement the features of the present disclosure.
[0091] The method [400] initiates at step [402].
[0092] At step [404], the method [400] comprises receiving, by the transceiver unit [302],
at the gateway control plane function [310], the first request from the user equipment (UE) [102] via the network function (NF) for deletion of the first data session. In addition, one or more network resources are allocated to the first data session.
[0093] At step [406], the method [400] comprises deferring, by the deferring unit [304], at
the gateway control plane function [310], the execution of the first request for the pre-defined time duration.
[0094] At step [408], the method [400] comprises determining, by the determination unit
[306], at the gateway control plane function [310], whether the second request for establishment of the second data session is received during the pre-defined time duration.
[0095] In case the second request is received within the pre-defined time duration, at step
[410], the method [400] comprises re-utilizing, by the implementation unit [308] at the gateway control plane function [310], the one or more network resources already allocated to the first data session for establishing the second data session. In addition, an internet protocol (IP) address path of the second data session is same as that of an IP address path of the first data session.
[0096] At step [412], the method [400] comprises mapping, by the implementation unit
[308] at the gateway control plane function [310], a user identifier (user ID) in the second request received from the UE [102] with a user identifier (user ID) in the first data session available locally at the gateway control plane function [310].

[0097] In an implementation, in case the wireless communication network is a fifth
generation (5G) communication network, then, the first and second data session is a Protocol Data Unit (PDU) session, the network function (NF) is Access and Mobility Management Function (AMF) [106], and the gateway control plane function [310] is a Session Management Function (SMF).
[0098] In another implementation, in case the wireless communication network is a fourth
generation (4G) communication network, then, the first and second data session is a Packet Data Network (PDN) session, the network function (NF) is Mobility Management Entity (MME), and the gateway control plane function [310] is a Packet Gateway Control Plane (PGW-C).
[0099] In an absence of receipt of the second request within the pre-defined time duration,
the method [400] comprises deleting, by the implementation unit [308] at the gateway control plane function [310], the first data session after expiration of the pre-defined time duration.
[0100] The method [400] terminates at step [414].
[0101] As is evident from the above, the present disclosure provides a technically
advanced solution for managing data sessions in a wireless communication network. The present disclosure provides a solution to prevent any unnecessary session termination so that application(s) in UE works smoothly. In addition, the present disclosure provides the solution to reduce the network TPS. Also, the present disclosure provides the solution to reduce an impact of malicious UE in core network, which may further avoid any delays or disruptions while running the application(s) in UE.
[0102] While considerable emphasis has been placed herein on the disclosed
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 and non-limiting.

I/We Claim:
1. A method [400] for managing data sessions in a wireless communication network, the
method [400] comprising:
- receiving, by a transceiver unit [302] at a gateway control plane function [310], a first request from a user equipment (UE) [102] via a network function (NF) for deletion of a first data session, wherein one or more network resources are allocated to the first data session;
- deferring, by a deferring unit [304] at the gateway control plane function [310], an execution of the first request for a pre-defined time duration;
- determining, by a determination unit [306] at the gateway control plane function [310], whether a second request for establishment of a second data session is received during the pre-defined time duration; and
- in case the second request is received within the pre-defined time duration, re-utilizing, by an implementation unit [308] at the gateway control plane function [310], the one or more network resources already allocated to the first data session for establishing the second data session.

2. The method [400] as claimed in claim 1, wherein an internet protocol (IP) address path of the second data session is same as that of an IP address path of the first data session.
3. The method [400] as claimed in claim 1, comprising mapping, by the implementation unit [308] at the gateway control plane function [310], a user identifier (user ID) in the second request received from the UE [102] with a user identifier (user ID) in the first data session available locally at the gateway control plane function [310].
4. The method [400] as claimed in claim 1, wherein in case the wireless communication network is a fifth generation (5G) communication network, then, the first and second data session is a Protocol Data Unit (PDU) session, the network function (NF) is Access and Mobility Management Function (AMF) [106], and the gateway control plane function [310] is a Session Management Function (SMF).

5. The method [400] as claimed in claim 1, wherein in case the wireless communication network is a fourth generation (4G) communication network, then, the first and second data session is a Packet Data Network (PDN) session, the network function (NF) is Mobility Management Entity (MME), and the gateway control plane function [310] is a Packet Gateway Control Plane (PGW-C).
6. The method [400] as claimed in claim 1, wherein, in an absence of receipt of the second request within the pre-defined time duration, the method [400] comprises deleting, by the implementation unit [308] at the gateway control plane function [310], the first data session after expiration of the pre-defined time duration.
7. A system [300] for managing sessions in a wireless communication network, the system [300] comprising:

- a transceiver unit [302] configured to receive, at a gateway control plane function [310], a first request from a user equipment (UE) [102] via a network function (NF) for deletion of a first data session, wherein one or more network resources are allocated to the first data session;
- a deferring unit [304] connected at least to the transceiver unit [302], the deferring unit [304] configured to defer, at the gateway control plane function [310], an execution of the first request for a pre-defined time duration;
- a determination unit [306] connected at least to the deferring unit [304], the determination unit [306] configured to determine, at the gateway control plane function [310], whether a second request for establishment of a second data session is received during the pre-defined time duration; and
- an implementation unit [308] connected at least to the determination unit [306], wherein in case the second request is received within the pre-defined time duration, the implementation unit [308] is configured to re-utilize, at the gateway control plane function [310], the one or more network resources already allocated to the first data session for establishing the second data session.
8. The system [300] as claimed in claim 7, wherein an internet protocol (IP) address path of the second data session is same as that of an IP address path of the first data session.

9. The system [300] as claimed in claim 7, wherein the implementation unit [308] is configured to map, at the gateway control plane function [310], a user identifier (user ID) in the second request received from the UE [102] with a user ID in the first data session available locally at the gateway control plane function [310].
10. The system [300] as claimed in claim 7, wherein in case the wireless communication network is a fifth generation (5G) communication network, then, the first and second data session is a Protocol Data Unit (PDU) session, the network function (NF) is Access and Mobility Management Function (AMF) [106], and the gateway control plane function [310] is a Session Management Function (SMF).
11. The system [300] as claimed in claim 7, wherein in case the wireless communication network is a fourth generation (4G) communication network, then, the first and second data session is a Packet Data Network (PDN) session, the network function (NF) is Mobility Management Entity (MME), and the gateway control plane function [310] is a Packet Gateway Control Plane (PGW-C).
12. The system [300] as claimed in claim 7, wherein, in an absence of receipt of the second request within the pre-defined time duration, the implementation unit [308] is configured to delete, at the gateway control plane function [310], the first data session after expiration of the pre-defined time duration.