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 MULTIMEDIA PRIORITY SERVICE 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 MULTIMEDIA PRIORITY SERVICE IN A
COMMUNICATION NETWORK
TECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to wireless communication
systems. More particularly, embodiments of the present disclosure relate to providing multimedia priority service in a 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. Further, reducing call drops and latency is of paramount importance in the telecommunications industry. Call drops can be frustrating for users, and they can also result in lost revenue for service providers. Latency, on the other hand, refers to the time it takes for data to travel from one device to another and can cause delays and disruptions in communication. The introduction of 5G technology promises to address these issues by delivering ultra-low latency and high-speed data transmission. With 5G, call drops are going to be minimized, and users are going to experience seamless, uninterrupted communication. Additionally, 5G technology may enable the development of new applications and services that require high-speed, low-latency communication, such as remote surgeries, autonomous vehicles, and virtual reality. The reduction of call drops, and latency is crucial in ensuring that users
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have access to reliable and efficient communication services, and the 5G technology is a significant step towards achieving this goal. Further, the 6th generation communication network aims to use intelligent knowledge systems like Artificial Intelligence for high speed and low latency networks for future.
[0004] In the 5G communication system, a number of network functional (NF) modules are
provided, for example an Access and Mobility Management Function (AMF), a Session Management Function (SMF), a Policy Control Function (PCF), a Unified Data Manager Function UDM), a Network Slice Selection Function (NSSF), and/or a Network Repository Function (NRF), etc., one or more of which interact with each other to implement multiple operations of the 5G communication system. In particular, one or more of the aforementioned NFs communicates with each other to provide, implement, modify, track, analyse, or restrict, one or more services provided to a user equipment (UE). For example, a PDU session is common service enabled by communication between one or more of the aforementioned NFs.
[0005] Furthermore, the PCF is a policy control function that defines various policies for
providing various services to a user equipment (UE) in the communication system. For example, for implementing a PDU session of the UE: the SMF may request a policy of the PDU session for the user equipment (UE), from the PCF; the PCF may retrieve subscription data of the user equipment (UE), from the UDM; and then provide a response containing, the policy for the PDU session for the user equipment (UE), to the SMF. Accordingly, it may be said that the PCF plays an important role in determining the policy implemented for enabling various services to the UE. In addition to above, the PCF is also known to store policy for priority sessions, which will be discussed later.
[0006] ‘Barring’ service is a common technique implemented in communication systems.
Under this technique, the PCF is provisioned to revert with a response containing a barring policy, to the SMF, when the user equipment (UE) is positioned within a defined barred tracking area. As may be known to a person skilled in the art, barring policy restricts the SMF from providing certain services to the UE.
[0007] ‘Multimedia Priority Service (MPS)’ refers to a technique implemented in the
communication system. Under this technique, the PCF is provisioned to override the aforementioned barring services. In particular, the PCF provides a response containing the policy for the requested service for the user equipment (UE), to the SMF, even if the UE is positioned within the defined barred tracking area. Conventionally, for such purposes, the PCF receives a Policy control Create/Update Request from SMF for implementing a session to a user equipment. Thereafter, the PCF retrieves subscription data of the UE from the UDM. Then the PCF identifies the UE as one of

a MPS user or non-MPS user based on the subscription data received from the UDM and tracking area identifier (TAI) information received from the SMF. Finally, the PCF provides a barred response, containing a barring policy, in case the UE is identified as non-MPS user, while the PCF provides a MPS response, containing a MPS policy for the requested session of the UE, in case the UE is identified as MPS user. However, there may be situations, when a communication between the PCF and the UDM is lost or effected. In such situations, retrieving subscription data from the UDM fails. Accordingly, the MPS service may not be implemented to the UE.
[0008] Thus, there exists an imperative need in the art to provide a faster, efficient, and reliable
system and method for implementing multimedia priority service to a user equipment (UE) in a 5G communication system, which the present disclosure aims to address.
SUMMARY
[0009] 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.
[0010] An aspect of the present disclosure may relate to a method for providing multimedia
priority service in a communication network. The method includes receiving, by a Policy Control Function unit, a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value. The method further includes identifying, by the PCF unit, whether a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request. Furthermore, the method encompasses configuring, by the PCF, a set of SM policies based on the identification. For the MPS UE, no barring set of rules are applied when the UE is in a barring area, and for the non-MPS UE, barring rules are applied. Further the method includes detecting, by a session management function (SMF) unit, a change in a subscription Quality of Service (QoS). The method further encompasses transmitting, by the SMF unit, a policy control update request to the PCF unit indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value. Further, the method includes modifying, by the PCF, the UE's MPS status based on the updated ARP value received.
[0011] In an exemplary aspect of the present disclosure, the SM policy update request is a
create request initiated by the SMF unit.

[0012] In an exemplary aspect of the present disclosure, the policy control update request
comprises a policy control event trigger related to a QoS change.
[0013] In an exemplary aspect of the present disclosure, the PCF modifies the UEs MPS from
one of non-MPS to MPS or MPS to non-MPS based on the updated ARP value.
[0014] Another aspect of the present disclosure may relate to a system for providing
multimedia priority service in a communication network. The system includes a Policy Control Function (PCF) unit configured to receive a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value. The PCF unit is further configured to identify whether a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request. Furthermore, the PCF unit configures a set of SM policies based on the identification. For the MPS UE, no barring set of rules are applied when the UE is in a barring area, and for the non-MPS UE, barring rules are applied. The system further includes a session management function (SMF) unit configured to detect a change in a subscription Quality of Service (QoS). The SMF unit is further configured to transmit a policy control update request to the PCF unit indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value. The PCF unit is further configured to modify the UE's MPS based on the updated ARP value received.
[0015] Yet another aspect of the present disclosure may relate to a non-transitory computer
readable storage medium storing instructions for providing multimedia priority service in a communication network, the instructions include executable code which, when executed by a one or more units of a system, causes a Policy Control Function (PCF) unit of the system to receive a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value; identify whether a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request; and configure a set of SM policies based on the identification. The instructions further include executable code which, when executed by a one or more units of a system, causes a Session Management Function (SMF) unit of the system to identify detect a change in a subscription Quality of Service (QoS); and transmit a policy control update request to the PCF unit indicating the change in the subscription QoS based on the identification. The policy control update request comprises an updated ARP value. Further, the instructions include executable code which, when executed by a one or more units of a system, causes the PCF unit of the system to modify the UE's MPS based on the updated ARP value received.
[0016] Yet another aspect of the present disclosure may relate to a User Equipment (UE) for
providing multimedia priority service in a communication network. The UE may include a

processor configured to facilitate modification of a UE’s MPS status. The modification of the UE’s MPS status is based on receiving, by a Policy Control Function unit, a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value. Further, the modification of the UE’s MPS status is based on identifying, by the PCF unit, whether the UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request. Then, the modification of the UE’s MPS status is based on configuring, by the PCF unit, a set of SM policies based on the identification, wherein for the MPS UE, no barring set of rules are applied when the UE is in a barring area, and wherein for the non-MPS UE, barring rules are applied. Also, the modification of the UE’s MPS status is based on detecting, by a session management function (SMF) unit, a change in a subscription Quality of Service (QoS), transmitting, by the SMF unit, a policy control update request to the PCF unit indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value, and modifying, by the PCF unit, the UE's MPS status based on the updated ARP value received
OBJECTS OF THE INVENTION
[0017] Some of the objects of the present disclosure, which at least one embodiment disclosed
herein satisfies are listed herein below.
[0018] It is an object of the present disclosure to provide a system and a method for faster,
efficient, and reliable system and method for implementing multimedia priority service (MPS) to a user equipment (UE) in a 5G communication system, without communicating with a Unified Data Management (UDM) function in the 5G communication system.
[0019] It is another object of the present invention to provide an easy way to implement MPS
service in the network.
[0020] It is another object of the present invention is to reduce signalling in the communication
network.
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
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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.
[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 providing multimedia
priority service in a communication network, in accordance with exemplary implementations of the present disclosure.
[0025] FIG. 4 illustrates a method flow diagram for providing multimedia priority service in a
communication network in accordance with exemplary implementations of the present disclosure.
[0026] FIG. 5 illustrates an exemplary system diagram [500] indicating the system for
implementing Multimedia Priority Service (MPS) to a user equipment (UE) in a 5G communication system between SMF [108] and PCF [122], in accordance with exemplary embodiments of the present disclosure.
[0027] FIG. 6 illustrates an exemplary message flow diagram [600] indicating the process for
implementing Multimedia Priority Service (MPS) to a user equipment (UE) in a 5G communication system between SMF [108] and PCF [122], in accordance with exemplary embodiments of the present disclosure.
[0028] The foregoing shall be more apparent from the following more detailed description of
the disclosure.
DETAILED DESCRIPTION
[0029] 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.
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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.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] 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.
8

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
5 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.
[0035] As used herein, “a user equipment”, “a user device”, “a smart-user-device”, “a smart-
10 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
15 computer, wearable device or any other computing device which is capable of implementing at least
some 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.
20
[0036] 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 storage media,
25 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.
[0037] As used herein “interface” or “user interface refers to a shared boundary across which
30 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.
35 [0038] 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
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microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASIC), Field Programmable Gate Array circuits (FPGA), any other type of integrated circuits, etc.
5 [0039] 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 the system.
[0040] As discussed in the background section, the current known solutions have several
10 shortcomings. The present disclosure aims to overcome the above-mentioned and other existing
problems in this field of technology by providing method and system of providing multimedia priority service in a communication network.
[0041] FIG. 1 illustrates an exemplary block diagram representation of 5th generation core
15 (5GC) network architecture [100], in accordance with exemplary 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 Authentication and
20 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
components are assumed to be connected to each other in a manner as obvious to the person skilled
25 in the art for implementing features of the present disclosure.
[0042] The 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
30 technologies that enable wireless communication.
[0043] The 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. 35
[0044] The Session Management Function (SMF) [108] is a 5G core network function
responsible for managing session-related aspects, such as establishing, modifying, and releasing
10

sessions. It coordinates with the User Plane Function (UPF) for data forwarding and handles IP address allocation and QoS enforcement.
[0045] The Service Communication Proxy (SCP) [110] is a network function in the 5G core
5 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.
[0046] The 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
10 and verifies authentication vectors and tokens.
[0047] 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 UEs can access only the slices for which they are authorized. 15
[0048] The Network Slice Selection Function (NSSF) [116] is a network function responsible
for selecting the appropriate network slice for a UE based on factors such as subscription, requested services, and network policies.
20 [0049] The Network Exposure Function (NEF) [118] is a network function that exposes
capabilities and services of the 5G network to external applications, enabling integration with third-party services and applications.
[0050] The Network Repository Function (NRF) [120] is a network function that acts as a
25 central repository for information about available network functions and services. It facilitates the
discovery and dynamic registration of network functions.
[0051] 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
30 network policies.
[0052] The Unified Data Management (UDM) [124] is a network function that centralizes the
management of subscriber data, including authentication, authorization, and subscription information. 35
[0053] 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.
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[0054] The User Plane Function (UPF) [128] is a network function responsible for handling
user data traffic, including packet routing, forwarding, and QoS enforcement.
5 [0055] The 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.
[0056] FIG. 2 illustrates an exemplary block diagram of a computing device [1000] upon
10 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 [1000] may
also implement a method for providing multimedia priority service in a communication network
utilising the system. In another implementation, the computing device [1000] itself implements the
method for providing multimedia priority service in a communication network using one or more
15 units configured within the computing device [1000], wherein said one or more units are capable of
implementing the features as disclosed in the present disclosure.
[0057] The computing device [1000] may include a bus [1002] or other communication
mechanism for communicating information, and a hardware processor [1004] coupled with bus
20 [1002] for processing information. The hardware processor [1004] may be, for example, a general-
purpose microprocessor. The computing device [1000] may also include a main memory [1006], such as a random-access memory (RAM), or other dynamic storage device, coupled to the bus [1002] for storing information and instructions to be executed by the processor [1004]. The main memory [1006] also may be used for storing temporary variables or other intermediate information during
25 execution of the instructions to be executed by the processor [1004]. Such instructions, when stored
in non-transitory storage media accessible to the processor [1004], render the computing device [1000] into a special-purpose machine that is customized to perform the operations specified in the instructions. The computing device [1000] further includes a read only memory (ROM) [1008] or other static storage device coupled to the bus [1002] for storing static information and instructions
30 for the processor [1004].
[0058] A storage device [1010], such as a magnetic disk, optical disk, or solid-state drive is
provided and coupled to the bus [1002] for storing information and instructions. The computing
device [1000] may be coupled via the bus [1002] to a display [1012], such as a cathode ray tube
35 (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 [1014], including alphanumeric and other keys, touch screen input means, etc. may be coupled to the bus [1002] for
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communicating information and command selections to the processor [1004]. Another type of user
input device may be a cursor controller [1016], such as a mouse, a trackball, or cursor direction keys,
for communicating direction information and command selections to the processor [1004], and for
controlling cursor movement on the display [1012]. The input device typically has two degrees of
5 freedom in two axes, a first axis (e.g., x) and a second axis (e.g., y), that allow the device to specify
positions in a plane.
[0059] The computing device [1000] may implement the techniques described herein using
customized hard-wired logic, one or more ASICs or FPGAs, firmware, and/or program logic which
10 in combination with the computing device [1000] causes or programs the computing device [1000]
to be a special-purpose machine. According to one implementation, the techniques herein are performed by the computing device [1000] in response to the processor [1004] executing one or more sequences of one or more instructions contained in the main memory [1006]. Such instructions may be read into the main memory [1006] from another storage medium, such as the storage device
15 [1010]. Execution of the sequences of instructions contained in the main memory [1006] causes the
processor [1004] 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.
20 [0060] The computing device [1000] also may include a communication interface [1018]
coupled to the bus [1002]. The communication interface [1018] provides a two-way data communication coupling to a network link [1020] that is connected to a local network [1022]. For example, the communication interface [1018] may be an integrated services digital network (ISDN) card, cable modem, satellite modem, or a modem to provide a data communication connection to a
25 corresponding type of telephone line. As another example, the communication interface [1018] 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 [1018] sends and receives electrical, electromagnetic, or optical signals that carry digital data streams representing various types of information.
30
[0061] The computing device [1000] can send messages and receive data, including program
code, through the network(s), the network link [1020] and the communication interface [1018]. In the Internet example, a server [1030] might transmit a requested code for an application program through the Internet [1028], the ISP [1026], the local network [1022] and the communication
35 interface [1018]. The received code may be executed by the processor [1004] as it is received, and/or
stored in the storage device [1010], or other non-volatile storage for later execution.
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[0062] Referring to FIG. 3, an exemplary block diagram of a system [300] for providing
multimedia priority service in a communication network, is shown, in accordance with the
exemplary implementations of the present disclosure. The system [300] comprises at least one
Session Management Function unit [108] and at least one Policy Control Function unit [122]. Also,
5 all of the components/ units of the system [300] are assumed to be connected to each other unless
otherwise indicated below. As shown in the figures all units shown within the system 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 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. Further, in an
10 implementation, the system [300] may be present in a user device to implement the features of the
present disclosure. The system [300] may be a part of the user device / or may be independent of but in communication with the user device (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
15 user device.
[0063] The system [300] is configured for providing multimedia priority service in a
communication network, with the help of the interconnection between the components/units of the system [300].
20
[0064] The system [300] includes a Policy Control Function (PCF) unit [122]. The PCF unit
[122] is configured to receive a session management (SM) policy update request. The SM policy update request comprises an allocation and retention priority (ARP) value. The SM policy update request is a create request initiated by the SMF unit [108]. The Session Management Function (SMF)
25 unit [108] is a 5G core network function responsible for managing session-related aspects, such as
establishing, modifying, and releasing sessions. It coordinates with a User Plane Function (UPF) [128], as shown in FIG. 1, for data forwarding and handles IP address allocation and QoS enforcement. The SMF unit [108] may initiate the SM policy update request based on a change in Quality of service (QoS), a change in traffic on network, and the like. The allocation and retention
30 priority (ARP) value relates to information about the priority level, the pre-emption capability and
vulnerability. The ARP priority level defines the relative importance of a resource request to allow for deciding whether to select or reject a new QoS Flow based on resource limitations.
[0065] The PCF [122] is further configured to identify whether a UE is one of a Multimedia
35 Priority Service (MPS) UE or non-MPS UE based on the ARP value in the SM policy update request.
An MPS user refers to a UE having an MPS subscription, whereas a non-MPS user refers to a UE
not having an MPS subscription. MPS refers to Multimedia Priority service which provides priority
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to increase the probability of an authorized Service User's communication request to be successful.
Priority may be applied to the MPS invocation and session establishment and may continue to be
applied until the MPS session is released. The priority may be applied before invocation if a greater
probability of success in receiving, recognizing, and processing the invocation is needed. When the
5 PCF unit [122] receives the SM policy update request, it contains the ARP value. For example, if
the ARP value is between 1 and 8, it may be considered as high priority and the PCF unit [122] may identify the UE as MPS. However, when the ARP value is more than 8, it may be considered as low priority and the PCF unit [122] may identify the UE as non-MPS. The PCF unit [122] may further configure a set of SM policies based on the identification. The set of SM policies may be configured
10 by the PCF unit [122] through a command line interface or a user interface. In an embodiment, the
set of SM policies may comprise one or more policies based on the SM policy update request. For instance, if the SM policy update request is for a user in a specific geographical region, the set of SM policies may be configured in Public Land Mobile Network (PLMN). For the MPS UE, no barring set of rules are applied when the UE is in a barring area, and for the non-MPS UE, barring
15 rules are applied. The barring area refers to a specific area in a network where the network may be
barred/restricted. Barring set of rules refers to a process of restricting access of the UE to the communication network. The barring set of rules may be used to manage network traffic efficiently. The barring set of rules may be used to restrict call, service, or Quality of Service (QoS). The PCF unit [122] may be provisioned to revert with a response, containing a barring policy, to the SMF unit
20 [108], when the user equipment (UE) is within a defined barred tracking area.
[0066] The PCF unit [122] is a key part of 5G Core Network. The PCF unit [122] handles the
unified policy framework that manages network behaviour by providing policy rules for control plane functions (for example, network slicing, roaming and mobility management) and subscription
25 information for policy decisions taken, and by supporting new 5G quality of service (QoS) policy
and charging control functions. The policy decisions in a 5th Generation core network are made based on the MPS subscription information. The policy decisions refer to rules determined by the PCF unit [122] to manage network resources. These decisions are based on factors, including but may not be limited to, user subscription information, current network conditions, and service
30 requirements.
[0067] In an implementation of the present disclosure, in the 5th generation core network, the
SMF unit [108] and PCF unit [104] communicate over N7 interface. The PCF unit [122] may receive
a session management policy update request when there is a need to modify an existing session or
35 when it is initiated by the SMF unit [108]. The need to modify existing session may be due to change
in type of service, Quality of Service (QoS) requirements, or the like. The SM Policy update request may include an ARP value. The ARP value may be present in the SM policy control update message.
15

However, in case the ARP value is not present in the SM policy control update message, the PCF
unit [122] while analysing, may still check for the ARP value in the existing session. The ARP value
may contain the level of priority of the request (high or low), or pre-emption capability value. Pre¬
emption capability is the information on whether a UE can get resources that were already assigned
5 to another UE with a lower priority level. Further, the PCF unit [122] may identify non-MPS or MPS
users by ARP value in the Create Request message from SMF unit [108].
[0068] Once the PCF unit [122] identifies the MPS user and non-MPS user, the PCF unit [122]
may not install barring rules for MPS users when user moves in the barring area. Whereas, barring
10 rules may be applied for non-MPS users. This is configurable on PCF application via policy engine.
[0069] The system [300] further includes a session management function (SMF) unit [108]
configured to detect a change in a subscription Quality of Service (QoS). The SMF unit [108] is further configured to transmit a policy control update request to the PCF unit [122] indicating the
15 change in the subscription QoS based on the identification, the policy control update request
comprising an updated ARP value. The policy control update request comprises a policy control event trigger related to a QoS change. The QoS change in the 5th Generation core network refers to a change in performance characteristics of a network service, which includes but may not be limited to latency, bandwidth, jitter, and reliability. The change in the performance characteristics is
20 performed by the PCF unit [122] to adjust according to the specific requirements of the network or
users.
[0070] The Session Management Function (SMF) unit [108] is one of the key parts of 5G Core
Network. The SMF unit [108] collects all the information related to PDU session management from
25 various network components (for example, UPF, PCF, UDM) and controls/orchestrates those
network components based on request from AMF. The SMF unit [108] is primarily responsible for interacting with decoupled data plane, creating, updating, and removing Protocol Data Unit (PDU) sessions and managing session context with the User Plane Function (UPF). The decoupled data plane refers to a scenario where the 5th Generation core network separates control plane and data
30 plane for flexibility and efficiency.
[0071] In an implementation of the present disclosure, in the 5th generation Core Network,
when the SMF unit [108] detects a change in the default QoS and prioritizes a more important
network traffic to pass first, SMF unit [108] may notify the PCF unit [122] by sending a different
35 ARP value in SM policy control update request with policy control event trigger. The SMF unit
[108] may detect the change in the default QoS during a session update or through a notification from the UDM or the UDR. The SMF unit [108] may query the UDM or the UDR to obtain an
16

update in the default QoS. The notification from the UDR or the UDM may include information
about change in the default QoS. In an embodiment, the policy control event trigger may be due to
change in UE status. The UE status may include the UE going in active state from idle state or idle
state to active state. In another embodiment, the policy control event trigger may be due to change
5 in network traffic or change in bandwidth of network.
[0072] The PCF unit [122] may evaluate the ARP value in the update in the default QoS
against the MPS or non-MPS state of the UE in the network. The PCF unit [122] may determine if
any changes need to be made to the MPS or non-MPS state of the UE. For example, if the ARP value
10 is between 1 and 8, it may be considered high priority and the PCF unit [122] may identify the UE
as MPS. When the ARP value is more than 8, it may be considered as low priority and the PCF unit [122] may identify the UE as non-MPS.The PCF unit [122] may change the user from MPS to non-MPS or from non-MPS to MPS in the session according to the priority level.
15 [0073] The PCF unit [122] is further configured to modify the UE's MPS based on the updated
ARP value received. The PCF unit [122] modifies the UEs MPS from one of non-MPS to MPS or from MPS to non-MPS based on the updated ARP value.
[0074] In an implementation of the present disclosure, in the 5th generation core network, once
20 the PCF unit [122] receives the change in the QoS, the PCF unit [122] may modify the UE’s MPS
based on change in the QoS. The PCF unit [122] can create, modify, maintain and release MPS user sessions.
[0075] Referring to FIG. 4, an exemplary method flow diagram [400] for providing
25 multimedia priority service in a 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]. Further, in an implementation, the system [300] may be present in a server device to implement the features of the present disclosure. Also, as shown in Figure 4, the method [400] starts at step [402]. 30
[0076] At step [402], the method comprises receiving, by the Policy Control Function unit
[122], a session management (SM) policy update request, the SM policy update request comprises
an allocation and retention priority (ARP) value. In an implementation of the present disclosure, the
SMF unit [108] may initiate the SM policy update request based on a change in Quality of service
35 (QoS), a change in traffic on network, and the like.
17

[0077] The PCF unit [122] handles the unified policy framework that manages network
behaviour by providing policy rules for control plane functions (for example, network slicing,
roaming and mobility management) and subscription information for policy decisions taken, and by
supporting new 5G quality of service (QoS) policy and charging control functions. The policy
5 decisions, in a 5th Generation core network are made based on the MPS subscription information.
The policy decisions refer to rules determined by the PCF unit [122] to manage network resources. These decisions are based on factors including but may not be limited to user subscription information, current network conditions, and service requirements.
10 [0078] At step [404], the method further comprises identifying, by the PCF unit [122], whether
a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request. An MPS user refers to a UE having an MPS subscription, whereas a non-MPS user refers to a UE not having an MPS subscription. MPS refers to Multimedia Priority service which provides priority to increase the probability of an authorized Service User's communication request to be successful.
15 Priority may be applied to the MPS invocation and session establishment and may continue to be
applied until the MPS session is released. The priority may be applied before invocation if a greater probability of success in receiving, recognizing, and processing the invocation is needed.
[0079] In an implementation of the present disclosure, identification of a non-MPS user or an
20 MPS user may be performed by the PCF unit [122], by using ARP value in the Create Request
message from SMF unit [108]. An MPS user refers to a UE having an MPS subscription, whereas a
non-MPS user refers to a UE not having an MPS subscription. MPS refers to Multimedia Priority
service which provides priority to increase the probability of an authorized Service User's
communication request to be successful. Priority may be applied to the MPS invocation and session
25 establishment and may continue to be applied until the MPS session is released. The priority may be
applied before invocation if a greater probability of success in receiving, recognizing, and processing
the invocation is needed. When the PCF unit [122] receives the SM policy update request, it contains
the ARP value. If the ARP value is between 1 and 8, it is high priority and the PCF unit [122] may
identify the UE as MPS. When the ARP value is more than 8, it is low priority and the PCF unit
30 [122] may identify the UE as non-MPS.
[0080] Next, at step [406], the method further comprises configuring, by the PCF unit [122],
a set of SM policies based on the identification, wherein for the MPS UE, no barring set of rules are
applied when the UE is in a barring area, and wherein for the non-MPS UE, barring rules are applied.
35 Barring set of rules refers to a process of restricting access of the UE to the communication network.
The barring set of rules may be used to manage network traffic efficiently. The barring set of rules may be used to restrict call, service, or Quality of Service (QoS). The PCF unit [122] may be
18

provisioned to revert with a response, containing a barring policy, to the SMF unit [108], when the
user equipment (UE) is within a defined barred tracking area. The set of SM policies may be
configured by the PCF unit [122] through a command line interface or a user interface. In an
embodiment, the set of SM policies may comprise one or more policies based on the SM policy
5 update request. For instance, if the SM policy update request is for a user in a specific geographical
region, the set of SM policies may be configured in Public Land Mobile Network (PLMN).
[0081] Next at step [408], the method further includes detecting, by a session management
function (SMF) unit [108], a change in a subscription Quality of Service (QoS). The SMF unit [108]
10 may detect the change in the default QoS during a session update or through a notification from the
UDM or the UDR. The SMF unit [108] may query the UDM or the UDR to obtain an update in the default QoS. The notification from the UDR or the UDM may include information about change in the default QoS. In an embodiment, the policy control event trigger maybe due to change in UE status. The UE status may include the UE going in active state from idle state or idle state to active
15 state. In another embodiment, the policy control event trigger may be due to change in network
traffic or change in bandwidth of network.
[0082] In an implementation of the present disclosure, in the 5th generation core network, once
identification of an MPS user and a non-MPS user is done by the PCF unit [122], the PCF unit [122]
20 is configured to not install barring rules for MPS users when user moves in the barring area. Whereas,
barring rules may be applied for non-MPS users by the PCF unit [122]. This is configurable on PCF application via policy engine.
[0083] Further, at step [410] the method comprises transmitting, by the SMF unit [108], a
25 policy control update request to the PCF unit [122] indicating the change in the subscription QoS
based on the identification, the policy control update request comprising an updated ARP value. The
QoS change in the 5th Generation core network refers to a change in performance characteristics of
a network service, which includes but may not be limited to latency, bandwidth, jitter, and reliability.
The change in the performance characteristics is performed by the PCF unit [122] to adjust according
30 to the specific requirements of the network or users.
[0084] In an implementation of the present disclosure, in the 5th generation Core Network,
when a change in the default QoS is detected by the SMF unit [108] to prioritize a more important
network traffic to pass first, the PCF unit [122] may be notified by the SMF unit [108] by sending a
35 different ARP value in SM policy control update request with policy control event trigger. The PCF
unit [122] may change the user from MPS to non-MPS or from non-MPS to MPS in the session according to the priority level.
19

[0085] Further at step [412], the method includes modifying, by the PCF unit [122], the UE's
MPS status based on the updated ARP value received.
5 [0086] In an implementation of the present disclosure, in the 5th generation core network, once
the change in the QoS is received by the PCF unit [122], the PCF unit [122] may modify the UE’s MPS based on change in the QoS. The PCF unit [122] can create, modify, maintain and release MPS user sessions.
10 [0087] The method terminates at step [414].
[0088] Referring to FIG. 5, it illustrates an exemplary system diagram [500] indicating the
system for implementing Multimedia Priority Service (MPS) to a user equipment (UE) in a 5G
communication system between SMF unit [108] and PCF unit [122], in accordance with exemplary
15 embodiments of the present disclosure.
[0089] In an exemplary use case, MPS (Multimedia Priority Service) allows Service Users to
gain priority access to system resources in situations such as during congestion, creating the ability
to deliver or complete sessions of a high priority nature, etc. Service Users may be government-
20 authorized personnel, emergency management officials and/or other authorized users. MPS supports
priority sessions on an "end-to-end" priority basis.” The MPS user may use service access in barring
area since PCF may apply non-barring rule after detecting ARP value and applying rule for user
service session.
25 [0090] The system [500] illustrates the SMF unit [108] and the PCF unit [104] communicates
over N7 interface in the 5th generation Core Network. The PCF unit [122] may receive a session management policy update request when there is a need to modify an existing session or when it is initiated by the SMF unit [108]. The need to modify the existing session may be due to change in type of service, Quality of Service (QoS) requirements, or the like. The SM Policy update request
30 may include an ARP value. The ARP value may be present in the SM policy control update message.
However, in case if the ARP value is not present in the SM policy control update message, the PCF unit [122] while analysing, may still check for the ARP value in the existing session. The ARP value may contain the level of priority of the request (high or low), or pr-emption capability value. Pre¬emption capability is the information on whether a UE can get resources that were already assigned
35 to another UE with a lower priority level. Further, the PCF unit [122] may identify non-MPS or MPS
users by ARP value in the Create Request message from SMF unit [108]. An MPS user refers to a UE having an MPS subscription, whereas a non-MPS user refers to a UE not having an MPS
20

subscription. MPS refers to Multimedia Priority service which provides priority to increase the
probability of an authorized Service User's communication request to be successful. Priority may be
applied to the MPS invocation and session establishment and may continue to be applied until the
MPS session is released. The priority may be applied before invocation if a greater probability of
5 success in receiving, recognizing, and processing the invocation is needed.
[0091] When the SMF unit [108] detects a change in the default QoS and prioritizes a more
important network traffic to pass first, SMF unit [108] may notify the PCF unit [122] by sending a
different ARP value in SM policy control update request with policy control event trigger. The PCF
10 unit [122] may change the user from MPS to non-MPS or from non-MPS to MPS in the session
according to the priority level.
[0092] Once the PCF unit [122] identifies the MPS user and non-MPS user, the PCF unit [122]
may not install barring rules for MPS users when user moves in the barring area. Whereas, barring
15 rules may be applied for non-MPS users. This is configurable on PCF application via policy engine.
[0093] In an implementation of the present disclosure, in the 5th generation Core Network,
when the SMF unit [108] detects a change in the default QoS and prioritizes a more important
network traffic to pass first, SMF unit [108] may notify the PCF unit [122] by sending a different
20 ARP value in SM policy control update request with policy control event trigger. The PCF unit [122]
may change the user from MPS to non-MPS or from non-MPS to MPS in the session according to the priority level.
[0094] Once the PCF unit [122] receives the change in the QoS, the PCF unit [122] may
25 modify the UE’s MPS based on change in the ARP value. The PCF unit [122] can create, modify,
maintain and release MPS user sessions.
[0095] Referring to FIG. 6, it illustrates an exemplary message flow diagram [600] indicating
the process for implementing Multimedia Priority Service (MPS) to a user equipment (UE) in a 5G
30 communication system between SMF unit [108] and PCF unit [122], in accordance with exemplary
embodiments of the present disclosure.
[0096] In an exemplary use case, MPS (Multimedia Priority Service) allows Service Users to
gain priority access to system resources in situations such as during congestion, creating the ability
35 to deliver or complete sessions of a high priority nature, etc. Service Users may be government-
authorized personnel, emergency management officials and/or other authorized users. MPS supports priority sessions on an "end-to-end" priority basis.” The MPS user may use service access in barring
21

area since the PCF unit [122] may apply non-barring rule after detecting ARP value and applying rule for user service session.
[0097] At step 1, the SMF unit [108] sends a Request with an ARP value, for example to the
5 PCF unit [122]. The PCF unit [122] identifies MPS user by ARP value. The PCF unit [122] sends
acknowledgement or policy created response to SMF unit [108].
[0098] At step 2, the PCF unit [122] applies non-barring rules to MPS user, even if the MPS
user may be present in a barring area. The PCF unit [122] then sends this information to SMF unit
10 [108].
[0099] At step 3, the SMF unit [108] sends the Update Request with the ARP value to the PCF
[122]. The PCF unit [122] identifies MPS user by ARP value and determines that MPS user state is changed. For example, MPS user may be determined non-MPS user now. 15
[0100] At step 4, the PCF unit [122] applies barring rules to non-MPS users in barring area
and send this information to SMF unit [108].
[0101] The present disclosure further discloses a non-transitory computer readable storage
20 medium storing instructions for providing multimedia priority service in a communication network,
the instructions include executable code which, when executed by a one or more units of a system,
causes a Policy Control Function (PCF) unit [122] of the system to receive a session management
(SM) policy update request, the SM policy update request comprising an allocation and retention
priority (ARP) value; identify whether a UE is one of an MPS UE or non-MPS UE based on the
25 ARP value in the SM policy update request; and configure a set of SM policies based on the
identification. The instructions further include executable code which, when executed by a one or
more units of a system, causes a Session Management Function (SMF) unit [108] of the system to
identify detect a change in a subscription Quality of Service (QoS); and transmit a policy control
update request to the PCF unit [122] indicating the change in the subscription QoS based on the
30 identification, the policy control update request comprising an updated ARP value. Further, the
instructions include executable code which, when executed by a one or more units of a system, causes the PCF unit [122] of the system to modify the UE's MPS based on the updated ARP value received.
35 [0102] The present disclosure further discloses a User Equipment (UE) [102] for providing
multimedia priority service in a communication network. The UE [102] may include a processor [1004] facilitate modification of a UE’s MPS status. The modification of the UE’s MPS status is
22

based on receiving, by a Policy Control Function unit [122], a session management (SM) policy
update request, the SM policy update request comprising an allocation and retention priority (ARP)
value. Further, the modification of the UE’s MPS status is based on identifying, by the PCF unit
[122], whether the UE [102] is one of an MPS UE or non-MPS UE based on the ARP value in the
5 SM policy update request. Then, the modification of the UE’s MPS status is based on configuring,
by the PCF unit [122], a set of SM policies based on the identification. Also, for the MPS UE, no
barring set of rules are applied when the UE [102] is in a barring area, and for the non-MPS UE,
barring rules are applied. Also, the modification of the UE’s MPS status is based on detecting, by a
session management function (SMF) unit [108], a change in a subscription Quality of Service (QoS),
10 transmitting, by the SMF unit [108], a policy control update request to the PCF unit [122] indicating
the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value, and modifying, by the PCF unit [122], the UE's MPS status based on the updated ARP value received
15 [0103] As is evident from the above, the present disclosure provides a technically advanced
solution for implementing Multimedia Priority Service (MPS), while implementing a session to a user equipment (UE) in a 5G communication system. In the disclosed solution, the PCF unit [122] need not retrieve subscription data from the UDM. Accordingly, a connection between the PCF unit [122] and the UDM may not affect implementation of the MPS services to the UE, based on the
20 implementation of the present disclosure. The present disclosure enables that the PCF unit [122] can
identify non-MPS or MPS users by ARP value in the Create Request message from SMF unit [108]. The present disclosure provides an easy way to implement MPS service in the network. Furthermore, the present disclosure reduces signalling in the communication network.
25 [0104] 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 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
30 as limiting the scope of the present disclosure. Consequently, alternative arrangements and
substitutions of units, provided they achieve the intended functionality described herein, are considered to be encompassed within the scope of the present disclosure. Further, the principles, methods, and systems of the present disclosure may be applicable to all current and future generations of network.
35
[0105] While considerable emphasis has been placed herein on the disclosed embodiments, it
will be appreciated that many embodiments can be made and that many changes can be made to the
23

embodiments without departing from the principles of the present disclosure. These and other changes in the embodiments 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.
24

We Claim:
1. A method for providing multimedia priority service in a communication network, the method
comprising:
receiving, by a Policy Control Function unit [122], a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value;
identifying, by the PCF unit [122], whether a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request;
configuring, by the PCF unit [122], a set of SM policies based on the identification, wherein for the MPS UE, no barring set of rules are applied when the UE is in a barring area, and wherein for the non-MPS UE, barring rules are applied;
detecting, by a session management function (SMF) unit [108], a change in a subscription Quality of Service (QoS);
transmitting, by the SMF unit [108], a policy control update request to the PCF unit [122] indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value; and
modifying, by the PCF unit [122], the UE's MPS status based on the updated ARP value received.
2. The method as claimed in claim 1, wherein the SM policy update request is a create request initiated by the SMF unit [108].
3. The method as claimed in claim 1, wherein the policy control update request comprises a policy control event trigger related to a QoS change.
4. The method as claimed in claim 1, wherein the PCF unit [122] modifies the UEs MPS from one of non-MPS to MPS or MPS to non-MPS based on the updated ARP value.
5. A system [300] for providing multimedia priority service (MPS) in a communication network, the system comprising:
a Policy Control Function (PCF) unit [122] configured to:
receive a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value;
identify whether a UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request;

configure a set of SM policies based on the identification, wherein for the MPS UE, no barring set of rules are applied when the UE is in a barring area, and wherein for the non-MPS UE, barring rules are applied; a session management function (SMF) unit [108] configured to:
detect a change in a subscription Quality of Service (QoS);
transmit a policy control update request to the PCF unit [122] indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value; and
the PCF unit [122] configured to modify the UE's MPS based on the updated ARP value received.
6. The system as claimed in claim 5, wherein the SM policy update request is a create request
initiated by the SMF unit [108].
7. The system as claimed in claim 5, wherein the policy control update request comprises a policy
control event trigger related to a QoS change.
8. The system as claimed in claim 5, wherein the PCF unit [122] modifies the UEs MPS from one
of non-MPS to MPS or MPS to non-MPS based on the updated ARP value.
9. A user equipment (UE) for providing multimedia priority service in a communication network
comprising:
a processor [1004] configured to facilitate modification of a UE's MPS status,
wherein the modification of the UE’s MPS status is based on:
receiving, by a Policy Control Function unit [122], a session management (SM) policy update request, the SM policy update request comprising an allocation and retention priority (ARP) value;
identifying, by the PCF unit [122], whether the UE is one of an MPS UE or non-MPS UE based on the ARP value in the SM policy update request;
configuring, by the PCF unit [122], a set of SM policies based on the identification, wherein for the MPS UE, no barring set of rules are applied when the UE is in a barring area, and wherein for the non-MPS UE, barring rules are applied;
detecting, by a session management function (SMF) unit [108], a change in a subscription Quality of Service (QoS);
transmitting, by the SMF unit [108], a policy control update request to the PCF unit [122] indicating the change in the subscription QoS based on the identification, the policy control update request comprising an updated ARP value; and

modifying, by the PCF unit [122], the UE's MPS status based on the updated ARP value received.