EP-4740371-A1 - METHOD AND SYSTEM FOR IDENTIFYING SCSCF NODE ASSOCIATED WITH ORIGINATING PARTY

EP4740371A1EP 4740371 A1EP4740371 A1EP 4740371A1EP-4740371-A1

Abstract

The present disclosure relates to a method and a system for identifying a serving call session control function (SCSCF) node [108] associated with an originating party. The disclosure encompasses identifying, a special prefix by identification unit [107] at an interrogating call session control function (ICSCF) node [106] associated with a receiving party, upon an initiation of a call from the originating party to the receiving party; performing a SCSCF node selection procedure for identifying the SCSCF node [108] associated with the originating party based on the special prefix by a selection unit [109] at the ICSCF node [106]; and identifying the SCSCF node [108] associated with the originating party based on the configuration of the ICSCF node [106] by the identification unit [107] at the ICSCF node [106],

Inventors

BISHT, BIRENDRA
BHATNAGAR, AAYUSH
BHATNAGAR, PRADEEP KUMAR
Singh, Harbinder Pal
KUMAR, ABHAY
Kelkar, Priti
REDDY, P R Srikanth
Eslavath, Mahendra Varma
RANJAN, Surabhi

Assignees

Jio Platforms Limited

Dates

Publication Date: 20260513
Application Date: 20240614

Claims (1)

We Claim: 1. A method [200] for identifying a serving call session control function (SCSCF) node [108] associated with an originating party, the method [200] comprising: - identifying, at an interrogating call session control function (ICSCF) node [106] associated with a receiving party, by an identification unit [107], a special prefix, wherein the special prefix is attached in a contact number of the receiving party, by an application server (AS) [104] connected to the SCSCF node [108] associated with the originating party, upon an initiation of a call from the originating party to the receiving party; - performing, at the ICSCF node [106] associated with the receiving party, by a selection unit [109], a SCSCF node selection procedure for identifying the SCSCF node [108] associated with the originating party, based on the special prefix; and - identifying, at the ICSCF node [106] associated with the receiving party, by the identification unit [107], the SCSCF node [108] associated with the originating party based on a configuration of the ICSCF node [106]. 2. The method [200] as claimed in claim 1, wherein prior to the attaching, by the AS [104], the special prefix in the contact number of the receiving party, the method [200] comprising: - receiving, by the SCSCF [108] associated with the originating party from a user device, the call initiated by the user device. 3. The method [200] as claimed in claim 1, the method [200] further comprising: - initiating, by the AS [104] connected to the SCSCF node [108] associated with the originating party, the call to the receiving party. 4. The method [200] as claimed in claim 3, wherein the initiating, by the AS [104] connected to the SCSCF node [108] associated with the originating party, the call to the receiving party, comprises: - sending, by the AS [104] to the ICSCF node [106] associated with the receiving party, a session initiation protocol (SIP) message, wherein the SIP message comprises the special prefix attached in the contact number of the receiving party. 5. A system [100] for identifying a serving call session control function (SCSCF) node [108] associated with an originating party, the system [100] comprising: - an interrogating call session control function (ICSCF) node [106] associated with a receiving party, the ICSCF node [106] configured to have: o an identification unit [107] configured to identify, a special prefix, wherein the special prefix is attached in a contact number of the receiving party, by an application server (AS) [104] connected to the SCSCF node [108] associated with the originating party, upon an initiation of a call from the originating party to the receiving party; and o a selection unit [109] connected to at least the identification unit [107], wherein the selection unit [109] being configured to perform, a SCSCF node selection procedure for identification of the SCSCF node [108] associated with the originating party based on the special prefix, wherein the identification unit [107] is further configured to identify, the SCSCF node [108] associated with the originating party based on the configuration of the ICSCF node [106]. 6. The system [100] as claimed in claim 5, wherein prior to the AS [104] attaching the special prefix in the contact number of the receiving party, the SCSCF [108] associated with the originating party is configured to: - receive the call initiated by a user device. 7. The system [100] as claimed in claim 5, wherein the AS [104] connected to the SCSCF node [108] associated with the originating party is further configured to: - initiate the call to the receiving party. 8. The system [100] as claimed in claim 7, wherein the AS [104] connected to the SCSCF node [108] associated with the originating party, for initiating the call to the receiving party, is configured to: - send, to the ICSCF node [106] associated with the receiving party, a session initiation protocol (SIP) message, wherein the SIP message comprises the special prefix attached in the contact number of the receiving party. 9. A non-transitory computer-readable storage medium for identifying a serving call session control function (SCSCF) node [108] associated with an originating party, the storage medium comprising executable code which, when executed by one or more units or an interrogating call session control function (ICSCF) node [106], causes: o an identification unit [107] to identify a special prefix, wherein the special prefix is attached in a contact number of the receiving party, by an application server (AS) [104] connected to the SCSCF node [108] associated with the originating party, upon an initiation of a call from the originating party to the receiving party; and o a selection unit [109] to perform a SCSCF node selection procedure for identification of the SCSCF node [108] associated with the originating party based on the special prefix, wherein the identification unit [107] is further configured to identify, the SCSCF node [108] associated with the originating party based on the configuration of the ICSCF node [106].

Description

METHOD AND SYSTEM FOR IDENTIFYING SCSCF NODE ASSOCIATED WITH ORIGINATING PARTY FIELD OF THE DISCLOSURE [0001] The present disclosure relates generally to the field of wireless communication systems. More particularly, the present disclosure relates to methods and systems for identifying Serving - Call Session Control Function (SCSCF) node associated with originating party. BACKGROUND [0002] The following description of 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 be used only to enhance the understanding of the reader with respect to the present disclosure, and not as admissions of 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. The third generation (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] Interrogating Call Session Control Function (I-CSCF) is responsible for onward routing of a Session Initiation Protocol (SIP) messages to the appropriate Serving Call Session Control Function (S-CSCF) for a given subscriber. This routing capability is utilized in specific scenarios only, such as during registration in order to assign or ascertain the S-CSCF which should be used. Routing SIP requests arriving from other SIP networks is also a responsibility of the I-CSCF. The I-CSCF queries the HSS in order to discover the S-CSCF a particular subscriber has been assigned to or select a new SCSCF based on configured capabilities. [0005] However, in the existing methods, a user cannot be charged for multiple data communication sessions initiated by special application server (AS). Also, legal implication of tracing back of call to originating party, i.e., the user that initiates a call, especially in case of multiple receiving parties, i.e., the users that receive the call initiated by the originating party, involved, was not possible to be identified. [0006] Thus, there exists an imperative need in the art to provide a method and a system for identifying Serving - Call Session Control Function (SCSCF) node associated with originating party, which the present disclosure aims to address. OBJECTS OF THE DISCLOSURE [0007] Some of the objects of the present disclosure, which at least one embodiment disclosed herein satisfies are listed herein below. [0008] It is an object of the present disclosure to provide a system and a method for identifying Serving - Call Session Control Function (SCSCF) node associated with originating party. [0009] It is another object of the present disclosure to provide a solution that where ICSCF only interrogates a contact number associated with originating party and ignores a contact number associated with receiving party. [0010] It is yet another object of the present disclosure to provide a solution that removes the requirement of another charging system to be developed at special Application Server (AS). [0011] It is yet another object of the present disclosure to provide a solution that fulfils the legal telecom requirement of tracing the origin of the call, especially when special AS is involved. [0012] It is yet another object of the present disclosure to provide one-to-many data communication session. SUMMARY [0013] This section is provided to introduce certain objects and 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. [0014] In order to achieve at least one of the objectives as mentioned above, one aspect of the present disclosure relates to a method for identifying a serving call session control function (SCSCF) node associated with originating party. The method comprises identifying, at an interrogating call session control function (ICSCF) node associated with a receiving party, by an identification unit, a special prefix, wherein the special pr