MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202441058644 A) filed by Centre Of Excellence In Wireless Technology; and Indian Institute Of Technology Madras Iit Madras on August 02, 2024, for Method And Apparatus For Multiple User Equipment Identifier Translation In A Wireless Communication System.
Inventors include Vikram Krishnakumar; Harini Shree Velmurugan; Aswathy Subramaniam; Anusuya Balasubramanian; Jeniston Deviraj Klutto Milleth; and Bhaskar Ramamurthi.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: ABSTRACT METHOD AND APPARATUS FOR MULTIPLE USER EQUIPMENT IDENTIFIER TRANSLATION IN A WIRELESS COMMUNICATION SYSTEM The 5G Core Network (5G-CN) comprises various network functions (NFs) interacting with each other over a Service-Based Architecture (SBA) interface. Each NF has specific functionality and offers a set of services to other NFs. Among them, the Unified Data Repository (UDR) is responsible for storing all information related to User Equipment (UE) in a database. This storage information contains subscription data, exposure data, application data, and policy data. Another NF called the Unified Data Management (UDM) serves as the front-end interface to UDR for accessing the subscription data of the UE(s) from the database. UDM manages data for access authentication, access authorization, user registration, user identification handling and so on. Another important NF is Network Exposure Function (NEF) that acts as a gateway for an external untrusted application function (uAF) to avail services from 5G-CN after prior authorization and authentication based on operator policies. Apart from this, it is also responsible for translation of external information from uAF to internal information that other NFs can understand and vice versa. Any UE registered to a network is identified by a UE identifier which can be broadly classified into external identifier, like General Public Subscription Identifier (GPSI) and internal identifier that can be Subscription Permanent Identifier (SUPI). The NEF needs to contact the internal NFs in order to provide the information requested by uAF. In this regard, NEF translates external Identifiers to internal Identifiers using the subscription service of UDM and vice versa. In UDM, Nudm Subscription Data Management (Nudm_SDM) Multiple Identifiers Translation service has the provision to translate multiple GPSIs to SUPIs. This document's scope covers workable solutions that shall provide an optimization on the translation of multiple SUPIs to their corresponding GPSI(s).
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