Prerna GuptaEmail: prernagupta43@gmail.comMobile: +91-8722300016Organization: Aricent July11-PresentDesignation: Senior software engineer

Profile Summary

4.11 years of IT experience in telecom domain in LTE.

Good knowledge of LTE end to end Call Flows.

Good understanding of NAS, S1ap, GTP and Diameter interfaces and 3GPP specifications.

Fair knowledge of LTE Enodeb L3 layer.

Worked in developing various features of LTE-MME and testing LTE core network nodes (MME,

SGW, PGW and HSS).

Implemented projects encompassing full Software Development Life Cycle (SDLC) including

requirement gathering and analysis, design, development, deployment, maintenance and

migration.

Delivered responsibilities as Programmer for Design, Development and Creating Test Plans.

Hands on experience in TCL/TK scripts for Automation of test cases.

A highly motivated, energetic individual and a team player with excellent interpersonal skills.

Strong communication skills while interacting with team and client.

Skills Summary

Domain LTE

Software Engineering High Level Design, Low Level Design, Coding, Unit

Testing, Bug Fixing and Support, Integration Testing,

Regression testing, Feature Testing, Performance testing.

Programming Language C, TCL/TK

Protocols and Technology NAS, S1AP, GTP, DIAMETER, SBC, TCP, UDP and

SCTP

Operating Systems Linux (Programming Level) , Windows (User Level)

Tools GDB(Debugging), Wireshark, Valgrind, Bugzilla, Bullseye,

Quantify

Projects

LTE EnodeB Layer 3 feature development and supportDescription Worked on the feature development in layer 3 of LTE EnodeB. Provided

support for L3 issue raised during field testing done by Customer.

Contribution Performed requirement analysis and developed full design for load indication feature.

Developed code for Load indication and stats in C. Performed developer level testing and Integration testing. Debugging and fixing of bugs raised during field and integration

testing.Tools C, Wireshark, GDB.

Duration September 2015 to till present

Team size 12

Organization Aricent

Onsite and offshore support to Customer for EPC

Description Worked on a services project and given support to Customer for LTE-EPC.

Contribution Handling various issues raised by Customer on LTE-EPC. End to end testing with EnodeB, LTE-EPC and real UE. Made HLD and LLD design for adding a feature in LTE-MME node with

minimal guidance. Have done implementation and testing of the above feature in LTE-

MME node with minimal guidance.Tools C, Wireshark, GDB.

Duration April 2014 to August 2015

Team size 2

Organization Aricent

Performance testing of HAF and X2/S1 Handover and Customer Support in MME

Description Have done Performance/Stability Testing of MME for HAF feature and X2/S1 Handover procedure. This includes minimum time to replicate data from Active MME to Standby MME and minimum switch over time if Active MME goes down.

Provided Support to various Customers of LTE-MME node and solved issues for various features of LTE-MME node with quality.

Contribution Debugging and fixing of bugs raised during performance testing. Provided Support to all the Customers of LTE-MME. Solved various issues reported by Customers.

Tools C, Wireshark, GDB

Duration August 2013 to March 2014

Team size 6

Organization Aricent

Cell Broadcast Centre (CBC) and Operator/HSS based Subscriber Tracing (TSR) in MME

Description Cell Broadcast Centre (CBC) was a solution for the special requirement of an Earthquake and Tsunami warning system (ETWS). It utilizes the existing interfaces between UE and MME in control plane. Additionally the MME is connected to the CBC via the SBc interface.

Subscriber tracing provides detailed information at the call level for the UE (user). This is done to measure the performance of network elements as well as the quality of services given to the user while using LTE network. Subscriber is also traced on demand of the user itself if it is not getting the good or appropriate quality of services from the LTE network. Operator can also trace some of the random users to check the quality of network.

Contribution Performed requirement analysis and High level designing. Participated in creating System integration Test Plan for the LTE-MME. Responsible for coding and Testing of major modules. Handling of Field Testing Issues, finding and fixing them. Performed code Review. Performed System Integration testing of complete system.

Tools C, Wireshark, GDB, Valgrind.

Duration September 2012 to July 2013

Team size 8

Organization Aricent

Emergency Calls and Closed Subscriber Group (CSG) in MME

Description The support for emergency calls is required across the network and UE. Any UE can make an emergency call, provided network supports it. This means there is no authentication required for UE to make emergency call.

Closed Subscriber Group identifies a group of subscribers who are permitted to access one or more CSG cells of the PLMN.

Contribution Involved in every phase of Software development life cycle. Developed code for emergency call and CSG in C. Performed peer code review. Effectively tracking of bugs and reporting to improve system stability,

excellent ability to notice, do research and report bugs and fixed them. Provided support to system integration team and Customers.

Tools C, Wireshark, GDB, Valgrind

Duration Feb 2012 to August 2012

Team size 10

Organization Aricent

High Availability Factor (HAF) and Lawful interception (LI) in MME

Description High-availability in MME helps to ensure subscriber satisfaction and 99.999 percent system availability. There is a Standby MME node for every Active MME and if Active one goes down then Standby takes the role of Active MME.

MME provides the whereabouts of UE to law enforcement monitoring facility. Lawful Interception is a security process in which a service provider or network operator collects and provides law enforcement officials with intercepted communications of private individuals or organizations.

Contribution Performed requirement analysis and developed low level design. Developed code for HAF and LI features of MME in C. Preparation of Release Test Plan for the LTE-MME. Performed developer level testing, Integration testing and Regression

testing. Developed scripts in TCL to execute the test plan. Participated in debugging and fixing of bugs raised during testing.

Tools C, gdb, Wireshark, Valgrind.

Duration July 2011 to Jan 2012

Team size 14

Organization Aricent

Automation Suite for LTE-MME during Job training

Description This is the project done during the Training program in Aricent. It is designed to accelerate the time to test all the features that MME supports.

Contribution Involved in making TCL scripts used during Automation. Involved in making framework for Automation suite.

Tools C, Wireshark, STATE tool

Duration Jan 2011 to June 2011

Team size 4

Organization Aricent

Achievements and Awards

Nominated in “Annual Awards” for the Rising Star Award category.

Received three Team Awards for high quality release for QY2011-2012 and QY2012-2013 from

Aricent.

Awarded “EXCELLENCE AWARD” in year 2012 for demonstrating high level of technical

competency and commitment during testing of IPV6 and HAF feature of LTE-MME 1.1 Release.

Educational Qualification

Degree/Diploma University/Institute Year of Passing Percentage/CGPA

Master of Computer Applications (MCA)

Thapar University, Patiala 2011 8.36/10

(CGPA)

Declaration

I declare that the above mentioned details are true to the best of my knowledge.Prerna Gupta