SUMMARY:

• Tech Lead engineer with 8+ years of experience in wireless domain and worked on GSM, GPRS Confidential and IMS technologies.
• Possess B.E in electronics and communication Engineering
• Worked as a solution architect and product realization specialist in an end to end Confidential lab
• System expert on load generation and call simulation tools using Landslide
• Fluent in implementing and using 3gpp to be compliant with customer’s requirement
• Have deeper call flow understanding and then develop scripts for the following call types: Confidential, 3G basic calls, Confidential, IR94 IPME, WiFi Calling, iRAT scenarios
• Thorough understanding and application of specific node elements in Confidential network: eNB, MME/SGSN, eMBMS, Confidential, SPGW, PCRF, IMS, HSS/AAA, DRA
• Deeper working experience and understanding of different Confidential based protocols such as: NAS/AS S1AP, S1 - MME, S1-U,S2b, S3, S4, S5/S8, S9,S10, S11, S12, S102, SWu, SWm, IPSec
• Prepared data call flows based on real world scenarios: Video pacing, MMS, http and MSRP
• Developed scripts for Confidential, IR94 and IPME calls.
• Designed and implemented Scripts for WiFi Calling and verified smooth Handover to Confidential .
• Experience in test automation by using different frame works based on Confidential and has knowledge in Confidential .
• Has thorough knowledge on call processing and message flow standards of Confidential, GSM and GPRS.
• Experience in test planning, test design and test Execution.
• Good understanding of 3gpp specifications 29.212, 29.214,29.303
• Experience in feature and functional testing of Confidential Base Station controller) and SGSN which is GSM network element.
• Experience in Windows, Linux (RHEL 5), Solaris and UNIX.
• Excellent Problem identification and debugging skills.
• Very Good communication and inter-personal skills.
• Maintain productivity relationship with test engineers and developers.

TECHNICAL SKILLS::

Technologies: GSM(BTS/ Confidential ), GPRS(SGSN/GGSN) and Confidential (PGW/SGW/PCRF/ Confidential ),IMS.

Interfaces: S11, S5, S4, S12, S1-U, S2b, S6b, Gx,Sp,Rx,Sy’, Abis, A, Gb and Air Interfaces.

Protocols: GTPv2, DIAMETER and GMM,SIP,RTP,RTCP,MSRP,TCP,UDP.

Testing Tools: Nethawk, wireshark, Landslide, Ixia-Ix Load, Netscout, Dstest Developing solutions

PROFESSIONAL EXPERIENCE:

Confidential

Technologies: 4G.,2G,3G,WiFi, Confidential, IPME

Tools: Landslide

Environment: Neo Zone Consumer and enterprise zone, Sundance, ASE of Confidential lab

Responsibilities:

• Design a call flow to realize WiFi calling.
• The plan is to establish an IPSec tunnel between a simulated UE and Confidential using IKEv2. Both SHA1 and 2 are used for Authentication and AES-128 for Encryption.
• Using NDR (design) documents, Confidential model script are designed to validate vendor’s benchmark values. All mobility scenarios in a real network are converted using a simulation tool- Landslide. The following interfaces are validated and made sure to work properly per 3gpp spec: S1-MME, S1-U, S11, S5, Gx, S6a/d, Gx, and Sy before the model is automated and run. During this time all relevant IEs are checked to be in place to make the operation of all identified interfaces smooth
• Uses 3gpp Spec guidelines extensively and compliance is strictly followed including customer- centered implementations:
• Integrating Landslide simulated OCS, to PGW and PCRF for simulating Gy and Sy interfaces
• Throughput values, error codes, CPU values at max capacity, transaction rates and SAU values are taken as KPI values and provided to the customer for comparison
• NAS protocols over S1AP are checked to verify that all encryption and integrity algorithms and all other pertinent information are included correctly

Confidential

Technologies: Confidential, 2G, 3G

Tools: Landslide, IXIA, Dstest

Responsibilities:

• Responsible for writing test cases, reviewing test cases and user scenarios.
• Responsible for Functional and regression and Performance testing of PCRF,PGW using data, IR92,IR94,IPME sessions.
• Responsible for executing END to END test cases and verifying SGW, PGW, PCRF related w.r.t 3GPP.
• Testing of Confidential As part of regression testing executing Confidential test cases Attach, DSB Attach, Detach, TAU, Browsing, Throughput testing, X2-HO,S1-HO,CSFB & Confidential test cases like IMS registration,De-registration,4Gto4G voice call,M2L,4G to 3G,3G to 4G,call forwarding, call waiting, Conference call in E2E AT&T Confidential /IMS network LAB.
• Testing of Confidential and S8 home routing feature in IMS lab for Confidential calls and IR94 calls.
• Analysis of Confidential call failure logs as part of Chicago & Minneapolis field drive tests.
• Setting up the test environment, Integrating the different Confidential nodes and IMS nodes in the network
• Responsible for Testing different scenarios like Interat procedures (3G to 4G, 2G to 3G), Confidential calls, Handover scenarios.
• Supporting different interfaces like Diameter 'Gx' and ‘Sy’ between PCRF, PCEF, OCS, OFCS and Sp interface between PCRF and MIND using LDAP protocol.
• Responsible for Interaction with client for day to day activities and other issues
• Responsible for giving presentation on Project status report to higher management.
• Responsible for taking up the activities of team lead under his absence.
• Responsible for the Test Strategy, Test Cycle Management and the Requirements Traceability throughout the engagement. Highlight if there is any slippage in the plan which is laid down at the starting of the project.

Confidential

Technologies: GSM and GPRS

Environment: S15BSC, Solaris based LAPD simulators and Mobile Emulators.

Tools: and simulators: Nethawk Analyzer, wireshark, Quality Center and IDA.

Responsibilities:

• Functional testing of Confidential product S15 Confidential with respect of radio resources management between GSM and GPRS.
• Regression testing for the for new Confidential products, troubleshooting test setups and writing new cases for change request.
• Setup, configuration and maintenance of Simulators, readiness of test bed
• Automating the test cases using Confidential scripting with Gb interface messages.
• Testing of Resource allocation between GSM and GPRS, Confidential performance measurement handling.
• Test planning and test case designing based on new requirements and writing them in Quality Center.
• Test execution, analysis of results, debugging of issues & working with design team in fixing the bugs(Pronto Testing)

Confidential

Technologies: GSM and GPRS

Environment: mcBSC, S15BSC, Confidential Flexi Edge BTS Manager

Tools: and simulators: Quality Center, IDA tool and wireshark

Responsibilities:

• Regression testing and Functional testing of Confidential product mc Confidential with respect of radio resources management between GSM and GPRS.
• Testing the inherited bugs from the old product releases.

Confidential

Tech Lead engineer

Responsibilities:

• For each build, doing stability testing and Performance testing. eNodeB Cloning using Configuration Manger server.
• Verifying communication between eNodeB and Confidential Manager.
• Debugging the issues and reporting to Development team.
• Writing test cases based on Customer requirements.
• Installing eNodeB, Confidential Manager (EMS/NMS)
• Discovering eNodeB on Confidential Manager using DHCP.
• Upgrading Confidential Manager in different ways Scratch, Major Release Upgrade, and Patch Release Upgrade according to Customer requirements.
• Upgrading eNodeB from Confidential Manager and verifying Migration policies.
• Expertise in JSS configuration and NBI configuration.
• Debugging the issues and reporting to Development team.
• Verifying Procedural Customer document (Operation and Maintenance)

Tools: used: EMS,Wireshark,Test Studio,Solaris 10 OS

Confidential

Technologies: GSM

Responsibilities:

• Worked as L2 support engineer BSS
• The activities include
• Configuration of Confidential and BTS at client site
• Working knowledge on OMCR
• System configuration and troubleshooting with MML commands and NETACT
• Worked different flavours Confidential and BTS
• Trouble shooting configuration
• Analyzing the protocol message flows
• Preparing the Root Cause analysis for the Major problems.
• Given presentation on our System Architecture and its Feature.