OBJECTIVE

• Looking for a challenging career which demands the best of my professional ability in terms of technical and analytical skills, helps me in broadening and enhancing my current skills and knowledge.

SUMMARY

• Hands on Experience in Wireless and Telecommunication domain
• Proficient at technologies namely GSM, EDGE, UMTS, LTE, VoLTE, IR.94, VoWifi, OpenStack, SDN
• Familiar with the network topologies of CDMA, EVDO and LTE
• In depth Knowledge of GSM, LTE, IMS and SIP architectures and call flows
• Hands on experience of LTE core network testing and components such as MME, S - GW, P-GW, PCEF, PCRF
• In depth knowledge of IMS entities such as HSS, SPR, AAA, P-CSCF, S-CSCF, I-CSCF, MGCF, MFR, AS
• Expertise in testing the control plane and user plane with the help of Spirent Landslide test tool
• Responsible for the software, firmware and script updates on RF and Protocol conformance test systems.
• Create and execute test plans in conformance with 3GPP for PTCRB/GCF certification.
• Expertise with interfaces such as Uu, X2, S1-U, S1-MME, S11, S6a, S5/S8, S10, Rx, Gx, SGi, Gi, Gn, Gp, Sn, Sp, S2b, S6b, S6d,SGs-AP.
• Worked with protocols such as SIP, TCP/IP, UDP, GTPv-1, GTPv-2, SCTP, Diameter, DNS, LDAP, RTP and RTCP.
• In depth knowledge in protocols like GTP, NBAP, RNSAP, RNAP, MBIM
• Proficient with EPC attach procedure and relevant issues
• Familiarity with IT protocols including TCP,UDP,RTP,VLAN and SIP
• Good knowledge on networking basics, virtualization concept and OpenStack basics.
• Good understanding and knowledge of testing the Modem/Device thoroughly both at AP and CP side.
• Successful performing of IPv4 and IPv6 addressing, sub netting assignments and VLAN assignments for LTE projects through thorough understanding of CCNA and Virtual Machine concepts
• Strong understanding on 3GPP specifications particularly R8/R9/R10/R11 and R12 and legacy and LTE/VoLTE network call flows
• In depth understanding of 3GPP, ETSI and IEEE standards
• Worked on PHY,MAC,RRC layer Protocols, develop a set of test suites and automate them using Python scripting
• Technical expertise with the analysis tools like Wireshark, Network Analyzer, QCAT and testing tools like Spirent iTest, JDSU, QXDM, Snapper HS
• Exposure to the analysis of VoIP issues using IRIS Session Analyzer, JDSU, NetScout, Wireshark, Spirent Landslide
• Sound knowledge on different Android Versions and mobile handset testing using ADB (Android Debug Bridge) commands
• Experienced with testing across multiple operating systems
• Highly technical and detail focused
• Experienced with log file investigation and device configuration
• In depth understanding of SDLC and Testing Methodologies
• Adaptable to challenging environment and emerging technologies
• Articulate and amiable, thereby result successful team-work

TECHNICAL SKILLS

Tools: Wireshark, Ixload, JDSU, NetScout, Packet Tracer, QXDM, Actix One, QCAT, R&SAnritsu, iTest

Scripting: Shell, Python

Languages: MATLAB, VHDL, Verilog, C, C++

OS: Windows XP/7/8, Linux, Unix

Protocols: GTP-U, GTPv2C, NBAP, RNSAP, RANAP, SIP, DIAMETER, RTP, RTCP, TCP, UDPSCTP

PROFESSIONAL EXPERIENCE

Device Test Engineer

Confidential

Responsibilities:

• Responsible for executing throughput test for various signal strength and signal quality scenarios. For e.g. Weak, Medium and Strong Signal conditions.
• Responsible to perform Protocol Tests, Mobile Carrier Services tests and Bearer Tests.
• Successfully performed Key Performance Indicator tests and collected the logs in case of issue.
• Perform basic analysis of test cases and logs (using QCAT) providing efficient means to debug them.
• Expertise with Wireless Technologies like GSM, UMTS,LTE,VOLTE
• Understanding of LTE, IMS architectures and call flows
• Hands on experience with platforms like MSC, SGSN, GGSN, VLR, HLR
• Perform release and acceptance testing for GTP-RNC
• Perform Wireless network protocol testing in GSM, GPRS, WCDMA, UMTS environments
• Experience in test cases preparation, execution and documentation of test report
• Employ tracing tools like Wireshark and Tektronix IRIS to capture UDP, TCP and GTP protocols in order to analyze the call flow requests and responses
• Analyze QXDM Logs at different layers using QCAT, Actix One and Wireshark Tools.
• Excellent knowledge of WLAN protocol and test case development.
• Experience in mobile handset testing of modem and application in 2G, 3G and 4G environment.
• Execute and manage device stability testing, modify automation scripts and execute test cases using ANITE tool.
• Perform release and acceptance testing for GTP-RNC.
• Experience with protocol analyzing: TCP,UDP,RTP,VLAN and SIP
• Experience in testing Modem to operate in WCDMA/GSM/LTE mode.
• Analyzing the log messages for abnormal activity and figuring out the cause for the issue and generation of ticket.
• Experience in test cases preparation, execution and documentation of test report.
• Excellent knowledge of SIP architecture, call flows and messages.
• Perform Network optimization, Cell Definition and RF Design.
• Perform Wireless network protocol testing and Deployment in GSM, GPRS, WCDMA, UMTS environments.