Telecom Engineer Resume

SUMMARY:

Professional experience with Wireless and Telecommunications technologies such as VoLTE, LTE, UMTS, EDGE, WCDMA, GPRS and GSM.
Strong understanding of E2E call flows of LTE, VoLTE, IR94, VoWiFi.
Expertise with LTE entities namely eNodeB, MME, SGW, PGW, PCEF, PCRF, and SPR.
Hands on experience on IMS components such as PCSCF, SCSCF, ICSCF, MGCF, BGCF, TAS, SCC - AS, MFRC, and AS.
Proficiency with interfaces like IuPC, X2, S1-MME, S1-U, S10, S5, S8, S9, S11, S6a, S6d, Gx, Gi, SGi, Gn, Gy, Sy, Sp, Rx, Cx, Mw, Gm, Cr, Dx, Mi, Mj, Mg, Mp, Mr, Mk, Mn, Sh, and Dh.
Concrete expertise on the protocols like DIAMETER, SIP, HTTP, DNS, GTP, NBAP, RNSAP, RANAP, BSSAP+,FTP, RADIUS, SCTP, TCP, UDP.
Sound knowledge on LTE protocol testing on different layers like MAC, PHY, RRC, L4 and L5.
Experience in Analyzing Physical Layer (L1) logs and Troubleshoot issues.
In depth understanding of SIP Architecture, call flows and services.
Sound knowledge on SRVCC, CSFB, Intra and Inter Handovers, S1 and X2 based handovers.
Knowledge on mobility virtualization NFV, SDN and Orchestration for load balancing.
Extensive knowledge on OpenStack projects like Horizon, Keystone, Ceilometer, Swift, Nova, Cinder, and Glance.
Efficient performing of IPv4, IPv6 addressing and subnetting assignments.
Hands on experience in testing cell optimization, LTE/VoLTE handover and call processing.
Expertise in Carrier Acceptance and RF Conformance Testing.
Expertise in end-to-end LTE/VoLTE wireless network testing.
In depth knowledge on 3GPP, 3GPP2 and IEEE standards.
Experience in performing Functional, Regression and Integration Testing.
Worked on L2 and L3 Telecom protocols to develop test suites and automate them using Python scripting.
Knowledge on AT Commands to verify the functionality of chipsets under test.
Sound knowledge on different Android Versions and mobile handset testing using ADB (Android Debug Bridge) commands.
Experience in mobile handset testing of modem in 2G, 3G and 4G environment.
Exposure to VMware and delivering a virtual infrastructure by using VMware Vcenter server.
Exposure to JDSU, EPC IRIS, Anritsu, Spirent iTest, Agilent, Wireshark, Ixia, IXLOAD Actix One, Packet Tracer, GNS3, R&S CMW500, CMU, JIRA.
Practical knowledge in IP-Subnetting, VLSM, OSPF, EIGRP, RIP, BGP.
Adaptable to challenging environment and emerging technologies.
Ability to handle multiple projects simultaneously.

SKILLS:

Tools: JDSU, EPC IRIS, Anritsu, Spirent iTest, Agilent, Net Scout, R&S, Wireshark, Ixia, IXLOAD, Multi UE, Agilent, Actix One, Landslide, Packet Tracer, GNS3, QXDM, QCAT, Snapper, R&S CMW500, CMU.

Operating Systems: Windows, Linux, UNIX.

Scripting: Python, Shell.

Languages: C, HTML, CSS, Java Script, Matlab, VHDL, Verilog

EXPERIENCE:

Telecom Engineer

Confidential

Responsibilities:

Responsible to Plan and Create Test Cases, Execute and run Automated Test Scripts.
Analyze interfaces such as X2, S1-MME, S1-U, S10, S5, S8, Gx, Gy, SGi, Gi, Gn, Sy, Sy’ (Sy prime), Rx, Cx, Mw, Gm, Cr, Dx, Mi, Mj, Mr, Mg, Mp, Mk, Mn, Sh and Dh between network elements and gateways.
Ensure end-to-end call flow and continuity via SRVCC on LTE to 3G technologies by tuning SRVCC parameters.
Isolate and troubleshoot problems to EPC elements UE, eNodeB, MME, HSS, S-GW, P-GW, PCEF, and PCRF.
Responsible to create and maintain Test procedures and documents (MOPS).
Employ Ixia test equipment in IP network testing.
Collect logs at LTE protocol stack and generate Key Performance Indicator (KPI) reports.
Implement LTE protocol testing on Layers PHY, MAC, RRC, L4 and L5.
Analyzing physical layer logs (Level 1) and trouble shoot issues.
Proficient in the test setup, test execution, log analysis and troubleshooting scenarios pertaining to Mobile-to-Mobile (M2M), Mobile-to-PSTN, CSFB, SRVCC and Supplementary Services.
Prepare System Performance reports and Key Performance Indicator (KPI) report, conduct detailed KPI analysis and provide technical support.
Execute different test strategies and troubleshoot to optimize system performance.
Optimize performance by decreasing DCR (Drop Call Rate).
Perform interoperability test and identify the issues associated.
Balance traffic load between LTE and UMTS to ensure Throughput and Quality.
Analyze call flows, Intra and Inter LTE handovers, and layer-3 messages.
Address and resolve tickets and thereby improve network quality problems.

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