Name: Kumar Lagishetti

E-mail: lagishettik@gmail.com

Phone: (408) 357-4297

 

Summary:

 

Ø      5 years of experience in UMTS and LTE system testing and optimization.

Ø      Performed Functional and GUI testing along with regression testing to validate the defects on every build (Wide range of test execution, Critical log analysis and troubleshooting).

Ø      Expertise in LTE Network testing EPC nodes such as MME, SGW, PGW, OFCS, OCS, PCEF, and PCRF.

Ø      Hands on experience in EPC interfaces such as S1-U, S1-MME, S6-a, S10, S11, S5/S8, Gx, Gi/SGi, Gy and Sp.

Ø      Good Knowledge in IMS scenarios such as session management i.e. P-CSCF, I-CSCF, S-CSCF, database (HSS-IMS, ENUM, TAS, DNS) and interworking as MRF, MGCF, BGCF.

Ø      Performed testing on various IMS interfaces which include Rx and Sh.

Ø      Knowledge on SIP, RTP, S1-AP, X2-AP, GTP-Uv1, GTP-Cv2, Diameter and RTCP protocols.

Ø      Experienced in developing system test plans Prepare Test Report and identify test cases.

Ø      Excellent hands on experience with LTE Protocol conformance testing, analyzed end to end call flows for different LTE scenarios (Ex: Attach, Detach).

Ø      GSM RF Network Planning, which includes Coverage Planning, Frequency Planning & Interference Analysis.

Ø      Responsible for Planning New Offloading sites according to cell utilization of existing site by analyzing utilization report of sites.

Ø      Preparing test cases according to 3GPP specification, accordingly preparing the test strategy and participating in recursive operation.

Ø      Excellent personal and self management skills with Strong knowledge in networking concepts and Routing Protocols.

 

Skills:

 

Ø      Wireshark, iperf, Winscp3, Polaris EPC Test tool (Console, Functional Tester), Putty Connection Configuration.

Ø      Knowledge on Wireless Technology GSM, CDMA, HSPA, GPRS, WCDMA, UMTS and LTE.

 

Work Experience:

 

LTE Testing EngineerJan 2014-Present                                                                                             

Alcatel Lucent, IL

 

Ø      Performed testing on  IMS Interfaces Rx, Mw, Mr, Mp, Cx, Mi, Mj

Ø      Worked on end to end call flows for IP Messaging (SMS over IMS) and MMS.

Ø      Worked as LTE Network tester in EPC nodes such as MME, SGW, PGW, OFCS, OCS, PCEF,PCRF and interfaces as Gx, Gi, S4, S5, S8, S11, Ga, Gx, Gy.

Ø      Worked on SIP call flows (Call waiting, call hold, call forward, call busy, and Response codes).

Ø      Tested CS fall back test cases using QXDM tool and Qualcomm/HTC UE. Analyze a QXDM data using QCAT to find out RRC messages.

Ø      Worked on protocols such as Diameter, SIP, TCP, RTP, RTCP, GTP-C, GTP-U, LDAP, SCTP and UDP.

Ø      Observed SDN and open flow (Switch) can be seen as enablers for virtualization of the EPC.

Ø      Deployment of networks using NFV concept such as IDS Devices, Load balancers and WAN Accelerators. 

Ø      Good Knowledge on mobile handset testing (Modem & Application) and troubleshooting the call flow scenarios.

Ø      Effectively learned LAB testing and field testing for VoLTE, LTE and IMS Network.

Ø      Traced and analyzed the network flow using packet analyzing tools such as wireshark.

Ø      Responsible for end-to-end testing of VoLTE network and Verified VoLTE telephony voice services SRVCC (Single Radio Voice Call Continuity) features in operators.

 

RF Transmission and IBS Survey EngineerJune 2011-Nov 2013

Ericsson, India

 

Ø      Responsible for Survey which includes new site survey capacity site survey, site relocation, Site survey to offload highly utilized cell. 

Ø      Locating the Nominal using GPS, Noting present Signal Strength using Net Monitor. 

Ø      Optimization of the design, by implementing necessary changes to meet the KPIs.

Ø      Proposed Optimization which includes proposing the height and azimuth of sector to utilize the cell maximum, propose estimated electrical and mechanical tilt to prevent overshooting.

Ø      Responsible for TND (Transmission Network Design) which includes LOS Survey and analyzing the clearance margin, propose height and azimuth of the microwave antenna, making presentation using RL Tool. 

Ø      Taking the proper layout of the building with proper cable routing, identifying the shafts for the cables routing of IBS.

Ø      Deciding and planning the number of antennas to be plan for each floor, types of antennas to be propose, while planning maintaining the minimum distance from the bts to the antennas to avoid signal losses through cable for IBS. 

Ø      Performed RF data collection to ensure that the quality of service meets RF design specifications such as RxLev, Rx Quality, Handover, parameter verification when RF equipment is installed.

 

 

 

 

RF Drive Test EngineerJune 2010-May 2011

Prithvi information solution, India

 

Ø      Responsible of RF drive testing, maintaining test procedures and identifying RF system issues.

Ø      Checking for site neighbor addition and deletion as per coverage, handover issue, call drop, mos test, GPRS test.

Ø      Testing Rx lev, rxqul, C/I, bcch, GPRS, call setup time, Call setup success rate, Call completion success rate, handover failure.

Ø      Performed single-site cluster drive testing and measurements collection for newly added sites.

Ø      Performed data service testing and measurement at stationary positions.

Ø      Handled the tasks of optimization and validation RF Drive and post processing of data.

Ø      Responsible for debugging radio frequency issues and inspecting plans for developing standard requirements.

 

Education Qualifications:

 

Bachelor’s of Technology

Electronics and communication Engineering

India