LTE INTEROPERABILITY TEST ENGINEER LTE | 1xhybrid | SRLTE | VoLTE | hVoLTE | CDMA | HRPD | Over 3.5 + years of experience in wireless devices testing and validation. Good knowledge on LTE specifications for different layers (NAS, RRC, PDCP, RLC) Working experience of LTE advance features like SRLTE, hVoLTE, VoLTE and 1xhybrid. Reporting and proactive follow-up on functional and performance issues Troubleshooting and log file analysis in close cooperation with vendor.
IOT TEST ENGINEER, 05/2015 to Current
NOKIA NETWORKS, ALCATEL-LUCENT – Murray Hill, NJ
Performed basic cdma call processing, registration test on Band Class 1/10/ 0 for testing forward radio configuration and reverse radio configuration.
To execute the test, translation were performed on base station like setting service option to EVRC, EVRC-B or 13K.
Performed Mobile Station Originated call with Inter Band Channel Assignment, Network busy, Intra-Band Channel Assignment, Soft Handoff without dynamic threshold.
Executed Service re-direction test cases like Global service re-direction between band classes, extended global service re-direction to different channel on same band class.
Performed 1x data performance by configuring F-SCH max and min rate Performed Mobile Originated and Termination SMS test cases on traffic, access channel by setting translation on base station.
HRPD: Performed basic HRPD Acquisition and Idle mode Operation test cases.
Executed basic data performance test cases on Rev A and Rev0.
Performed idle and active inter revision handoffs between RevA and Rev0, inter technology switching between HRPD and cdma2000.
This was executed by setting up translation in OMC-RAN by creating neighbors between 2 base stations.
SRLTE: Performed power up, system selection test cases in SRLTE Mode Monitored the behavior of Mobile Origination Voice call in SRLTE Mode during no 1XRTT System.
Executed 3-Way Calling, SMS related test cases like origination, re-try Feature support in SRLTE mode Performed basic TCP/UDP UL and DL throughput performance while in SRLTE mode in presence and absence of QPCH.
Monitored the behavior of SRLTE UE Reacquiring LTE data in different band and in different tracking Area in new MME after 1XRTT voice call.
1 hVoLTE: Performed basic power up test cases in hVoLTE mode into VOPS capable region and Non VOPS region.
Performed basic SIP test cases like SIP invite time out, SIP registration, de-registration etc Performed Service Specific Access Class, Mobile data barring related test cases.
Monitored transitions of device between VoLTE and SRLTE states when Entering SSAC Barring for MMTEL Tracking Area and Interaction with VoLTE_hyst timer.
Performed basic network reject silent redial on 1xRTT calling test cases by configuring the DCN.
Performed WPS Calling test cases during idle and active VoLTE call.
Performed basic UDP data performance during active VoLTE call.
Performed some silent redial test cases upon getting service request rejected with EMM cause code 9, RRC connection reject message for MO, RACH failure for MO VoLTE call, on loosing IMS PDN connection and Timer_VZW expiry.
Monitored the behavior of device in loosing LTE Service While on VoLTE call and Acquiring eHRPD and 1XRTT System.
LTE Functionality and Performance: Executed LTE intra and inter band handover test cases like Intra-eNB, X2-based, S1-based, inter MME, with active measurements.
Executed LTE handover with measurements-A5 event based Performed LTE intra and inter band network re-direction test cases.
Performed LTE intra and inter band cell reselection test cases.
Performed basic LTE attach, detach, IMS registration-de-registration, Normal Tracking Area, Periodic Tracking Area related test cases.
Performed LTE data performance in Closed loop, Open Loop, Transmit diversity mode in uplink and Downlink QPSK.
Executed loss of enode b one antenna path attach and rank indication test cases during active file transfer VoLTE: Executed basic IMS registration, IMS re-registration, multiple PDN attach, multi-bearer establishment related test cases.
Performed presence of publication, TTI bundling and ROHC related test cases.
Performed basic VoLTE Voice and Video call related test cases like origination, termination, conference call, video to voice upgrade and vice versa.
Performed intra and inter band handover test cases during active video/ voice call.
Performed call waiting , caller id restrict related test cases 1xHybrid: Executed basic registration, SMS, and call performance related test cases in idle and connected mode.
Monitored the performance of device during executing emergency call.
Protocols Tools: Wireshark Other tools: Sun Workstation in order to perform translation, configuring network by loading databases in respective eNB.
Basic parameter modification were performed as per test cases.
FIELD TEST ENGINEER, 09/2012 to 05/2015 P3 COMMUNICATIONS – Morristown, NJ
Performed application testing on various Verizon applications like Verizon Messages, My Verizon, and also on some daily used applications like Facebook, Skype, Hulu+ etc.
Performed Location Based Testing by collecting GNSS fix data and NMEA text file which includes the Latitude and Longitude values.
Performed NFC payment testing by configuring wallet using major credit cards Created a defect report by including the defect ID, defect priority, actual results, expected result, execution steps and number of attempts tried for execution etc for open bugs.
Executed Verizon OTADM [Over the Air Device Management] test cases like server Authentication, APN Managements, Verifications and Operations, APN case names insensitive, APN triggered management, and APN Data retry parameters and manual assignments, device extension node test cases etc.
on Alcatel Lucent's server: https://ivzwsmpii.iot.motive.com by verifying the status of LTE nodes.
Executed full Verizon domestic field test cases including Stationary/Mobility 1xRTT/EVDO/LTE performance testing, Voice call Performance in Marginal and Mixed coverage, LTE Data calls and Feature test cases which includes Service provisioning test, System selections and registrations, Subscribers calling features, SMS over IMS/1xRTT, Data Services functionality, Concurrent services, SIM Pin, and Feature interruptions etc.
Collected the ADB logs (Events/Main/Radio/System) to determine the root cause failure.
Experience in calculating the diversity antenna performance results using Wind Catcher tool.
Performed Route characterization by scouting routes for LTE and legacy network for T-Mobile and Sprint and executed test cases for Stationary Data Performance, Voice Call Performance, Wi-Fi call performance, Mobility data transfer and Power-cycle test cases to observe PLMN switch on Fi- Network.