Wireless QA Engineer

Naga Priyanka Peddinti

619-***-**** ********.*****@*****.*** www.linkedin.com/pub/priyanka-peddinti/54/263/9b/ Professional Experience

Software Design Engineer in Test-1 – Microsoft, Redmond, WA July ’16 – Dec ’16

Responsible for:

- Device testing on WiFi and BT drivers/components on Microsoft Surface retail devices.

- Efficient troubleshooting/debugging and isolating issues in complex scenarios.

- Defining test plans from variables, and deal with ambiguity.

- Basic Python scripting, Wi-Fi and Bluetooth software testing.

Worked on:

- Basic verification of WiFi driver functionality on Surface devices including features over both 2.4GHz and 5GHz bands such as Scanning, Roaming, Connected Standby/Disconnected Standby, Hidden SSID, WPS, Airplane mode, WiFi Co-SAR.

- Basic verification of BT driver functionality on Surface devices including features such as Discoverability, Pairing/Connection/Disconnection, Reconnection of BT slave to Master device after BT radio reboot/BT device reboot/Master device reboot/Airplane mode, Out of Range testing.

- Verifying and testing the interoperability of the device’s BT driver over various BT devices/profiles such as A2DP, HFP, AVRCP, HID, HCRP, OPP, PAN.

- Stress testing the Connection Reliability and Re-connectivity of the BT radio on Surface devices.

- Collect BT logs, and analyze BT activity and issues using Ellisys BT protocol analyzer.

- Verification and validation of WiFi Direct/Miracast and WiFi-BT coexistence.

- Windows/Kernel Debugging and trace analysis; Windows System Event logging and analysis. Tools: Tping, BTlogging & WiFi logging scripts, WinDbg, ETW tracing, TFS, Ellisys BT protocol analyzer, iperf Hardware test Engineer – Apple Inc., Sunnyvale, CA Dec ’15 – July ‘16

Responsible for:

- Set up daily regressions, send out test reports.

- Identify issues, raise bugs, collect logs and analyze the issues, work with other SW/HW engineers to resolve bugs.

Worked on:

- Testing MacBook hardware and verifying sanity of the units.

- On a daily basis, perform manual tests and run automated tests using Perl and Python scripts.

- Perform hardware regressions and coordinate with worldwide teams to track issues and validate.

- Reproduce issues and analyze logs effectively for debugging. Wireless Test Engineer – Zebra Technologies, San Jose, CA May ’15 – Sep ‘15

Responsible for:

- Write and update test plans, identify test case scenarios, design and implement test bed.

- Report bugs, collect and analyze packet captures and server logs to debug the issue.

Worked on:

- Test and validate BLE (Bluetooth Low Energy) locationing firmware; identify, debug and track issues, work with dev-team to debug issues and recreate bugs, follow up to resolve bugs and re-verify; Update and execute python automation scripts.

- Test and validate client SDK on Android and iOS devices, verify functionality and compatibility with all devices.

- End to End testing of Zebra’s retail products and MPact server with respect to functionality, data accuracy. Tools Used: Wireshark, tshark, TI BLE sniffer, Tortoise SVN, WinScp/FileZilla FTP client, Putty WLAN System Test Engineer – Qualcomm-Atheros, San Jose, CA Sep ‘14 – Feb ‘15

Responsible for:

- Setting up test environments, executing test cases under a diverse collection of operational scenarios

- Data analysis, results interpretation, issue debugging and reporting

- Working with the HW/SW, system engineers and co-ordinate with the team.

Worked on:

- 802.11n/ac Stations :

Testing Wi-Fi Sanity/Stress/Throughputs on Windows/Android

Testing features like Miracast, YouTube streaming, roaming, inter-AP hand over, hidden AP, Soft AP

(hotspot)

Collecting kernel-level logs and analyzing for initial debugging.

- 802.11 n/ac Access Points:

Setting WDS test environment for APs of different vendors.

Testing new system level features and configuring AP. Tools Used: JTag, WinDbg, QXDM, QPST, Omnipeek, Wireshark, iperf, wperf, Chariot Mobility Network Support Engineer – AT&T Mobility Labs, Redmond, WA March ‘14 – Sep ‘14

Responsible for provisioning SIMs and troubleshooting issues

Registering the SIMs onto HLR and HSS.

Resolved issues of SIM accesses by coordinating with the testing teams and provided network support on IMS, VoIP, VoLTE network protocols and End-to-End call processing Student Research Intern – National University Comm. Research Institute, La Jolla, CA. Sep ‘12 – April ‘13

Researched on Wireless Healthcare & Wireless Sensor Networks and applicable technologies like BT.

Co-ordinated with a team of student interns and worked on deadline-oriented tasks. Skill set

Wireless: 802.11 a/b/g/n/ac, BT/BTLE (A2DP, HFP, AVRCP, HID, HCRP, OPP, PAN), WiFi CoSAR, OFDM, MIMO, LTE/UMTS – good knowledge on Network Architecture, Call Flows and KPIs; working towards CWNA certification

Networking: Basic L2/L3 networking, TCP/IP protocols; working towards CCNA certification

Computer Skills: C, Oracle SQL, Basic level scripting with Perl and Python, Basic level HTML/HTML5

OS: Windows XP/Vista/7/8/10, Linux –Ubuntu/Debian

Tools: QXDM/QPST, WinDbg, Wireshark/Omnipeek/TI BLE Sniffer, iperf, Chariot, Tping, BTlogging & WiFi logging scripts, ETW tracing, TFS, Ellisys BT protocol analyzer Academic Projects

MS Capstone Project: Design and Development of a Novel Body Sensing System for Childhood Obesity Management

Researched the current body sensing devices, vital sign detectors and recorders.

Studied personal area networks (PAN), body area networks (BAN), wireless sensor networks (WSN), BT & ZigBee

Designed and tested the ‘wearable wireless sensor device’ in the virtual environment.

Worked on connecting the wearable sensor device to a mobile application. Course Projects:

Radio transceiver system model using SIMULINK: A message signal was sent through a Multipath Rician Fading channel, mixed with AWGN noise signal of three power levels; three modulation methods, specifically QPSK, 8PSK, 16QAM were applied in order to transmit, and then retrieve the message at the receiver.

LTE Network Optimization using EDX SignalPro: Investigated the various error scenarios in the uplink/downlink channels; studied optimization characteristics such as capacity, coverage, frequency planning, and power management, Performed SNR measurements and antenna azimuth/tilt configurations on SignalPro. Education

Master of Science in Wireless Communications, National University, San Diego, CA September 2013

Bachelor of Technology in Electrical and Electronics Engineering, JNTU-Hyderabad, India April 2010

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