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R&D, Product manager, Launch &Post-Launch, Engineer Test Cases

Seattle, Washington, United States
January 12, 2018

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Victor(Chang Hyen) Chun 425-***-****

***** **** ***** **, *******, WA 98011 Profile Summary

Wireless Communication Professional with comprehensive modem protocol SW Development, Managing team, and Testing experiences in Mobile device manufacturer and Test house. Key Technical Skill

• Debugging of device modem protocol issues through UE / Network log analysis and source code customization.

• Familiar with broad scope of 2G, 3G, LTE, IMS-VoLTE radio test cases from NV-IOT, GCF/PTCRB, and carrier test documents.

• Familiar with carrier validation process for both Launch & Post-Launch.

• Extensive knowledge on 3GPP protocol standards for PHY, MAC, RLC, PDCP, RRC, NAS layer in LTE, HSPA, WCDMA, GSM radio technology.

• Familiar with IMS Architecture and SIP protocol process for IMS related services (VoLTE, RCS, IR94).

• Solid knowledge on mobile device’s system architecture, especially protocol base interface and measurement

/ performance specification.

• Embedded programing skills in C and C++ proven through numerous mobiles. Commercial 3G/4G LTE device projects and network interface card development.

• Experience with source code version management systems such as GIT, Clearcase.

• Experience with Qualcomm, Intel, ST-Ericsson modem and debugging / development tools.

• Familiar with Chipset (Qualcomm, etc), Equipment(R&S, etc) technical issue follow-up process. Managed it for commercial wireless products in pre-test, launch & post-launch stage.

• Familiar with radio protocol test equipment including Agilent 8960, R&S CMU200, CMW500, Anritsu MT8820C, RTD and ANITE SAS/CAS.

• Fast learner, work as cross-function/group collaboration with nice communication.

• Familiar with E2E architecture of each protocol stacks based on 3GPP standard and customer requirements

• Familiar with analysis & review about troubleshooting RCA report according to log/issue analysis

• Bilingual in Korean and English language.

Work Experience

Tech Mahindra America 2017 May – Present

Redmond, Washington Test leader

• Manage as test leader to make sufficient testing progress for each OEMs test devices in timely manner.

• Executed T-Mobile specific certification test ranging from LTE, IMS-VoLTE, WiFi Calling, Carrier Aggregation, RCS, IR94, 4x4 MIMO protocol to data performance test for various OEMs mobile devices.

• Prepared bug reports for the failure test cases and aided OEM clients to debug the issue.

• Performs log analysis and report the varied failed test cases effectively in timely manner.

• Coordinated on-the-job training for the new hires in the team

LG Electronics. R&D 2017 Feb - 2017 Apr

Seoul, Republic of Korea Principal Engineer

• Managed and coordinated the modem protocol SW issues from launch & post-launch in North America products with Qualcomm

LG Electronics Mobile Comm. U.S.A. 2013 Oct – 2017 Feb Bellevue, Washington Principal Engineer

• Managed technical account team of SME to provide collaboration and report about the varied high priority issues effectively in timely manner.

• Successfully managed launch & post-launch for all lined-up Tier (from flagship model to mass/entry models) on timely manner.

• Achieved to keep high ranked in customer quarterly base review based on strong relationship and technical partnership per years.

• Successfully managed and launched of wearable product (watches) and Wi-Fi devices (VR, 360camera, docking camera module). Lead an in-depth product designing of LTE action camera.

• Managed, Interfaced with customer and R&D to manage technology trial process, organize meetings, publish meeting minutes and track down prioritized actions.

• Facilitated smooth LG mobile device production with reviewed locked-in product documents(HLFS/CFS/MTR) to ensure technical and regulatory compliance, and features for all consistency across the products

• Efficiently negotiated product compliance schedule according to customer’s roadmap and planned features based on urgency and prioritized technical needs.

LG Electronics. R&D 1998 May - 2013 Sept

Seoul, Republic of Korea Sr. Staff Engineer

• Managed the team of protocol SW engineers organizing individual’s activities for the project. Coordinated on-the- job training for the new hires in the team.

• Resolved broad range of protocol issues arising from carrier lab and field test, network vendor IOT/IWT and GCF/PTCRB certification test by debugging based on log analysis, preparing and integrating fixes into modem baseband SW.

• Created, implemented and managed LG proprietary protocol patch codes to improve call performance.

• Executed carrier (AT&T and T-Mobile) pre-lab entry test and debugged and resolved all the failed radio test cases prior to Lab entry/RC.

• Created the improvised radio test scenario and executed the test in order to improve the radio/protocol performance of LG mobile devices.

• Participated LG’s the first technical demonstration of HSDPA functionality and performance demonstration at 2005 CTIA. Oversaw technical aspects of the presentation at the exhibition site and performed on-site technical support.

• Managed, evaluated new LTE modem solutions for new prototype product concept. participated in on-site product planning meeting in Finland with Renesas(ex-Nokia modem division)

• Managed, collaborated with Canada carriers(Telus, Bell) for starting UMTS service. Participated in on-site in- depth review meeting for product validation process/certification requirements in Toronto Canada.

• Having rich experience in Qualcomm chipset solutions and chipset roadmap process since 3G UMTS modem introduced. Experienced wide range of chipset products for North America, Europe, Japan and Korea carriers.

• Managed, contributed to achieve the first LG proprietary 3G UMTS product (Generex) launch for Korea carrier

(Korea Telecom)

• Developed and managed LG proprietary ISDN Layer2 LAP-D protocol stack (Q.921 ISDN user-network interface

- Data link layer specification - ITU) and Layer3 Call processing protocol (Q.931 ISDN user-network interface layer 3 specification for basic call control - ITU) on NIC(Network Interface Card) in Voice Mail System for LG Telecom Inc and Handset which is joint co-development project with ETRI(Electronics and Telecommunications Research Institute) sponsored by ministry of information and communication in Korea government. Educational background

• Chung-Ang University, Seoul, Republic of Korea

1998 – BS in computer science and engineering

( LG electronics education scholarship )

Professional reference

• Available upon request

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