571-***-**** (Land)

703-***-**** (Mobile)

***** ********** **,

Leesburg, VA 20176

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SangWan (“Steve”) JOO

Senior Wireless System Engineer

Performance analysis ~ 4G Network implementation and Operation ~ system test ~ Mobile Device IOT

Experienced, dedicated, and well-organized senior wireless system engineer with nearly fifteen years of progressively responsible system implementation & operation experience in Telecom arena. Strong analytical problem solving and communications skills. Diversified hands-on experience.

Core Competencies

Analysis wireless network

4G Call Flow/ EMM procedure

L2/L3 Switch test

QoS and traffic Management

Management Lab Environment

Performance issue troubleshooting

System integration Testing

Mobile Device IOT

Professional Experience

P31 Technologies, Inc., Fairfax, VA 01/2017- Present

Mobility Solution for Government

Real time video Push to Talk with Samsung Mobile device and wearable device.

Enterprise Mobility Management(EMM) solution

BTIsolutions, Inc., Richardson, TX 12/2007- 12/2016 Client: - Samsung Telecommunications America, Herndon VA

System Engineer

Testing

Performed the Sprint 4G iIOT M2/M3/Sanity Test at Sprint 4G laboratory in Herndon VA. (Physical, MAC, Security, Network)

Performed about Sprint IOT 132 test case include HARQ,Open loop power control, MIMO, HO and Idle mode verification.

End to end testing on end user devices, test cases, technology validation in a lab and production network

Managed IOT Lab environment (LTE RAN equipment, RF Chambers, Test Equipment and related Test Tools)

Developed test procedure with development engineer

Creation, development, and verifying of technical network Method of Procedures (MOPs) for field engineer

Design End-to-end the functionality test scenario of the 4G Femto network including core network such as ACR, AAA, HA, and Femto management platform

Experience working with different vendors Network Equipment from Bridge Water Systems for AAA, Starent for Home Agent and Cisco Systems (for Core and RAN Switch), Azimuth for channel emulator

Operation & Maintenance

Analysis and solving the issues of 3G/4G wireless network over 13,000 NE

Analyze and identify impact of parameter and software feature changes

Systems administration (Windows Server) for Microsoft SQL server

Installed and commissioned NMS system running on a Linux server

Designed Perl Script for automated performance analysis

Network Design and implementation

Network planning of frequency and preamble of Pico RAS for Enterprise solution trial (IBM Watson Research Center Building)

Designed Femto network architecture including IPSec NAT-T VPN to pass through the residential NAT router for the Comcast trial

Designed End-to-end functionality verification test scenario for the Femto network including core networks such as AAA, ACR,HLR and PGW

Process improvement of issue tracking system for multiple teams

Winscom Technologies, Inc., Addison, TX 02/2001- 11/2007

System engineer (A Broadband Equipment Technology Development Company)

Managed the development project, High level Architecture design, conformance and integration Test, Integration Test of Wireless LAN control system

Responsibilities & Achievements:

Managed the development project:

Managed development for the L3 switch system and successfully deployed it

Smart Wireless LAN Control Switches

Developed LVL7 FASTPATH WLAN Module on StrataXGS III 5650x

Patent of Wireless Backhaul solution

L3-GE Switch, IPv6 Switch Design and System Integration Test

Interoperability Test with Cisco Switches

Analysis and Troubleshooting of Network Issues for SBB Japan

Progressed conformance test and IOP test at SBB Lab

High level system design of wire and wireless convergence system and integration test

FPGA / DSP design

Professional Skills

Experience in the design, implementation and operation of Mobility services (LTE)

Network Performance Analysis

L2/L3 switching system conformance and integration/interoperability test

Testing and troubleshooting of wireless network system

Test case design, test environment design, configuration & implementation

Analyze Network Issue

Telecom Technology Trends

Awards/Activities:

STA Silver award

Present treatise on ATM Traffic management at Korea-China ATM Technology Exchange in Beijing University

The Samsung CEO’s R&D Awards Samsung Electronics, Korea,

Skills

Languages: SQL, Perl, AutoIT, Spotfire script

Protocol : 4G call flow / EMM procedure, IPv4/IPv6, TCP, DHCP, OSPF, RIP, IGMP, SNMP, LACP,VLAN, SIP

Tools: Spotfire server, Wavejudge wireless test system, Azimuth channel emulator, Xcal mobile device debugging tool, AX4000 protocol analyzer, SmartBit

Platforms: Samsung eNB,MME,S-GW,P-GW,LSM-R, PCRF,AAA, LSM-C Samsung WiMAX ACR,RAS and Pico system,WiMAX MS device,WiMAX repeater, Cisco router, Bridge Water System AAA. 802.11 a/b/g wireless AP, Layer2/3 switch, Wireless LAN control switch, ATM core switch, UMTS, IAD, VDSL2 DSLAM

Emulators: EPC Emulator, Protocol Emulator (OSPF,RIP,BGP4+), Multicast Routing Emulator for IPTV, Line Emulator

Strengths: Design the analytic tool base on big data.

Good knowledge of network/system.

Education & Tranings

BSEE, Yonsei University, Seoul, Korea (1990)

WiMAX ACR/RAS I&C Samsung Telecommunication America

OFDM and MIMO technology Samsung Telecommunication America

ISO 9001 BTI

5G deep dive Samsung Telecommunication America

Others

US Citizen

References :

Hugh Park

Service Performance Engineer IV

O: 571-***-**** / M: 214-***-****

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