LTE Test Engineer
Resume:
571-***-**** (Land)
703-***-**** (Mobile)
Leesburg, VA 20176
***********@*****.***
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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