Won Hyun An

About Won Hyun An

Dedicated and knowledgeable engineering manager with over 20+ years of team managing, network infrastructure and systems integration experience that includes Network Design, E2E Testing & Implementation in Samsung ASN-GW/BS/Device, Huawei BS, Moto BS/CAPC, Tellabs ASN-GW, Starent PDSN/HA, Linux, CISCO Routers/Switches, Sonus Media Gateway, BWS Diameter/RADIUS/HSS/PCRF, CISCO ASR5K(MME, SAE-GW) and ASR9K(ESR).Key Experiences• Managing teams with complicated projects simultaneously and delivering outstanding results.• Designing/implementing LTE lab with Cisco ASR5K/ASR9K, BWS\'s HSS/PCRF and Samsung eNB/Huawei eNB. • Extensive experience in Mobile-WiMAX(802.16e) standard/desing/E2E testing, SimpleIP/MobileIP protocol, RADIUS/DIAMETR, QOS/VOIP/DHCP/DNS/VPN. • Extensive experience in CDMA(3GPP2 A10/A11), SimpleIP/MobileIP, RADIUS/DHCP/DNS, FA/HA performance/redundancy solutions.• Expertise in TCP/IP networks planning, implementation and management with subnets, Virtual Private Networks, VLAN, STP, VTP (802.1q & ISL).• Excellent knowledge of TCP/IP, routing protocols such as RIPv2, IGRP, EIGRP, OSPF, BGP and others such as IP Multicasting, ARP, SMTP, TELNET, SSH, TCP,UDP,SNMP.• Extensive experience in 3COM/Lucent/Sonus Media Gateway.• Experience in Testing and Troubleshooting DS3, T1 and Frame-Relay Circuits.Specialties and Strengths• Organizing and driving team members effectively to accomplish results & goals. • SIP/MIP call signaling protocols(L2/L3), system performance/load balance, IOT, E2E system integration/regression test, QOS(Air/IP) & system design/operation in LTE/Mobile-WiMAX(802.16e)/CDMA(3GPP2) systems.• Cisco routing/switching: RIPv2/OSPF/BGP/IGMP/PIM/HSRP/STP/VLAN/VTP/MPLS.

Experience

1. Sr Engineer System Architecture

   T-Mobile

   Apr 2020 — Present · Reston, VA, US

   4G LTE Core/5GC System

Education

• University of Colorado Boulder

  MS, Telecommunications

  1997 — 1999

• University of Colorado Boulder

  BS, Information Systems

  1994 — 1996

Skills

• Routing
• Tcp/Ip
• Mpls
• Network Design
• Ospf
• Voip
• Lte
• Qos
• Wireless
• Cisco Technologies
• 4g
• Ethernet
• Testing
• Telecommunications
• Wimax
• Ip
• Wireless Networking
• Wifi
• Cdma