- C, C++,chill, Python, Java programming skills- TCP/IP Network Skills with IP Routing - GTP protocol skills in PGW/SGW/GGSN in the interfaces of the EPC Architecture S11, S1-U, S5, Gn - Experience of 4G EPC-GW Call Contol Developmnet (SGW, PGW) - Experience of IP Security function(IKE, with StrongSwan) in Mobile Network Radio System- GRE(User Traffic) and Mobile IP(Call Control) protocol skills in PDSN in the interfaces of CDMA Network Architecture A10, A11 - Experience of Routing Protocols Development with ZebOS in Core Network IP platform, HMI, RIP, OSPF, MPLS, IS-IS - 4G systems Test Server Development (Call Simulator for CP/UP/Diameter/GTPv2/GTPv1)- Environment (Linux, Git, Gerrit, Jenkins, Clear Case, Jcat, unittest, Auto Test, Lcov, ZebOS, StarOS)
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Senior Software EngineerJ2S Technology Jan 2017 - Present4G EPC Gateway (SGW, PGW) Project in EricssonLG- Expert of GTP protocols (GTPv1, GTPv2, GTPU, GTPC) and 4G system Call Control- Call Simulator (SGW, PGW target) - GTP, Diameter, PMIP, Protocol Trace, AutoTest - SKT, LGT 4G systems maintenance (GTP Protocol Upgrade, Vendor requirements, MMI upgrade, Problem analysis & fix )- Skills (C/C++, chill, Python, Java)- Environment (Linux, Git, Gerrit&Jenkins) -
Senior Research EngineerEricsson-Lg(에릭슨엘지) Jul 2010 - Jun 2015대한민국 경기도 안양Senior Research Engineer, RCI, EricssonLG Aug 2010 ~ Jun 2015Ericsson’s global Project (Agile process): 4G/5G Node B platform, TCP/IP, IPsec, IKE by StrongSwan Plugin, Jcat, Git, unittest, Jenkins, Gerrit, Lcov, Coverity, IPsec Anti Replay, IPsec counter, IKE Rekey by Lifetime, IKE Rekey 4G LTE SGW/PGW for 3 year: GTP protocols (GTPv1, GTPv2, GTPC, GTPU), S-PGW dual System (LGT), GGSN-PGW dual System(SKT), Call Simulator, MMI User Command, Status, Statistics, Alarm, Call Control, Vendor Requirements
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책임연구원Lg-Ericsson Nov 2005 - Jun 2015
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선임연구원Lg-Nortel Jul 2005 - Jun 2010대한민국 경기도 안양Junior Research Engineer, Core SW, LG-Nortel July 2005 ~ Aug 20103G WCDMA GGSN, SGSN for 4 years: GTP protocols (GTPC, GTPU, GTPv1), IP Routing Functions for 3G Systems, Support Global Roaming Data Service GGSN (SKT), MMI User Command, Status, Statistics, Alarm, Call Control, Vendor Requirements -
주임연구원Lg Electronics Mar 2000 - Jun 2005대한민국 경기도 안양Junior Research Engineer, Core Network System, LG Electronics May 2000 ~ July 2005IP Routing with ZebOS for 3 years : Routing Protocols (RIP, OSPF, MPLS, IS-IS), IP Configuration, UI for ZebOS. IMT-2000 System RP (A10, A11) interface for 2 years: PDSN Rp interface ( GRE, Mobile IP protocols), Call control, Test Function, Statistics
Doryun Seok Skills
Doryun Seok Education Details
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Dong-Eui UniversityComputer Engineering
Frequently Asked Questions about Doryun Seok
What company does Doryun Seok work for?
Doryun Seok works for J2s Technology
What is Doryun Seok's role at the current company?
Doryun Seok's current role is Mobile network Software Engineer.
What schools did Doryun Seok attend?
Doryun Seok attended Dong-Eui University.
What skills is Doryun Seok known for?
Doryun Seok has skills like Gtp Protocols, Ip Security, Ip Routing, Tcp/ip Skills, Call Simulator For 4g Systems, Mpls, Java, Python, Gtp Prime, Chill, Diameter.
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