Jiliang (Bill)Wang

CCNA®• CCNP®• M.Eng.

** ******* *****

Richmond Hill, Ontario • L4S 1S6

Cell 647-***-****

adm63z@r.postjobfree.com

Bill is a veteran in mobile communications technology, with 20 years of experience designing, implementing, optimizing and troubleshooting GSM/UMTS/LTE/IMS/VoLTE/VoWiFi/5G NR networks. He has broad-based experience across service providers (Rogers, TELUS Mobility, and Bell Mobility) and vendors (Ericsson, Nokia, Siemens, Huawei, and Blackberry). He also holds a M. Eng. degree in Computer Applications, and CCNA® and CCNP® certificates.

Core Strengths:

Ericsson LTE/UMTS Packet Core Network Elements:EPG&vEPG,SGSN-MME,PCRF,HSS,DNS

Ericsson IMS/VOLTE Network Elements:SBG/P-CSCF,S-CSCF,MTAS,IP WORKS (ENUM,EMA)

Ericsson LTE/NR 5G Wireless Products:eNodeB (LTE),gNodeB (RU/DU/CU,5G NR)

NSN UMTS Core Network Elements:MSS(DX200)&MGW,HLR-FE,SGSN&GGSN

NSN LTE Core Network Elements: MME,SGW/PGW,PCRF

NSN 3G/4G Wireless Products: RNC, Node B(WCDMA/UMTS),eNodeB(LTE)

Huawei 3G/4G Wireless Network production: RNC, Node B(WCDMA/UMTS),eNodeB(LTE)

CISCO LTE Core Network Elements:MME,SGW/PGW (ASR 5000)

Protocols: SS7,SIGTRAN,RANAP,CAMEL,H.248,ISUP,BICC,SIP/SIP-I,DIAMETER,GTP-C/v1/v2,RADIUS,DNS,HTTP,REST,SOAP,JSON,XML

Mobile telecom network analysis tools: Astellia solution (Linux,Oracle,MySQL),Tektronix Geoprobe(Iris), Netscout, Brix, Huawei M2000,TEMS, NEMO,NetAct,Anite,Anritsu,R&S,Spirent

Familiarity with and the ability to apply 3GPP standards 5G Core (AMF,SMF,UPF,AUSF,UDM,NRF etc.),NR gNodeB (CU/DU)

IP-Convergence Network: TCP/IP& UDP/SCTP,OSPF,BGP,HSRP/VRRP,MPLS

Operating system: Linux Red Hat (5.0)/Kernel Scripting, Windows 2008 R2, Windows XP,Windows8

Over 3 years C/C++ Programming experience and familiar with Python,Linux Shell script programming

RELEVANT EXPERIENCE

Ford Motor Company (Previous Blackberry),Ottawa April 2018—Dec 2019

Network Engineer of 5G/LTE/IMS/UMTS Network

Responsible for LTE/IMS/VoLTE/UMTS AT&T Radio Signaling Specification Test for TCU (Telematics Control Unit) using Keysight Anite, Spirent simulator

Responsible for 5G/LTE/UMTS 3GPP TS36.521/TS38.521-1/3 RF/RRM Test for TCU using Anritsu, R&S Simulator

Responsible for 5G/LTE/UMTS 3GPP TS36.523/TS38.523 Protocol Conformance Test for TCU using Anite simulator

Verified the DL/UL throughput for 4X2 MIMO using IPERF application and QXDM Professional Tool

Captured the QXDM log and use QCAT to find the root cause of TCU issues

Familiar with 5G NSA (CUPS)/SA Core Network Architecture,http-based API protocol,E2E call flow as well as 5G NR (EN-DC,DU/CU of gNodeB) etc.

Good knowledge of Cloud-Native in CI/CD, Kubernetes and Containerization as well as experience of Cloud Networking (Openstack)

Ericsson Communication Company Ltd.,Shanghai Jul 2017—Jan 2018

Verification Engineer (EPG System Test)

Responsible for Cloud-based EPG1.5,EPG1.6,EPG1.7(Virtualization&OpenStack Virtual EPG) system test and integration

Troubleshooted Application &Platform issues of vEPG related to various Openstack services such as nova,neutron,cinder etc.

Analyzed the system logs deeply to find the root cause of platform and application issues

Troubleshooted signaling issues on various interfaces such as GX,GY,S11,S4,SGi,S2a/S2b etc.

Responsible for Regression Test such as Robustness,Stability,Configuration&Capacity system testing

Familiar with Ericsson vEPG architecture, system test specification and CPI documents

Familiar with Linux-based Ericsson system test tools (Autott,Dallas,Outline) and test script(Python)

COMsolve Inc., Toronto Oct 2016—Apr 2017

Drive Tester for UMTS/LTE Network

Performed Major Axis drive test across Ontario for Wind mobile LTE network using Keysight NEMO

Collected LTE data session events such as LTE data session handover and CSFB call flow etc.

Collected and Analyzed the downlink and uplink data throughput of LTE network

Rogers Communications Inc., Toronto Jan 2015 – Jul 2015

Network Engineer (User Profile&Packet Core TAC)

Operated and Maintained Rogers GSM/UMTS/LTE PS Network Elements: SGSN/GGSN/MME/SGW/PGW,DNS (Linux)

Upgraded software version of Rogers SGSN/GGSN/MME/SGW/PGW,DNS(Linux)

Upgraded software version of Rogers LTE/UMTS Wireless Network Elements: Ericsson eNodeB,RNC

Troubleshooted UMTS/LTE/IMS Network issues such as KPI failure alarm, Diameter authorization failure etc. using Tektronic network monitoring tool

TELUS Mobility Inc., Toronto Mar 2009 – Sep 2014

Network Specialist (UMTS/LTE/IMS at TELUS Technology Strategy Group)

Troubleshooted IMS call issues(Breakout/Breakin)with TELUS IMS/UMTS CS network and optimized the TELUS IMS/UMTS network using network monitoring tools(Brix,Geoprobe,Astellia)

Troubleshooted CS issues(LUP/MOC/MTC/MMC/CSFB, SMS) and PS issues (RUA/PDP session setup/drop, MMS etc.) existing in TELUS UMTS CS/PS network and optimized TELUS UMTS CS/PS network using Astellia solution and Geoprobe

Troubleshooted PS issues(TAU/EPS Bearer,etc.) with TELUS LTE network and optimized the TELUS LTE network using Netscout

Provided case analysis and solution for issue reported from clients and NRC team as well as technical support for MSO Engineering team as a key staff of TELUS Tier3 technical leadership team

Monitored CS/PS network identifying/resolving ongoing network issue, KPI abnormalities via parameters modification/reconfiguration; ensured network health after network elements upgrade

Independently identified and performed general administrator/engineer tasks (disk array, firmware, event logs, application upgrades, etc.) on over 40 IBM X3550 M3 servers with Linux Red Hat 5.0

Developed, implemented & administrated Astellia Solution (Linux/Red Hat,Oracle/MySQL) and Tektronix Geoprobe (troubleshooting,topology file update etc.)

Developed, tested network services and features such as E911/LBS,MMS,SMS in TELUS UMTS/LTE network

Implemented SS7 SIGTRAN (SCTP,M3UA) test of UMTS network among MSS,SGSN,HLR-FE, STP and RNC before TELUS launched UMTS in 2009

Bell Mobility Inc., Toronto Sept 2008—Mar 2009

UMTS Wireless Network Engineer

Performed Initialization and creation of NSN/Huawei RNC/Node B database including cell site database, IP Routes, VLAN, SIGTRAN database such as SCTP, M3UA, SCCP,RANAP

Implemented Integrated Test of Nokia MSS(DX200),MGW(IPA2800) with NSN RNC and Huawei RNC

Operated, Maintained Nokia-Siemens RNC/Node B, Huawei RNC/Node B

Trained Nokia-Siemens HLR-FE for Bell internal staffs including architecture of HLR-FE, C-NTDB, HLR-FE configuration in Bell Lab.

Nokia-Siemens Mobile, Shanghai, China & Munich, Germany 1997-2007

Trainer & Network Optimization Engineer 2002-2007

“CCS7 Signaling for GSM&GPRS”, ”Core Network Commissioning and OAM”, “Advanced Database Administration”, UMTS System Introduction and System Architecture”, ”UMTS CN OAM (CS&PS)” and “UMTS CN Signaling”, “SIP Introduction”

“Cisco Router & Switch OAM”, Siemens R4 Core Network Products: ”SGSN/GGSN”, ”MSC-Server/MGW”, Siemens 3GPP products such as WiMAX, HSDPA 2002-2003

Analyzed KPI of GSM&GPRS Network

Evaluated network performance (Handover, Call drop, QOS, Traffic Load, Load balance etc.)

Authored text book “Network Optimization of Switching Subsystem” including Case Analysis (Power Measurements, Traffic Measurements, Radio interference, SS7 Parameters, MSC database etc.)

Technical Support Engineer (TAC2) 2000-2002

Tested mobile performance features after system upgrade

Analyzed cases, provided solutions for field service engineers, customers

Service Engineer 1997-2000

Implemented on-site commissioning of GSM&GPRS projects for China Mobile, Unicom Operators

Investigated, managed trouble reports, testing, diagnostics, fault isolation

Lucent Technologies Equipment Co. Ltd., China May 1995–Jun 1997

Develop Engineer

Developed communications software of SLC-240 using BORLAND C/C++ 3.1 and 4.0

Localized SLC-1000 under environment of Solaris 2.4 for X86

EDUCATION

Got trained with cloud-native container-based infrastructure, CI/CD pipeline and tools (Jenkins,Gitlab)

Got understood with Kubernetes, Docker Architecture and familiarity with Kubectl/Docker commands

Xincon Technology College, Toronto - Cisco CCNA/CCNP Certifications

Siemens Training Institute, Munich, Germany - Communications Networks System Specialist

Tong Ji University, Shanghai, China - Master Degree of Engineering in Computer Applications

Shanghai Tie Dao University, Shanghai, China; Bachelor Degree in Computer Engineering

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