Principal Solution Architect

Executive Profile

Ebenezer Kofi

Ashford Dunwoody, Atlanta GA 30319 Cell: 919 491 0285, ebekofi@msn.com

Principal Solution Architect with exceptional proven Achieving track history of leadership in Technology Strategy Definitions, End to End Solution Architecture (3GPP, IMS, LTE, Wi-Fi, WLAN, Cable Labs, OTT, WIMAX,

NGN, SIP, VOIP, SBC, SS7, Small cell, Virtualization , IP/MPLS, H.323)

Experience Summary

  · Software Product Development

  · Software and Network Optimization

  · Solution Architecture & Integration

  · Innovation Fostering and Prototyping (Proof of Concept)

Key Skills

  · 4G/ LTE, VoLTE, M2M, VoWi-Fi, 5G,IMS, Wi-Fi, WLAN, Cable Labs, WIMAX, NGN, SIP, SBC, SS7, Virtualization , IP/MPLS, Mobile ecosystem, Connected Cars, IoT, Wearables .

  · BSS Transformation Programs, Convergent Charging, Billing, Customer Relationship Management Solutions, System Integration and Consulting domain.

  · 3GPP standards/Specifications, W-CDMA , UTRAN, CAMEL, DAS, Small Cells, HSPA, UTRA –TD SCDMA

  · Research, Identifying, Developing , Prototype SDN centric Architecture for mobile Network EPC, IMS, LTE, VOLTE, SDN, SGW, PGW, PCRF, HSS,AAA.

  · BSS/OSS, Evolved Packet Core (EPC), Diameter Signaling Controller (DSC), Cloud Computing , Policy Control & Charging , Network Function Virtualization (NFV), SDN

  · SDN Architecture, Transport, SDN System Integration, Open Flow/Specifications, Network Function Virtualization, Analytics Systems, Big Data.

  · 3G/HSPA, eMBMS ,Backhaul Carrier Wi-Fi, Packet Core, Circuit Switch, Services/Applications, Front haul/C-RAN, Devices/Smartphones

  · Diameter Routing, SS7, Policy Charging, SDM, Traffic Management, Packet inspection, Billing, Service Assurance, QA Test and Measurements

  · Packet and Circuit Switches, MME, SAEGW,DRA,PCRF,CSFB,SRVCC, MGW, MSC-Server, PCF, PDSN, FA/HA, 3GPP-3GPP2 inter-technology roaming (integrated GGSN/FA and/or HA services)

  · VPN, IPSec, L2TP LAC, LNS, GRE Tunneling, Routing, IPv4, IPv6, RIP, OSPFv2, BGP4, Broadcast and Multicast Services (BCMCS),

  · Roaming mechanisms, TAP/RAP, Capacity planning. Layer 2 & Layer 3 switching, STP, VLANs, ACLs, BGP, OSPF, EIGRP, QoS, DMVPN, VRF, BGP

  · Proof of Concept, Vendor evaluation, NGN Business Research & Forecasting, RFP/RFI processing, Quality Control, End to End ATP Testing.

  · IMS Call flow , UE, STB, HSS,P-CSCF,I-CSCF,S-CSCF,AS,IPSEC,HTTP,SIP/RTSP,IGMP/MPEG,IPTV AS, HTTP GET, XML,PHP,HTML

  · GIGABIT/BROADBAND-Wireless, Satellites, FTTX, Home Network, Gigabit Network, DSL, Next Gen PON, MoCA.

  · Cable modem/CMTS, Cable Wi-Fi, DOCSIS, RDK, Set Top Boxes , CCAP/Next Gen Nets, Packet Optical,DWDM,400G/Terabit

  · IETF, Mobile IP, Packet Radio, E-node B, WAN/LAN, VoIP, Software/firmware sizing methodologies (e.g., IFPUG Function Point Counting, COSMIC,

  · Software Requirements Specifications (SRS), Backhaul, enhance Packet core (EPC) Architecture design, System Configurations, System Integrations.

  · CDNs, OTT, Video Storage/Delivery, Multi-Screen Video, Mobile Video, Video Software, Hardware and Services.

  · Carrier Ethernet, IP protocol /Software, MPLS, Routers, VoIP Systems, Cloud/Data Center infrastructure and interconnects.

  · GIGABIT/BROADBAND- Wireless, Satellites, FTTX, Home Network, Gigabit Network, DSL, Next Gen PON, MoCA,

  · Software Defined Radio, OFDM/OFDMA,MIMO,M2M,Femtocells, Self-Organizing Networks, (SON)

  · Ethernet Switching, GTP, PPP, TCP/IP, Ipv4, Ipv6, MPLS, VPN, NAT, IPSec, Diameter, SIP, MAP, Radius

Certifications and Training

  · Architecture and Deployment , Sun ONE Web Server 6.0; Sun ONE Directory Server, iPlanet Enterprise Server ,Site Minder

  · CCND,CCNP,CCVP, Citrix Certified Administrator (CCA), Wireshark Certified Analyst (WCNA),

  · Diameter and Charging in LTE/IMS, Unified Monitoring and Event Management.

  · LTE,OFDM,OFDMA,SC-FDMA,LTE MIMO,TDD & FDD, Frame and Sub frame

  · SAE Architecture , Physical logical and Transport Channels, Bands and Spectrum, User Equipment classes Performance and Specifications, UE Performance level

  · 4G LTE Advance, VoLTE, SRVCC, LTE-U/LAA, Security.

Tools

  · C/C++,Perl, JAVA, Tcl/Tk IMS domain, Win Foil, telnet, FTP, ProComm, CITRIX, UNIX, LINUX, SUN SOLARIS , VB XML, Shell Programming, Web logic

  · Oracle, SAS, SAP, MySQL Database, TV Works Platform Applications, JBOS, WebSphere, Web Servers, BEA Web-Logic, Oracle install and Architecture ASCP, Tivoli

  · JMeter load testing, IMS Test Tool SIP/RTP, Diameter, XSLT, XML, SNMP, HTTP, HTTPS, FTP, SSH, RMI, RPC, JMS, AJAX, DOM, SAX, JAXB, JAXP, SOAP UI

  · Wireshark PCAP, QXDM ,QPST, FTP, ProComm, Wireshark, IXIA ,Test measurements tools, CISCO IOS, Net screen, JnOS, f5, IPS/IDS ,Cisco CME, SAN/NAS, TACACS, DIAMETER, Mobile device managements servers

  · EVMS, IMS and IMP tools for managing programs, TCP/ SNMP, SMPP, Real time Processing, life cycle testing IP, BGP, EIGRP, OSPF, MPLS, VRF, VPNs

  · 802.11, Ethernet, SIP, PPPoX. TCP/IP, HTTP, NAT, IGMP, DNS, PPPoE, DHCP, QoS, Qa-Cafe, J2ME, Java, JNI, Win-Runner, Operating and setting up test systems (IX IA, Spirent, Smart bits, VERI-WAVE

  · Ericsson TEMS, MapInfo Software, PlaNet, Microsoft Project ,Visio, PowerPoint , Budgeting , Presentation

Vendor Certifications/Training and Experience

  · Ericsson, Cisco Systems , Alcatel/Lucent, Motorola, Huawei, HP, Tellabs, Avaya , Oracle/Tekelec , Nortel , IBM, Atrium , Zenos Service Dynamics, BMC, Net cool, Splunk Inc , Actiontec

Professional Experience

Senior Solution Architect

Motorola Solutions Inc.

Sunnyvale CA 95085

September 2009

Present

  · Serve as Customer Facing Architect, Translate customer requirement (RFP), Analyze Network Performances to address smooth transition from Legacy Network to Next Generation and Profitable Network

  · Researching NGN, Identifying, Developing, Prototype SDN, Network Function Virtualization Centric Architecture for Mobile EPC Network, 4G/LTE,IMS, VoLTE, SDN, Cable Network, CDN, SGW, PGW, PCRF, HSS, AAA,

  · Design multi-vendor NFV and NFVI solution, Implementation of Network Datacenter Automation, Involves data call protocols and data connections.

  · Software release compatibility for current and next generation handsets/Devices and newer OTA messages and scanners

  · Provide Quality of Service testing and reporting for the RF drive test and RF engineering teams on the 1X/CDMA, EVDO, and LTE technologies

  · Supporting Voice, Data, Video, Security in LTE including Circuit switch Fallback (CSFB), and SMS over SGs, VoLTE.

  · Responsible for Customer Overall Project Management ,OSS/BSS Transformation Programs, Convergent Charging, Billing, Customer Relationship Management Solutions, System Integration and Consulting domain. Supporting

  · Mobile Wireless Solution, Mobile ecosystem, Connected Cars, IoT, Wearables, VAS , Billing , Prepaid, Postpaid, Roaming, FaceTime, HSS, CSCF, MRF, Security, Cable Video Streaming Solutions,(X1).

  · 3GPP IMS Video Call Solution, 3GPP IMS Presence Solution, 3GPP IMS VoIP Solution, Service Aware Charging Solution, IMS Parlay Gateway Solution, Telephony Soft switch Solution for Fixed Operators, and 3G

  · Lead Engineering Team Responsible for Development, Integration, Deployment, QA lab environment development, achievements of business goals, budget and satisfaction levels

  · Developing Customer Technical solution analysis, Network architecture, Designing, Implementation Strategies, Migration, Performance/Optimization tuning, Integration and Interoperability Testing

  · New technology researching and teaming up with Technical Forums for Inter-operability testing, Quality of service, and Network Performance

  · Provide high level architecture services in both VoIP /Unified Network communications, Network Designing, Network Planning, Video Optimization Gateways, Traffic Offload Gateways, Load balancers

  · Configuring and Maintaining Routers, Switches, Servers, Wireless Aps and Controllers, Advance threat Detection Compliances (BLBA Compliance) HIPAA, PCI, SOX

  · Responsibility includes , Implementing/Testing Quality of Assurance , LTE and Mobile IP Traffic capture and Analysis, Voice Impairments, VoLTE Lab set up Performance and Assessment, VoLTE security setup,

  · Research into Service Availability, Dropped calls arising from SRVCC based on Inter RAT Handovers , Unacceptable Latency, Transport impairments, VoLTE Live Service Assurance, monitored under actual usage and live network,

  · Responsible for Customer Database design, implementation and segmentation, SQL based Query development and data management set up.

Video Architecture

  · Participate and Act as SME for Customer Video Architecture Design, Deploying, Integrating, Testing, and Supporting Customer CDN IPTV, VoIP projects, Network over 300 servers Utilizing JBOS, Oracle Databases, Vanish HTTP

Caching Active MQ messages, Adrenaline VOD streaming, Centralized VOD, Contour Second screen services, TV Connect IPad application, IVR

  · CDN, Ownership of Implementing, Systems Integration and Delivering of all Content on Demand, Live streaming Services, Multi-Screen Video Services, Advertising Services, Content Security Services, Reporting and Analytics

Services to the customer

Principal – Technical Architect (Product Realization Group)

AT&T

Atlanta GA 30342

October 2003

to

September 2009

  · Participated in New Product Designing, Research, End to End Testing, Integrating and Configuration of all new products into ATT national Network.

  · Served as SME for Ericsson circuit and packet switched platforms (MSC, HLR, SGSN, BSC, BTS), Tekelec SS7 signaling platforms (Eagle STP/GFlex EPAP)

  · Provide Quality of Service testing and reporting for the RF drive test and RF engineering teams on the 1X/CDMA, EVDO, and LTE technologies.

  · Act as Subject Matter Expect for Network Equipment installations, Commissioning, troubleshooting, upgrading, and integration.

  · Certifications – Wireless device requirements, Network platforms, Quality of Service – Network Performance Analysis (KPIs), Multi-vendor interoperability Test and Acceptance.

  · Served in various capacities, new product development, Product Trials, Platforms, Handset certifications, Infrastructure and Network operations

  · Supported an Advanced Troubleshooting., Vendor coordination, Network Planning, Next Generation Value added products, Voice and Data network - 2G/3G Network Migrations.

  · Performed highly complex Engineering, Analytical tasks to support AT&T new Products, Implementing E911 , Number portability , CALEA, MSC, BSC,HLR, SGSN, BTS, STP, Pre-paid, Voice mail platform.

  · Vendor/Partner Relationship Building

  · Cloud/Virtualization

  · Test measurement/Labs and End to End Network

  · Regulatory Compliance and Industry Standards

  · Project Management – Multi Product and Projects

  · Hardware/Software, Devices, X1

  · Interfaced with equipment vendors for Interoperable UE Handover , Handover parameters, Engineering Documentations, MOPS ,

  · Designing, Installing, commissioning BSC, BTS, HSDPA/HSUPA/HSOPA, WCDMA, UMTS, Packet Core and Voice Core, UMTS, UTRAN, NODE-B, RNC, SGSN/FLEXI-ISN/GGSN.

  · Provides high level technical support for Nortel, Ericsson, Nokia and Lucent BSC, MSC, GMSC, SGSN, GGSN, Circuit, Packet switches, SGSN, CAMEL, and many more.

  · Designing, Provisioning, Implementation of ATM switching technologies, media gateway platforms, voice aggregation protocols (GR303, SIP, MGCP, H.248), VoATM, VoIP, and SS7.

  · Performance measurements, Development and deployment of CDMA EV-DO, Femto-cell solution that is based on IP Multimedia Subsystem (IMS).Network analyzing, GPRS, GGSN, SGSN, SIG.UMTS PS CSU/DSU - Wireless

Gateways, IP backbone, OEM applications

Senior RF Engineer III

AT&T

Atlanta GA

  · Responsibilities include Radio Frequency Analysis, Design, Implementation, Network Optimization and Enhancement of the Wireless telecommunication Networks.

  · Network Coverage and Capacity, Link budget analysis, System dimensioning, Traffic Analysis, Evaluation and Zoning support, Frequency Planning, Interference Analysis and Optimization.

  · Oversee, Guided and provide training to Associate, Design Engineers, and Project Managers for day to day activities.

  · Communicate RF team budget, milestones and deliverables to project management and implement plans to accomplish the milestones within budget

Nortel Networks

  ·

RTP NC 27709

DIRECTOR OF SYSTEM ENGINEERING

  · Technical project lead for Customer Solution Architects, Software development, Network Integration, Hardware and Software Installations, Documentations, Site architecture management, Data Analysis, Network KPI, budget

and Presentation of status to stake holders.

Senior member of the R&D Engineering Team – tasked for Network integration, Field support, new product introduction and presentation

  · Analyzed business Requirements including Modeling and Planning Analysis, Writing of Functional Requirements/specification documentations,

  · Defining, Researching, New End to End Network architecture and the broadband wireless core interfaces.

  ·

  · Testing Customers Network Performance, KPI measurements and validation, Performance Analysis (Data and IP) system integration.

  · Troubleshooting Network issues (IP QoS, End to End QoS) MIP, SIP/RTP Radius/Diameter and TCP/IP suite

  ·

Implementation of Broadband Network deployment, Radio Network ,Customer RF Network designing, , Performance measurements,

  · Design, Network Testing, Radio Network Planning, Network Rollout, Project Management, In-Building Cellular System

  · Design, Transmission Planning, Radio Network Optimization, Software tool development

  ·

TRAINING & CERTIFICATIONS

  · CCNA, CCNP, NCDE, CCVP, Citrix

  · DOCSISv2.0/v3.0, VOD, STB’s, Content –Broadcastings, LTE, WiMAX, UMTS

  · RF Engineering, RF Propagation, RF Safety, SGSN Pooling, GGSN, RNC –Iu, Advanced LTE, Script creation.

EDUCATION

  · MS. Information Systems, North Carolina state 2005

  · MS Mathematics, KNUST University of Science and Technology 1983-1985

BS Mathematics/ Electronic Engineering, KNUST University of Science and Technology 1980-1983

.

Engineering and Researching of Mobile Messaging (Routing, Security, Advertising, Calculator,) Monitoring and Performance Management Number Portability

Serve as subject Matter Expect for GPRS, GGSN, SGSN, and SIG. UMTS PS CSU/DSU - Wireless Gateways, IP backbone, OEM applications, Location Server, SMSC, WAP, Voice Mail, Unified Messaging, OTA, DMS-MTX,

PDSN, Transport management and Tier II/Tier III engineering support.

June 1993 to October 2003