SUMMARY:

• Customer focused, passionate designer with extensive Systems Engineering knowledge in LTE and CDMA Wireless Networks Architectures, Standards, Design, Signaling Protocols, and Requirements. Architect and implementer of robust LTE and CDMA end - to-end solutions in Call Processing, Session and Mobility Management, and O&M for commercial wireless carriers’ cellular networks.
• Innovative, persistent with acumen in seamless inter-working in multi-vendor 4G LTE networks and multi-vendor 3G CDMA networks. Proficient in leading detailed technical interoperability discussions with diverse global partners and third party vendors to successfully integrate network elements in customers’ multi-vendor networks minimizing inter-vendor validation and deployment effort, reducing cycle times and field issues, strengthening vendor relations, increasing market share, and network sharing. Recognized in industry as a Subject Matter Expert (SME) and in driving 3GPP LTE and 3GPP2 CDMA standards.
• 3GPP LTE, 3GPP2 CDMA
• Customer Collaboration
• Feature Design
• Third Party Products Integration
• Standards, Strategies
• 3G, 4G, IP End-to-End Networks’ Architectures. Systems Engineering
• Requirements Capture and Analysis
• Feature Analysis, Design, Solution, Estimation, Functional Allocation.
• Vendors’ Collaboration, Relations, Gap Analysis, Roadmap Alignment.
• Roadmap Development
• Pre and Post Sales Support
• Call Processing, Mobility, Services.
• Architect End-to-End Solutions
• Requirements Conversion into Product Design
• SME Requirements Development, Management, Traceability, Call Flows.
• Network Elements Interoperability, Integration, Joint Specifications.
• Systems, Development Cycle.
• Coach, Knowledge Transfer.
• Drive Product Development
• Review Customer Contractual Test Plans and Test Results
• Troubleshoot Test Failures
• Present, Obtain Acceptance of Total Solution.
• Respond to RFIs, RFPs, Issues, Feature Requests.
• Interface Design, Definition. Protocols, Procedures, Messages, and Parameters Definition, Implementation, Reviews. Best Practices, Technical Excellence.
• Multi-Vendor Total Solutions
• Inter-Vendor Requirements Definition, Interface Analysis, Design, Definition.
• License Proprietary Solutions, Design.
• Standards Development, Knowledge, Implementation.
• Increase Market Share
• Open minded, values diversity and pluralism. Flexible, committed to life-long learning, adapting, sharing. Analytic, with excellent critical thinking, problem solving, oral, written, presentation, people skills. Intelligent risk taker, eyes global competitive advantage.

TECHNICAL SKILLS:

Applications: IBM Rational DOORS, FTR, ClearCase, CQCM, Wireshark, ASN.1, UNIX, MS Office Suite.

PROFESSIONAL EXPERIENCE:

Confidential

Voice over LTE (VoLTE) Engineer

Responsibilities:

• Learning VoLTE, IMS, and SIP. Studying GSMA PRDs IR.92 “IMS Profile for Voice and SMS,” IR.88 “LTE Roaming Guidelines,” and IR.94 “IMS Profile for Conversational Video Service.” Keeping abreast of industry developments in VoLTE.
• Learning Small Cell technology, and 3GPP Release 12 Small Cell enhancements, proposed architectures, challenges and solutions for LTE Small Cells. Keeping abreast of industry developments in Small Cell and HetNets.
• SME of LTE S1AP interface instrumental in integration and deployment of multi-vendor eNodeB - packet core interoperable LTE system, network sharing, and integration of Small Cells with EPC of multiple vendors and multiple operators.
• Studied and analyzed FirstNet Nationwide Network (FNN) Proposal, FirstNet Nationwide Interoperable LTE Public Safety Broadband Network (PSBN) architecture and requirements, and comments of several entities in response to the FNN.
• Keeping abreast of NTIA and FirstNet activities related to the construction and rollout of the LTE PSBN.

Confidential, Arlington Heights, IL

Customer Focus

Responsibilities:

• Thinks of customer first and to win customer satisfaction - designed and implemented robust, flexible, and high quality software system solutions for commercial wireless carriers’ networks needs maintaining compliance with LTE and CDMA standards.
• Engaged with global mobile network operators Verizon Wireless, Sprint, Alltel, Japan’s KDDI, and China Unicom. Solicited and analyzed customer requirements, and converted them into product requirements and solutions. Presented and obtained acceptance of solution from customers. Responded to customer RFIs (Request for Information), RFPs (Request for Proposal), and issues.

Confidential

4G LTE Systems Engineer/Architect

Responsibilities:

• Garnered end-to-end knowledge of the 3GPP LTE system - network architecture, concepts, standards, solutions, procedures, interfaces, and signalling protocols Confidential the control plane level. Translated 3GPP LTE standards into product requirements.
• Authored Concept Design, end-to-end Call Flows, designed Call Processing, Session and Mobility Management, and O&M features, defined Database Objects, Parameters, and Timers, and developed system and network element level (eNodeB, MME) requirements Confidential the message and parameter level for KDDI and China Mobile features for 5 LTE software releases facilitating KDDI’s commercial deployment of its LTE network per plan. Completed traceability to customer requirements, and on time technical reviews of peers as well as my deliverables soliciting comments from all impacted communities.
• Assisted Test Teams in comprehension of LTE features’ solution and requirements, reviewed contractual Test Suites and Test Results, and analyzed Lab Logs to troubleshoot failed test cases and isolate test failures to complete System Test on time.
• Assessed CRs incorporated into each released version of the 3GPP LTE S1AP standard (LTE Release 8.5.0 - Release 9.6.0). Recommended to management whether or not and in which Confidential LTE release to implement the CRs to meet customer requirements, and remain competitive and in compliance with the standard and Confidential roadmap.
• Collaborated with Hitachi and NEC - documented agreed upon eNodeB and MME behaviours for successful interoperability.
• Enabled successful integration of Confidential eNodeB with Confidential MME and packet core network for China Mobile, Confidential eNodeB with Hitachi MME and packet core network for KDDI, and Confidential eNodeB with NEC eNodeB for KDDI allowing KDDI to commercially deploy interoperable multi-vendor LTE system per plan.
• Generated Statement of Compliance to each released version of the 3GPP LTE standard for the RAN3 Technical Specifications “TS 36.300 Stage 2 Overall Description” and “TS 36.413 Stage 3 S1 Application Protocol” for customers’ and Market Teams’ consumption, presenting capabilities of the Confidential LTE product line to win customer business.

Confidential

3G CDMA Systems Engineer/Architect

Responsibilities:

• Used in-depth end-to-end knowledge of the CDMA architecture to design Call Processing and O&M features for customers' dozen software releases with focus on RAN and core integration, and interoperability of Confidential CDMA system with other vendors’ CDMA systems. Knowledge and implementation of the CDMA standards.
• Held strategy discussions, and continually provided technical expertise to Product Management enabling them to respond to customers, partners, and vendors, and in development of Feature Roadmap for IOS product line to remain competitive and in compliance with IOS standard. Provided effort estimate for customers’ feature requests and in licensing A1 SICD to vendors.
• Assisted Test Teams in comprehension of feature operation and requirements, IOS A1 Interface SICD, and Joint Confidential -Vendor Specific Compliance and Implementation Documents, and advised them on resolution of interoperability issues and failed test cases to complete System Test and Inter-Vendor Verification and Validation on time.
• Drove requirements and design of RAN and MSC, and facilitated development on time in line with solution and requirements.
• Provided pre-sale and post sale support to Market Teams enabling them to respond to customer issues and revenue generation.
• Designed detailed definition of the CDMA MSC-BS IOS A1 Interface in the System Interface Control Document (SICD) on message, element, and bit level - considered as “Bible” of the A1 Interface by customers, partners, and Motorolans worldwide. Licensed the SICD to third party partners and vendors generating recurring revenue for Confidential .
• Stepped up, architected and implemented RAN and core interoperability solution for introduction and deployment of MEID - solving a critical Verizon Wireless’s business and wireless industry impacting issue due to ESN exhaustion. Presented and sought acceptance of solution from all vendors participating in Verizon Wireless led forum, and from CDMA standards body.
• Designed and implemented an exclusive solution for deployment of Wireless Priority Service (WPS) over commercial CDMA networks - U.S. Government’s voice service in which radio and network resources were allocated to calls, avoiding contention between consumer and Government traffic during peak times, based on key criteria including priority assigned to Government officials. Presented and obtained acceptance of solution from Government, its contractors and consultants, and Nortel.
• Led face-to-face detailed requirements, design, and end-to-end implementation discussions with partners and vendors of CDMA systems to develop total solutions for common customers. Resolved complex network element interoperability issues through detailed technical investigation and analysis.
• SME of the IOS A1 interface recognized in industry by 3GPP2 TSG-A, partners, vendors, and Motorolans worldwide.
• Created joint Confidential -Nortel MSC-BS Interface Compliance and Implementation Document on per 3GPP2 CDMA standard release basis - considered as an implementation, test, and arbitration document by Confidential, Nortel, and Sprint.
• Created joint Confidential -Alcatel-Shanghai Bell MSC-BS Interface Compliance and Implementation Document on per Confidential -Alcatel-Shanghai Bell CDMA system release basis - considered as an implementation and test document by both companies.
• Knowledge of CDMA core network architecture, CN MSC/VLR, HLR, SMC, Short Message Service (SMS), Location Based Services (LBS), and IS-41 procedures, signalling protocols, and Call Flows Confidential the message and parameter level.
• Knowledgeable in SS7 SCCP protocol, CDMA RAN IS-95 and IS-2000 interfaces and corresponding Layer 3 protocols.
• Resolved interworking issues from lab and commercial networks enabling handoffs and interoperability between Confidential CDMA system and CDMA systems of Nortel, Lucent, NEC, Hitachi, Mercury, Alcatel-Shanghai Bell, Huawei, and ZTE.
• Conducted classes in IOS A1 Interface for members of CDMA Systems Engineering department.
• Developed and tested fault management features for the Confidential iDEN wireless system ( 3).
• 15 years of interoperability and integration expertise in commercial multi-vendor cellular networks employing open interfaces.
• Extensively collaborated, coached, influenced, and led Nortel Networks and Alcatel-Shanghai Bell teams. Defined system requirements and interfaces, and provided to Nortel, Alcatel-Shanghai Bell, NEC, Hitachi, and Mercury for implementation.
• Major technical contributor, for a decade, to the success of Confidential CDMA IOS product line, and Confidential -Nortel CDMA IOS system as commended by Chief Marketing Manager, Nortel Networks, with increased market share for both companies.

Confidential, Naperville, IL

Responsibilities:

• Developed and tested terminal maintenance features for the Confidential &T 5ESS international wireline system.