Spearhead Fixed Wireless Access deployment using open-RAN with CBRS, 700 MHz, mmWave. In charge of the following areas• RF planning and link budget design• 5G deployment using open RAN migration• vEPC and 5GC migration• Transport network design (fiber, microwave, and metro ethernet)• Datacenter and NOC operation (redundancy and efficiency) • RAN network design, deployment• Virtualization and Cloud migration• Contract negotiation and operation budget planning• RFP and business development• Private LTE, WiFi and PtP deployment

• Manage engineering, network operation, IT and site acquisition team• In charge of technology roadmaps and network migration planning• Integrated IMS, TAS for VOLTE deployment• Implemented Geolocation redundancy, Hot Standby and Clustering to improve network availability • Integrated E911 over VoIP network • Vendor management, contract negotiation and RFP• Identified network security vulnerbility and implemented network security appliance (DDos, VPN and network encryptions) • Implemented Tier2 technical support system to better support sales and customer care team• Developed and managed CSIM, USIM, ISIM and MMSS profiles• Implemented and integrated SIM OTA process• Maintained Lucent 5ESS, ECP, APs, OMP, SS7 Link Node, translation and dialplans• Deployed Media Gateway to convert TDM to VoIP for long distance service

• Spearheaded 4G LTE (RAN, IP transport and Core EPC) network deployment • Implemented Credit Control with OCS system to meter data usage• Implemented Diameter Routing Agent (DRA) to improve diameter peers functionality• Led network operation team on day to day maintenace• Migrated to high capacity and low latency licensed microwave to increase transport capacity and reduce OPEX • Migrated standalone servers with VMWare and Cloud based to increase availability and scalability• Designed and launched WiFi network in multiple location throughout Buffalo NY• Implemented voice and data roaming to improve end user experience• Launched network monitoring service to improve network outage notification • Migrated from SS7 to SIGTRAN signaling to reduce interconnect cost• Launched Asterisk FreePBX and A2Billing

• Evaluated technologies to strengthen overall network performance and customer experience• Provided strategic and technical directions to meet the long term business goals• Managed company’s spectrum portfolio and spectrum forecasting• Led Interoperability testing across different platforms• Led End to End protocol and performance testing• Contributor for CDG/3GPP2 standard group on CDMA/LTE standards and specifications• Evaluate Small Cell and Wi-Fi solution (2.0 and super WiFi) for data offload• Led studied on Interference (3.5 GHz, 700MHz, PCS, AWS, WCS, Co/Adjacent Channel)• Microwave Design and AWS Spectrum Clearing• Managed FCC regulatory and compliacy• Vendor management. (ALU, Huawei and Ericsson)• Planned and Implemented 4G LTE RAN• Managed and Negotiated budget planning and forecasting on network swapout• Managed technology roadmaps such as FE, RLIC, EVRC-B and 1x Advance • Defined and standardized network translations/parameters and KPIs performance metrics• Developed lab testing procedures for software feature validation• Evaluated and Reduced outbound roaming by applied various network solutions (i.e. CIQ, Location database for roamer)

• Network planning and optimization (Alcatel Lucent network)• Developed network monitoring metrics and KPIs to reduce downtime and promptly identify network issues• Developed In-house trending and network performance statistic tools (Database + Web UI)• Automated network data-fill with scripting to improve accuracy and reduce labor hours• Developed GIS mapping tool using Google API, PHP, ASP.NET C#, JavaScript to map varies network layers to help network optimization and RF performance• Developed and implemented network monitoring tool using Lucent PCMD, ROP and SM logs• Evaluated and recommended Lucent features to improve network performance and maximize capacity• Led special event planning (Cell site on wheel and repeater deployment)• Designed and Deployed LNA, Repeater, In-building DAS system

• Designed and Optimized CDMA IS95A/B/IS2000/EVDO air interface for Lucent voice/data wireless network• Optimized RF parameters for Lucent Flexent Autoplex BTS (Modular, Micro cell and DBS)• Analyzed and monitored network traffic and capacity (PP, WC, CE, Power, Paging Channel Occupancy, Access Channel occupancy)• Monitored and resolved wireless network performance issues (call blocks, setup fails, call drops, handoff)• Implemented IS-41 Inter-MSC Hard Handoff• Implemented ATM inter-MSC Handoff and Inter-Band inter-MSC Hard Handoff• PN planning, Neighbor list and Searcher Window Size tuning• Implemented and Optimized cell extenders• Implemented Multi-carriers optimization (RTD, IFHOTI and MPIFHO)• Led Coverage Planning and In-building Coverage solution

• Supported hardware and software team on design In-house Siemens dual mode CDMA1xRTT, GSM/GPRS mobile terminal for US Market• Analyzed and compared GPRS vs. EDGE protocol stacks performance• Performed comparative studies of CDMA200 1xRTT and GSM GPRS high speed packet data• Analyzed the migration path for GSM to W-CDMA and UMTS

• Acquired skills in CDMA data network optimization and performance analysis• Gained knowledge of CDMA IS95A/B data network architecture implementation for packet data calls, asynchronous data calls and web-browser calls.• Supported software team on developing NeoPoint DataLogger for CDMA Packet Mode real-time data collection tool• Supervised and organized Carrier Wave drive test for over 150 Sprint sites in San Diego marketNetwork Planning and Design for Sprint PCS Inland Empire Market• Conducted RF propagation models tuning using PlanetdB with CW data