Pedro Xavier

Experience

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  Nokia

  Jan 2011 - Jun 2019

  Network Planning and Optimizaton Engineer

  • Technical knowledge of CS & IMS core products, with hands-on experience on databuild creation for:o Nokia TAS (Telecom Application Server), o Nokia MSS (Mobile Switching Center Server),o Nokia MGW (Multimedia Gateway), o Nokia IMS BGF (Border Gateway Function),o NetNumber Titan (DNS, ENUM, Number Portability),o Radisys MRF.• Basic knowledge on Network Function Virtualization (NFV) architecture, with special focus on the TAS VNF.• Consolidated knowledge in CS and VoLTE/ VoWiFi system architectures.• Consolidated knowledge of SS7, BICC, IUA, SGsAP, SIP, and Diameter protocols.• Some activities concerning the above-mentioned products:o Introduction of NTAS product in green-field networks.o Participation in pilot projects for the VoLTE solution (Deutsche Telekom, Orange, Claro).o Network assessment and planning.o Special features planning as CSFB, SRVCC, Multipoint Iu/A, and Lawful Interception.o Production of Low- and High-Level Design (LLD, HLD) documents.Extra portfolio:• Proactively provided internal workshops within the team for knowledge sharing purposes.• Proactively performed internal non-mandatory trainings as, for example, the Purple Belt certification or The Nokia Leader for aspiring leaders.• Proactively participated in discussions for the improvement of Nokia’s internal software, required for daily activities. Exibir menos

• 

  Celfinet

  Jun 2019 - now

  Core Technical Authority

  • Root-cause finding of analysis of speech-related problems on the VoLTE network (Packet Loss, Jitter, Delay).• VoLTE specific KPI analysis (e.g., Call Setup Time, Cal Drop Rate) and optimization.• Consultancy of core interconnection with other MNOs for industry operator.• Consultancy of 5G core evolution within the multiple cloud possibilities (private, public, hybrid).• VoLTE SRVCC analysis, problem identification and solution.• EPC mobility troubleshooting.• High Level Design Architect: definition of a VoLTE E2E solution.• Production of training courses related to EPC, 5G and IMS elements, call flows, procedures, etc. for the junior colleagues.• Technical authority of the Core team: liaison between different teams (RAN, transmission, automation, sales, HR) when core topics were under discussion.• Project scope identification, resources dimensioning and timeline alignment with costumer Exibir menos