RAN Engineer in City of Westminster

• Validate 5G and 5+ design - via UE logs analysis and E2E tracing - develop action plan for performance uplift via parameter or feature optimisation - root cause of performance degradation, either from Oss trends, UE logs, crowd source data or other data sources.
• Conduct feature and or parameter optimisation trials for 4G/5G/5G+ RAN vendors (Nokia and Ericsson) and assess outcomes, quantify gains and impacts to wider network services.
• 5G Interworking with 4G, 5G SA, NSA.
• Own and drive improvement in all factors impacting Performance & reporting with the goal of providing optimal Customer Experience.
• Exceptional understanding of network performance trends with a view of rebase lining KPIs.
• Identifying the root cause and define measures to improve underperforming KPIs.
• Analysing drive test logs and Network protocol traces for underperformance & defects in ESN PTT over SRTP.
• Investigate detected and reported Systematic issues within this element of the ESN Service.
• Performance root cause analysis using multiple sources of data primarily from: + UE Application events/L1/L2/L3 information + Drive Test UE logs/Wireshark covering OSI L1-L7.
• Stakeholder management - work with key SMEs to understand the root cause.
  Expert knowledge of UE logs analysis
• Expert level hands-on experience in 5G and 5G+ investigations, parameter optimisations and E2E Investigations.
• Expert understanding of E2E 4G,5G, VoNR, SA, NSA, Slicing architectures and design.
• Expert understanding of Nokia and Ericsson vendor
• Expert in Wireshark, TEMS, Accuver, Nokia and Ericsson eNB/gNB logging systems, tracing, and analysis.
• In depth knowledge of Mobile networks particularly 4G/5G & Public Safety functionality over LTE/5G+ with particularly deep understanding of network design, performance, and optimisation.
• In depth knowledge of 5G,5G+, LTE & SIP signalling, PTT (push to talk), SRTP/DTLS troubleshooting & Optimisation.
• Good understanding of 3GPP & ETSI specifications.
• Good understanding of DTLS/SRTP protocol.

PREFFERRED:

• Knowledge of multiple vendor products including Nokia and Ericsson.
• Knowledge of industry best practice methodologies for analysing, defining and documenting the link between input business requirements and output technical solutions.
• Understanding of project management techniques and tools.
• Experience of managing relationships with suppliers and third parties, of product/feature selection and of delivering those products into a production environment.
• Experience of working with LTE/5G Commercial network based Public Safety solutions.