Network Design Specialist - RAN & E2E Performance

Three days onsite in Bristol/Start: ASAP/3 months contract + possible extension Inside IR35

Your key accountabilities within the RAN & E2E Performance domain are:

• Experties in UE log analysis, Wire shark tracing and E2E analysis.
• Act as a lead for Capacity related evenets.
• Indentifying 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.

but also from:

• ENodeB and CN protocol analysis.
• 3rd Party OTT (Over The Top) protocol traces.
• Coverage data.
• Capacity data.
• OSS performance data
• Change logs.
• Outline and ensure peer teams capture and deliver RAN Design & Performance team requirements in their deliverables.

Technical Expertise:

• Expert knowledge of UE logs analysis
• Expert understanding of Acuver UE logging tools.
• In depth knowledge of Mobile networks particularly 4G & Public Safety functionality over LTE with particularly deep understanding design and operation.
• In depth knowledge of LTE & SIP signalling, PTT (push to talk), SRTP/DTLS troubleshooting & Optimisation.
• Excellent understanding of Nokia and Ericsson RAN products.
• Good understanding of 3GPP & ETSI specifications.
• Good understding of DTLS/SRTP protols.
• Extensive experience in mobile telecommunications industry in the role of a lead designer with business-critical, high-availability/high-throughput systems and networks.
  • Able to provide technical solutions, processes definition for network performance & optimisation of 4G based RAN Macro network.
  • Proven experience in defining and understanding KPI definitions, formula and measurements of radio networks
  • Able to analyse in depth, drive test logs, wireshark traces and protocol analysers traces for 4G networks
  • Good Knowledge of LTE parameters & timers.
  • Familiarity with test software & devices (Nemo/TEMs/Accuver) & post processing tools (Actix).
  • Experience of working with 3rd parties network/IT Suppliers.
  • Experience of Nokia RAN.