Network Design Specialist - ESN RAN & E2E Performance

Flint UK Technology Services
£37,467 - £47,442 a year
Bristol, England
3 days ago

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.
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