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Network Design Specialist - ESN RAN & E2E Performance

Flint UK Technology Services

Network Design Specialist - ESN RAN & E2E Performance

Salary Not Specified

Flint UK Technology Services, City of Westminster

  • Full time
  • Permanent
  • Onsite working

, 12 Sep | Get your application in now before you're too late!

Closing date: Closing date not specified

job Ref: fc043d99cf1d49989a0609903805ee86

Full Job Description

  • Expertise in UE log analysis, Wire shark tracing and E2E analysis.

  • Act as a lead for Capacity-related events.

  • Identifying the root cause and defining 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 of 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 the 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, formulas 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 with Nokia RAN.