Description
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.