Network Design Specialist - RAN & E2E Performance
Three days onsite in Bristol or London
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:
o UE Application events/L1/L2/L3 information
o 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.
o Able to provide technical solutions, processes definition for network performance & optimisation of 4G based RAN Macro network.
o Proven experience in defining and understanding KPI definitions, formula and measurements of radio networks
o Able to analyse in depth, drive test logs, wireshark traces and protocol analysers traces for 4G networks
o Good Knowledge of LTE parameters & timers.
o Familiarity with test software & devices (Nemo/TEMs/Accuver) & post processing tools (Actix).
o Experience of working with 3rd parties network/IT Suppliers.
o Experience of Nokia RAN.
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