Network Design Specialist - ESN RAN & E2E Performance
25 days ago
London
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, • ENodeB and CN protocol analysis., • 3rd Party OTT (Over The Top) protocol traces., • Coverage data., • Capacity data., • OSS performance data, • Change logs., • 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.