Location: Bristol or London Country: UK Rate: £450/day
Network Design Specialist - ESN RAN & E2E Performance
Your key accountabilities within the ESN RAN & E2E Performance domain are:
- Expertise in UE log analysis, Wireshark tracing, and E2E analysis.
- Act as a lead for capacity-related events.
- Identifying the root cause and defining measures to improve underperforming KPIs.
- Analyzing 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.
- Also from:
- ENodeB and CN protocol analysis.
- 3rd Party OTT (Over The Top) protocol traces.
- Capacity data.
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 a particularly deep understanding of design and operation.
- In-depth knowledge of LTE & SIP signaling, PTT (push to talk), SRTP/DTLS troubleshooting & optimization.
- Excellent understanding of Nokia and Ericsson RAN products.
- Good understanding of 3GPP & ETSI specifications.
- Good understanding of DTLS/SRTP protocols.
- 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, process definitions for network performance & optimization of 4G based RAN Macro network.
- Proven experience in defining and understanding KPI definitions, formulas, and measurements of radio networks.
- Able to analyze in depth, drive test logs, Wireshark traces, and protocol analyzer 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 party network/IT suppliers.
- Experience of Nokia RAN.
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