Tamás Lietavec

-validate & tune parameters of the SON algorithm -propose product improvements (higher accuracy of the geospatial model, enhanced UX and customisation) -troubleshoot provisioning process of vendors (Nokia, Huawei, Ericsson, ZTE) -analyse and visualise large data sets -present the effect of parameter changes on the algorithm -prepare regular, ad-hoc reports and dashboards (MySQL, Vertica, Tableau, Grafana, MapInfo) -handle JIRA tickets, support R&D activities, Agile methodology -test product features

- carry out daily KPI checks of 2G/3G/4G cells in area of responsibility - analyze tendencies of KPIs by observing component counters in ZTE EMS and SQL query building - troubleshoot problems with help of trace analysis (RCT), ZTE Netmax and counters - adjust tilts and update neighbor relations to improve performance - follow up changes in KPIs and counters after introduction of new features and major software release updates - prepare KML files in order to visualize useful indicators in Google Earth

- adjust configuration of DCS layer to ease spectrum reuse and improve LTE performance in the 1800 band - troubleshoot 2G and 3G cells that were adversely affected by LTE deployment - radio network planning of the UMTS 900 layer - eliminate unnecessary HOs in 2G network - replanning of UMTS 2100 cells to improve performance - analyse drive tests (ROMES, TEMS, SwissQual) using Actix - report generation (benchmark & ad-hoc) - carry out tests of Aircom's Advantage module - handle customer complaints

- map NSN BSS parameters operating in the network of customer into Huawei BSS parameters (e.g.: handover, power control, 2G-3G interworking) in order to prepare configuration settings used during swap project - carry out tests related to algorithm testing (test case preparation, maintenance terminal operation, signalling trace analysis) - evaluate DT measurement data, report preparation - oversee performance of drive test teams, remote support

- investigate RAN sharing scenarios - deliver high level plan of the shared network - prepare study as input information for future project implementation

- radio network planning in multi-vendor environment (2G: NSN, Ericsson; 3G: Ericsson) - site surveys, site selection - initial cell design and tuning - coverage and capacity planning - network performance analysis - cell parameter optimization - frequency planning, neighbour planning - drive test measurement analysis, troubleshooting - handling of customer complaints

- Patch antenna design - Research on dielectric cover effects on radiation parameters

Radio Wave Propagation, Radio Network Planning, Satellite Signal Processing