DAS IBS design Engineer
ATT
مجموع سنوات الخبرة :25 years, 6 أشهر
• Review /critic designs and commission process reports submitted by other vendors, and suggest fixing.
• Present final design version with a RAN Optimization plan to RAN Manager, to secure his approval.
• Train /coach junior Engineers on iBWave, and other RF topics
* Site visits fro design feasibility, and implementation validation.
• Designed 2 venues; Kansas Speedway, and UNLV stadium (RSCP -65 for 90%, EcIo -8 for 90%, Best Server almost even % among sectors; SHO 80% for >5dB. LTE RSRP, RSRQ are equivalent parameters, but at different levels, to RSCP, and EcIo
• Foot print Optimization and improve sector Isolation of TCU Stadium outdoor DAS in Dallas Fortworth, TX.
• DAS parameters optimization and supervising Shakedown and drive test of TSU outdoor DAS, in San Marcos, TX as well as Interference mitigation (with Public Safety).
• Assess / Design in Building DAS systems using iBwave. Examine and analyze the collected CW and on Call Test Data and validate it for post processing. Deliver equipment list, Link Budget, coverage, Handover plots.
• Post Process the RF Collected RF Test Data using G_station Software, and report on the bad KPI indicators such as UE Tx % of high values, Low Ec /Io or RSRQ & CQI (for LTE), poor RSCP, or ( RSRP & RNTP for LTE) for no dominant server (pilot pollution), poor SIR for UMTS or HII (for LTE), or poor isolation (RF bleeding, sectors interleaving).
• Diagnose the poor performance Integrity or retain-ability KPI (for served technologies) and suggest changes in network parameters such as neighbor list add/remove sectors, (for UMTS UE Tx power, SHO Add/replace/Remove Thresholds and Trigger Timers), Antenna tilting / orientation, etc. to improve KPI.
• For RF Design: Propagation Model calibration, Network sizing (number of sectors) based on anticipated offered traffic load & Blocking rate. Ensure that no IM products expected when we have multi-sectors, or multi-systems or operators sharing a DAS backbone. Interference analysis and mitigation, RF Human Exposure calculations (FCC B. 65, or Industry Canada Code 6).
• Lead Engineer for RF test data analysis of Wide Band (137 Mhz -2700 Mhz covering LMR, UMTS, LTE, CDMA, GSM, iDEN, and WiFi) served on Indoor IBS DAS of WMATA project using Actix and Agilent 6474 (JDSU) SW tools.
• Post process using Actix RF test data, and Plot on MapInfo the KPI parameters such as UE Tx Pwr, Ec/No, RCSP_0, Sc_0 SIR, # of active pilots, etc. for UMTS/ LTE.
• Identifying performance problems, and conclude if it stem from the carrier Macro sites side or DAS system side. Suggest specific network parameter alignment to resolve any KPI issue, and order walk retesting after implementing the alignment.
WiMax 3G- RF network design Engineer, for 60 sites in Seattle Area. That involves link budget, cell site evaluation and zoning hearing, PN Code planning, traffic analysis/modeling, interference inter-modulation analysis for co-location, develop Search rings, and network sizing
BSEE telecommunications Major. with emphasis on RF propagation.