Reha Yahoo

Responsible for the Design & Optimization for GSM/UMTS/LTE

Determining congested cells and areas by using cell based traffic forecast and traffic map. # Creating polygons by selecting continuous hot spot areas based on different clutter types.
• Design small cells based on available spots and determine the antenna type, azimuths considering the whole cluster and hot spot areas.
• Design small cell configuration. (i.e. pole mount, shroud mount, strand mount and RAN configurations ) Determine exclusion zones (strong macro signal areas) and avoid deploying small cells for better SINR and performance. # Determine HUB locations for C-RAN deployment. Determine HUB size with C-RAN future topologies. (mini, medium, large hub) Determine cabinet count (RBS 6102 MU AC) and required base band count (BB5216) based on total cells and traffic.
• Consider evolution to C-RAN for every polygon and recommend estimated cabinet count for future cabinets. # Locate C-RAN hubs where AAV 3.0 is available for each polygon. # Create small cells in ASSET by using Grid Data Loader.
• Run simulations for small cells with macro sites and prepare coverage reports for polygons. Based on ASSET simulations and live traffic data, provide estimated traffic offload for macro sites in every cluster.
• Optimize ASSET parameter for better coverage and footprint simulations. (Power, different antenna model, antenna azimuth, EDT/MDT change etc.) # Design visits and scoping. # Generated RF designs for new sites and refine designs using full functionality of Asset propagation tool, including network analysis, model tuning and drive test data.
• Creation Small cell, oDAS, NSD, sector-add and event site (COW) creation in ASSET.
• Physical design optimization to improve the RSRP, RSRQ, and SINR. Tuning EDT and MDT. Isolate coverage and quality issues including the terrain issues. Consolidated WCDMA sites with PCS and LTE. This task involved hardware changes like antenna type (single or multi band), the number, size and length of main cable, use of diplexers, use of RRU's, etc. # PCI and TAC planning in Nokia SON tool.
• Updating site/cell level parameters in ASSET based on reginal updates. # Creating RFDS for sites. # Creating RND CIQ for sites. # LTE capacity management for congested cells. # Vo-LTE parameter audit and correction based on Vo-LTE performance. # Vo-LTE initial tuning report submission to the region for approvals. # Vo-LTE drive test analysis (TEMS 15.3.3 & ActixOne), cluster optimization. Vo-LTE initial tuning, parameter & feature correction. # LTE parameter trials to improve performance and leakage. # LTE leakage improvement. # LTE MOCN activation, parameter audit, performance monitoring and improvements.
# LTE call test verification based on CSFB, DL/UL throughput and SINR. Troubleshooting LTE HW alarms, opening trouble tickets. Troubleshooting counter issues on LTE OSS.

AT&T 3G Project (USA): Post Launch Optimization Engineer for Alabama Market 1St, 2nd, 3rd and 4th carrier KPI based optimization (CS Speech, PS R99, PS HSPA drops, RAB establishments, and RRC drop rate, Inter HO, Intra HO, IRAT HO and IRAT CC performances monitored, taking necessary actions) on W11.03. Layer management, balance traffic, troubleshooting HW & SW problems with AMOS. +

RNC level parameter audit and optimization (Cell Overload Protection (COP) feature's parameter updates.) Troubleshooting RSSI issues, checking and calculating attenuation values, and TMA definitions, HW problems or external sources (Jammer, HUB point, transmitting GSM frequency in 3G bands etc.).
• Sending daily KPI and UTRAN reports. (For KPI reports Business Objects used) Checking CE usage, Lack DL/UL power issues, recommending TX, RX extension or new carrier deployment. X
Checking and troubleshooting IUR parameters, external cell, and WCDMA carrier definitions. Inter, Intra and IRAT neighbor optimization.

Running CTR, UETR traces for problematic cells & UE's. Analyzing GPEH files with NEO for problematic cells. Scheduling F-FAX to determine antenna issues. Working in customer premises, consulting operator engineers & being interface of Ericsson post launch team.

Site Planning for 2G & 3G sites by using ASSET in Istanbul East Region. Familiar with network elements (Diplexers, Duplexers, TMA, RRU, Antenna models, ASC, RBS models). Preparing RFDS's for NSB's. Updating RNDCIQ with NSB information's. Familiar with Asset. Attending site surveys and audits. Creating cell database (neighbor relations, frequency planning, parameter settings, and necessary information's).

(TURKEY):

Responsible for Adana & Antalya Regions. Worked with TEMS Cell planner (with nominal plan running predictions giving reports to the manager about lack of RSCP places) Network monitoring during migration P6 to P7. KPI based optimization (CS Speech, CS Video, PS R99, PS HSPA drops, RAB establishments, and RRC drop rate, Inter HO, Intra HO, IRAT HO and IRAT CC performances monitored, taking necessary actions). # Taking RMO (RANOS MOM) dump and implementing Parameter based optimization (exporting RMO dump in NetXplorer, taking parameters, improve network by changing parameters) # Chasing HS drop rates checking HW faults & parameter problems giving recommendations to change HW & parameter(s). Checking CE usages, recommending TX, RX card extensions. Checking RSSI problematic cells, looking for HW faults or external problems (jammer, HUB point, etc). Investigating QUALCOMM chip faults.
• Analyzing synchronization problems working with transmission engineer or BSS engineer for clock way. Making Drive test based optimization (analyzing logs with TEMS Investigation Data Collection 9.1, over drive test result giving recommendations to the customer over hardware & parameters) Checking Availability problems, distributing job to transmission or implementation department. Scheduling new sites' drive tests, Analyze logs files and Site Acceptance. Organizing Cluster drive tests, preparing detailed reports for the managers and customer. (Process logs with Tipp-W & TEMS Route Analyze creating TAB files and importing images to the report) # Running WNCS, exporting results adding necessary neighbors, making optimization overshooting cells by looking WNCS and propagation delays. Running CTR, UETR traces for problematic cells & UE's.
• Preparing site scripts defining startup parameters. # Defining new neighbor relations, deleting unnecessary neighbors based on statistics. TEMS Investigation Data Collection 8.1, neighbor relations, changing

Worked as an intern in OMC Department. Making site visits, upgrading sites & fixing problems with experienced technicians. Having responsible for Mini-Link Manager Program; Changing Mini Links' Sub- hub, solving channel problems. Preparing presentation for managers over 3G-2G. A.S, R&D Department Designed test device which controls SVTS (Smart Vehicle Tracking System) device from serial And parallel ports of computer.