Alejandro G.

WORK HISTORY

EDUCATION

ABOUT ALEJANDRO G.

Experienced LEO Satellite Constellations and 5G/LTE technical lead on End to End design, integration, test, development and optimization of both Cellular and Satellite Networks. Very good understanding of RAN Protocols, PHY/MAC/RRC layers, 3GPP standards, RAN Interface, Functionality and Procedures.• Worked directly with vendors to define/review/test and feedback ICDs. Participated in design and requirements review (PDRs and CDRs), test plans, test procedures, reports and verification methods.• Broad knowledge of 5G/LTE ecosystem: UE, eNodeB/gNodeB, Small Cells, end to end setup and datacollection at Lab and Field; and LEO Satellite ecosystem: Satellite Segment, Ground Network Segment,Gateway Antennas and User Terminals.• Radio Network Design, tuning Tools and mapping tools, optimization and Post processing tools. RF Functionality, cell parameters and Network Performance (KPI) based on System and Field Measurements.• Experienced with TCP/IP optimization. Configuration/Monitoring of Cisco routers and switches used in a Lab environment.• Main LTE features and functionalities tested: Carrier Aggregation, Beamforming TM7 & TM8, 8T8R RRH, MIMO, LTE to GSM/WCDMA/CDMA Handover, CSFB to LTE & IRAT Cell Re-Selection, eCSFB to & eHRPD. FDD (800/1900MHz) to TDD (2.5GHz) X2 & S1 Handover, Traffic Management, Self-Optimizing Networks, ANR, Load Balancing, UplinkCoMP Joint Reception, VoLTE and IMS.• Proficient in Lab measurement instruments like: RF Spectrum analyzer, RF Signal generator, Azimuth ACE Channel emulator and Spirent VR5.• Tools experience: QXDM, QCAT, TEMS, XCAL, XCAP, Atoll iPlanner, Wireshark PCAP and MapInfo. • Software experience: Linux, Perl, Samsung EnodeB tracing (Linux based), Samsung LSM-R Linux based commands, Samsung MME/PGW command line management and Ericsson Moshell.5G NR, LTE, FDD, TDD, E-UTRAN, Samsung, Ericsson, RAN, CDMA, 4G, 3G.Specialties: LTE RAN Systems, lab and field testing, LTE RAN Troubleshooting, RF Optimization and Tunning.