Zeeshan Abbas

Purpose: To verify the latest Qualcomm chipsets (SDX-75, SDX-70, SDX-65, SDX-60) on multiple Release 15 & 16 features, evaluating different throughput scenarios and KPIs

• Analyzed parameters such as MCS, modulation, and scheduled throughput
• Conducted throughput testing with multiple MIMO configurations
• Implemented S-cell addition and activation for up to 5 carriers
• Tested throughput with various band combinations
• Worked on CQI, RI, and PMI reporting
• Monitored RLC/PDCP packet drops during throughput analysis
• Evaluated conditions including RSSP, RSRQ, SNR, CRC errors, and BLER
• Investigated throughput failure issues, identifying causes at PDCP (out-of-sequence) and RLC (RLF failure)
• Collected detailed throughput data for UL physical layer, DL MAC layer, and physical layer metrics like BLER, CRC, scheduling rate, and ACK throughput
• Analyzed in-app logs, including app throughput, Stevens’s graph, throughput graph, RTT, window scaling, retransmission, and duplicate ACK
• Diagnosed modem log errors related to RSSI, RSRP, RSRQ, CQI, RLF fluctuations, PDCP packet drops, MCS, and RBs
• Monitored network capacity and performance, resolving complex network problems
• Conducted application UE log analysis and maintained a thorough understanding of 5G architecture and call flows.

Purpose: To test chipsets like Xmm-7660 and Xmm-7560 integrated into Intel laptops, delivered to customers such as Lenovo, HP, and Dell

• Worked on MAC HARQ, RACH applications including initial access, handover, re-establishment, and sync-off
• Verified RV & NDI in the MAC layer
• Managed adaptive sync and non-adaptive sync processes
• Evaluated Transmission Modes (1-10) and the purpose of DCI
• Conducted PDCCH and PDSCH allocation based on common and UE-specific search spaces, and RBGs
• Identified CRC errors at the physical layer
• Oversaw layer mapping from the physical layer to precoding blocks
• Mapped virtual ports (0-22) to RF antennas, selecting appropriate MIMO configurations
• Managed test system resources to meet quality objectives and cost estimates
• Created test plans, scripts, and use cases to support testing objectives
• Provided solutions to technical problems and technical advice to enhance engineering practices.

Purpose: To verify various build releases for different customers, focusing on L1, L2, and L3 stack verification

• Detailed the attach procedure, including cell selection, RRC connection, authentication, security, and bearer creation
• Reviewed, evaluated, and identified testability requirements
• Created comprehensive test plans, scripts, and use cases
• Provided solutions to technical problems and advised on improving engineering practices
• Tested and troubleshot network issues, ensuring quality and reliability.