NR, LTE, NTN, CatM and NB-IOT Modem L2 Development

Architecture Design, Development and Verification • REL12 Features • CA issue debugging and Verification

Architecture Design and Development • REL10 LTE UE MAC.• REL10 LTE L1 Carrier Aggregation.• REL10 LTE eICIC.

Architecture Design and Development • REL10 LTE UE MAC.• REL10 LTE L1 Carrier Aggregation.• LTE Modem Interface and Vendor Android's Radio Interface Layer (RIL)Issue Analysis and Bug fixing• Identify the Optimization and gap in LTE UMAC and LMAC.• Bug identification and log analysis for MAC.• Issue analysis for 10776 AT&T and PCT for of LTE RRC, L2 and L1LTE AS Issue fixing, Analysis for conformance testing (10776 AT&T and PCT).•Debugging L2/L3… Show more Architecture Design and Development • REL10 LTE UE MAC.• REL10 LTE L1 Carrier Aggregation.• LTE Modem Interface and Vendor Android's Radio Interface Layer (RIL)Issue Analysis and Bug fixing• Identify the Optimization and gap in LTE UMAC and LMAC.• Bug identification and log analysis for MAC.• Issue analysis for 10776 AT&T and PCT for of LTE RRC, L2 and L1LTE AS Issue fixing, Analysis for conformance testing (10776 AT&T and PCT).•Debugging L2/L3 related issues, fixing those issues, build code and delivering on time.•Performed onsite debugging and work closely with testing team.3gpp Standard Forum Contribution.Follow up the 3gpp release 11 changes related to the following• LTE L2 MAC• TDD-CALTE AS Issue fixing, Analysis for conformance testing (10776 AT&T and PCT). •Debugging L2/L3 related issues, fixing those issues, build code and delivering on time. •Performed onsite debugging and work closely with testing team.Hands-on on the following equipment •Anritsu MD 8430A, Rohde & Schwarz CMW500, Spirent 8100, Anite 9000 mobile tester Accelerator. Show less

Understanding of the CDMA technology (CDMA2000 1xRTT, EVDO) L2 MAC and L3 layer. Analysis of CDMA issue for the L3 layer.

Modules responsible for: LTE L1 MACLINUX Kernel Device Driver Programming on PowerPC/ Cavium Board• Handled LTE L1 MAC layer design and porting it to kernel space & testing it on PowerPC and Cavium based evaluation boards.• Designed and developed the complete LTE L1 MAC layer. Involved in the porting of all Layers 2 & 3 modules to PowerPC and Cavium based evaluation boards. Actively participated in the Design review of the LTE Stack and NAS layer porting into Linux kernel space.

Modules responsible for: LTE UE MAC • Worked on the 3GPP Release 8 MAC specification for functional and design documentsHandled the following LTE UE MAC layer functionalities from Algorithm design to development • HARQ, Random Access procedure, Multiplexing and Demultiplexing, Scheduling Request, Logical Channel prioritization (LCP), DRX procedure for connected mode, Semi-persistent scheduling, RLC to MAC Interface, PHY to MAC Interface. • Prepared and Supported the LTE… Show more Modules responsible for: LTE UE MAC • Worked on the 3GPP Release 8 MAC specification for functional and design documentsHandled the following LTE UE MAC layer functionalities from Algorithm design to development • HARQ, Random Access procedure, Multiplexing and Demultiplexing, Scheduling Request, Logical Channel prioritization (LCP), DRX procedure for connected mode, Semi-persistent scheduling, RLC to MAC Interface, PHY to MAC Interface. • Prepared and Supported the LTE UE MAC for customer requirements. • Involved in the Integration of all Layer 2& 3 modules: • Actively participated in the Design review and Code review of the RLC, PDCP, RRC and NAS. Partially involved in the development of RLC, PDCP, RRC and NAS.LTE Throughput & Performance Measurement :• Performed the Latency measurement for the Data path in both UL & DL for all the layers from PDCP, RLC & MAC. Also have performed the throughput measurement for all the layers from PDCP, RLC & MAC for both UL & DL for different speeds and different packet size.LTE End to End Testing: • Tested the complete UE under the End to End with the entire network component like MME, S-GW, P-GW and HSS. Have simulated triple play - VOIP, UL&DL Video, and Data traffic using • SMARTBITS & IPERF in the End to End network to test the UE for various speeds. Show less