Ashish Barapatre

RAN INFORMATION CONTROL

• Involved in SDD and implementation of ORAN E2 microservice and global E2AP messages between E2 microservice and NEAR-RT RIC

• Implemented RIC functional procedures between E2 microservice and NEAR-RT RIC

• Involved in the implementation of Key Performance Measurement(KPM) and RAN CONTROL (RC) E2SM module at E2 Microservice

• Involved in the implementation of Key Performance Measurement (KPM) and RAN CONTROL (RC) XAPP simulator

Maintenance for Layer-3

• Fixed Layer3 4G and 5G Field issue and defects for customers[Rakuten and Drillisch]

Xn-C TNL address discovery

• Implemented SDD for XN-C Tunnel Discovery as outlined in 38.300. • Executed UL/DL CONFIG RAN TRANSFER Procedure.

Trace Management Feature

• Implemented SDD for the Trace Management Feature as described in 32.421, 32.422, 32.423, and 37.320.

• Designed and implemented the Management and Signaling trace procedure. • Designed and implemented the Immediate MDT feature to support connected mode UE tracing functionality.

Improved Logging Framework

• Designed and implemented a ping-pong(lockless) buffer using shared memory to capture the logs

• Implemented utility to convert command line interface logs to wireshark

Threshold-Based Measurement Gap

• Designed (SDD) and implementation of Threshold-based Measurement Gap

• Set up and release measurement Gap based on the measurement reports of Event A1 and A2 received from UE

UPF PATH Management

• Involved in the implementation of PATH management using GTPU ECHO REQUEST and RESPONSE procedures

Maintenance for Layer-3

• Optimized of memory utilization in CU using written memdump tools

• Optimized control path in CUCP using spp flags in SCTP

• Involved in fixing critical defects in Handover and Reestablishment procedures

Maintenance for Layer-3

• Worked in a team responsible for supporting and fixing Customer (Dish) Defects

UE CONTEXT RELEASE PROCEDURE

• Implementation of F1AP UE Context Release procedure between CU and DU

• Implementation of RRC Connection Release Procedure in NR

Convergence Layer for FSM100XX

• Involved in the Design and Implementation of PHY-MGR, RF-MGR, and CL for FSM10055(MMW) and FSM10056(SUB6)

• Involved in the Design and Implementation of the FAPI Agent to support flexibility in communication between various processes and FSM10056 boards

EMSIM

• Involved in Design and implementation of EMSIM to test PHY and CL for Intel Flexran

Neighbor Relation Table

• Design and Developed of 3G and 4G NRT

• Implementation of Inter-RAT 3G Measurements

CSFB Procedures

• Design and Development of CSFB Procedures towards 3G and 2G with RIM protocol

Citizen Broadband Radio Spectrum

• Design and Development of CBRS () Domain Proxy

ASN Upgrade

• Involved in the upgrading the ASN engine(PASN) to support RRC release 13 and S1AP/X2AP release 15 IEs

• Involved in re-organization and re-structuring of memory pool (SSI Memory) concerning hardware

Maintenance for Layer-3

• Involved in fixing various time-critical bugs concerning customers as SPRINT, Softbank, and JIO

LTE Small Cell Feature Enhancement

• Designed and implemented the RRC Establishment and Reestablishment procedure at the RRC layer as per 36331 spec

• Designed and implemented Inter-eNB X2-based Handover with the LTE small cell protocol stack on Freescale RDB 9131 and commercial UEs

• Integration and Development of security procedures at pdcp [AES and SNOW3G] as per 33401

• Development of SON-ANR, PCI-PLANNING, SON-MRO feature as per 3GPP standards