Summary
Overview
Work History
Education
Skills
Accomplishments
Timeline
Generic

Eshant Kumar

Bangalore

Summary

Subject Matter Expert in 5G NTN testing and Cloud-RAN deployment, specializing in satellite communication integration with 5G networks. Proven track record in executing end-to-end test strategies in 5G/4G.

Overview

17
17
years of professional experience

Work History

Subject Matter Expert

Mavenir Systems Pvt Ltd
Bangalore
05.2020 - Current
  • Leading 5G NTN project to integrate satellite communication within 5G network architecture.
  • Defining end-to-end test strategies for NTN, addressing challenges such as Doppler shift, large round-trip times (RTT), and coverage variability.
  • Executing tests on modified PHY/MAC layers (ORAN 8.0 split/16 HARQ process) to support delay-tolerant 5G NR communication.
  • Hands-on experience with tools like the RLS2100 (for delay simulation) and the Simnovus UE Simulator.
  • Worked on multiple 5G/LTE features: 5G NTN Link Adaptation, HARQ disabled, Uplink CA, FPHO, load balancing, VoLTE, neighbor blacklisting, and ANR-based handovers.
  • Extensive knowledge of debugging various issues in L3, L2, and L1 protocol layers.
  • Complete knowledge of E2E cluster bring-up on RHOCP using K8s, deploying different key components in RAN (CMS, Sdaas, CU, DU, PTP).
  • Deploy gNB CU/DU containers using Kubernetes on RHOCP, and handle end-to-end platform setup.
  • Knowledge of debugging various cluster-level issues, POD bring-up failure issues, and Node BIOS/grub settings alignment issues on servers like Dell XR11, Dell R740/750, and SPREE servers.
  • Worked on core network-side features like 5G network slicing, MOCN, and S1-flex.
  • Have core knowledge of the architecture of 5G AMF, UPF, PDN Network, and MME.
  • Debugged issues at the core side, and knowledge of analyzing AMF/MME core pcap.
  • Extensive knowledge of UE simulators, like TM500 and Simnovus. Also worked on other tools like Signal Analyzer, Signal Generator, for debugging noise/interference issues. I have worked on QXDM/QCAT for log analysis of Qualcomm UEs.

Field Application Engineer

Viavi Solutions Pvt Limited
Bangalore
04.2019 - 05.2020
  • Lead Technical Pre-Sales for Viavi TM500, managing client demos, presentations, and solution strategy.
  • Integrate Viavi 5G NR solutions (E500 UE emulator) across Mid Band, High Band Conducted, and OTA TL.
  • In-depth expertise in TM500 hardware bring-up (TM500, HLS Server, BB Server, TeraVM, TMA).

Team Lead

Nokia
Bangalore
05.2014 - 03.2019
  • • Led a cross-functional team of 8 or more engineers in the validation of 5G NSA and LTE features, with end-to-end responsibility for test planning, execution, and team coordination.
  • Acted as Scrum Lead, driving daily stand-ups, sprint planning, JIRA tracking, and hardware planning meetings to ensure timely delivery.
  • Developed and reviewed test cases and scenarios for RRC, Intra-HO, Multiple VLAN, and 5G NS call flows, aligning with 3GPP specs.
  • Brought up 5G test setups, including CU/DU components (BB, BB2, ASIK/ABIL), TM500, and network elements like Airphone, OAM, and L2/L3.
    • Created automation keywords using Python and the Robot Framework, improving test coverage and efficiency.

Senior Test Engineer

L&T Technology Services Ltd.
Bangalore
03.2012 - 04.2014
  • To verify that the UE conformance testing (L2 and L3) is in accordance with 36.523-1 (LTE) for Intel chipsets.
  • Knowledge of Mobile Analyzer, Anite Conformance Toolset, and R&S Project Explorer.
  • To maintain stability and reliability of the existing test cases from the already validated GCF/PTCRB items.

System Test Engineer

Tata Consultancy Services
Bangalore
10.2008 - 05.2012
  • Supporting MSS, MGW, and HLR installation for various operators, like Uninor and Vodafone.
  • Testing 2G Network Simulator for Aeroflex 6113/6103 (June 2011 to May 2012)

Education

Post Graduation Diploma - Artificial Intelligence And Data Science

Indian Institute of Technology
Mumbai
01-2025

B.Tech - Electronics And Communications

SRM Institute of Science & Technology
Chennai
04-2008

Skills

  • 16 years of experience in the telecom domain with a strong focus on 5G NTN testing, 4G/5G RAN testing, and E2E testing with Polaris Core
  • Currently serving as an SME (subject matter expert) for 5G NTN (non-terrestrial network) integration and testing, validating satellite-based 5G communication, including GEO satellites
  • Strong expertise in RAN testing, including 5G SA and NSA Sub-6, and LTE feature validation, as well as EN-DC call procedures
  • Hands-on knowledge of Cloud-RAN deployment using Kubernetes and experience deploying gNodeB applications on RHOCP
  • Knowledge of core network 5G AMF, UPF, and LTE MME
  • Core network feature validation on E2E setup, like 5G network slicing, S1-Flex, and MOCN
  • Extensive knowledge of debugging issues on L3, L2, and L1 protocol stacks

Accomplishments

  • Mavenir Spotlight Award, • Mavenir Excellence Award, • Best Fault Finding 2018

Timeline

Subject Matter Expert

Mavenir Systems Pvt Ltd
05.2020 - Current

Field Application Engineer

Viavi Solutions Pvt Limited
04.2019 - 05.2020

Team Lead

Nokia
05.2014 - 03.2019

Senior Test Engineer

L&T Technology Services Ltd.
03.2012 - 04.2014

System Test Engineer

Tata Consultancy Services
10.2008 - 05.2012

Post Graduation Diploma - Artificial Intelligence And Data Science

Indian Institute of Technology

B.Tech - Electronics And Communications

SRM Institute of Science & Technology

Similar Profiles

CREATE PROFILE
Eshant Kumar