---
title: "Vijay Varma - Senior Engineer BBU-QA in Bengaluru | Tal"
description: "Meet Vijay Varma, 5G-NR | ORAN | LTE based in Bengaluru. AI stack includes claude code and gemini."
image: "https://tal.club/meet/vijay-varma/share-image"
---

# Vijay Varma on Tal

## Headline

5G\-NR \| ORAN \| LTE

## About

For over a decade, I've lived at the intersection of protocol stacks and real\-world performance, shaping how 4G and 5G networks behave under pressure\. My work spans the full depth of the radio stack — from PHY to NAS — across LTE, 5G\-NR, ORAN \(SA/NSA\), and IoT ecosystems, always anchored in 3GPP specifications\. Where others see logs, I see a story\. Using tools like TM500, Amarisoft, Wireshark, QXDM, and QCAT, I've dissected thousands of traces to surface root causes that aren't obvious — and fix them before they become problems in the field\. My foundation is built on Electronics & Communications Engineering from Jawaharlal Institute of Technology, but the real education has been years of hands\-on RF performance testing and LTE/NR protocol validation — where the spec meets signal, and theory meets antenna\. I don't just ensure compliance\. I ensure confidence — in the components, in the network, and in the teams I work alongside\. Whether collaborating with cross\-functional engineering groups or engaging directly with clients, I bring both technical rigor and clear communication to every delivery\.

## Location

Bengaluru

## AI stack

claude code

gemini

## Work experience

Senior Engineer BBU\-QA at JMA Wireless, May 2024 \- Present · 2 yrs 6 mos, Bengaluru, I architect and develop comprehensive test case suites for end\-to\-end System and Functional Testing of 4G/5G Open RAN deployments\. Test coverage spans the full ORAN functional split architecture — from O\-RU through O\-DU to O\-CU — validating conformance against 3GPP TS 36\.xxx \(LTE\) and 38\.xxx \(NR\) specifications, alongside O\-RAN Alliance WG4/WG5 interface definitions\. In\-Depth Log Analysis — DU \(PHY/MAC\) & CU\-CP \(RRC\) Log analysis is where test engineering transitions from execution to true diagnostic work\. My analysis is concentrated across two critical layers: DU — PHY/MAC Layer: I decode and correlate PHY\-layer indicators including PDSCH/PUSCH scheduling decisions, MCS selection, CQI/RI/PMI reporting, BLER trends, and HARQ process state machines\. At the MAC layer, I analyze scheduling logs to verify DL/UL grant allocation, buffer status reporting \(BSR\), power headroom reports \(PHR\), and logical channel prioritization \(LCP\) behavior\. Slot\-level timing is cross\-correlated between DL/UL assignments and HARQ feedback to identify timing misalignments, missed ACK/NACK processing, or scheduler starvation\. PRACH preamble detection, random access response \(RAR\) windows, and contention resolution procedures are validated during initial attach and handover sequences\. CU\-CP — RRC Layer: I trace RRC signaling message flows — RRCSetup, RRCReconfiguration, RRCRelease, MeasurementReport — against expected 3GPP state machine transitions, verifying procedural correctness at every step\. RRC events are correlated with F1AP and NGAP control plane messages to verify end\-to\-end signaling integrity between the DU, CU\-CP, and 5GC AMF\. Procedure failures are isolated by identifying guard timer expirations, missing acknowledgments, and mismatched transaction IDs across layers\. Measurement configuration and reporting for A3/A5 event\-triggered handover is analyzed to validate threshold settings, hysteresis, and TTT \(Time\-to\-Trigger\) compliance against configured parameters\.

Technical Lead at Tessolve, Jan 2023 \- Apr 2024 · 1 yr 4 mos, Bengaluru, Karnataka, India, Worked on test case development for System and Functional Testing of 5G\-CPE and NR\-Light \(RedCap\)\. Script development \(L1\-System Test cases\) for defined test cases using Keysight TA \(Test Application\) & PRT \(Protocol R&D Toolset\)\. Script creation for L1 features \(CSI, SRS, PDCCH and UCI Multiplexing\)\. Involved in Ref UE testing for different vendor’s gNB configuration for 5G SA FR1 & FR2\. Creation of test scripts to work with Automation framework for test case execution\.

Technical Lead at TechStar Group, Aug 2022 \- Dec 2022 · 5 mos, Chennai, Tamil Nadu, India, Responsible for Validating 5G CAT\-A O\-RU\(SA/NSA\) C\-Plane, U\-plane & S\-Plane messages flow on eCPRI interface with respect to ORAN\-WG4 Specs between RU & DU\. Wireshark traces analysis for SSB\.

Senior Engineer at Reliance Project and Property management services limited, Jun 2018 \- Jul 2022 · 4 yrs 2 mos, Indore, Madhya Pradesh, India, 1\. Functional testing using XCAL of attach procedure, Handover,Throughput debugging, Carrier aggregation in live network\. 2\. Analysis of LTE logs by X\-Cap tool and find out reason for Low DL & UL throughput, Overlapping cell, SINR check\. 3\. SSCVT & Cluster optimization\.

Sr Log Analyzer at FCCI, Jan 2017 \- May 2018 · 1 yr 5 mos, Kuwait City, 1\.LTE UE logs analysis\. 2\.UE logs analysis for features CSFB, CA,MIMO, Handover\. 3\.Involved in LTE testing of the device on live network and capturing logs and analysis it as per Client requirement\. 4\.Network performance improvement after deep analysis of L3 message\.

RF Engineer at Teleysia Network private limited, Dec 2014 \- Dec 2016 · 2 y, Ahemdabad

RF Engineer at Synergie Network private limited, Mar 2012 \- Nov 2014 · 2 y 8 mo, Coimbatore

## Education

Bachelor of Engineering \- BE, Electrical, Electronic and Communications Engineering Technology/Technician, Jawaharlal Institute of Technology

[View the original profile](https://tal.club/meet/vijay-varma)

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