Chiranjeevi Dakuri
Engineer
Hyderabad,Telangana
Summary
- 13+ years of Experience on 5G/LTE UE Modem, eNodeB/gNB, Protocol Stack Testing for 5G-NR, NSA, SA, LTE, VoLTE, L3(RRC), L2(MAC/RLC/PDCP), L1 Physical layer
- Hands-on experience in executing various test cases for UE, gNB, Core network in automation as well as manually as per the 3GPP specifications.
- Test Planning, Test Case design and execution, Log analysis
- 5G-NR NSA, SA LTE/VoLTE/LTE-adv (CA) for IRAT testing
- MIMO, Layers, CA feature Testing
- Working Experience on Log analysis using QXDM, QCAT,APEX, WebGui/CLI/Wireshark
- Keysight/Amarisoft Callbox/TopCAT
- L1-L2 FAPI log analysis
- IRAT Reselection, Redirection, IRAT Handovers for LTE, 5G
- Classic AUTOSAR
- AUTOSAR, RTE, BSW, Det, Commstack, CAN Module Configuration
- EBTresos
Overview
17
17
years of professional experience
7
7
years of post-secondary education
1
1
Certification
Work history
Technical manager
Cientra Tech Solutions
Bengaluru, Karnataka
04.2020 - 02.2024
- Functional Testing: Verifies protocol compliance with 3GPP standards, including signaling procedures, session establishment, and teardown
- Validate the correct functionality of 5G protocols in both NSA and SA
- Test case design as per the 3GPP for 5G-NR NSA, SA, VoNR, IRAT testing
- Test execution and Log analysis Using WeBGUI Tool, CLI, QXDM
- Working Experience on Keysight/Amarisoft Callbox/TopCAT
- IRAT TEsting Assessed seamless transitions between 4G LTE and 5G
- Ensure compatibility and performance during transitions between different radio technologies (IRAT).
Technical manager
5G Tech Solutions Pvt Ltd
Hyderabad, Telangana
05.2019 - 03.2020
- Building SDR based 4G&5G network in a Box
- Building SDR based UE Simulator
- Test Configurations, Test execution, Log Analysis
- WebGui, Wireshark, CLI based Log analysis
Senior test engineer
Cientra Tech Solutions Pvt Ltd
Bengaluru, Karnataka
10.2017 - 05.2019
- Sanity Testing: Conducted initial, high-level tests to verify basic functionality before detailed testing begins
- Test Planning, test case execution, performance analysis.
- Log analysis using QXDM, QCAT, APEX
- LTE, CA, VoLTE, SRVCC
- MO/MT CSFB
- Mobility Intra, Inter Frequency Handover, Reselection
- IRAT Reselection, Redirection and IRAT Handovers, SRVCC
- Carrier Aggregation 2DLCA, 5DLCA
- Crash scope running and bug reporting and tracking
- Automation scripts on MTF
Software engineer
Transciver Technologies
Hyderabad, Telangana
04.2013 - 10.2017
- LTE L1-L2 FAPI log analysis
- L1-L2 Interface Monitoring: Analyzed logs between Layer 1 (Physical Layer) and Layer 2 (MAC Layer) to ensure proper data flow and signaling.
- FAPI Message Decoding: Interpreted FAPI (Femto Application Platform Interface) messages for PHY-MAC coordination, focusing on DL/UL scheduling, HARQ processes, and transport block transmissions
- Error Detection: Identified and resolved discrepancies in message exchanges between L1 and L2, such as CRC failures, timing mismatches, and resource block assignmentsSynchronization Checks: Verified that PHY and MAC layers were synchronized in terms of subframe timing and resource allocation
- Wireshark tool
Radio Frequency Engineer
Aster Teleservices
Hyderabad, Telangana
03.2007 - 11.2008
- Microwave Network Planning and Link budget calculations for Backbone networks using PATHLOSS 4.0
- Planning of Microwave connectivity for National Backbone networks and Interstate/Intrastate BTS connectivity using NEC SDH/PDH radios (6/15 GHz)
- Microwave Final link Engineering Report preparation
- Capacity Sites Planning
- Frequency planning and interference calculations
- Drive test with TEMS
- MW LOS Feasibility using SOI Map study
Education
Master of Technology - Communication Systems
JNTU
Hyderabad, Telangana 01.2009 - 01.2012
Bachelor of Technology - Electronics and communication
JNTU
Hyderabad, Telangana 08.2002 - 12.2006
Skills
Protocols: 5G NR, LTE protocol stack
Layers: NAS, RRC, MAC, RLC, PDCP, PHY
Linux, Windows
C, Python, MATLAB
QXDM, APEX, WebGui, CLI, Wireshark
Automation Framework Using Python
AUTOSAR, RTE, BSW, Det, Commstack, CAN Module Configuration
EB Tresos
Languages
English
Proficient (C2)
Affiliations
- Professional Beekeeper
Accomplishments
District Volley Ball Player
Certification
PG Diploma in Embedded Systems from CDAC
Timeline
Technical manager
Cientra Tech Solutions
04.2020 - 02.2024
Technical manager
5G Tech Solutions Pvt Ltd
05.2019 - 03.2020
Senior test engineer
Cientra Tech Solutions Pvt Ltd
10.2017 - 05.2019
Software engineer
Transciver Technologies
04.2013 - 10.2017
Master of Technology - Communication Systems
JNTU
01.2009 - 01.2012
Radio Frequency Engineer
Aster Teleservices
03.2007 - 11.2008
Bachelor of Technology - Electronics and communication
JNTU
08.2002 - 12.2006
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