HARISHKUMAR MANIVANNAN
Bangalore
Summary
- Experience in LTE RAN Testing Engineer with multiple years of expertise in system validation and verification of eNB. Proficient in end-to-end testing, log analysis, troubleshooting, and protocol testing.
- Skilled in call processing, understanding call flows, and system fault management. Adept at writing test cases and scripts with a solid background in IP engineering for LTE/5G networks.
- Experience in Hardware integration and commissioning of LTE & 5G RF Planning, Scripting and Integration for multiple vendors like T- Mobile, Verizon & ATT
- Positive and effective team player who works well across multiple Nokia and customer organizations in providing End to End solutions.
- Proficient problem - solver who can balance business and technical perspectives in developing practical solutions.
- Good knowledge in the areas of 5G architecture, including ORAN, 5G SA, NSA, CU, DU, RU, and protocol layers.
Overview
8
8
years of professional experience
Work History
Senior RAN Engineer
Mobile Comm Technologies India Pvt Ltd
Bangalore
02.2021 - Current
- Network Level Quality Assurance lead tester for Airscale eNodeB. Responsibilities included End to End system product testing, Software Upgrade, Manual OAM, Adversarial, Call Processing, Performance Testing and regression testing of both Nokia and ALU eNodeBs .
- Stability tester. Prisma stability runs on both ALU and Airscale eNodeB to verify there were no resets and abnormalities on the eNB. Also verified eNB Key Performance Indicators (KPI) and debugged issues.
- Nokia- LTE End to End lead tester.
- Experience in core network interfaces such as X2, S1-U, S1-MME, S8/S5, S6a, S10, S11, Gx, RX SGi.
- Responsible for learning, understanding, and integrating new features into the lab.
- Testing various LTE interfaces like S1, X2 and LTE CA Throughput testing.
- Reporting on Key Performance Indicators (KPIs) and investigating KPI anomalies. Analyze and collect logs and create tickets for any issues found.
- Analyze logs and troubleshoot issues to identify root causes and implement solutions.
- Oversee call processing activities, ensuring proper call flow and network performance.
- Develop and execute protocol test cases to validate system functionalities.
- Collaborate with cross-functional teams to resolve system faults and improve performance.
- Knowledge of 3GPP specifications of GSM/3G/LTE/4G/5G (preferably Core networks)
- Worked with other engineers to resolve issues and debug software and hardware faults
- Developed and maintained test plans and test cases based on 3GPP specifications and industry best practices
- · Resolved lab tickets for any general issues testers had with the lab (get eNodeB back online, etc)
Network Associate | Nokia
UST Global India Pvt Ltd
Bangalore
10.2019 - 01.2021
- Working on CIQ & SCF XML creation & scripting for new sites integration & new layer or new technology addition for existing sites for all 5G (FDD & TDD), LTE (FDD & TDD), UMTS & GSM technologies
- Prepare/perform implementation and activation of new GPLs for new Software like SBTS23R1, SBTS23R2, SBTS23R5, SBTS23R4.
- TMO Nokia project RF CIQ, IP CIQ, RFDS and Port Matrix validation.
- Working for KPI’s, Alarms and other optimization activities after integrations before handover to the customer to support integration team to deliver error & alarm free site
- Supporting RF Planning & Optimization team at the time of integration.
- Validation on new features MO and its parameters on FDD and TDD Technologies on every quarterly basis
- Intra Site Carrier Aggregation (FDD and TDD Technologies) and Inter Site Carrier Aggregation (FDD and TDD Technologies)
- Co-ordination the Team with PM, CTA and Client regarding for New Services, Project Updates, Software Updates, Script related Inputs Queries on regular basis
- Working with system support vendors in the implementation of new functionalities, maintenance of system and fault resolution
- Working with development team and testing the new features in Lab which are added in updated Nokia software’s and Nokia products. Below are latest features I have worked.
- LTE Multimedia Broadcast Multicast Services delivers simultaneously the same, reach content (as video) to multiple users with certain Quality of Service in a predefined MBMS serving area.
- Flexible Carrier Aggregation management replaces the concept of Carrier Aggregation pool by introducing a New Cell Radio Network Temporary Identifier (CRNTI) management algorithm, removing the need for CA Pools planning by the operator.
- Citizen Broad band Radio Service (CBRS), spectrum sharing introduced in USA regulating usage of frequency range 3550-3700 MHz
- LTE4300 16TRX FDD mMIMO: DL USBF based on UE feedback, introduces DL user specific beamforming for specific Rel.10 UEs to exploit beamforming gains based on TM9 in downlink for a 16TRX mMIMO Adaptive Antenna System.
- Testing and updating the Tools, with Development team through JIRA. Preparation of FlexiZone and Airscale site commissioning file for LTE sites using WPS, BTS Manager and WebEM.
- Validation on new features MO and its parameters on FDD and TDD Technologies on every quarterly basis.
- MO and Attribute level troubleshooting while Integration
RF Engineer | Ericsson
Aerial Telecom India Pvt Ltd.
Bangalore
02.2016 - 09.2019
- Analysis of degraded KPIs and implement the changes for any degradation
- Field tested using the AZENQOS test kit configured for the Airtel network, typically requiring the G-net tracker and speed test and scanning different bands
- Attended to Customers' complaint analysis and resolutions and also using the reports of survey team
- Providing cluster of reports in order to show the LTE/Volt performance
- Worked directly with RF Engineering Team for optimization of network and to analyses the data collected for Upload, download speed and ping time testing
- Changes will be done using the mechanical and electrical till in the antenna and also clarification will be given by backhand team.
- Physical RF Site verification According to RF site Plan Pre-optimization
- Weekly reports for major roads dropped call, blocked call and congestion in the network.
- Carrying benchmarking activities for weak coverage areas and new sites recommendation
- Post processing and analysis of the drive test data, checking neighbors, and preparation of site acceptance, integration and network performance Routes.
- Collection of Live Network Data using TEMS INVESTIGATION Tool and analyzing the performance of their network.
- Analyzing reason for dropped call, blocked call, missing neighbours, polluter, site overshooting and optimizing it.
- Hands - on experience on various RF optimization tools like TEMS Data Collection, TEMS Route Analysis, MAPINFO, Citrix, Net Act, etc.. Deep knowledge of GSM and WCDMA RF testing methods.
Education
B.E - Electronics & Communication Engineering
Mahendra Institute of Engineering And Technology
Namakkal, TN04-2014
Skills
- LTE RAN End-to-End performance testing
- Scripting(SCF) & Integration
- Protocol Testing
- CA HO SRVCC CSFB
- KPI Throughput Testing
- Log Analysis and Troubleshooting
- Call Processing and Call Flow
- 5G_SA & NSA ORAN
- RF Network Drive Test and Optimization
- Drive test Survey
- QXDM ELT
- Wireshark
- WEBEM BTS
- NetAct Citrix
- Eagle Mscripter
- ENM Cramer Unison
- POWER BI LEMMING
- TEMS Investigation Map Info
- AZENQOS
Skypeid
mharishkumarbe_1
https://www.linkedin.com/in/harishkumar-manivannan-2195b3a9/
Alternatecontactno
+91-6383571153
Personal Information
Date of Birth: 05/11/93
Languages
- Tamil
- English
Languages
Tamil
First Language
English
Proficient (C2)
C2
Timeline
Senior RAN Engineer
Mobile Comm Technologies India Pvt Ltd
02.2021 - Current
Network Associate | Nokia
UST Global India Pvt Ltd
10.2019 - 01.2021
RF Engineer | Ericsson
Aerial Telecom India Pvt Ltd.
02.2016 - 09.2019
B.E - Electronics & Communication Engineering
Mahendra Institute of Engineering And Technology
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