Subbarayan Bagavath Singh
Düsseldorf
Summary
Technical expert with over 20 years of experience in 2G, 3G, 4G, and 5G in Ericsson mobile networks, including 6+ years in Germany. Demonstrated success in RAN integration on Ericsson platforms, network rollouts, and technology migrations.
Overview
21
21
years of professional experience
Work History
Integration Engineer
Ericsson GmbH
Düsseldorf
2018.06 - 2025.05
- Baseband 6630/6651 - New rollout integration for NR; LTE & GSM.
- Migration of technologies between one Baseband to another.
- New integration of GSM cells in BSCs.
- Software upgrade of Baseband through ENM.
- Troubleshooting of integration failures.
- Coordinating with customer and Project coordinators regarding new rollout site acceptance.
- 2G BSC SW upgrade and KPI analyses in the S-RAN project.
- 2G on BB6630 Project Integration and Script Preparation.
Specialist – Network Engineering
Ericsson India Global Services Pvt Ltd
2013.05 - 2018.06
- New site integration for GSM & LTE.
- Sector addition in Baseband nodes for GSM & LTE.
- Feature activation activities in Baseband nodes.
- Updating parameters as per customer requirements for GSM, WCDMA & LTE.
- Preparation and execution of scripts for 2G TRX reduction, Neighbour addition & deletion.
- WCDMA – Migration of RBS from ATM to IP migration.
- GSM – TDM to IP Migration.
- Configuring SIU by changing the IP before migration of cells from one BSC to other.
- BTS, TCU/SIU software upgrade activities.
- Troubleshooting activities.
- Edge reconfiguration for swapped sites.
- BTS software upgrade activities.
- Swapping of 2G BTS from 2000 to 6000 cabinet.
- Migration of TDM sites to IP sites.
- Rehoming of BTS from one BSC to other through C.N.A and changing to ABIS over IP.
Senior Engineer – Field Operations
Ericsson India Pvt Ltd
2005.02 - 2013.04
- Leading the team and providing support for clearing alarms in RNC and NodeB.
- Co-ordinated with Project team for bringing up new RNC and NodeB.
- AT done and clearance given for new RNC and NodeB.
- Leading the team for Generation and circulation of 3G KPI daily reports.
- Hardware maintenance of RNC 3820.
- Providing support to MPBN team, transmission team during maintenance activity.
- Interacting with concern for clearing of O&M related issues.
- Ensuring Backups of RNC node as scheduled.
Consultant – O&M
August Telecom Services India
2004.04 - 2005.01
- Alarm clearance – Involved in clearing of alarms related to BSC, MSC and MGW nodes.
- Backups: Taking CDR, CP & APG backup’s and MGW CV as per schedule.
- Site Migration: Performed many site migrations.
- A-TER and A-link addition as per planning request.
- Augmentation of Inter MSC routes as per planning request.
Education
Bachelor’s Level Engineering - Computer Science & Engineering
AMIE (Associate Member of the Institution of Engineers, India)
2003-03
Skills
- Hands-on experience in Ericsson OSS ENM
- BSC and MSC expertise
- MGW and eNodeB knowledge
- Axe platform proficiency
- MoShell platform familiarity
Custom Section
German Language: DTZ B1 certified, Ericsson Tools ENM, CNA, OSS, Baseband (5216/6630/6651), RBS 2000/3000/6000 series, GSM, WCDMA, LTE, 5G NR, RNC/BSC/MGW
Timeline
Integration Engineer
Ericsson GmbH
2018.06 - 2025.05
Specialist – Network Engineering
Ericsson India Global Services Pvt Ltd
2013.05 - 2018.06
Senior Engineer – Field Operations
Ericsson India Pvt Ltd
2005.02 - 2013.04
Consultant – O&M
August Telecom Services India
2004.04 - 2005.01
Bachelor’s Level Engineering - Computer Science & Engineering
AMIE (Associate Member of the Institution of Engineers, India)