Bipray Saha

Experience

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  Polaris Networks

  Jul 2013 - Jan 2016

  Polaris Networks is a global solution provider for wireless technologies and in recent years it moved towards 3GPP LTE networks. Products include -Functional and Load Testers -Simulation tools for LTE Access and Packet Core -Carrier-grade Core Network solution for deployment in commercial and private LTE networksKey Responsibilities :1. Testing basic and complex scenario with real time equipments like commercial handset base station.2. Testing features manually and in automated way for scenarios like Handover (S1-HO(Intra PLMN and Inter PLMN), X2-HO), MOCN(Multi Operator Core Network) , Throughput testing and testing VoLTE.3. Replicating the customer network in Polaris and fix customer reported issue regarding automation test suite and manual configuration.4. Demonstrations of different products like EPC Emulator, UE automation test tool, Load Tester to customers.5. Helping customer to setup network architecture in their environment.6. Visiting different customer sites for demonstrations and interoperabilitiy testing (IOT). 7.Guiding juniors to solve complicated issues and provided technology training to them.Achievement : Represented Polaris Networks Inc in Mobile World Congress (Barcelona)-2016 Weniger anzeigen Key Responsibility :1. Testing MME Functional Tester which is a wrap around test solution to test the functionality of MME. During this period my key responsibility was to validate the verdict of each test case of MME-FT. During this testing I got good understanding in LTE core. 2. Testing features like S1-Handover, X2 Handover, Paging, Bearer Operation, Idle mode mobility, MOCN , Local and Home Routed Roaming of EPC (MME,SGW,PGW,PCRF & HSS) Emulator . 3. Debugging the issue using Wireshark and tcpdump.4. Gathered LTE knowledge about different LTE nodes like MME,SGW, PGW,HSS and PCRF and S1 layer of eNodeB. 5. Developed test plans, interpreting product specifications.Achievement :Looking at my problem solving capability and my way of handling issues I got pulled in by the FAE team. Weniger anzeigen

  • Field Application Engineer-2

    Apr 2014 - Jan 2016

  • Test Engineer-1

    Jul 2013 - Jan 2014
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  Motorola Solutions

  Jan 2016 - Jan 2020

  Senior Field Application Engineer

  Key responsibilites : - Integrating 5G NR Radio of different vendors with Polaris 5GC.- Integration of 5GC in VM, K8s and Baremetal based server in client lab . - Carrying out IODT with industry leading RAN labs at a very early stage of product develpoment.- 5G NSA based integration with 4G core and 5G NR. - POC with different client and third party module and feature discussion with clients.- Debugging complex issues during integration and making sure the product is as per specification. - Leading a team of 4 to ensure intergration activity across different clients lab and deployment network is carried our smoothly. Weniger anzeigen

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  Mavenir

  Jan 2020 - Aug 2022

   Leading the Integration activity of 5GC NF in Robin platform for 1&1 Operator Performing the acceptace test case for NSA and 5G SA scenarios.  Integrating Rakuten Radio and Spirent test suite with Mavenir Core.  Addition of new features and test case execution and analysys.  Integrated all 5G NFs like AMF, NSSF, UDM, UDR, AUSF, SMF,UPF, BSF, SP, PCF, CHF and feaures like Charging for Single and Multiple RG, Static and Dynamic Policy creation from PCF, Subscribed Limit Control between PCF and CHF. Weniger anzeigen  Leading the IODT activity from Mavenir 5GC with Mavenir RAN & 5G user devices.  Managing the daily sanity of 5GC NF while the build comes out of Jenkins and make sure the end to end call flow works. Debug issues if basic sanity or any other test case fails and find out issue in 5GC NF.  Bring up new labs from scratch for 5GC starting from network planning, K8 cluster creation in off the shelf chassis and ensure the call flow works.  As a part of integration team, help internal team like Ops and ST team for any chart related issue or platform related issue. Weniger anzeigen

  • Technical Lead

    Jan 2021 - Aug 2022

  • Senior Member Of Technical Staff - R&D

    Jan 2020 - Jan 2021
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  Tech Mahindra

  Jul 2022 - now

  Technical Architect

  # Designing of EMBB and FWA test solution for 1&1 deployment . # Defining test solution for new FRNs and CRs for 1&1 use cases. # Design of HLD/LLD and guide the team for successful integration and validation.# Testing and validation of new release of 5G Core network function. #Design and integration of launch critical features like Geo Restriction, Subscriber Limit Control, Tethering Detection, Geo Restriction. # Completed functional testing suite design for EMBB use cases and validated and debugged integration issues for important features like World Zone Barring, Zero Rating solution, EPS Fallback, Wifi-Offloading, Voice and multi-party Conference call etc. #Designed the test solution for Geo Redundancy between two sites and ensure 100% site redundancy. Weniger anzeigen