Abhijit B.

Abhijit B.

Lead Consultant in Wireless

, India

Experience: 13 Years

Abhijit

Lead Consultant in Wireless

13 Years

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About Me

I am a telecommnication systems expert. Have worked on system integration and deployment and field testing activities for RAN-nodes of 2G,3G,4G,4g-advanced. Currently am working as a 5G protocol developer for STC. I also have a profound networking...

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Portfolio Projects

Design and develop IoT-application

Company

Design and develop IoT-application

Description

Design and develop IoT-application for Device-Management and integrating the Device-applications with other service lines.

•    Tenure Period and Role(Software Architect, Jan 2018 – Till Date) for Nokia client
•    Project Description

Design and Development of STC 5G Radio Access Network MAC scheduling algorithms and device management functionalities of Huawei Mate 20X 5G and ZTE Axon 10 Pro 5G at Riyadh, Saudi Arabia.
Currently working on Scheduling Information Reporting,Error correction through HARQ, Priority handling between UEs by means of dynamic scheduling, Priority handling between logical channels of one UE by means of logical channel prioritization.
Worked on SDAP implementation as Mapping between a QoS flow and a data radio bearer  (Due to new QoS framework), Marking QoS flow ID (QFI) in both DL and UL packets ( DL: due to reflective QoS and UL: due to new QoS framework).
Designing and Architecting CPE device management for data path bandwidth analysis of the physical router devices and thus designing solutions through essential signal reduction at times to procure more physical bandwidth for routers, wireless and wireline.

Implemented C++ 11 design patterns for a generic function of router data encryption, compression and communication towards Nokia Analytics Server for the KPI-analysis of the data like TotalBytesSend, TotalBytesReceived etc.

Implemented a simulator in which can recognize router devices using excessive bandwidth within a geographical territory while sending and receiving high volume of data over the air.

Devising codes using OpenWrt Operating environment standards after the analysis of the respective routers specification. Futuristic plan is to analyse the Middleware Operating systems and HAL of the routers (that does not support OpenWrt) to find out the APIs or System calls to utilize the device code integration further.

Involved in implementing router device authentication using TLS 1.2 protocol for data encryption mechanism.

Implementing solution for Nokia Traffic Regulation Module server according to TR157, TR069, TR160 communication specification guidelines.

Involved into implementing solution of identifying the signalling messages like notification, FW-update etc. in order to reduce signalling at peak datarate usage of the routers and thus providing relatively more bandwidth to the routers for DataPath establishment and Data Flow.

Have a futuristic plan to provide the KPI-analysis of the physical signalling and data path related data in order to make operators identify the root causes of the bandwidth reduction at certain instant of time of the routers deployed into the field and thus providing solutions on the fly through reduction of unnecessary and redundant signalling messages for that particular instant.
 

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Tools

cmake

Clean device-management

Company

Clean device-management

Description

•    Tenure Period and Role(Software Architect, Mar 2018 – December 2018) for Diversey client
•    Project Description

Designing and architecting of the Internet of Clean device-management for hosting the services in cloud agnostic fashion (current target clouds are AWS)

Designing MQTT-mosquitto broker services for device firmware and configuration update and event based remote messaging services for multiple publishers and subscribers platform.

Designing backend API-services in Python framework using singleton classes.

Involved in defining UI/UX standard guidelines as per client requirements and delegating UI-activities to the peers.

        Delegation of the QA-automation tasks and building up selenium web framework for TestNG suits.

        Configuring AWS cloud for IaaS-services and building up master-selection algorithms for
        Asynchronus cloud application hosting for Highly available, multi-tenant environment for production
        Platforms.

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Modelling protocol

Company

Modelling protocol

Description

•    Freelancing operation for the MQTT producer-subscriber modelling protocol communications for IoT devices. (Technical Project Manager, Aug 2017 – Feb 2018) for Intel client
•    Project description
    
Technology used
   IoT device communications standards

Responsibility
   Managing the entire test based development environment with 10 members from
   multiple geographical locations.
   Python scripting for integration of the broker and MQTT client libraries for the 
   producer-subscriber message communication automation and testing.
   Defining asynchronous message transmission between IoT devices, MQTT-servers
   and Android/IoS subscribers in-order for energy savings of the IoT devices and
   decoupling the systems to for independent operations.
   Involved in cloud-ops and Devops operation,AWS infrastructure design, configuring
   VPC, NAT,Route53,EC2-public and private instances,RDS,Worspaces(RDP) for hosting
   UI(public) and API-backend-DB(private) subnets.
   

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Network monitoring and performance management

Company

Network monitoring and performance management

Description

•    5G & NFV on SDN networks for building up communication suit for the virtual network for Mulesoft on a payroll of Standav LLC (Senior Software Engineer, May 2017 – July 2017) for Mulesoft client
•    Project description
To build up the OpenDayLight functionality and Ansible to bring up with the network monitoring and performance management and building Virtual Network Services over the existing operator networks.

Technology used
4G-Advance,5G & NFV, Yang-Data and Service Modelling standards,3GPP standards etc.

Responsibility

Doing mulesoft Developer certification in-order to get to know the Mule software architecture.
Extensive PoC operations on Yang Modelling with Frinx for L2VPN & L3VPN data and service modelling.
Currently trying to grasp the activities of the HPE-NA and Kloudspot services in order to integrate the same with Mulesoft.
Developing Device drivers over Virtual Machines to work as a network service provisioning through softwares.
Getting the future fortune of the customers to join network services through NIP over wireline & wireless services.
Working knowledge of Netconf, Opendaylight, Openstack,OpenFlow, SDN-controllers.
Device driver programming and Python scripting for the instantiation and linking of VMs of different hardwares like routers,switches etc for SDN controller operation and flow control.
Hands on experience in Networking driver development, Ethernet and Wireless LAN driver development.
Channel model simulations for below 6 GHz and above 6 GHz mmWave.
SD-WAN implementation for increasing operator base coverage and capacity improvements. 
Implementing hybrid cloud for control and data for multi-vendor envvironments.
Implementing network slice or cluster of Infrastucture (eg. virtualization of network functions DSP-cores, Storage, Shared Memory, NIC-cards) for increasing performance, coverage, capacity, agility, Security of the network.
Virtual L2VPN and L3VPN tunnel implementation for bringing up cloud-Ran. 
IoT,CRAN implementation on SaaS,IaaS & PaaS modelling.
Implemented Dockers swarn for highly available and dynamically scalable SaaS, PaaS, IaaS service solutions.
Building up Virtual Base Station Cluster of CRAN for service chaining and exploiting and information theoretic approach to model and analyze the uncertainty of cellular traffic, captured by RRHs. Implementing CoMP Joint transmission through carrier aggregation and co-ordinated beamforming through tilting macro and small cells.
Virtual Base Station prototype implementation, testbed experiments and simulation results, performed with simulated cellular traffic traces and thus the selective switching of the RRHs to demonstrate the overall reducing energy consumption upto 25% for OPEX reduction for the operators.  
Identifying the complexity of the optimal dynamic traffic awareness 5G Cloud-RAN and design a framework for traffic aware energy optimization.
Routing, Switching, Network Management Systems, Element Management Systems for Radio Access Networks service modelling and related network function virtualization for Hybrid cloud models(eg. Centralized Self Organizing Networks, Distributed Self Organizing Networks, Openflow vSwitch SDN-controller and Flow-table, Group-table implementation according to ONF specifications).
Virtual implications of an Enterprise and Operator network designing and architecting for better Quality of experience provisioning for very high data rate (10 Gbps - DL,1 - Gbps UL).
Implementing Equal Cost Multiple Path traffic scheduling for better throughput and performance-failure resilience using router algorithms.
Load-balancing algorithms of routers in virtually distributed environment for improving traffic performance and resilience to the system failure.
Closely worked with the Devops team for Microsoft Azure to understand the future PaaS application support provisioning for the datacenter operations.
Testing Carrier Aggregation for Co-ordinated Multi Point Joint Transmission of Macro, Small/Femto, RRH and RNs in order to get high data throughput of 1 Gbps at UE side and 10 Mbps at Cell-Site. Antenna Diversity and MIMO configuration test for single and Multiple users at cell-edges to enhance reliability and at high power density of cell region the Thorughput enhancement testing. Tested 256-QAM symbol modulation with differential coding rates for reliability and accessibility and capacity-coverage enhancement. Tested the VmWare (single and multiple core processors) created network slices allocation for different Qos applications like HD-video,Video-On-Demand,Gaming application etc. Testing of the network slice security threats and checked if it must not propagate outside of the created Virtual Base Stations. Testing of the creation of VBSs on demand basis through Load-Balancing protocol usage between Centralized and Distributed SDN-controllers. Tested the North Bound Statistics and East-West bound Load-Information flow between the VMs/VBSs for performance tuning and increasing scalability of the system.
Developing Test Automation Environment using TTCN3 for protocol layer testing.

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SIP protocol and RCS UEs

Company

SIP protocol and RCS UEs

Description

•    SIP,IMS,VOIP,MPLS,BGP,OSPF protocol implementation and Traffic Engineering for Eucast on Technologies on Payroll of Synergy Netsoft Ltd. (Senior Tech Lead Role) for Hitachi client

•    Technology used
To setup end-to-end environment for SIP protocol and RCS UEs with VoLTE IMS call flow test bed scenarios.
BGPv4,MPLS,MPLS-TP,OSPF

•    Responsibility
Enthusiastic professional with proven ability to develop and implement detailed project plans to monitor and track project processes. Proficient in ensuring on-time deliverables by ensuring effective coordination of resources and manpower.
Requirement analysis for Customer Edge and Provider Edge routers traffic engineering.
    Configuration and troubleshooting of layer 2 and layer 3 equipment.
    Implementing MPLS LSP FIB, OSPF RIB & FIB, BGP RIB etc for provider and 
          Customer edge routers.
          Structured network cabling such as STP, UTP, coaxial etc., installation and cofig
          of LAN, WAN and wireless network with active components such as routers, switches,
          modems.
    Creating infrastructure of wiring and install network component.
    Configured, and troubleshooting STP and Virtual VLANS.
    Checked routing policy and define policy using policy map.
    Apply user policy and per Worked order and test speed, worked on L2 MPLS circuits.
    Using Route map in OSPF and BGP for set the policies as per Worked requirement.
    Installation, Integration, Administration and maintenance of LAN and WAN setup.
    Introduced Agile methodology in order to drive parallel design, development and
          testing strategies.Initial Lab-configuration for test bed setup and reviewing testing
          testing activities of the subordinates and providing reports on a weekly based fashion
          to the immediate functional Management team.
          Proficiency in working as an SME and providing solutions for the establishment,
          throughput and performance improvement of packet data networks and implement
          traffic engineering algorithms for equal cost multiple path data traffic routing.
Requirement analysis for IMS,RCS(Rich Communication Suits),SIP,VOIP,VOLTE.
SIP-URI notifications for RCS communications development in C on linux environment.
Setting up Conference calls through IMS domain and designing codes for Media Resource Functionality and Media gateway along with the SIP-signalling and MGW path establishment.
Unit testing functional and non-functional development activities.
Integrating SIP-Softphone codes for RCS enabled UEs into the SIP protocol stack using C and testing the end-to-end SIP protocol functionality and establishment of RTP,RTCP data services path for RCS UEs according to GSMA specifications.
Establishment of Default Bearer from Internet PDN to QCI1- IMS Bearer through LTE networks and setting up voip call over the existing VOLTE network.
Testing the voip call signalling and media gateway path for general and conference call scenarios.
Testing carrier aggregation through running multiple services like browsing data, locating mobiles, playing and interactive game and doing a conference over the network and check with the data speed in non aggregated carrier and aggregated carrier path scenarios.
          Hands on experience working on the interfaces like Rx,Gx,Gy,S9,S6a etc.
          Building up test strategy and test plans for product NodeB,RNC,MSC,SGSN and 
          GGSN and delegation of the work to the subordinates.
          Writing Test Scripts in TTCN3 for protocol stack testing and automation activities
          For designing regression test suits.
 

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Skills

Python

Protocol stack development

Company

Protocol stack development

Description

•    LTE eNodeB-small cell & Qualcomm FFA mobile L1/L2/L3 protocol stack development and integration testing for Eucast technologies (Technical Consultant Role , December 2014 – Feb 2016)
For Hitachi client
•    Project description
To develop & integrate Contela Hardware and Aricent Software for LTE eNodeB small cell TDD product operations for vendor Hitachi.

•    Technology used
LTE 3GPP2 RRC,RLC,MAC,PHY standards.

•    Responsibility
Requirement analysis of client and implement protocol stack for eNodeB-TDD small cells, delegating tasks to the subordinates according to their skill-sets and mitigation of plan for optimization in accordance with the fast changing client requirements.
Engage with solution providers and OEMs on technical and product roadmap discussions.
Subject Matter Expertise (SME) to generate a detailed and complete set of product and system requirements that is required to be met to deploy a smart and robust standalone product as well as the end-to-end network.
Draft Request for Information (RFI) in accordance with Technology, Architecture & Strategy vision, and review RFI responses from solution providers.
Had lead Proof-of-Concept (PoC) evaluations and provide recommendations for technology adoption and selecting among solutions.
Mobile modem driver testing,debugging,tracelog analysis,protocol and firmware 4g testing.
Debug mainline health issues coming out of daily/hourly automated HW/SW tests.
Had defined detailed product and system requirements; as well as performance metrics.
Collaborated as well as review the test case plan and the test results of the Test and QA team.
Hands on experience working in ARM(L2/L3 controllers) and TI C66X platform.DSP programming.
Pro-actively involed with the developers for the optimization of data-traffic according to the changing QoS requirements to fulfil users need and hence help in building up operator’s revenue.
Involved in developing and debugging OMC,RRC,RRM,PDCP,RLC,MAC & Phy layer procedures for call processing.
Involved in designing and implementation of algorithms for data scheduling(dynamic,SPS etc) at MAC layer.
Involved in analyzing RF-KPI parameters and proactively provide solutions to the operators for the improvements in order to improve the network Qoscapacity and Quality of Experience of the user.
Design & Implemented RACH optimization Algorithm.
Hands on experience working in ARM(L2/L3 controllers) and TI C66X platform for L1-controller.
Created Performance profiling for L2. Partition the functionality of MAC sub-module in multi-threaded architecture. 
Worked on various scheduling algorithms development (Round Robin, proportional fair scheduling,Quality of Service aware scheduling)
Be a part ICIC (Inter-cell interference coordination), TPC (Transmit Power Control) sub module design & development.
Initial configuration setup of parameters for LTE-eNodeBfemtocells, Network elements used for the test-bed setup such as Qualcomm-UE test-mobile and Aeroflex simulator for multiple UE simulation,SPICO(LTE-eNodeBFemtoCell , single component carrier of 20 MHz bandwidth TDD ; Contela-Hitachi and Aricent EPC and corresponding application server and verification-validation of configuration parameters through UC-tools in accordance with the 3GPP2 guidelines.
Commissioning of SPICO/eNodeB-femtocells.
Settings of the networking devices (Cisco Router, switches) co-coordinating with the system/Network administrator during implementation.
Troubleshooting of complex LAN/WAN infrastructure, including routing protocols EIGRP, OSPF & BGP.
Implemented security policies using ACL, Firewall, IPSEC, SSL, VPN, IPS/IDS, AAA (RADIUS).
Installation, Configuration and Administration of Windows Servers 2000/2003, Active Directory, FTP, DNS, DHCP, TFTP, Linux OS under various LAN and WAN environments.
Migration of existing IPSEC VPN tunnels from Pre-Shared key to Certificate.
Involved in SNMP Network management.
Involved in working on SDN controllers, NFV,openflow protocol.
Guiding subordinates for the testing the entire protocol layer testing of RRC,RLC,MAC and PHY in accordance with the real time call processing scenarios & Handover scenarios.CSfallback or VoLTEcall processing scenarios.
Involved in definition and review of algorithms for SON.
Implementation of SON call flow and algorithm.
Extensive debugging for the VoLTE signalling and data path establishment through P/I/S-CSCF and media establishment through MGW using SDP protocols.
Worked on testing Rel-8/9/10/11 SON optimization techniques like RACH optimization,Cell outage detection and compensation, Mobility Robustness Optimization, Mobility Load Balancing,trafficshapping,bandwidthmanagement,PCI-planning,Coverage and Capacity optimization, Energy Savings, ICIC (Inter Cell Interference Co-ordination), interference Reduction and Automatic Neighbour Relations for Single vendor and multi vendor environment.
Daisy Chain Configuration using 3 spico's(eNodeBs) for increasing capacity and coverage of the network in a particular geographical area for heavy traffic management.
Implementing FAPI interface and debugging SFN related issues at Phy/L1- layer and implemented the FAPI synchronization procedure for L1-master L2-slave.
Regression test suit preparation for L2/L3 protocols.
Figuring out the RF-statistical parameters like Downlink/Uplink backhaul line usage, Mean Processor Usage and Peak Processor Usage,RF Statistics Avg RSSI for Antenna port 1 and antenna port 2,PDCP Avg SDU bit-rate for QCi1-4 and QCI5-9, Avg Number of Active Users in DL and UL,DL/UL Total PRB Usage,RRCConnection Statistics, Intra and Inter freq HO statistics in-order to manage EUTRAN and proactively find out faults in the network on a daily routine basis for the operators.
Hands on experience in configuring and testing Home eNodeB Management Software for Operation and Administration according to the network operator’s needs.
Providing support to the developers for building up OAM/OMCsoftwares through investigation and proper guidance of the selection of configuration parameters for mapping those configuration parameters with the OMC-parameters and documentation of the same.
Contributed in configuring Cisco-routers for real time traffic using through implementing network topologies eg. OSPF,BGP,EIGRP,IS-IS,MPLS for fast convergence. 
RF planning & Optimization for 2G,3G and 4G networks through KPI-parameters, EMF testing, Inter Operability testing between 2g/3g and 4g on cross vendor environment.
Worked with engineering teams on system-level design, providing architectural guidance and produce detailed Feature Specific Requirements. 
Worked with QA,PCT and SIT teams on devising and reviewing test plans. 
Worked directly with customers(Hitachi and KDDI) and with product marketing to converge on product requirements. 
Reviewed and provided feedback on technical documents written throughout the organization. 
Proposed new, creative solutions for tough, system-wide problems.Produced white papers and technical memorandums for customers and for internal teams.
Developed test regression suits using TTCN3 for automating the test environment and generating reports.

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Tools

Notepad ++

UMTS packet core

Company

UMTS packet core

Description

•    UMTS packet core SME for Alcatel-Lucent (Tech Lead Role, Oct 2013 – Nov 2014) for Alcatel-Lucent client
 
•    Project description
To provide functional level solutions for packet data networks in 2G and 3G.
•    Technology used
2G and 3GPP standards.
•    Responsibility
Building up test strategy and test plans for product NodeB,RNC,MSC,SGSN and GGSN and delegation of the work to the subordinates.
Configuration and troubleshooting of layer 2 and layer 3 equipments.
Structured network cabling such as STP, UTP, coaxial etc., installation and configuration of LAN, WAN and wireless network with active components such as routers, switches, modems.
Creating infrastructure of wiring and install network component.
Configured, and troubleshooting STP and Virtual VLANS.
Checked routing policy and define policy using policy map.
Apply user policy and per Worked order and test speed, worked on L2 MPLS circuits.
Using Route map in OSPF and BGP for set the policies as per Worked requirement.
Installation, Integration, Administration and maintenance of LAN and WAN setup.
Introduced Agile methodology in order to drive parallel design, development and testing strategies.Initial Lab-configuration for test bed setup and reviewing testing activities of the subordinates and providing reports on a weekly based fashion to the immediate functional Management team. Active involvement in testing FDPCH feature and Performance Management counters for call processing. Proficiency in working as an SME and providing solutions for the establishment, throughput and performance improvement of packet data networks while integration of RNC with SGSN and GGSN. SS7 protocol suite testing analysis and providing solutions to design and develop IuCS and IuPS(Mostly) interface signalling and data transfer.Regression test suit,Penetration testing,Traffic shaping, bandwidth management development using TCL.Hands on experience testing the Radius,Diameter,TACACS etc
 

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Tools

Notepad ++

Simulator configuration

Company

Simulator configuration

Description

•    LTE EPCcore simulator configuration and feature testing for Dynamic Digital Technology (Module Lead Role , July 2012 – August 2013) for Benu Networks client
 
•    Project description
To test EPC-core simulator elements of LTE.
•    Technology and tools used
3GPP2 standards for MME, SGW and PGW.
•    Responsibility
Involved in setting up end to end configurations of LTE-emulated nodes using Virtual machines like EnodeB, MME, SGW and PGW and their following interfaces like S1-AP, S1-U, S11, S3, S5 and S8, Sgietc .
Involved in finding and reporting bugs in initial configurations for the LTE-emulators for UE-attach procedures.
Involved into setting up DHCP environment into the PGW with the internet world for dynamicip-address allocation to the mobiles and testing through console.
Writing test plans for testing the dynamicip-address allocation to the mobiles using DHCP-environment for Specific Vendors (Airtel,Vodaphone etc.) and Multiple operators. 
Involved in the basicconfiguration and testing the LTE NetEPC product on a full length to test the attach,pdn-connection,bearer resource allocation etc and provide the test verdict to the customers.
Involved in the initial setup of testing environment for EnodeB(product under test) with real qualcommues and virtual machines or simulators setup for MME,SGW,PGW along with PCEF and PCRF embedded.
Tested the RRC,RLC,MAC layer related protocols and their functionalities for initial UE-attach,PDNconnectivity,Default bearer creation,X2 Handover and S1 Handover scenarios.
Hands on experience in testing the policy and charging network elements functionalities like as PCEF, PCRF, PAS,OFCS, OCS.
Knowledge on credit control policies, online charging, CDR generation and deep packet inspections in PDN-GW, enforced by PCEF.
End to end service data flow testing, traffic and performance testing.
Involved in setting up corporate VLANS for Benu Networks.

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Skills

DHCP LTE

Tools

Notepad ++

ASNGW configuration

Company

ASNGW configuration

Description

•    Wimax ASNGW configuration and feature testing for Primesoft Solutions Inc. (Senior Software Engineer role, Mar 2012 – July 2012) for Benu Networks client
 
•    Project description
To configure and test ASNGW features.
•    Technology used
AricentWimax ASNGW product specifications
•    Responsibility
Involved in setting up end to end configurations of ASNGW through CLI-interfaces for the simulation of ASN-GW, MS_BS and CSN network according to requirements provided by the customer.
Involved into the testing of the product ASNGW for Initial Network Entry for the 4G-Wimax Mobiles and reporting bugs according to the standards.
Writing test plans for testing ASNGW according to the scenarios specified as Mobile Originated, Terminated Call, VOIP, Authentication, DHCP, MIP-client, Initial Network Entry testing following the SRDs
Testing the performance of the product calculating the total capacity of the subscribers able to make an Initial Network Entry.
Hands on experience on ATCA platform.
 

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Skills

DHCP

Tools

Notepad ++

Proactive Network Management

Company

Proactive Network Management

Description

•    Proactive Network Management for Alcatel Lucent Client on payroll of Aricent Technologies. (Senior Testing Engineer role , Dec 2010 -  Mar 2012)

•    Project description
To analyze RF-parameters for Proactive Network Management.
•    Technology used
LTE,UMTS,GSM& GPRS
•    Responsibility

Building up test plans to meet various operator expectation for Network Health Matrix,Performance analysis.
Building up test-suites for BSNL-CDMA networks for Proactive Network Management along with 
Traffic network performance issues and KPI parameters along with Network Topological views.
Testing functionalities of CPS,MME,PDN and S1-S8 interfaces for LTE networks in-order to find 
Out the performance of Network Elements through the KPI parameters and graphs generated for a daily,weekly,monthly basis.
Building Test-Plans For Event Filter Manager for admin and user in-order to filter rules for operators.
 

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Tools

Notepad ++

RAB-testing

Company

RAB-testing

Description

•    UMTS NodeBconfiguration, commissioning and RAB-testing for Nokia Siemens Client on a payroll of Aricent Technologies (Senior Testing Engineer role , Jan 2010 – Dec 2012) 

•    Project description
To configure, commission and perform RAB-testing of NodeB.
•    Technology used
3GPP UMTS standards
•    Responsibility
Worked on different versions of Node-B setup installation and commissioning and
integrating cells with Radio Access Network.
Installation, Commissioning & Integration testing of Motorola HLR with NSN MSC-VLR
And SGSN.
Complete end to end configuration includes USIM configuration, 3G UMTS Subscriber
Profile Creation in HLR & provisioning all services.
Worked for the feature and functional testing and unit-integration testing for HSDPA
EDCH etc.
Testing WCDMA NSN flexi BTS components and features for AMR, RT and NRT traffics  
With differently allocated scheduling priorities and weight are defined in NodeB.
Configure and commission SIMO BTS and ULTRA BTS.
Configuration and testing of HLR database with proper QOS like conversation,
Streaming,background and interactive.
Tested packet delay as per the different priorities on multi-rab environment.
          

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Tools

Notepad ++

Commission and perform UPlane integration

Company

Commission and perform UPlane integration

Description

  • •    UMTS RNCconfiguration, commissioning and user plane unit integration testing for Nokia Siemens Client on a payroll of Aricent Technologies (Senior   Testing Engineer role , Sep 2008 – Dec 2009) 

    •    Project description
    To configure, commission and perform UPlane integration-testing of RNC.
    •    Technology used
    3GPP UMTS standards
    •    Responsibility
    Worked on the testing of basicC-Plane and U-Plane functionality testing. (For e.g.-AMR,Streaming,CS-PS NRT,HSPA-NRT call setup etc.) on 10 ms TTI frame.
    Building up test plans for the functional testing and unit-integration testing for HSPA features (For e.g. -  testing of introduction of Signaling Radio Bearers and Radio Bearers to get mapped onto E-DCH channel to be worked on 2 ms TTI frame).
    Building up test plans for Features related to the performance evaluation of DSP-usage to support more number of HSPA-users to be incorporated into UTRAN area using the legacy hardware to less up operation costs for operators and gaining profit.
    Studied Internal Flow Control for the Static and Dynamic Bandwidth allocation of Qos and Cos and Virtual Queue and Scheduling implementations done on IPA2800 platform interfaces.
    Involved executing Capacity, Performance and Throughput test cases using Proprietary simulators and RNC (NSN-product) for the Unit –Integration of User-Plane.
    mcRNCArchitecture,installation,commissioning,connectivity,SW& HW troubleshooting,SW,licencing, fault and performance management.

     Functional and Regression test suit development using Python for control and user plane unit
                 Integration testing. 
     

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Tools

Notepad ++

Commission and perform ASNGW integration

Company

Commission and perform ASNGW integration

Description

•    Wimax ASNGW integration testing for Alcatel Lucent Technologies on a payroll of Aricent Technologies (Junior Testing Engineer role, July 2007 – August
2008)

•    Project description
To configure, commission and perform ASNGW integration-testing.
•    Technology used
Wimax Forum Standards
•    Responsibility
Involved in setting up end to end configurations according to requirements provided by the customer.
Feature testing of Qos Functionalities of Wimax ASN-GW for various kind of services like Conversational,Streaming,Interactive and Background.
Developing the automation scripts to automate the MS-BS at RAN side and Core Network elements like Home-agent,AAA,SBC,DHCP-Server and DNS-Server etc.
Involved in configuration of automation test tool along with regression testing of the product.
Hands on experience in testing application and security protocols eg. HTTP,HTTPS,FTP,TFTP,TELNET,PPP and PPPoE,DHCP,DNS,NTP,STP,ATM,IPQos,DSCPmarking,IGMP,ICMP,RTP,RTCP,TCP,UDPetc
 

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Tools

Notepad ++

Operation Administration and Maintenance

Company

Operation Administration and Maintenance

Description

•    Operation Administration & Maintenance of BTS for Lucent on a payroll of Aricent Technologies (Junior Testing Engineer role, April 2007 – June 2007)

•    Project description
Operation Administration and Maintenance of BTS.
•    Technology used
GSM Standards
•    Responsibility
     
Operations done: Ignite for bringing up OMC servers, Upgrading OS/TPS and Application versions for maintaining version control of platform with the application through running ugrade scripts. Understanding fallback of versions and payloads.
Patch depot / bundle and package installation for various releases with Linux OS, process management, network services ( DNS, DHCP, IPTABLES, FTP, NFS).
Undergone the functionalty of OMC volume control for bringing up hardware following a distributed architecture.
Interacted with peers to get the entire OMC architecture and functionalities of different modules like Rungui(user interface),MIB(Managing Logical Objects created for each physical network entity introduced into the existing network system),COMM(for communication with the network elements).
Have gone through GSM-NET Testing from setting up network elements like Babsi simulator, Nethalk MSC Simulator with the OMC Servers and tested with voice call.
Experience testing SS7 protocol communication and SGSN and GGSN network support provider for circuit data networks.

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Softphone application and unit testing

Company

Softphone application and unit testing

Description

•    UMA Softphone Development for Aricent Technologies (Junior Development Engineer role, Sep 2006 – Mar 2007)

•    Project description
To develop UMA Softphone application and unit testing.
•    Technology used
GSM & SIP Standards, C++
•    Responsibility
   Interacted with the developer peers about the design of new requirements and have given task to build application for sending RTP data in uplink i.e reception of data from Softphone and routing it through to SPC from where it can get routed towards BCF.
Development of TCP/UDP application for receiving RTP data (voice) from SIP-Softphone running onto Linux-Box and sending acknowledgement back to the Softphone.Also have reused the application interfaces defined according to GSM standard and make it possible to route data packets within the internally predefined subsystems.
Building the code developed onto HP-UX and porting it to BTS hardware (Flexent-GSM Macrocell 1900) with the help of Abis link.
Testing the ported application and took logs from the serial output of BTS hardware i.e from Media Rack Interface Card.
Analyzing logs and taking preventive measure to make the application run onto the BTS hardware being uninterrupted.
Contributed in testing Mobile Originated Call with the help of existing and modification of Python scripts for the received downlink data packets i.e data packets routed from SPC to Translation driver.
Interact with developer peers and Contributed on design and analysis for building application to make it worthy according to the standards.
Contribute on development of the Softphone Application along with other fresher peers to send voice or RTP data among the two Softphones.
Tested the application thoroughly with the help of Ethereal tool and checked with UDP, RTP and RTCP data packets routing.
Analyzed and Developed test cases for different possible checking conditions.
Transformation of Phone numbers to Ip-addresses in order to build up a VOIP based network call between PC to PC.
Used GSM codec for voice applications and using corresponding H.323 signaling and Voice data support protocol stacks.
Expertise in testing SIP call flows and Media and Codecconformance testing.
 

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Skills

C++

Tools

Notepad ++

• Tenure Period and Role(Software Architect, Mar 2018 – December 2018) for Diversey client •

Company

• Tenure Period and Role(Software Architect, Mar 2018 – December 2018) for Diversey client •

Description

Internet of cleaning devices are a group of devices which will be operated remotely with an IoT application. All the devices are remotely managed along with their functionalities.

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