Rajendra Choudhary
rajendrachy@gmail.com
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8+ Years of Experience in telecom domain,
on software design and development, Functional testing,
Conformance and System Integration and validation.
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Experienced in LTE architecture, Access and EPC
(MME, SGW, and PGW) and their integration. Good knowledge of IMS
architecture, IMS interfaces and functionalities of IMS entities
(I/P/S-CSCF, HSS, SIP AS).
·
Hands on experience in debugging, Testing (Manual and
Automated) and providing solutions for LTE call flow issues (UE and
EPC). Experienced in S1AP (S1MME), SBC-AP, Diameter (S6,
Cx), SIP (Mw) and GTP (S1u, S5/S8) protocol in control
plane signaling.
·
Experience in Leading the Functional development for
various protocols for LTE-MME and PGW Node, for Software upgrade, LI and High
availability feature.
·
Strong technology base in the domain of packet based
networking technologies.
·
Experience in formulation of overall requirement
and Design, development, verification Strategy, Selection and
Preparation of Test topologies for System and Functional development of L2/L3
protocols: Standard protocols SNMP, DHCP, Multicast IGMP
Snooping and Clients interface like CLI / Browser-based client interface and High
availability feature.
·
Experience in Test planning (Both Functional and
System), Test case review, Test Reporting and Defect management
systems (Bugzilla, DETS).
·
Automation Development Experience in automating System
Test Cases using TCL/TK for LTE product and c-simulator for BLADE switch
product.
·
Experience in Embedded Software Validation and
Verification
·
Excellent communication and troubleshooting, bug
fixing skills.
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Skill Type
|
Description
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Protocols
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3GPP
standards protocols. L2/L3 Protocol like ARP, IP, IP Routing, ICMP, IGMP,
and SNMP.
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Operating
Systems
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Linux, Unix
|
|
Programming
Languages
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C, core
Java, Shell scripting java Script, TCL/TK.
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Tools
/Configuration Management
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Ethereal,
Val-grind, Wire-shark, GDB, Clear-Case , CVS
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|
Other Skills
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GNU
Makefiles, System programming, coding and Unit testing, MIB Design and its
validation. API development and testing.
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Degree
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Specialization
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Institution / University
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Year of passing
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MCA
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Computer
Application
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University
of Rajasthan
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2006(with
HONORS)
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BSc.
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Computer
Science
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University
of Rajasthan
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2002
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Ø
Team award for Intel verification project.
Ø
Team award for MME development product.
Ø
Team award for PGW development product.
Ø
Part of Product team, to get certification for
the CMM Level 5.
Project
Client: Cisco Systems,
Inc. (Cisco Routers)
Duration:
Working since January 2014- Present San Jose, CA.
|
Description
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Project
Name:- NCS4k/ASR9k
This project involves
running the Cisco Router using IOS XR operating system, Cisco's innovative
virtualized operating environment.
|
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Contribution
|
Ø
Responsible for developing new features.
Ø
Responsible for debugging protocol issues for
drooped packet using cli and debug trace. The debugging involves deep
analysis of issue at different component at on the bundles and LPTS for the cisco high-end router that
controls/provides the in Packet forwarding path, L2/L3 switching stacks.
Ø
Responsible for analyzing software Crash and
then narrowing it down to a Module level and then fix it.
Ø
Log analysis and troubleshooting/analyzing
problems.
Ø
Responsible for providing inputs to the
Customer Queries on different issues encountered during Field/Platform
testing.
Ø Feature enhancement of multithreaded ASR9k FPD upgrade
infrastructure.
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Project
Client: Intel Mobile Communications (LTE)
Duration:
February 2013 to December 2013, Allentown, Pennsylvania.
|
Description
|
Project
Name:- UE Modem Protocol Stack Debugger
This project
involves debugging UE Modem issues on technology 2G, 3G and 4G.
The debugging involve
deep analysis of issue at different layers at UE Modem like
L1,MAC,RLC,PDCP,RRC,MM, IP Layer etc. using proprietary tools of Intel
Mobile Communications and then narrowing down it to sub component
and redirecting it to Development Team for further analysis or fixing
it.
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Contribution
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Ø
Responsible for debugging UE Modem issue
related to Call Drop SMS, Throughput etc. on XMM7160 and 6360 platform
using Intel proprietary tools.
Ø
Prepare setup, understand call flows, EPC
implementation, installation and upgrade for LTE attachment.
Ø
Responsible for analyzing UE Modem Crash and
then narrowing it down to a Module level and then redirecting it to
the Development Team for further analysis.
Ø
Responsible in analyzing FW issue
on (LTE)/XMM6360 platform.
Ø
Field log analysis and
troubleshooting/analyzing problems.
Ø
Responsible for providing inputs to the
Customer Queries on different issues encountered during Field/Platform
verification
Ø
Responsible for providing onsite support to
Tier 1 Customer for debugging the issue encountered during Lab Testing.
Ø Preparing Weekly Report on the issues analyzed and syncing it with
offshore team.
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Skills
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Ø
C, Java script.
Ø
LTE 3GPP SPECS
Ø Perl Scripts.
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Project
Client: OCEUS
Networks. (LTE)
Duration: Dec,
2009 to January 2013.
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Description
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Long Term Evolution
(LTE) device software suite enables to rapidly introduce new LTE devices in
various form factors. It has Built-in Interoperability. Standards
Compliance with the latest 3GPP Rel-8 standards and Multi-Platform H/W and
OS Support that enables ease of integration on multiple platforms and
deliver High Performance.
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Contribution
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Ø
Complete ownership for requirement analysis,
design, development, verification and validating of SBc-AP, GTP interface,
Compliant with the 3GPP standards, validating all the incoming messages and
verification of messages sent.
Ø
Participation in review and analysis of low
level requirements.
Ø
Getting the requirement/code issues fixed.
Ø
Consolidated code coverage analysis, Purifier
and Bulls Eye tool.
Ø
Responsibility of module verification and bug
fixing.
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Mentoring and debugging support for team
members.
Ø
Knowledge Sharing of Process related
guidelines.
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Estimation of UTP Test Plans.
Ø Unit Test procedure development at functional and Integration level.
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Skills
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Ø
C, System Programming on Linux.
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CVS, GDB, IP, Routing, ARP.
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TCL/TK, Perl, Shell Scripts.
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Code verification Purifier and Bulls Eye tool.
Ø
Software Integration of High-level Application
APIs.
Ø Functional and Integration Testing of APIs, S1AP, Diameter and GTP
interface messages.
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Project
Client: BLADE Network Technologies (L2/L3 Switch)
Duration: Jan,
2007 to Nov, 2009.
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Description
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The Blade Rack Switch
delivers exceptional performance that is both lossless and low latency. It
delivers excellent cost savings as consider acquisition costs, energy
costs, plus its feature-rich design with when it comes to virtualization,
high availability, and its enterprise class Layer 2 and Layer 3
functionality.
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Contribution
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Ø
Preparation of Learning Documents for key
learning, after requirement analysis and design verification
Ø
Guiding the Team Members in module development,
Feature, functionality understanding preparation of different sample
topologies for various functionalities
Ø
Develop and test of following Switched
Technologies and features at System level:
o
IGMP
Snooping, SNMP
o
Redundancy
and High availability
Ø
Preparation of Detailed Configuration
guidelines for various features, to help team build up technical expertise
in those features.
Ø
Preparation of few process Work
Instructions/Checklists to enhance the code quality and reduce process
defects
Ø
Providing support for Bug reproduction and
fixing
Ø
Preparation of System Test Plan/Test
Report/Test Coverage
Ø System testing for Command functionality and Flow over CAMILLA and
PIGGY Board with all the interfaces (CLI, Web and SNMP).
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Skills
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Ø
C, System Programming on Linux.
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CVS, GDB, IP, Routing, ARP.
Ø
Shell Scripts, IP, IP Routing, IGMP, SNMP.
Ø Tools used SNMP-c, wire-shark, GDB.
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