Networking Protocols & Software Engineer

Summary

 Wireless and Networking protocols engineer with 4 years of professional experience in networking industry.

 Strong C/C++ programming experience with over 7 years of experience working on several academic and professional projects. Good expertise in scripting languages including Shell / Perl scripts.

 Strong expertise with NS2 network simulator with experience in implementing a new routing algorithm as well as LTE RLC layer.

 Work experience for protocols in Layer 2 and up in the OSI stack including work in LTE (Long Term Evolution) networks, 802.11/GSM/UMTS, TCP/IP protocol stack, Routing/Switching algorithms, Security and Authentication Mechanism and Mobile IP fundamentals.

 Author of 18 provisional patent applications and 2 paper publications in IEEE Communications magazine and WCNC conference for networking related protocols.

 Excellent communication and interpersonal skills. Have demonstrated creativity, willingness and ability to quickly learn new things, excellent analytical skills, strong work ethic.

Key Technical Skills

Programming: C/C++, Socket & multi threaded programming,

Scripting Languages: Shell, Perl, Tcl/Tk,, knowledge of HTML,Python and PHP scripting for websites.

Wireless Protocols: LTE, GSM/GPRS and UMTS, 802.11 a/b/g/n/s/e, ad hoc networks (MANETs).

Simulators: NS2, MATLAB, OPNET.

Operating Systems: Linux / Unix, FreeBSD, Windows, knowledge of RTOS systems.

Networking Protocols:

 TCP/IP protocol stack, UDP, IPv4-IPv6,

 Routing Protocols (BGP, OSPF, RIP, IS-IS)

 Security & Authentication Protocols (EAP, EAPOL, IPSec, IKE, RADIUS, DIAMETER),

 Mobile IP protocols (MIPv4, PMIPv6, DSMIPv6),

 Bridging/Switching & 802.x protocols knowledge, (MPLS, STP,RSTP,802.1x, 802.3)

 DNS, DHCP, VPN and other Application level protocols (FTP, TFTP, SFTP, SIP, VOIP concepts etc).

Professional Experience

 System Engineer June 2007 to Present

Marvell Semiconductor Inc., Santa Clara, CA

 Perform research and generate intellectual property (IPRs) on Evolved packet core system (LTE) wireless networks and its interworking with various different access networks including WiMAX and Wi-fi

 Work focused on generating ideas for establishing Layer 3 connectivity for a terminal to the core network.

 Represented Marvell as a standards delegate for system architecture (SA2) and core network (CT1) working groups of the 3GPP forum. Focused on the LTE NAS layer.

 Was able to successfully push the essential ideas into the standards and also to stand firm on the strategic position.

 Monitored and contributed in the IETF forum in the MIPSHOP, NETLMM and MEXT working groups.

 Authored/Co-Authored 16 provisional patent applications.

 Was a key contributor in implementing the LTE RLC layer in the network simulator written in C/C++.

 UMTS/GSM Software Applications Engineer Jun 2006 to May 2007

Qualcomm Inc., San Diego, California

 Acted as an interface between developers and the customers as well as testing team in providing technical support for the UMTS/GSM based on software written in C/C++.

 Work concentrated on the TCP/IP stack and PPP protocol for establishing a data connection with the network.

 Analyzed call logs, call flows, ethereal captures, tcp dumps, analyzed and debugged C/C++ code using JTAG debugger to locate the problem, performing tests by running various test cases for reproducing the problem.

 Following up with the developer & customer to successfully generate a fix for the problem and resolve the issue.

 Worked closely with the development team and testing team, for implementation of new features as well as performing regression tests on them to find an issue in the software.

 Research Engineer – Co-op Jan 2005 to July 2005

Nokia Research Center, Irving, Texas

 Part of Nokia’s IEEE 802.11 TGs team focused on development of routing and security protocols for 802.11s Mesh Networks to allow seamless communication between 802.11 wireless devices.

 Co-Authored 2 provisional patent applications and researched various routing and security algorithms for ad hoc wireless networks and their applicability to the deployment of Mesh networks.

 Contributed ideas towards internal technical reports and also contributed to a paper on Mesh Networks to appear in Special Issue of IEEE Communications Magazine.

 Other responsibilities include evaluating feasibility of other proposed protocols depending on implementation issues, advising the team likewise, and preparing technical reports and presentations.

 Intern July 2004 to Oct 2004

Nokia Research Center, Irving, Texas.

 Work focused on implementation of Nokia’s IEEE 802.11n concepts into Nokia proprietary simulator written in C++ to compare the throughput improvement obtained due to deployment of 802.11n.

 Understanding the 802.11n (draft) standard and analyzing the solutions proposed by Nokia 802.11 team and implementing it into the simulator.

 Analyzed the Nokia 802.11 simulator and understood the working and logic behind it.

Education

 Master of Science in Electrical Engineering Dec 2005

Southern Methodist University, Dallas, Texas.

 Bachelor of Engineering in Electronics Aug 2003

K.J. Somaiya College of Engineering, Mumbai University, India.

 Diploma in Electronics & Telecommunications Engineering May 2000

Vivekanand Education Society Polytechnic, Maharashtra State Board, India.

Key Academic Projects

 Master’s Thesis: Hybrid Routing with Periodic Updates (HRPU) in mesh networks.

 Proposed a novel hybrid routing algorithm called HRPU for Wireless Mesh Networks which improves the throughput of a mesh network when deployed with HRPU as compared to with standard existing protocols.

 Implemented HRPU in NS2 Network Simulator and demonstrated its performance improvement..

 Tools used for implementation was NS2 simulator written in C++ and implemented on Fedora core LINUX, Shell programming was used for analysis of results and MATLAB was used to generate the plots.

 Seamless Integration of Ad hoc and Infrastructure modes of 802.11

 Proposed a novel scheme for integration of Ad hoc and infrastructure mode by enabling the node to monitor other channels when not in communication.

 Implemented a part of protocol onto Atheros chipset using iwlist Linux tools and implemented the functionality of nodes able to switch to different mode. Implemented using C++.

 Implementation of a mail client using SMTP protocol

 Implemented a client –server program for SMTP mail protocol using Socket Programming in C.

 Created a multi-process and a multi-threaded server to accept simultaneous connections.

Papers and Publications.

 “Mesh WLAN Networks: Concept and System Design”, IEEE Wireless Communications Magazine, April 2006, Volume 13, Issue 2.

 “Hybrid Routing with Periodic Updates (HRPU) for mesh networks” in Proceedings of Wireless Communications and Networking Conference (WCNC April ‘06).

 Authored/Co-Authored 18 provisional patent applications in the field of wireless networking focusing mainly on Layer 3 connectivity for a mobile device in 3GPP.

 Paper on “Mathematical Modeling of TCP”, describing different analytical methods of analyzing TCP throughput.

 Paper on “TCP over Wireless Networks”, describing algorithms for performance of TCP in wireless networks.

 Authored/Co-Authored 3 IETF drafts on mobility protocols on mobility of a terminal.

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