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| Desired Position: |
Wireless System Design Development Test |
Job Code: |
WDN-2-16178 |
| Reply to Email: |
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Website: |
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| Preferred Location: |
With in the United States |
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| Posted on: |
2007-06-23 |
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| Qualifications: |
Srinivasan (Srini) Gottumukkala
14150 SE 17th Place, Unit B-5
Bellevue, WA 98007
Cell: 510 461 8686
srinivasan_g@yahoo.com, srini_aol@yahoo.com
Objective
• Seeking a challenging position in Wireless/Telecommunication Architecture/Networking software development / System Design and Test
Skills
• Protocols: UMTS, GSM, GPRS (data services over GSM), RRC, Iupc, RLC, MAC, LLC, SNDCP, IS-95, IS-99 (data services over IS-95), 3GPP, 3GPP2, Global Positioning Systems: A-GPS, OMA SUPL, IS 801, RRLP, ATM, SS7 and ISDN, TCP/IP, IS-136, VoIP, H323 and CDPD.
• Network Management: SNMP, GDMO, CMIP, Q3 mediation between Base Station Subsystem and OMC-R, Management Information Base (MIB)
• Systems: UMTS, Corporate GSM, GSM based cellular system, CDMA based cellular system (NORTEL)
• Operating Systems: Solaris 2.5, SunOS 4.1.3, Linux 2.x, UNIX operating system on SUN, HP and IBM workstations, WINDOWS2000, Windows XP Pro, Windows NT 4.0
• Languages: C, C++, Perl, TclTk, Unix Shell scripts, FORTRAN, SIMSCRIPT, PASCAL
• IDEs: Visual C++, SUN Visual Workshop
• Packages and Tools: PROPHET (a C++ tool kit and library for modeling and simulation), ATTOL, SIMAPP (applications simulator), Visual C++, ClearCase and CVS (for configuration management), SDL, GDMO PRO, ORBIT, O.N.E. Foundation Tool kit, Microsoft Visio, Network Simulator NS-2
• Project Management and Scheduling: Micro Soft Project Plan
• Environment: Exceed and Xvision
• Implementation experience of Network Management functionalities
• Expert in modeling, performance analysis & design of wireless systems
• Well acquainted with layering, delay models, routing and flow control in data networks
• Well-conversant with object oriented programming concepts
Experience Summary
• A total of 16 Years of work experience including 3 years at Qualcomm, 2 years at T-Mobile Engineering, 3 years at Opuswave Networks, A Siemens Information and Communication Mobile Networks company; 5 years at Nortel Networks in the area of Cellular/Telecommunication Protocols/Networks and 2 years at SiRF Technologies.
• Senior Principal Wireless Staff Engineer at T-Mobile Engineering, Bellevue, WA from Aug 2005 to till date.
• Senior System/Software Architect at SiRF Technologies, San Jose, CA from Jan 2003 to July 2005
• Senior System Software Architect: Design and Tool Developer at Qualcomm, Campbell, CA from Jan 2002 to Dec 2002
• Senior System Software Engineer (OAM & P) at Opuswave Networks, A Siemens Information and Communication Mobile Networks company, Colorado Springs, CO since March 2000 to Dec 2001 as a full time employee
• Senior Software Engineer, BSC 2G/3G and GPRS development Group at Nortel GSM Wireless Networks, Paris, France from June 1998 to Feb 2000
• Senior Software Engineer, Silicon Automation Systems Limited, Bangalore, India from Jan 1996 to June 1998. This includes onsite project at Nortel Broadband Networks, Richardson, TX
• Project Associate, Dept. of Electrical Communication Engineering, Indian Institute of Science, Bangalore from Aug 1994 to Jan 1996.
• Software Development and Research (R&D) Engineer at Bharat Electronics Digital Communication R&D labs, Bangalore from April 1991 to July 1993.
Education
• Advanced Research in the area of High Speed Computer Networks: Performance Modeling, Analysis and Simulation of High Speed Computer Networks using Stochastic Process, Markov Chains and Algorithms.
• M.S. (Master of Engineering) in Computer Science and Networks from Dept. of Electrical Engineering, Indian Institute of Science, Bangalore, India
• B.E. (Bachelor of Engineering) in Electronics Communications Engineering, from Andhra University, Visakhapatnam, India. Electives and Specialization at Indian Institute of Technology, IIT, Chennai
Software Training
Development of Quality Software; Software Production Process; Software Reviews ; Object Oriented Analysis & Design; Unit Integration Testing; System Testing; Project Management; Domain training in Cellular Networks; Unix Network Programming; TCP/IP; Effective Communication; Presentation Skills and Interviewing skills; and Team Building & Personality Development Workshops.
Project Details:
1. UMTS location services and Protocols in 3G Cellular Networks
Work involves contributions to Requirements, System Specification as per 3GPP and OMA standards, Design, Development, Lab testing, Field Trial at T-Mobile Engineering Division for developing A-GPS (Wireless Assisted GPS) protocol for UMTS (Universal Mobile Terrestrial System) Radio Access Network (RAN). Design and Development of New location technologies based on 3GPP and OMA (Open Mobile Alliance) standards. Design specifications and Development of A-GPS protocol for E911 services. Feasibility study of A-GPS based on Control Plane and User Plane (SUPL) architectures. Traffic evaluation and Performance Modeling of A-GPS. Design and Implementation of flavors of 3G to 2G Inter System handover for Emergency Location Services. Worked closely on A-GPS UMTS handset requirements and testing with respect to protocol conformance and minimal performance.
2. Server based RRLP/IS-801/3G based Location Services in the Wireless Networks (GSM/CDMA)
Design of RRLP (Radio Resource Location Protocol) messages from Location Server to the Location Client for SiRF Product development. Designed and implemented interfaces for system involving Client /Server for Location Based Services. Design of Interface Controls between the various modules in the Client Server based Location technology Architecture. Implemented Network based and mobile based Location services on RRLP. Involvement in developing new protocols/technologies for location services: Coarse location technology. Design of a Location server capable of handling multiple Location protocols (RRLP/IS801/RRC). Modeling, Simulation and Performance of End to End Client Server based Location Systems. SNMP agent design and development on Location Server
3. IS 801 call flow Testing using the Call Flow Tester, CFT
Call flow testing of IS 801, a GPS standard. Worked on Call flow Tester a TclTk based tool to automate and execute the IS 801 call flows. CFT is designed to execute and test both the positive and negative test cases.
Wrote test plans, designed test cases and executed the test scripts
Wrote TclTk based test scripts which are used by CFT to Test the PDE, the Position Determination Equipment.
Wrote TclTk Test script templates for the PDE Harmonized IS-801 Call flows, tested and executed positive and negative test cases using CFT with different configurations and settings
Team size: 2, Duration 3 months, Client: SnapTrack Engineering a Qualcomm company, 675, Campbell Technology Park, Campbell, CA 95008
4. Network Management (SNMP & GDMO) in Base Station Wireless system & OMC for the Corporate GSM Network, which is an integration of GSM, PABX and IP using Voice over IP technology
The Corporate GSM system is a multi-service SM/IP based wireless access technology, using the H.323 protocol, developed to provide high capacity voice and multimedia services for corporate users. Operating in the standard GSM frequency bands. The Corporate GSM system implements a wireless access system, using a GSM air interface, that interfaces into IP-based network infrastructure components, providing voice, fax, packet data and network management services.
The work contribution involves SNMP, GDMO standards, CMIP and Q3 Mediation between Base Station Network and OMC-R, writing Management Information Base (MIB) and implementing features (GPRS) in to the OAM&P system of the Base Station Network. Design and Implementation of Configuration Management, State Management, Database Management, Software Management, Event reporting and Alignment Procedures for the CGSM. Part of the team in successfully launching the system for two major customer trial releases and participated in design and implementation of features Mo |
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