Devendra Sharma

Senior Consultant

Email: devendra.sharma1976@gmail.com

mobile: +44 7832345579

 

Expertise

• Wireless technologies specially GSM/GPRS and UMTS Mobile Communication
• Specifications study and requirements engineering
• Protocol stack design, development, integration and testing
• UMTS Layer 2 design, development, integration and testing
• Task planning, delegation and full implementation
• Conducting IOT( Inter operability Test )
• Thorough understanding of UE protocol stack specially the signalling
• Team leadership and project management
• Training teams on soft skills
• Parameter optimization, upgrade, maintenance  and testing of NEC/Nokia RAN
• Excellent Communication Skills

Technical Skills

Wireless Standards:

• UMTS-FDD (URLC, UMAC and URRC), GPRS ( LLC, RLC)

·         TETRA( LLC, MAC)

Languages:

• SDL (good knowledge), UML ( basic understanding )

·         C (expert), C++ (good knowledge)

• UML

Tools:

• Telelogic Tau (expert),
• ClearCase (expert),
• VSS( expert )

Equipment:

• Anritsu, Anite and R&S protocol test unit( expert )

Platforms/OS:

• UNIX (expert), Windows (good knowledge), Linux (good knowledge)
• ARM (basic knowledge), VxWorks (basic knowledge)

Education

Regional Engineering College, Surathkal, Mangalore University, India

 

Bachelors Degree in Electronics and Communication Engineering

 

 

 

 

 

Project Experience

GSM/GPRS stack Development, Samsung, India (1998-1999)

Position:

Software Engineer - Testing and enhancement GSM/GPRS software

Project Brief:

Project involves understanding the existing software architecture for GSM/GPRS and re-engineering or enhancing most of it specially the layer 2. Project also involved the integration and testing of the enhanced software.

Role:

• Actively involved in the enhancement of the layer 2.
• Integration and regression testing of the software before the release.

 

 

UMTS stack development, Samsung, India (199-2001)

Position:

Software Engineer – Specification study, High level and low level design, Coding, Integration and Testing.

Project Brief:

The project involved the complete UE stack development for UMTS based on the current 3GPP specifications. However the NAS component was used from the already existing GPRS code with some enhancement based on the UMTS requirement. The development included the design and development of URRC, URLC, UMAC and UPHY using the SDL tool and C language.

Role:

• Directly responsible for the design, implementation, testing and integration of URLC.
• Read the required 3GPP specification or standard for URLC and UMAC. Subsequently designed and implemented the URLC.
• Designed and implemented the interface of URLC with other protocol layers.
• Modular testing was done using an in-house proprietary test tool. Fixed many bugs in URLC and the interface with the other layers and made some enhancements. This resulted in a more reliable and stable software which led to the successful integration of the UMTS stack.
• Defined some basic test cases to test the functionality of the URLC and conducted the testing by creating the dummy messages and the data units as defined in the test cases.

 

TETRA Protocol Stack development,  IFR systems, UK (2001-2002)

Position:

Design Engineer – Specification study, design, implementation and testing of the LLC and MAC module.

Project Brief:

The project involved the design, implementation and testing of the base station specific TETRA protocol stack. The software was developed for the IFR’s TETRA test unit which is used for testing the TETRA user equipments. Telelogic SDL tool was used for the software development, compilation and code generation. Host testing was also carried out using SDL tool.

Role:

Designed, implemented and tested LLC and MAC for TETRA using the SDL tool.

 

Dual Mode UE stack development, Samsung UK (2002-2003)

Position:

Senior software engineer 1- Complete Software Development Cycle.

Project Brief:

The project involved the complete dual mode UE stack development for UMTS and GSM/GPRS based on the current 3GPP specifications. The development included the design and development of all the UMTS layers and GSM/GPRS layers C and C++ language.

Role:

• Designed, implemented and integrated RABM for UMTS using C language.
• Designed, implemented and integrated LLC for GPRS from scratch. The implementation was done using C language. For integration defined and designed the interface of LLC with other protocol layer of GPRS.
• Carry out the entire conformance testing in order to check the stability of the LLC thus fixing the bugs and retesting it.
• Completely responsible/incharge for the UMTS conformance testing on R&S, Anite and Anritsu in a certain deadline period.
• Define a procedure for static KPI testing for the Samsung’s dual mode software.

 

 

NEC/Nokia RAN  Enhancement, Upgrade and Maintenance, Hutchison 3, UK (2005-2006)

Position:

Senior Consultant – UTRAN design, optimization and testing

Project Brief:

Project involved enhancement, upgrade and the regression testing of the NEC/Nokia Node B and RNC. Upgrade of Node B and RNC involve latest version of software, new hardware components or cards. After the upgrade the project involve the regression testing of the Node B and RNC according to the Hutchison 3’s agreed test plans.

Role:

• Design and carry out parameter optimization, design new features for NEC RAN to achieve certain functionality.
• Led the upgrade of the NEC Node B and RNC on receiving the latest version of software or hardware i.e. New Node B and RNC roll out( HW and SW )
• Led the regression testing after any upgrade of NEC/Nokia Node B or RNC according to the Hutchison 3’s test plans. Investigate all the failures.
• NEC/Nokia RAN defect management. This included following-:

1.      In case of test failure during the regression testing analyse the network and UE logs and raise the defect on UE (vendors) or RAN (NEC or Nokia) through mercury test director.

2.      Follow the defect raised and get the fix from the corresponding source and retest the fix. Close the defect if the fix passes the particular test case.

• Supports UE team in identifying network issues found during the UE testing.
• Maintain resources by allocating and de allocating the sectors of NEC/Nokia Node B and RNC to the test engineers from different vendors.
• Patching up the nethawk on the particular NEC Node B in order to provide access to the network trace to the test engineers.