N Rajesh A

Software Engineer

Andhra Pradesh, India17 yrs 9 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

8 years in Mobile Protocol R&D at Samsung
Expert in LTE and NAS module development
Handled major operator requirements globally

Stackforce AI infers this person is a Mobile Telecommunications Engineer with expertise in LTE and protocol development.

Contact

Skills

Core Skills

LteMeasurement HandlingRrmMobility AlgorithmsFeature DevelopmentNasMobility ManagementMme Nas

Other Skills

Dual Sim RF Grant HandlingDSP ConfigurationRF ConfigurationRRCHandover ManagementIdle Mode ProceduresConnected Mode ProceduresIssue AnalysisTestingConnection ManagementCSFBSRVCCOSS NOKALVA Tool IntegrationSecurityAuthentication

About

● A member of CMC/Shannon team in Mobile R&D division-Samsung’s Modem team. ● 8 years of experience in Mobile protocol Research & Development, responsible for handling various modules such as NAS (CC, SS, MM and GMM modules), 4G RRM modules in multimode chipset of Samsung Modem. ● Also have work experience on LTE core network such as MME (Mobility Management Entity). Worked on design and implementation of various latest features such as CSFB, SRVCC, Carrier Aggregation, IRAT measurements. ● Travelled to Paris to handle and support ALU IOT for shannon modem chipset. ● Travelled to Shanghai and Zhuhai to handle MEIZU and WIND operator requirements at client's location itself. Travelled to Korea, Poland and Beijing for base camp to stabilise shannon modem performance related to call and throughput performances on various operators. ● Good experience in 3GPP specification and protocol development. Also good in preparation of product specification documents, HLD and DLD, test specification document. ● Responsible for feature implementation, issue analysis, debugging, and fixing commercialisation issues in NAS, 4G RRM modules for flag ship models like Samsung Galaxy Series, Note Series and many other models based on Samsung chipset. ● Handled requirements and development for operators like AT&T, Verizon, T- Mobile USA, SKT, LGU, MEIZU, WIND and various other operators.

Experience

17 yrs 9 mos

Total Experience

3 yrs 6 mos

Average Tenure

6 yrs 9 mos

Current Experience

Samsung r&d institute india - bangalore private limited

LTE L1 Engineer

Aug 2019 – Present · 6 yrs 9 mos · Bengaluru Area, India

Currently working on LTE L1 Layer.
▪This module is responsible for all type of measurement handling (Intra, Inter and Irat).
▪ Also it is responsible for Paging and Drx configuration and handling.
▪ Dual Sim Rf grant handling functionality.
▪ DSP and RF configuration

LTEMeasurement HandlingDual Sim RF Grant HandlingDSP ConfigurationRF Configuration

Commscope

Layer 3 (RRC and RRM) Small Cell Developer

Aug 2018 – Aug 2019 · 1 yr · Bengaluru Area, India

Currently working on RRM functionalities related to mobility algorithms and all type of handovers (such as Intra, Inter, and Inter RAT handovers).

RRCRRMMobility AlgorithmsHandover Management

Samsung india r&d software operations

4G Radio Resource Management (RRM) Developer

Apr 2013 – Sep 2018 · 5 yrs 5 mos · Bangalore

Role of RRM module in protocol stack is to handle Idle mode Procedures (Boot up frequency scan, cell search, cell camp, Cell Selection, Cell reselection criteria evaluation, Measurement and search of Intra,Inter, Irat Frequencies, Idle mode DRX handling) and Connected mode procedures (such as Measurement Configuration, Event Handling, Handovers, CDRX).
My Role in this Project:
● Involved in developing new features, Operator requirements and optimizations based on field issues. Apart from that handled all development and commercialization issues.
● Issue analysis of failed test cases, fixing and verification across various tests: PCT, PTCRB, AT&T Verizon.
● Testing fixed code on unit testing and integration test setup for possible side effects on other operations.
● Regular updations of HLD, DLD and MSC documents based on latest features and design modifications.

Idle Mode ProceduresConnected Mode ProceduresFeature DevelopmentIssue AnalysisTestingRRM

Samsung india r & d software operations

3G, 2G NAS Developer

Nov 2010 – Mar 2013 · 2 yrs 4 mos · Bangalore

NAS in protocol stack is responsible for handling many functionalities such as Connection Management and Mobility Management. Mainly Connection management involves all call related services (Normal call, Video call and DTMF services), Supplementary services (Call forwarding, call waiting, call barring etc) and SMS services (Normal SMS, MMS and cell broadcast messages). Where as Mobility management functionality includes Attach, Detach, NAS authentication and security mode procedures and many more functionalities.
My Role in this project:
● Main role in this project is to handle Call Control (CC) and Supplementary Service modules (SS), Mobility Management (MM) and GPRS Mobility Management (GMM).
● Design and implementation of new features like CSFB, SRVCC.
● Many optimization's to improve call performance KPI.
● Integrated OSS NOKALVA TOOL with shannon modem for encoding and decoding Supplementary Service (SS) messages.
● Commercialization support for CMC221 chipset for Korean operator's like SKT, KT and LGU. Also involved in handling field, operator and optimization related issues.
Involved lab testing of various tests: PCT, PTCRB, AT&T Verizon. Issue analysis of failed test cases, fixing and verification.
● Testing fixed code on unit testing and integration test setup for possible side effects on other operations.
● Regular updations of HLD, DLD and MSC documents based on latest features and design modifications.

Connection ManagementMobility ManagementCSFBSRVCCOSS NOKALVA Tool IntegrationNAS

Kyocera wireless india

LTE MME NAS Developer

Jul 2008 – Nov 2010 · 2 yrs 4 mos · Bangalore

MME NAS is responsible for handling many functionalities such as Mobility management, Security, Authentication, Handovers and load balancing, Mainly Mobility management involves Attach, PDP allocation and deallocation, Resource handling and so on.
My Role in this project:
● Involved in design and implementation of MME NAS (Non Access Stratum) in LTE technology.
● Developed MME NAS (Core Network) prototype and integrated same with real time eNodeB (Kyocera’s own eNodeB).
● Showcased working prototype held at Amsterdam’s 3GPP conference.
● Handled design, development, unit testing and integration testing of MME NAS with eNodeB. Thorough understanding of 3GPP NAS specifications.
● Prepared HLD, DLD and Msc’s for implemented prototype.
● Integrated OSS NOKALVA tool to MME stack to encode and decode 3GPP NAS messages.