SYNOPSIS

I am a sincere and dedicated individual having a great deal of ambition, always striving hard to avail acme of learning opportunities while giving my best to an employer. Possess excellent communication and presentation skills. Ability to sketch the plan, prioritize work and manage complex projects under aggressive timelines to lead and work in concert with different levels of organization. Adroit at learning new concepts quickly with belief in consistent improvement of my technical and interpersonal skills to benefit the organization, team and myself.

Telecom Domain Expertise

• E2E testing for GPRS, UMTS, LTE, SRVCC CSFB , Voice Over LTE VoLTE and Wi-Fi
• Intelligent Networks, Telecom Billing Online and Offline Charging System , BSS/OSS
• Policy Charging and Enforcement Function PCEF
• Policy Charging and Rule Function PCRF and Diameter Routing Agent DRA
• Quality of Service QoS
• 3GPP Mobility Standards and Interfaces Network Function Virtualization NFV for vEPC
• Deep Packet Inspection DPI for L4 to L7 layer
• Radio Channel Concepts and Air Interface Protocols/Procedures for WCDMA and LTE
• LTE Small Cell Solutions Femtocell
• SS7, SIGTRAN, CAMEL, INAP, MAP, AAA, Diameter, GTP, GTPv2 based s2a, RRC, RLC
• Routing Protocols TCP/IP, IPv6, DHCP, MPLS, BGP, OSPF and IPSec
• GSM, LTE EPC Network Planning, Design, Implementation and Operations
• Customer Escalation Focus for PS, CS and Video Call flows with excellent debugging skills.
• Test Design, Test execution, Test Automation and Defect raising, Defect tracking

TECHNICAL COMPETENCIES

• Tools : Wireshark, Tcpdump, Iperf, Ixia, Stargen, Lattice, SAE-SIM, minidiameterd, Snoop
• Application Programming: Unix/Linux Shell Scripting , iTCL/TK Expect, Python
• Languages : C Basic ,C Basic ,Verilog VHDL Basic
• Database : Toad for Oracle 8i, PL/SQL Basic , Sybase, Timesten
• Core Telecom Nodes : Cisco ASR5K-GGSN,SGSN,PGW,SGW, HeNBGW Femto
• Cisco QPS Broadhop PCRF
• Ericsson CS3.0 CS4.0 IN Prepaid/Online Charging System
• CCN, SDP, AIR, VS, MINSAT, EMM, EMA, HP/VXML-IVR
• Ericsson AXE BTS, BSC, MSS, MGW operations
• NSN SMSC, Flexi ISN GGSN, SGSN operations
• Operating System : StarOS , Solaris 9 10 ,Ubuntu Linux Windows/Mac
• Switches and Routers : Juniper Routers M5i ,M7i,M10i and Extreme BD Switches
• Interfaces :Gn, Gp, Gx, Gy, Gz, S5/S8, Rf, S6b, S2a, AAA, INAP, S1, Iuh
• 3gpp Specs :29.212, 29.060, 29.274, 23.401, 24.008, RFC 3588, RFC 4006

PROFESSIONAL PROJECTS

Confidential

• Project Details: ASR5K GGSN PGW GnGp eHRPD Testing Gx/Gxa interface with PCRF
• Key Deliverables:
• Worked on StarOS release 12.0, 14.0, 15.0, 16.0, 17.0, 18.0
• Create test plans for various customer requested or 3gpp mobility spec compliant features.
• Manual testing and validation of Software protocol at Functional and System test level.
• Defect logging and defect tracking of issues found during Functional Testing ensuring quality.
• Writing, reviewing and automation of Test Procedures for all manual cases using TCL.
• Reproducing, Debugging customer reported bugs on functional setup and verification of same.
• Designed and build mini system test setup for Gx testing having real PCRF integrated with SSI plaform of ASR5K and support to Redundancy and Failover-Schema.
• Feature interaction testing w.r.t. GnGp 3G/4G/wifi handoff and Session Recovery Support.
• Involved in Real Equipment Testing, Protocol Testing, System Testing, Feature Acceptance testing, Interoperability testing, Performance Testing and Compliance Review.
• Testing Network management and 3GPP Rel 4,5,7 QoS Management Features viz. Enhanced Charging Services ECSv2 - SPI DPI ,AAA.
• GPRS/UMTS/LTE-A/Gx Feature Mentor for new joiners.
• Automation Suite Run, Scrubbing, Regression Sanity along with Fixing Script Issues.

Confidential

• Feature is about Volume usage reporting on Gx interface when data threshold is breached which is implemented differently for Korea Telecom and Rest of the World Operators.
• Tested Regression plan for the feature implemented on 3GPP-29212 Rel 7 and Rel9 spec.
• Created Enhancement Test plans having coverate to support on Inter Chassis Session Recovery ICSR and Tested same for KT, AT T and Orange.
• GSU, USU, Monitoring Key AVP Checks at Gx and Automation of same using TCL.

Confidential

• Feature is about QoS Redesign at SessMgr of ASR5K in Rel 14.0 where implementation of APN-MBR and EARP IE's at GTP Message level along with QoS information AVPs at Gx interface for 3G and GnGp GW.
• Checked APN-MBR level data enforcement for UL-DL data using Iperf.
• Checked ARP to EARP mapping at Gx interface .

Confidential

Feature is about IPv6 P-CSCF address discovery based on IMSA service in ASR5k with Gx interface where same is requested in PCO of GTP message .

Confidential

Feature is about applying and modifying Content Filtering dynamically from PCRF for ASR5K GGSN and PGW based on 3GPP 29212 Rel 9

Confidential

Feature is about controlling charging related information for multiple PCC rules from PCRF and accelerate data packet processing to enhance performance based on 3GPP 29212 Rel 9.

Worked on DPI for L4 to L7 traffic like HTTP using pcap from customer.

Confidential

• Feature is about time usage reporting on already existent Volume reporing on Gx interface where new AVP cc-time was introduced as for reporting time usage on time treshold breach.
• Interacted with Dev and Customer ASE for use case understanding.
• Extensive Feature Test plan creation with VoGx and TRoGx interactions .

Confidential

Feature is about applying Local Policy when PCRF is unavailable due to some failure or error.It is designed based on 3GPP 29212 Rel 10 spec for ASR5K based GGSN and PGW.

Confidential

• Feature is about controlling charging parameters and redirection of different PCC rules dynamically from PCRF and contolling charging action parameters dynamically designed for ASR5K PGW and GGSN based on 3GPP 29212 Rel 9 .
• Created test plans with coverage to conditional ,negative and spec compliant scenarios to validate GGSN and PGW response.
• Testing QoS management features viz. Enhanced charging services ECS ,Dynamic credit control applications DCCA , Multiple PDN support dynamic PCC, etc.

Confidential

• Managed to complete IOT AIO QPS with ASR5K within record 3 weeks timeframe.
• First in MITG QA to deploy it on cloud instead of Blade Server for testing VoLTE hence reducing cost.
• Creating Policies in Policy Builder and Control Centre of QPS and checking operational issues.

Confidential

• Feature is about Network provided Location Information NPLI viz ULI, ULI timestamp and UE TZ on Gx interface when requested from AF for emergency calls and other required instances by operator.It introduced New Event trigger on Gx which is implemented based on 3GPP 29212 Rel 11 specification.
• Created and Tested the test plan on SGW ,PGW ,SGSN and GGSN for new IE called retloc going as part of extended common Flags in GTP messages.
• Gx functionality is supported based on CLI for netloc support in IMSA service.
• Testing for CDRs and Rf Records for PGW and GGSN.

Confidential

Feature is about Inter-RAT handoff between Wifi /LTE/EHRPD supporting mobility between GTP based S2b between ePDG and PGW/GTPv2 bsaed S2a and S5/S8 to allow PGW to preserve IP address when the user moves between WiFi and LTE.