ABHISHEK RANJAN

• Responsible for system integration testing to figure out potential bugs and created python scripts to automate testing scenarios.
• Responsible for timely delivery of packages and containing customer escalations in a timely manner. Supporting customer with test case execution and solving issues faced by customer in their test environment.
• Supported in customer acquisition by completing many customer demos in a time constraint environment, by answering customer's technical and non-technical queries .
• Responsible for feature development and issue fixation in roadmap and JIO projects some of them being DDDSU semi sync pattern, DSUU pattern, UL PTRS,RRC Inactive,ANR Analyzed and fixed many issues wrt developed or already existing features .
• Lead and guided small team of engineers and senior engineers, supported them by to creating a learning environment for them and by providing on job training whenever required.

• Creating Protocol scripts for customer for manual use .
• Debugging Application and script issues to support automation at Customer's end.
• Testing new requirements for the customer before releasing a new build to be used at customer's end .
• Debugging Network/ UE issues to support testing at the customer's end.
• Debugging L1,L2 , L3 issues and figuring out bugs to support modem verification and improve the stability of the Keysight Product.
• Test case Automation using Python,command lines and SCPI commands .
• Creating Tools using python for internal use.
• good hands on in debugging NW and UE issues using Sanjole.

handle and train a team of 4 members along with Team tasks

• Currently working for Keysight at Qualcomm site to support 5G deployment at Modem end.
• Creating Protocol scripts for customer for manual use .
• Debugging Application and script issues to support automation at Customer's end.
• Testing new requirements for the customer before releasing a new build to be used at customer's end .
• Debugging Network/ UE issues to support testing at the customer's end.
• Debugging L1,L2 , L3 issues and figuring out bugs to support modem verification and improve the stability of the Keysight Product.
• Awarded as the best employee for the Year 2019-2020 based on Individual performance and Customer's Feedback.

• Managed Team of 10 Members to support market quality .
• Conducting field tests , lab tests and reproducing field and customer issues
• Supported OPPO Vietnam, Bangladesh, Thailand and Indonesia.

• Executing test cases such as , IMS registration,SRVCC, CSFB , SIP to SIP calls, Throughput, Mobility, Carrier Aggregation, Conference CSFB calls and IRAT scenarios.
• Test case creations Track issues with development team using IBM RTC QXDM Log analysis for troubleshooting/analyzing issues and improving the stability of the product Responsible for testing IMS solutions for services such as Voice over LTE (VoLTE) provided by Qualcomm and MTK Good Understanding of Phy / MAC/ RLC / RRC layers.
• Skilled in debugging UE issues by analyzing QXDM logs and finding the root cause in the right sub-component in the protocol stack .
• Reproducing issue reported by Field Test Team and verifying the fix Well-versed with protocol test simulators like Keysight, Anritsu.

• Optimization of existing & new network which includes KPI analysis such as RSRP, RSRQ,RSSI,SIN RAB-RRC setup & retention , call drop, pilot pollution (Inbound-Outbound), BLER &Ec/No, handover & hand off problems (Softer, Soft, Hard, IRAT), hand off overhead, server inconsistencies problem, power control using drive logs.
• Successfully delivered the cluster Drive test results for best RSRP and SINR.
• Validation of Markets with Carrier aggregation.
• Throughput troubleshooting for 2 CA and 3 CA.
• Perform the Download and Upload throughput tests on each sector of the site and make sure to get maximum achievable DL & UL speeds at the best point of each cell with the best BLER, & SINR Parameter values.
• Verification of SIP to SIP call flow by conducting conformance, stress and regression testing.
• Network strategy planning for Sprint.
• Drive Test log files analysis.
• Perform the analysis on Call Failures using layer 3 messages.
• Analyzing logs using tools to produce statistics.
• Voice Quality analysis using PESQ and POLQA algorithms.
• Data Layer3 Testing: Prepare test plan Design algorithms for various technologies (GSM, UMTS, HSPA, and LTE) Measurement of Data Session Setup Time, Task Latency, Radio Resource Allocation.

• Responsible for Network Performance Improvement by optimization.
• Carrying out optimization while analyzing Drive test reports.
• Analysis of Air Interface Drive test Log files for completely analysis of call drops, BCCH interference, MAL Frequency interference, Handover Issues, sector swap, hardware issues.
• Suggestion and rectification for repeater and IBS based issues and complaints.
• Neighbor optimization with the help of Map Info Professional and OMCR Report.
• Conducting physical optimization of sites relating to height, tilt, azimuth, etc to help network perform better.
• Analyzing & rectifying Neighbor discrepancies, non-symmetrical Neighbours, adjacent BSIC, Co-CH and Adj-CH neighbours, and abnormalities in HO synchronization for old sites.
• Handling customer complaints using the technical and the communication skills in order to satisfy the customers.
• Helping the sales team in increasing the utilization of the low utilization sites.
• Performing cluster drives in order to rectify the weak parameters (RX level, quality and C/I).
• Assisting the sales team with the new sites suggestions.
• LTE band testing using IP ping, FTP, HTTP and WAP ping tests.

• 3G / UMTS DT (RF Drive Test), DATA ANALYSER, C0-0rdination & FIELD OPTIMIZATION Optimization of UMTS sites based on Coverage_RSCP, Quality_Ec/Io, Pilot pollution.
• Physical optimization of existing sites.
• Finding out the Interference problem & rectify the same.
• Proposing new sit after analysis of coverage issue. Improving Coverage by skewing sectors, down tilt/Up tilt, power increase/decrease by using better antenna gain.
• Site Auditing and Verifying Hardware, Tilt, Antenna height and Orientation, According to the site database.
• Analyzed the Drive test log files using TEMS Investigation.
• Find the swap, Interference in the sites during the optimization & resolve the swap Missing neighbors, Soft Handover using drive test data.