Nasim Jafarian

• Providing End-to-End technical solutions for "data/voice/sms" services of IOT devices according to client requirements.
• Studying latest 3GPP standard documents for network planning and network optimization.
• Solving complex network issues as highest level of network support.
• Working with marketing team on list of potential activities and solutions.
• Fulfilling POC for new services and delivering to Marketing team which can be presented to customers.
• Developing technical presentations, proposals and HLD.
• Performing technical presentations to customers.
• Participating in knowledge transfer, documentation and information sharing.

MVNO, MVNA company

https://www.truphone.com/

Competence and responsibility include performing the following but are not limited to:

• As packet core engineer in charge of planning and configuring new services in SSF (affirmed solution) as GTP signalling gateway, PGW (affirmed solution)/Gn-DNS /Radius/ PCRF / ePDG (voWIFI).
• Launching 5G NSA solution, including changes on APN entries service types, enabling enhanced features on PGW level, defining new PCRF policies.
• Delivering new IOT projects via IPSEC tunnels and BGP over IPSEC set up from PGW (as tunnel terminator) to customer servers, providing external radius connection over IPSEC tunnel.
• End to end QOS and DSCP handling in Truphone Network.
• Optimization of GY transmission timers and providing p-cscf redundancy solution for voLTE service
• T-shooting lots of problems regarding to voLTE service, like extra dedicated bearer creation on IMS apn, HO failures between voWIFI and voLTE calls, … PGW software Upgrade study and implementation.

Transatel (Member of NTT Group, Transatel is Europe's leading MVNO enabler and a global pioneer in Internet of Things)
https://www.transatel.com/

Competence and responsibility include performing the following but are not limited to:

• As a packet core engineer in charge of planning and configuring new services in PGW (affirmed solution) OCS/ Gn-DNS/ Gi-DNS/ Radius/ IPBB components/ Amazon cloud space based on various business requirements.
• Investigation and troubleshooting of critical issues and important incidences based on telecom and IP network expertise.
• Configuring various services like dedicated APNs, hybrid routings for internet access + external routing toward costumer cloud space in AWS, external radius servers and handling costumer’s modification requests.
• In a close communication with other teams involved in solution (service management, marketing, project managers, technical experts in other fields, MNOs …).
• Design/ Support of many IOT businesses based on eSIM technology, such as laptops, tablets, trackers, as well as vehicles and aircraft.
• Ensuring services by end to end test and log analysis.
• Using new features and proposing new services to costumers for marketing development.
• Assist on minor/major upgrades of PGWs.

Mobile Telecommunication Company of Iran (Hamrah-e-Aval) [with more than 60M subscribers and a lot of business customers], Tehran (Iran)

https://www.mci.ir/web/en/aboutus

Competence and responsibility includes performing the following but are not limited to:

• Responsible for Optimization / configuration and network development of:
  o Nokia CS platform ( NSS and MGW) through Netact
  o Huawei both CS/PS ATCA and Virtual platforms MME (vUSN), S-PGW (vUGW) , PCRF (UPCC), DNS , HSS, CG, MSS, MGW over M2000/U2000 / securecrt , … .

Skills
▪ In depth knowledge of E2E call flows for voice data calls and IMS calls.
▪ In depth knowledge of 3GPP protocols: Core network CS, PS and IMS domains e.g. SS7, MAP, GTP, Diameter, SIP , AAA , DNS, etc.
▪ Good knowledge of radio network, as a necessary and helpful knowledge for better troubleshooting of core incidents.
▪ In depth knowledge of all core interfaces as S1-C,S1-U, S5, S8, S6a, S13, SGs, Sv, X2, S10, S11,S3/S4, Gn, GY, GX, C/D/F , etc.

Responsibilities
▪ Trouble-shooting of real time operational/Optimization challenges by trace analysis on different interfaces like Iu, Gb, Gn, Gy, Gx, C/D/F, E/G and user traces.
▪ Testing and Implementation of new features and applications.
▪ Improve the network planning contexts by precise identification of resource usages to reduce CAPEX and OPEX in long term.
▪ Integration & Acceptance test of all new services and products on POC phase and production phase.
▪ Optimization of PS nodes using tools like M2000/U2000, Astellia/ OM star and local tools.
▪ Updating all the records, design documents (HLDs/LLDs) and changes in network.
▪ Close coordination with business/Planning teams for understanding of design and translating into feasible/implementable solutions.
▪ Day to day coordination/follow up with vendor for Critical, Major , Minor issues.
▪ Troubleshooting of roaming issues.
▪ Responsible for all technical matters related to CS/ PS Core system.
- Well experienced in commissioning, integration, troubleshooting & planning optimization with CS Core Huawei Tools and equipment including MGW, MSS (CPCI&ATCA /cloud based ), STP, IMS,HLR, HSS9860, M2000, U2000.
- Well experienced in commissioning, integration, troubleshooting & planning optimization with CS Core
Nokia Tools and equipment including MGW, NSS , Netact.
- Excellent understanding and Experienced on Projects with tough delivery time.
-Experienced with protocol analyzer software’s and several optimization tools (e.g.Astellia, M2000,U2000,Netact and FARAZ(local tools))
-In depth knowledge and well experienced of Number portability and roaming
-Preparing country wise Core audit including alarm Analysis, KPI Audit and highlighting dimensioning and service affecting problems.

This project implemented based on Huawei and Ericsson NB-IOT modules.
My roles as an IOT SOLUTION ARCHITECT:

• Assist on developing overall IoT and Mobile ecosystem engagement strategy.
• Study on IoT standards and protocols
• Responsible for solution design (core part): Collaborate with internal planning team and external customers by providing customer use case analysis, engineering and design of technical solutions, technical presentations, and technical consultation
• Revising BOQ of vendors.
• Monitoring project progress, identified risks and took corrective action as needed.
• Maintaining open communication by presenting regular updates on project.