Development and maintenance of Mobile Gateways.

• Improved the generation and management of unique TEIDs on the mobile gateway by incorporating LRU and aging mechanisms.

• Implementation and maintenance of Call-flows for Serving and PDN Gateways.

• Implementation and extension of protocols to support Inter RAT Handovers between 3GPP defined and Non-3GPP RATs (WLAN).

• Implementation of signaling side protocols for untrusted and trusted Non-3GPP gateways (ePDG and TWAG).

• Providing support for MIB table backend, to serve the CLI and SNMP requests corresponding to signaling modules.

• Implementation and extension of load balancing for Traffic detection function and steering gateway.

• Implementation of data plane bonding between different RATs to provide simultaneous access.

• Implementation and maintenance for Control and User plane separation architecture for Mobile Gateways.

• Implementation of signaling protocols for 5G network packet core SMF and UPF gateways.

• Collaboration across sites and training to onboard new members.

Development and maintenance of L4 Telecom protocols and AT command interface.

• GSM/GPRS and TDSCDMA L4 protocols. Developed “Single USIM dual stack” 2G(GSM) and 3G(TDSCDMA) protocol stacks on single Mobile Equipment (ME).

• Experience in Mobile Application layer (AT command interface). Developed AT commands for interaction with IP stack for data transfer using GPRS bearer. Required collaboration and communication with teams across different sites.

• Experience in SIM/USIM protocols. Implemented Dual SIM Convergence Vortex that routes APDU request to the appropriate SIM as part of ST Ericsson’s implementation of “Dual SIM Dual Standby”. Worked on Anite simulator.

• Experience with kernel programming for ST Ericsson’s proprietary RTK (real time kernel) that runs on GSM/GPRS SoC solutions.