Patented Solutions Deliver Exceptional Performance in Multi-Radio Wireless Devices

The complexity of modern wireless devices demands smarter signal and interference management solutions. Sudhirkumar Prajapati has developed key advancements in wireless chip design that address this challenge, focusing on how multiple wireless technologies coexist within smartphones, tablets, and IoT devices.

As director of WiFi Systems Design at Infineon Technologies, Sudhirkumar Prajapati translates technical innovation into practical solutions that solve real-life challenges. His work spans signal management, power optimization, and interference mitigation across wireless technologies, addressing critical challenges in modern device development.

Evolving Wireless Coexistence

Starting with fundamental wireless signal management, Mr. Prajapati developed a method that helps WiFi, Bluetooth, and LTE chipsets communicate effectively. This solution, protected under patent US9131519B2, structured different wireless technology operations, reducing interference in crowded signal environments. The implementation solves long-standing challenges in wireless communications: multiple radio signals often conflict, causing dropped connections, audio/video glitches, poor performance, and higher power consumption.

Building on this foundation, his work expanded to address dynamic signal management. Patent US9100108B2 introduced time-based coordination between wireless signals, while US9420600B2 created an adaptive system that adjusts WiFi transmission patterns based on Bluetooth and cellular activity. He further advances his work in Patent US9826524B2, which combines space, frequency, and time-domain approaches to improve further the wireless performance of multiple connectivity chips.

These advances help devices maintain optimal performance during simultaneous operations like video streaming, Bluetooth audio, and data transfer. The system monitors real-time WiFi, Bluetooth, and LTE signals and automatically adjusts their transmission patterns to minimize interference between different radio signals to minimize mutual interference.

The practical implementation of these patents addresses specific technical challenges in consumer electronics. For example, in voice calls over cellular using Bluetooth headphones, the system dynamically adjusts signal patterns to prevent audio dropouts and maintains audio quality. Similarly, this implementation allows WiFi hotspots through cellular for internet connection. This signalling coordination happens automatically, requiring no user intervention while improving the overall user experience.

Technical Implementation and Power Management

Mr. Prajapati's work surpasses beyond signal management to power efficiency. His Opportunistic Power Save technique reduces WiFi chip power consumption by 68% during legacy rate operations, while Early Beacon Trim decreases power usage by 33% in power-save mode. To achieve these power benefits, Mr. Prajapati characterized power profiles across different WiFi rates and implemented dynamic power-down states based on received frames and their timings.

Implementing his novel patented techniques requires careful consideration of hardware design, coexistence signalling, and interference mitigation. His solutions optimize antenna placement for better signal isolation and implement advanced frequency hopping techniques and time domain multiplexing to avoid interference.

Through his leadership at Infineon Technologies, these solutions now operate in millions of consumer electronics devices. Mr. Prajapati's work enables smartphones, tablets, and IoT devices to handle complex wireless operations while maintaining battery efficiency. The practical impact includes improved audio/video streaming quality, voice quality, more reliable Bluetooth connections, and extended battery life while simultaneously using different wireless technologies in mobile devices.

Leading the Way to Next Generation Solutions

Recent developments focus on emerging wireless standards. Mr. Prajapati leads the IEEE802.11be MLSR MLO architecture design for IoT WiFi chips, preparing for future simultaneous transmit-receive capabilities. This work involves defining new interfaces and hardware configurations that will support next-generation wireless communications, which is particularly important for IoT devices that require constant, reliable, and high-performance connectivity.

His latest patent applications address power management in IoT devices and multi-link operations for WiFi7. These innovations focus on reducing power consumption in sensor networks and improving wireless performance in dense IoT environments. The solutions enable devices to switch between different frequency bands dynamically, optimizing performance and power usage. This capability becomes increasingly important as more devices compete for limited wireless spectrum.

WiFi chip design continues growing and is projected to reach $36.8 billion at 4% CAGR by 2034. As devices require more sophisticated wireless capabilities, Mr. Prajapati's advancements help manage increasing signal complexity while improving power efficiency. His current work on Bluetooth Low Energy and WiFi coexistence techniques demonstrates an ongoing commitment to advancing wireless coexistence technology. These developments open up the possibility of more efficient and reliable wireless communications in future consumer electronics.