Hakan O Djuphammar

Title: Hakan O Djuphammar: Innovator in Wireless Communication Technologies

Introduction

Hakan O Djuphammar is a notable inventor based in Stockholm, Sweden. He has made significant contributions to the field of wireless communication, holding a total of 4 patents. His work focuses on enhancing communication systems, particularly in dual-mode operations.

Latest Patents

Hakan's latest patents include innovative methods and apparatus for dual mode operation in a wireless communication system. One of his inventions describes a wireless network terminal that tunes to a high data rate (HDR) carrier when in an idle state. The terminal periodically scans a 1×RTT carrier for pages, SMS, and other information. If an incoming communication is detected on the 1×RTT carrier, any existing HDR packet session is terminated to allow the terminal to tune to the 1×RTT carrier for the incoming communication. Additionally, if the coverage area does not support an HDR carrier, the terminal tunes to the 1×RTT carrier and periodically scans for an HDR carrier.

Another significant patent involves a combined CDMA multi-service carrier and TDMA/CDMA packet carrier. This invention provides systems and methods for coordinating calls within hybrid cells that support both an all-services carrier and a best-efforts carrier. The all-services carrier supports real-time and non-real-time services, while the best-efforts carrier supports only non-real-time services. In one embodiment, the all-services carrier is a 1×RTT carrier, and the best-efforts carrier is an HDR carrier. Calls can be placed on either carrier and transferred between them as circumstances dictate.

Career Highlights

Hakan has worked with prominent companies in the telecommunications industry, including Telefonaktiebolaget LM Ericsson and Ericsson Ge Mobile Communications Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in wireless communication.

Collaborations

Throughout his career, Hakan has collaborated with talented individuals such as Sven E Nilsson and Mats Erland Eriksson. These collaborations have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Hakan O Djuphammar is a distinguished inventor whose work in wireless communication technologies has led to multiple patents and significant advancements in the field. His innovative approaches continue to shape the future of communication systems.