Philippe Duplessis

Title: Innovations by Philippe Duplessis

Introduction

Philippe Duplessis is a notable inventor based in Velizy, France. He has made significant contributions to the field of cellular radio systems, holding 2 patents that enhance the efficiency of traffic allocation in mobile communication networks.

Latest Patents

Duplessis's latest patents include a method and means for allocating the volume of traffic over different control channels in a cellular radio system. This innovative approach allows mobile radio stations to assign themselves to control channels allocated to a base station, ensuring an even distribution of traffic. The base station transmits a channel group code that signifies the range of group code numbers for each control channel. Mobile stations store their identifying group code number, scan the group codes, and assign themselves to the appropriate control channel. This method allows for dynamic adjustments in traffic distribution by simply changing the channel group codes without needing specific commands to the mobile stations.

Another significant patent describes a process for spreading the volume of traffic over different control channels. In this system, a base station with multiple control channels subdivides mobile radio stations into variable groups. The base stations transmit the number of groups and a group code on each control channel. Mobile stations detect this information and combine it with their stored group number to determine the control channel assignment.

Career Highlights

Philippe Duplessis works at U.S. Philips Corporation, where he has been instrumental in developing advanced communication technologies. His work has significantly impacted the efficiency and reliability of cellular networks.

Collaborations

Duplessis has collaborated with notable coworkers, including Christoph Grauel and Alain Tarabout, contributing to various innovative projects within the company.

Conclusion

Philippe Duplessis's contributions to cellular radio systems through his patents demonstrate his commitment to advancing communication technology. His innovative methods for traffic allocation are vital for the future of mobile communications.