Communications Research Laboratory, Independent Administrative Institution

Mitsubishi Denki Kabushiki Kaisha

Hitachi-kokusai Electric Inc.

National Institute of Information and Communications Technology, Incorporated

National Institute of Information and Communications Technology, Incorporated Administrative Agency

Gang Wu

Masugi Inoue

Khaled Mahmud

Takashi Sakakura

Homare Murakami

Yoneo Watanabe

Koji Yamaoka

Mitsuhiko Mizuno

Yoshihiro Hase

Paul J M Havinga

The present invention is intended to provide, for a wireless communication system originally having a calling function, a wireless communication system enabling an audio communication service or the like which requires a calling function, and to provide a wireless communication system which reduces power consumption of a wireless terminal when it is in a standby mode. A communication party, which is a calling side, a network to which the communication party is connected, and a wireless LAN base station, a pager base station, and a pager controller which are connected to the network, and a PC, which is a wireless communication terminal, constitute the present invention. The PC includes a wireless LAN card and a pager card. This forms the present invention.

Radio communication method, radio communication system, wide area radio communication base station, and radio communication terminal

Upon recovery of communication, this recovery is detected by communication recover detector and then optimal times duplicated pseudo acknowledgements calculated by arithmetic unit are transmitted from ACK transmitter. During normal state, advertisement is made in small value of advertised receive window size and immediately after recovery state, advertisement is made in expanded window size.

Packet communication method and proposal node

To create a network that connects a plurality of wireless communication systems to create optimal systems for various environments, and that seamlessly integrates the resulting systems together in order to provide more efficient and advanced service in general. A network system that can seamlessly integrate wireless communication systems employs a heterogeneous network architecture with at least four building blocks, including a mobile host, a wireless access network, a common core network, and an external network

Seamless integrated network system for wireless communication systems

In a multiservice wireless communication system according to the present invention, a location managerof a multiservice terminaldetects its own position with a GPS receiver interface. The location manager sends the detected positional information to a management servervia a common-signaling wireless network base stationin which respective multiple service zones serviced by multiple wireless systems overlap in a common-signaling wireless zone and acquires information on available wireless systems as a response to that. A network selecting sectionselects a wireless system that most matches selecting conditions from the acquired available wireless systems and performs communication via the interfacesandthat operate the selected wireless system.

Multi-service radio communication system

Growing community of inventors

Koganei, Japan

Gang Wu