Ntt Docomo, Inc.

Shin Nakamatsu

Shinji Uebayashi

Kouki Hayashi

Ryo Yamaguchi

Masanori Ishida

Shigeru Sekiguchi

Ryuutarou Hosoi

A method to be executed by a user terminal for searching for locations of one or more wireless devices that are located within an area in which the one or more wireless devices can wirelessly communicate with the user terminal, wherein each of the one or more wireless devices periodically transmits a beacon signal. The method includes detecting a number of the one or more wireless devices that are located within the area based on the beacon signals; determining a transmission period for transmitting the beacon signals depending on the number of the one or more wireless devices; and instructing the one or more wireless devices that are located within the area to transmit the beacon signals in accordance with the determined transmission period.

RFID tag search method, non-transitory storage medium storing RFID tag search program, and RFID tag search device

A weighting parameter estimation system for estimating a weight parameter for the antenna elements of a mobile terminal is provided. The system includes a prohibited space forming part to which electromagnetic waves should not be directed when the mobile terminal transmits a signal in wireless communications, and a weighting parameter determination unit configured to determine the weighting parameter for each of the antenna elements of the mobile terminal such that the power level of a test wave transmitted from or received in the prohibited space becomes the minimum.

System and method for estimating weighting parameters for antenna elements

Growing community of inventors

Chiyoda-ku, Japan

Shin Nakamatsu