公开(公告)号：EP2554427A4

公开(公告)日：2017-02-08

申请号：EP11765722

申请日：2011-03-31

Applicant: TOSHIBA KK

Inventor： YAMAMOTO JUNKO ,  KANAYAMA MICHIO ,  YOSHIDA KENJI ,  TERAKADO YASUHIRO

IPC: B60L15/40 ,  B61L27/00

CPC classification number: B61L27/0027 ,  B60L2200/26 ,  B60L2240/12 ,  B60L2250/16 ,  B60L2260/32 ,  B61L3/006 ,  B61L3/008 ,  B61L27/0038

公开(公告)号：EP2621212A4

公开(公告)日：2016-12-28

申请号：EP11826606

申请日：2011-04-19

Applicant: TOSHIBA KK

Inventor： SAKATA REN ,  NABETANI TOSHIHISA ,  DEGUCHI NORITAKA ,  KANAYAMA MICHIO ,  WATANABE SHINSUKE ,  SUZUKI MITSUAKI ,  AKASHI MASAKUNI ,  SATO SHUJI

IPC: H04W24/08 ,  H04W52/38

CPC classification number: H04W52/04 ,  H04W24/08 ,  H04W52/283 ,  H04W52/36

Abstract: According to one embodiment, a wireless terminal communicates with a server via a plurality of wireless base stations. The wireless terminal comprises a means for transmitting a signal in a normal-power transmission mode, a means for transmitting the signal in a low-power transmission mode, a transmission power control means for switching the normal-power transmission mode to the low-power transmission mode, or vice versa, and a means for transmitting current position data to the server. The server determines the position of the wireless terminal from the position data, designates one of the base stations, which is close to the wireless terminal, in accordance with the position data when the wireless terminal is set to the low-power transmission mod, and determines that the base station designated has a problem if the server does not receive the signal transmitted in the low-power transmission mode.