WIRELESS COMMUNICATION SYSTEM AND MOBILE WIRELESS COMMUNICATION DEVICE IN BROADCAST WIRELESS TRANSMISSION

摘要

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.