| 摘要 |
<p>The present invention pertains to a method for wireless transmission of local or useful information. The local information is sent to a mobile station from a preferably fixed transmitter/receiver pair located in proximity of said mobile station (5) for the purpose of localizing same (5). The useful information is sent between a fixed station (1) and the mobile station (5). From the fixed station (1) the transmission of useful information is interrupted at set times. The local information is sent from the transmitter/receiver pair (10) at such times when the transmission of useful information from the fixed station (1) is interrupted. The useful information sent from the fixed station (1) is also received at the transmitter/receiver pair (10) for the purpose of timing with the transmission of local information. Consequently, a transmitter/receiver pair (10) for transmitting local information is suggested, consisting of a receiver (15) for receiving radio-frequency signals preferably sent in an ultra high frequency band and a transmitter (20) for sending local information preferably in an ultra high frequency band. A timing device (24) is also provided for triggering the activation of the transmitter for sending local information at such times when the reception of radio-frequency signals is interrupted.</p> |
