Patent ID: 8923798

Claim:
A rescue request signal processing device connected with an RF coupler and a repeater, the device comprising: a signal detector configured to detect a rescue request signal from an uplink signal outputted from a wireless communication terminal and identification information of the wireless communication terminal from the rescue request signal; a signal strength information generator configured to: compare the detected identification information of the wireless communication terminal with identification information included in a request signal for location information transmitted from a location information server, and generate strength information of the uplink signal of the wireless communication terminal when the detected identification information of the wireless communication terminal is identical with the identification information included in the request signal; and a transmitter configured to transmit the strength information of the uplink signal and at least one of location information and identification information of the repeater to the location information server, wherein the identification information included in the request signal is obtained by the location information server from a location information requesting device connected to a base station that serves the wireless communication terminal, wherein the signal detector receives a signal which has not yet been amplified by the repeater from the RF coupler so as to detect the rescue request signal from the signal serving as the uplink signal, and wherein the uplink signal is transmitted via a preset channel from the wireless communication terminal to the RF coupler and comprises the rescue request signal set within a preset frame of a whole frame of the uplink signal, and the rescue request signal is sent from the wireless communication terminal when a pre-determined rescue request condition is satisfied.