Wireless relay system, and wireless relay method

1 . A wireless relay system that relays radio communication between a radio control device and a radio terminal which is under control of the radio control device, the wireless relay system comprising:

a first software radio function unit that performs radio communication with the radio control device; and

a second software radio function unit that performs radio communication with the radio terminal; and

wherein the first software radio function unit captures, as In-phase and Quadrature “iq” data, a radio signal received from the radio control device, transfers the captured iq data to the second software radio function unit in real time, converts the iq data transferred from the second software radio function unit into a radio signal, and transmits the radio signal to the radio control device,

wherein the second software radio function unit captures, as iq data, a radio signal received from the radio terminal, transfers the captured iq data to the first software radio function unit in real time, converts the iq data transferred from the first software radio function unit into a radio signal, and transmits the radio signal to the radio terminal,

wherein the first software radio function unit includes a first transceiver that performs radio communication with the radio control device, a first autonomous control unit that controls radio communication between the first transceiver and the radio control device in a state where transfer of a signal between the first software radio function unit and the second software radio function unit is stopped, and a first monitor unit that activates the first autonomous control unit when a predetermined condition is satisfied,

wherein the second software radio function unit includes a second transceiver that performs radio communication with the radio terminal, a second autonomous control unit that controls radio communication between the second transceiver and the radio terminal in a state where transfer of a signal between the second software radio function unit and the first software radio function unit is stopped, and a second monitor unit that activates the second autonomous control unit when a predetermined condition is satisfied, and

wherein the first autonomous control unit causes the first transceiver to exchange a vital monitoring signal with the radio control device, and

wherein the second autonomous control unit causes the second transceiver to transmit a signal for causing the radio terminal to perform a predetermined operation.

2 . A wireless relay method performed by a wireless relay apparatus including a first software radio function unit that performs radio communication with a radio control device and a second software radio function unit that performs radio communication with a radio terminal which is under control of the radio control device, the wireless relay method comprising:

a first transfer step of capturing, as In-phase and Quadrature “iq” data, a radio signal received by the first software radio function unit from the radio control device and transferring the captured iq data to the second software radio function unit in real time;

a second transfer step of capturing, as iq data, a radio signal received by the second software radio function unit from the radio terminal and transferring the captured iq data to the first software radio function unit in real time;

a first transmission step of converting the iq data transferred in the second transfer step into a radio signal and transmitting the radio signal to the radio control device;

a second transmission step of converting the iq data transferred in the first transfer step into a radio signal and transmitting the radio signal to the radio terminal;

a first autonomous control step of controlling radio communication between the first software radio function unit and the radio control device in a state where the first transfer step and the second transfer step are stopped when a predetermined condition is satisfied; and

a second autonomous control step of controlling radio communication between the second software radio function unit and the radio terminal in a state where the first transfer step and the second transfer step are stopped when a predetermined condition is satisfied,

wherein, in the first autonomous control step, the first software radio function unit is caused to exchange a vital monitoring signal with the radio control device, and

wherein, the second autonomous control step, the second software radio function unit is caused to transmit a signal for causing the radio terminal to perform a predetermined operation.