Signal amplifying device, method for controling signal amplifying device and method for identifying signal amplifying device

A signal amplifying device, comprising:

• a baseband module, which supports a signal of a wireless cellular network, at least one return side radio frequency module, at least one return side antenna, at least one access side radio frequency module, at least one access side antenna and a user identification module interface;
• wherein the at least one return side antenna is adapted to receive a downlink signal of the wireless cellular network and transmit the downlink signal to the at least one return side radio frequency module, which is coupled with the at least one return side antenna;
• wherein the at least one return side radio frequency module is adapted to send the received downlink signal to a corresponding access side radio frequency module and the baseband module;
• wherein the baseband module is adapted to process the received downlink signal and acquire a synchronization information of the downlink signal and further adapted to control synchronization of the at least one return side radio frequency module and the at least one access side radio frequency module, which are coupled with the baseband module, with the downlink signal;
• wherein the at least one access side radio frequency module is adapted to send the received downlink signal to the at least one access side antenna, and the at least one access side antenna is adapted to send out the received downlink signal;
• the at least one access side antenna is further adapted to receive an uplink signal and send the received uplink signal to the at least one access side radio frequency module, which is coupled with the at least one access side antenna;
• the at least one access side radio frequency module is further adapted to send the uplink signal to a corresponding return side radio frequency module and the baseband module;
• wherein the baseband module is further adapted to monitor the uplink signal and control synchronization of the at least one return side radio frequency module and the at least one access side radio frequency module, which are coupled with the baseband module, and control turning on and off of the at least one return side radio frequency module and the at least one access side radio frequency module;
• wherein the at least one return side radio frequency module is further adapted to send the received uplink signal to the at least one return side antenna, which is coupled with the at least one return side radio frequency module, and the at least one return side antenna is further adapted to send out the received uplink signal;
• and
• wherein the user identification module interface is coupled with a user identification module, which is configured for the signal amplifying device, and the baseband module is further adapted to read a user information stored in the user identification module through the user identification module interface, so that the wireless cellular network can control the signal amplifying device.