Passive Intermodulation Suppression Method and Passive Intermodulation Suppression System

A passive intermodulation suppression system, comprising a base station and an antenna, wherein at least one uplink controllable gain module is disposed between the base station and the antenna, the antenna is connected to a target uplink controllable gain module, the target uplink controllable gain module is any one of the at least one uplink controllable gain module, and the target uplink controllable gain module is further connected to the base station;

• and
• the base station is configured to:
• obtaining, by using a target uplink controllable gain module, a first power Pt of an uplink signal sent by an antenna, wherein at least one uplink controllable gain module is disposed between a base station and the antenna, and the target uplink controllable gain module is any one of the at least one uplink controllable gain module;
• obtaining a second power Pb of a signal that is output from an output port of the base station;
• configuring a target attenuation of the base station, wherein the target attenuation IL=G0−(Pb−Pt), wherein G0 is an initial gain value of the target uplink controllable gain module;
• and
• adjusting the initial gain value based on the target attenuation to keep a gain of the base station constant.

A passive intermodulation suppression system, comprising a base station and an antenna, wherein at least one uplink controllable gain module is disposed between the base station and the antenna, the antenna is connected to a target uplink controllable gain module, the target uplink controllable gain module is any one of the at least one uplink controllable gain module, the target uplink controllable gain module is further connected to the base station, and a passive intermodulation suppression control module is disposed between the base station and the target uplink controllable gain module;

• and
• the passive intermodulation suppression control module is configured to:
• obtaining, by using a target uplink controllable gain module, a first power Pt of an uplink signal sent by an antenna, wherein at least one uplink controllable gain module is disposed between a base station and the antenna, and the target uplink controllable gain module is any one of the at least one uplink controllable gain module;
• obtaining a second power Pb of a signal that is output from an output port of the base station;
• configuring a target attenuation of the base station, wherein the target attenuation IL=G0−(Pb−Pt), wherein G0 is an initial gain value of the target uplink controllable gain module;
• and
• adjusting the initial gain value based on the target attenuation to keep a gain of the base station constant.