Method, system and microminiature gateway for communication between microminiature honeycomb network and macro network

The embodiment of the invention relates to a method, a system and an ultra-small gateway for carrying out the communication between an ultra-small cellular network and a macro-network, wherein, the method for carrying out the communication between the ultra-small cellular network and the macro-network comprises that: a source IP address in a message/data from FAP is replaced by an IP address of FGW and then sent to the macro-network side; and/or a target IP address in the message/data from the macro-network side is replaced by the IP address of FAP and sent to the FAP. The embodiment of the invention converts the source IP address in the message/data sent by the FAP to the IP address of the FGW which is accessed by the FAP, and coverts the target IP address in the message/data sent by the macro-network side to the corresponding IP address of the FAP, thus realizing the communication between the FAP and the macro-network side without the need of adding a plurality of FAP to change the configuration of the macro-network side and saving the maintenance costs.