Multi-type mixed network transmission system and transmission method based on CPRI architecture

The invention relates to a multi-type mixed network transmission system and transmission method based on a CPRI architecture. The multi-type mixed network transmission system based on the CPRI architecture comprises a first type near-end machine and a second type near-end machine connected to the first type near-end machine; and the first type near-end machine and the second type near-end machine are respectively connected to corresponding far-end machines. The multi-type mixed network transmission system and transmission method of the invention provide independent backup topology architecture on the basis of double near-end machines to make two systems independent from each other. On the basis of interaction communication connection between near-end machines and communication connection between the near-end machines and the far-end machine, the multi-type mixed network transmission system and transmission method can map independent IQ data of different systems into IQblock of a CPRI protocol to perform unifi