Indoor coverage device and multi-standard coverage system

The utility model provides an indoor coverage device and a multi-standard coverage system, wherein the device comprises a baseband expansion apparatus and a plurality of multi-standard distributed apparatuses disposed in a coverage region. The baseband expansion apparatus is connected with a baseband data processing module of a small-size base station and the plurality of multi-standard distributed apparatuses. Each multi-standard distributed apparatus comprises a first baseband signal processing apparatus, a first signal transceiver, and a first clock synchronous module, wherein the first clock synchronous module is connected with the first baseband signal processing apparatus and the first signal transceiver, and the first baseband signal processing apparatus is connected with the baseband expansion apparatus and the first signal transceiver. According to the utility model, the baseband expansion apparatus is connected to the plurality of multi-standard distributed apparatuses disposed in the coverage region. Signals are converted through the first signal transceivers of the multi-standard distributed apparatuses into radio frequency signals for network coverage, thereby enlarging the network coverage, and achieving better signal coverage for middle and large scenes.