Distributed based station system and method for networking thereof and base band unit

A method for networking a distributed base station system, comprising:

• separating the base station system into a BBU and an RFU in dispersed arrangement, wherein the BBU comprises an integration of a base band signal processing unit, a transmission unit, a Main Processing & Timing unit and a interface unit;
• the interface unit of the BBU comprises a primary base band RF interface, and the RFU comprises at least one secondary base band RF interface;
• and
• connecting the BBU and the RFU through the primary base band RF interface of the BBU and the secondary base band RF interface of the RFU.

A base band unit (BBU), comprising:

• a Main Processing & Timing unit, for controlling a base station, exchanging signals and traffic data among the units in the base station and providing clock signals;
• a base band signal processing unit, for processing symbol-level and chip-level digital signals in physical layer;
• a transmission unit, which is connected with a base station controller for intercommunicating data information between the base station and the base station controller;
• and
• an interface unit for intercommunicating with external data information, intercommunicating digital base band signals with the base band signal processing unit, and intercommunicating master control information with the Main Processing & Timing unit;
• wherein the interface unit comprising one or a plurality of primary base band RF interface(s) for connecting with the RFU and transmitting uplink/downlink base band data and master controller state information with the RFU;
• a power supply interface for connecting with an external power supply;
• and a debugging interface for managing and maintaining the base station;
• and
• the Main Processing & Timing unit, the base band signal processing unit, the transmission unit and the interface unit are integrated.