Precoding method and apparatus for heterogeneous network coordinated multi-point transmission

A precoding apparatus for heterogeneous network coordinated multi-point transmission, applied to a heterogeneous network coordinated multi-point transmission system comprising a macro base station, a micro base station and one or more user terminals, comprising a processor and a non-transitory computer-readable storage medium including computer-executable instructions executed by the processor to perform operations comprising:

• obtaining parameter information of the heterogeneous network coordinated multi-point transmission system;
• a first channel space transmitting power with the maximum transmitting power of the macro base station;
• comparing a second channel space transmitting power with the maximum transmitting power of the micro base station according to the parameter information obtained by the obtaining unit to obtain a comparison result;
• determining an obtaining manner of a precoding vector according to the comparison result;
• obtaining a first precoding vector according to the obtaining manner of the precoding vector;
• and
• configuring the macro base station and the micro base station according to the obtained first precoding vector.