Auxiliary communication method and system, and device having base station function and terminal

A device having a base station function, comprising:

• at least one processor;
• and
• a storage device storing a plurality of instructions, which when executed by the processor, causes the at least one processor to:
• determine whether it is needed to provide auxiliary communication for any terminal according to channel quality of communication channels with the any terminal and data transmission requirements of the any terminal;
• select a specified terminal that is connected to the device having the base station function as an auxiliary terminal for assisting communication of the any terminal, when it is determined that it is needed to provide the auxiliary communication for the any terminal;
• transmit notification information and auxiliary communication information to the any terminal and the auxiliary terminal;
• receive confirmation information transmitted by the specified terminal that the specified terminal agrees to assist communication of the any terminal;
• communicate with the any terminal through the auxiliary terminal;
• determine an amount of data to be transmitted to the any terminal in a data buffer corresponding to the any terminal and quality of service corresponding to the data;
• and
• determine the amount of data to be transmitted of the any terminal according to a buffer state report index transmitted by the any terminal in a media access control layer;
• wherein the auxiliary communication information comprises:
• a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, a time-frequency position of a discovery signal transmitted by the any terminal or the auxiliary terminal, scrambling sequence information used by the any terminal to communicate with the auxiliary terminal.