Data transmission method and related device

A transmit apparatus, comprising:

• at least one processor configured to determine a first data packet to be sent to a first receive end;
• the at least one processor configured to generate a second data packet based on the first data packet and further including information to be sent to a second receive end, wherein a length of the second data packet is greater than a length of the first data packet;
• an encoder configured to encode the second data packet;
• and
• a transmitter configured to send an encoded second data packet;
• and, wherein generating, by the transmit apparatus, the second data packet based on the first data packet comprises:
• repeating the first data packet to generate the second data packet.

A data transmission system comprising:

• a processor, and
• a memory connected to the processor, the memory storing instructions that when executed by the processor control the processor to perform operations comprising:
• (a) testing a first data packet to be sent to a first terminal to determine if the first data packet has a requisite length;
• and
• (b) conditioned on results of the testing, selectively generating a second data packet having a length greater than a length of the first data packet, the second data packet including the first data packet to be sent to a first terminal and further including additional information to be sent to a second terminal different from the first terminal, and
• a transmitter connected to the processor, the transmitter transmitting the second data packet instead of the first data packet, the transmitted second data packet containing both (i) information for the first terminal and (ii) information for the second terminal.