Data transmission method and apparatus

A data transmission method, comprising:

• sending, by a second device, request information to a first device, wherein the request information is used to request to transmit data in a second frequency band;
• receiving, by the second device, scheduling information, in a first frequency band, from the first device, wherein
• the scheduling information is used to schedule the second device to transmit data in the second frequency band,
• the scheduling information carries first indication information,
• the first indication information is used to indicate a resource used by the first device and the second device to transmit data.

A data transmission apparatus, applied to a first device, comprising:

• a processor;
• and
• a memory configured to store computer readable instructions that, when executed by the processor, cause the data transmission apparatus to:
• receive request information from a second device, wherein the request information is used to request to perform data transmission in a second frequency band;
• send scheduling information, in a first frequency band, to the second device based on the request information, wherein the scheduling information is used to schedule the second device to transmit data in the second frequency band,
• the scheduling information carries first indication information, the first indication information is used to indicate a resource used by the first device and the second device to transmit data.

A data transmission apparatus, applied to a first device, comprising:

• a processor;
• and
• a memory configured to store computer readable instructions that, when executed by the processor, cause the data transmission apparatus to:
• send request information to a first device, wherein the request information is used to request to transmit data in a second frequency band;
• receive scheduling information, in a first frequency band, from the first device, wherein
• the scheduling information is used to schedule the second device to transmit data in the second frequency band,
• the scheduling information carries first indication information,
• the first indication information is used to indicate a resource used by the first device and the second device to transmit data.