Data transmission method, control information sending method, and device

A control information sending method, comprising:

• determining, by a communications device, first control information that indicates a first resource used for receiving or sending data;
• sending, by the communications device, the first control information;
• determining, by the communications device, second control information, wherein the second control information comprises first indication information that indicates that a second resource is punctured or postponed, and wherein the second resource is a part of the first resource;
• and
• sending, by the communications device, the second control information.

A communications device, comprising:

• a processor, configured to determine a first resource used for receiving or sending data;
• a receiver, configured to receive control information, wherein the control information comprises first indication information that indicates that a second resource is punctured or postponed, and wherein the second resource is a part of the first resource, wherein
• the processor is further configured to determine a third resource based on the first indication information and the first resource;
• and
• the receiver is further configured to receive the data by using the third resource;
• or
• a transmitter, configured to send the data by using the third resource.

A communications device, comprising:

• a processor, configured to determine first control information, wherein the first control information indicates a first resource used for receiving or sending data;
• and
• a transmitter, configured to send the first control information, wherein
• the processor is further configured to determine second control information, wherein the second control information comprises first indication information that indicates that a second resource is punctured or postponed, and wherein the second resource is a part of the first resource;
• and
• the transmitter is further configured to send the second control information.