A first node device includes a transmitter, a receiver, a processor, and a non-transitory computer-readable storage medium storing a program to be executed by the processor. The program includes instructions to cause the transmitter to send, to a second node device, an offset of a first uplink sending timing of the second node device and a first amount of timing adjustment of the second node device, cause the transmitter to send indication information to the second node device, where the indication information indicates whether the second node device sends uplink data by using the first uplink sending timing of the second node device, and receive, through the receiver, data sent by the second node device, where the first node device is a parent node device of the second node device.