In the foregoing technical solution, the first DCI and the second DCI are transmitted in the same CORESET, so that a quantity of CORESETs in which the terminal device performs monitoring can be reduced, thereby further reducing complexity of monitoring the power saving signal by the terminal device.

In a possible implementation, the first DCI and the second DCI are sent on a candidate control channel resource in a same search space set.

In the foregoing technical solution, further, the first DCI and the second DCI are transmitted in the same search space set, so that complexity of monitoring the power saving signal by the terminal device can be further reduced.

According to a third aspect, this application provides a terminal device, including modules configured to perform any one of the first aspect or the implementations of the first aspect.

According to a fourth aspect, this application provides a network device, including modules configured to perform any one of the second aspect or the implementations of the second aspect.

According to a fifth aspect, this application provides a chip. The chip is connected to a memory, and is configured to: read and execute a software program stored in the memory, to implement the method according to any one of the first aspect or the implementations of the first aspect.

According to a sixth aspect, this application provides a chip. The chip is connected to a memory, and is configured to: read and execute a software program stored in the memory, to implement the method according to any one of the second aspect or the implementations of the second aspect.