With reference to Table 1, it can be learned that, in the configuration of the plurality of wake up signals, the category information classified based on service feature information includes two categories, namely, the uplink service trigger and the downlink service trigger. The uplink service trigger corresponds to the wake up signal 1, the wake up signal 2, the wake up signal 3, and the wake up signal 4, and the downlink service trigger corresponds to the wake up signal 5, the wake up signal 6, the wake up signal 7, and the wake up signal 8. In this way, if the first category to which the terminal device belongs is the category of the uplink service trigger, it indicates that the terminal device needs to monitor the wake up signal 1, the wake up signal 2, the wake up signal 3, and the wake up signal 4. The wake up signal 1, the wake up signal 2, the wake up signal 3, and the wake up signal 4 are to-be-monitored wake up signals that the terminal device needs to monitor, and the terminal device does not need to monitor the wake up signal 5, the wake up signal 6, the wake up signal 7, and the wake up signal 8. If the first category to which the terminal device belongs is the category of the downlink service trigger, it indicates that the terminal device needs to monitor the wake up signal 5, the wake up signal 6, the wake up signal 7, and the wake up signal 8. The wake up signal 5, the wake up signal 6, the wake up signal 7, and the wake up signal 8 are to-be-monitored wake up signals that the terminal device needs to monitor, and the terminal device does not need to monitor the wake up signal 1, the wake up signal 2, the wake up signal 3, and the wake up signal 4. In this way, the to-be-monitored wake up signal that the terminal device needs to monitor is determined based on the category to which the terminal device belongs.