In a possible implementation, the service feature includes at least one of a probability that the terminal device is paged, or an uplink/downlink service trigger type. The probability that the terminal device is paged is determined based on a quantity of communication times of the terminal device per unit time. If the quantity of communication times is less than a preset threshold, it may be determined that the terminal device is of the uplink service trigger type. On the contrary, if the quantity of communication times is greater than or equal to the preset threshold, it may be determined that the terminal device is of the downlink service trigger type. The preset threshold may be set based on an actual requirement. Herein, a value of the preset threshold is not specifically limited in the embodiments of this application. As an understanding, the probability that the terminal device is paged may also reflect the quantity of communication times of the terminal device per unit time.