In one embodiment, before S250, the access network device #A may further perform a determining operation S230.
Specifically, in the embodiments of this application, in S230, the access network device #A may determine a relationship between duration (namely, an example of second duration, denoted as duration #W below for ease of understanding and description) of an interval between the current moment and the moment #A and a preset duration threshold #A (namely, an example of a first threshold), and determine, based on a determining result, whether to perform operation S250.
The duration threshold #A may be determined based on a transmission latency #A. The transmission latency #A may be a transmission latency between the access network device #A and the terminal device #A. Specifically, the transmission latency #A may be duration from sending a piece of information or a message by the access network device #A to receiving the information or the message by the terminal device #A.
For example, by way of example but not limitation, “the duration threshold #A may be determined based on a transmission latency #A” may mean that, the duration threshold #A may be determined only based on the transmission latency #A. For example, when it is ensured that the duration threshold #A is greater than or equal to the transmission latency #A, the duration threshold #A can be determined randomly.
For another example, by way of example but not limitation, “the duration threshold #A may be determined based on a transmission latency #A” may mean that, the duration threshold #A may be determined based on the transmission latency #A and another parameter, and by way of example but not limitation, the “another parameter” may include but is not limited to processing capability of the terminal device #A.