In a possible example, before the operation that the terminal acquires the reference information of the first parameter required to be indicated to the network-side device, the method further includes the following operation.

The terminal acquires the cached data.

In a possible example, the operation that the terminal acquires the reference information of the first parameter required to be indicated to the network-side device includes the following operation.

Responsive to detecting that no UL-SCH resource is obtained to transmit the cached data, the terminal acquires the reference information of the first parameter required to be indicated to the network-side device.

It can be seen that, in the example, the terminal specifically acquires the reference information of the first parameter required to be indicated to the network-side device responsive to detecting that no UL-SCH resource is obtained to transmit the cached data in a present TTI. In such a manner, the terminal may dynamically configure reference information of an alternative resource used to transmit the cached data, i.e., the reference information of the first parameter, in real time according to a transmission resource scheduling condition of the cached data and then transmit the SR to synchronously indicate the reference information of the first parameter to the network-side device to enable the network-side device to timely acquire the reference information of the alternative resource, so that the configuration information of the licensed resource transmitting the cached data may be accurately determined, and improvement in resource scheduling flexibility and real-time performance of the wireless communication system is facilitated.