The terminal queries a preset mapping relationship between information of a first parameter and information of a second parameter of a PUCCH resource to acquire reference information, corresponding to the reference information of the first parameter, of the second parameter of the PUCCH resource, the second parameter being a parameter associated with the PUCCH resource used to transmit an SR.
The terminal transmits the SR used to schedule the cached data, on the PUCCH resource determined by the reference information of the second parameter.