Referring to FIG. 3A, the network-side device is a gNB in 5G NR, the terminal is UE in 5G NR, the cached data acquired by the terminal is first data cached in an RLC layer of the UE, a PUCCH resource used to transmit an SR for the first data is a short-duration PUCCH resource, a second parameter of the PUCCH resource is a resource block identifier of the PUCCH resource, information of the second parameter specifically includes short-duration PUCCH A1 and short-duration PUCCH A2, a first parameter of the first data is a PHY-layer parameter numerology, information of the first parameter specifically includes 15 KHz and 30 KHz, and a mapping relationship, pre-configured by the UE through a high layer of a protocol stack, between information of a first parameter and information of a second parameter is shown in Table 2.
TABLE 2
PUCCH resource block identifier
PHY-layer parameter Numerology
Short-duration PUCCH A1
15 KHz
Short-duration PUCCH A2
30 KHz
