Referring to FIG. 3F, 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 sixth data cached in a PDCP layer of the UE, a PUCCH resource used to transmit an SR for the sixth data is a long-duration PUCCH resource or a short-duration PUCCH resource, a second parameter of the PUCCH resource is a PUCCH resource type, a bit number of bits of the SR and bearer information, information of the second parameter specifically includes long-duration PUCCH (2 bits, 00), long-duration PUCCH (2 bits, 01), long-duration PUCCH (2 bits, 10), long-duration PUCCH (2 bits, 11), short-duration PUCCH (1 bits, 00), short-duration PUCCH (2 bits, 01), short-duration PUCCH (2 bits, 10) and short-duration PUCCH (2 bits, 11), a first parameter of the sixth data is a TTI duration, information of the first parameter specifically includes 0.125 ms low level, 0.125 ms high level, 0.25 ms low level, 0.25 ms high level, 0.5 ms low level, 0.5 ms high level, 1 ms low level and 1 ms high level, 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 6.
TABLE 6
Bit number of bits of SR
PUCCH resource type
and bearer information
TTI duration
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