Provided are an uplink transmission method, a terminal, and a network device. The uplink transmission method comprises: determining a first time-frequency resource and a second time-frequency resourceallocated by a network device, wherein the first time-frequency resource is used for transmitting an uplink scheduling request, and the second time-frequency resource is used for transmitting an uplink reference signal; and when uplink data needs to be sent to the network device, the first time-frequency resource is used to send an uplink scheduling request to the network device, and the second time-frequency resource is used to send an uplink reference signal to the network device, so that the network device uses the uplink reference signal to determine the quality of an uplink channel, thereby effectively reducing the uplink delay in the uplink resource scheduling process.