When one OFDM symbol in the uplink transmission time-frequency resource is occupied, and NRBGF≤6, the sent uplink signal is of the type 1 (Type 1), namely, the reference signal.
When one OFDM symbol in the uplink transmission time-frequency resource is occupied, and NRBGF>6, the sent uplink signals are of the type 2 (Type 2), namely, the reference signal and the control signal.
When two to six OFDM symbols in the uplink transmission time-frequency resource are occupied, the sent uplink signals are of the type 3 (Type 3), namely, the reference signal and the data signal.
When seven to fourteen OFDM symbols in the uplink transmission time-frequency resource are occupied, the sent uplink signals are of the type 4 (Type 4), namely, the reference signal, the control signal, and the data signal.
Correspondingly, the foregoing may be expressed by using Table 3.