a processor, used to configure an uplink transmission time-frequency resource for a terminal, where the uplink transmission time-frequency resource includes at least one OFDM symbol; and
a transceiver, configured to send an uplink transmission indication to the terminal, where the uplink transmission indication is used to indicate a time-frequency resource that is in the uplink transmission time-frequency resource and that can be used by a terminal to perform uplink transmission, where
the transceiver is further configured to receive an uplink signal sent by the terminal on the time-frequency resource that can be used by the terminal to perform uplink transmission.
During implementation of this embodiment, because the network side device preconfigures the uplink transmission time-frequency resource and the uplink transmission indication for the terminal, when the terminal needs to send the uplink signal, the terminal may perform, based on the quantity of OFDM symbols in the uplink transmission time-frequency resource possessed by the terminal, uplink transmission on the uplink transmission time-frequency resource carried in the uplink transmission indication, so that transmission is more orderly; and the network side device can also perform detection on a corresponding time-frequency resource, thereby improving transmission efficiency of the uplink signal.
In an implementation, the uplink transmission indication sent by the transceiver to the terminal is an ID of an OFDM symbol and an ID of a sub-band that are in the uplink transmission time-frequency resource and that can be used by the terminal to perform uplink transmission.