An uplink measurement signal indication method performed by a terminal device, the terminal device storing a correspondence, the correspondence comprising: ∘ a first one-to-one correspondence between a first value of an index and an identifier of a transmit beam used for sending a random access channel, RACH, signal, the first value being indicated by one or more bits, and ∘ a second one-to-one correspondence between a second value of the index and an identifier of a transmit beam used for sending a beam reference signal, BRS, the second value being indicated by the one or more bits, the method comprising: • receiving a signaling sent by a network device, wherein the signaling carries indication information that indicates a transmit beam for sending an uplink measurement signal by the terminal device, the indication information including the one or more bits indicating a value, the value being either the first value or the second value; • determining, based on the correspondence and based on the value carried in the signaling, a transmit beam corresponding to the value carried by the signaling, the transmit beam being either the transmit beam used for sending the RACH signal or the transmit beam used for sending the BRS; • sending the uplink measurement signal to the network device by using the determined transmit beam. ∘ a first one-to-one correspondence between a first value of an index and an identifier of a transmit beam used for sending a random access channel, RACH, signal, the first value being indicated by one or more bits, and ∘ a second one-to-one correspondence between a second value of the index and an identifier of a transmit beam used for sending a beam reference signal, BRS, the second value being indicated by the one or more bits, the method comprising: • receiving a signaling sent by a network device, wherein the signaling carries indication information that indicates a transmit beam for sending an uplink measurement signal by the terminal device, the indication information including the one or more bits indicating a value, the value being either the first value or the second value; • determining, based on the correspondence and based on the value carried in the signaling, a transmit beam corresponding to the value carried by the signaling, the transmit beam being either the transmit beam used for sending the RACH signal or the transmit beam used for sending the BRS; • sending the uplink measurement signal to the network device by using the determined transmit beam. • receiving a signaling sent by a network device, wherein the signaling carries indication information that indicates a transmit beam for sending an uplink measurement signal by the terminal device, the indication information including the one or more bits indicating a value, the value being either the first value or the second value; • determining, based on the correspondence and based on the value carried in the signaling, a transmit beam corresponding to the value carried by the signaling, the transmit beam being either the transmit beam used for sending the RACH signal or the transmit beam used for sending the BRS; • sending the uplink measurement signal to the network device by using the determined transmit beam.