A method includes: configuring, by a network device, M BPs for at least one terminal device, where the M BPs are located on one frequency domain resource; determining, by the network device, first indication information related to X BPs in the M BPs, where the first indication information includes at least one field, each field is used to indicate transmission types in at least one time unit on the X BPs; sending, by the network device, the first indication information to the at least one terminal device, where the at least one terminal device includes a first terminal device; and sending, by the network device, second indication information to the first terminal device, where the second indication information is used to indicate an index relationship between that at least one of N BPs configured for the first terminal device and the at least one field in the first indication information.