A timing advance, TA, determining method performed by a network device, the method comprising: • determining, based on a correspondence between parameter sets and TA granularities and based on a certain parameter set among the parameter sets, a TA granularity, the certain parameter set being a parameter set corresponding to a frequency domain resource, the frequency domain resource being scheduled by the network device for a terminal, wherein in the correspondence, for each TA granularity among the TA granularities, the TA granularity corresponds to a parameter set among the parameter sets, wherein each parameter set among the parameter sets in the correspondence comprises a subcarrier spacing, SCS, and a cyclic prefix, CP, type, wherein the CP type is one of a normal CP or an extended CP; • determining, based on location information of the terminal, a TA adjustment value, • determining, based on the TA adjustment value and based on the determined TA granularity, TA information to be used by the terminal on the scheduled frequency domain resource (step 301); • sending the TA information to the terminal, the TA information indicating the TA adjustment value (step 302); • sending a timing advance group, TAG, identity to the terminal, the TAG identity indicating a TAG among a plurality of TAGs for which the TA adjustment value is used, ∘ wherein each of multiple component carriers includes frequency domain resources of a certain bandwidth, and the certain bandwidth is divided in bandwidth parts, thereby providing a plurality of bandwidth parts of multiple component carriers, and each bandwidth part among the plurality of bandwidth parts corresponds to a parameter set among the parameter sets, ∘ wherein each TAG among the plurality of TAGs contains at least one bandwidth part of the plurality of bandwidth parts, and, each of the at least one bandwidth part of the TAG corresponds to a beam direction, the beam direction corresponding to a transmit beam to be used by the terminal when sending a signal using the bandwidth part of the indicated TAG corresponding to the beam direction by using the TA adjustment value for the indicated TAG, the used bandwidth part being the scheduled frequency domain resource. • determining, based on a correspondence between parameter sets and TA granularities and based on a certain parameter set among the parameter sets, a TA granularity, the certain parameter set being a parameter set corresponding to a frequency domain resource, the frequency domain resource being scheduled by the network device for a terminal, wherein in the correspondence, for each TA granularity among the TA granularities, the TA granularity corresponds to a parameter set among the parameter sets, wherein each parameter set among the parameter sets in the correspondence comprises a subcarrier spacing, SCS, and a cyclic prefix, CP, type, wherein the CP type is one of a normal CP or an extended CP; wherein in the correspondence, for each TA granularity among the TA granularities, the TA granularity corresponds to a parameter set among the parameter sets, wherein each parameter set among the parameter sets in the correspondence comprises a subcarrier spacing, SCS, and a cyclic prefix, CP, type, wherein the CP type is one of a normal CP or an extended CP; • determining, based on location information of the terminal, a TA adjustment value, • determining, based on the TA adjustment value and based on the determined TA granularity, TA information to be used by the terminal on the scheduled frequency domain resource (step 301); • sending the TA information to the terminal, the TA information indicating the TA adjustment value (step 302); • sending a timing advance group, TAG, identity to the terminal, the TAG identity indicating a TAG among a plurality of TAGs for which the TA adjustment value is used, ∘ wherein each of multiple component carriers includes frequency domain resources of a certain bandwidth, and the certain bandwidth is divided in bandwidth parts, thereby providing a plurality of bandwidth parts of multiple component carriers, and each bandwidth part among the plurality of bandwidth parts corresponds to a parameter set among the parameter sets, ∘ wherein each TAG among the plurality of TAGs contains at least one bandwidth part of the plurality of bandwidth parts, and, each of the at least one bandwidth part of the TAG corresponds to a beam direction, the beam direction corresponding to a transmit beam to be used by the terminal when sending a signal using the bandwidth part of the indicated TAG corresponding to the beam direction by using the TA adjustment value for the indicated TAG, the used bandwidth part being the scheduled frequency domain resource. ∘ wherein each of multiple component carriers includes frequency domain resources of a certain bandwidth, and the certain bandwidth is divided in bandwidth parts, thereby providing a plurality of bandwidth parts of multiple component carriers, and each bandwidth part among the plurality of bandwidth parts corresponds to a parameter set among the parameter sets, ∘ wherein each TAG among the plurality of TAGs contains at least one bandwidth part of the plurality of bandwidth parts, and, each of the at least one bandwidth part of the TAG corresponds to a beam direction, the beam direction corresponding to a transmit beam to be used by the terminal when sending a signal using the bandwidth part of the indicated TAG corresponding to the beam direction by using the TA adjustment value for the indicated TAG, the used bandwidth part being the scheduled frequency domain resource.