A data transmission method for data transmission in a multi-parameter system, wherein a plurality of parameters comprises a plurality of subcarrier spacings, the method performed by a sending device of the multi-parameter system and comprising: transmitting data over a physical signal; wherein before the transmitting the data over a physical signal, the method further comprises: configuring the physical signal in the multi-parameter system, wherein the configuring the physical signal in the multi-parameter system comprises: configuring a plurality of synchronization signals and a plurality of subcarrier spacings that are used when a first sequence is transmitted over each synchronization signal based on a carrier frequency or a service type, wherein the plurality of subcarrier spacings are configured based on the carrier frequency in the manner that different carrier frequencies correspond to different subcarrier spacings, or the plurality of subcarrier spacings are configured based on the service type in the manner that different service types correspond to different subcarrier spacings, wherein the service type comprises one of the following: eMBB, URLLC, and mMTC; determining, for each synchronization signal, a first sequence transmitted over the synchronization signal; and determining, for each synchronization signal, a location of a resource to which the first sequence is mapped. transmitting data over a physical signal; wherein before the transmitting the data over a physical signal, the method further comprises: configuring the physical signal in the multi-parameter system, wherein the configuring the physical signal in the multi-parameter system comprises: configuring a plurality of synchronization signals and a plurality of subcarrier spacings that are used when a first sequence is transmitted over each synchronization signal based on a carrier frequency or a service type, wherein the plurality of subcarrier spacings are configured based on the carrier frequency in the manner that different carrier frequencies correspond to different subcarrier spacings, or the plurality of subcarrier spacings are configured based on the service type in the manner that different service types correspond to different subcarrier spacings, wherein the service type comprises one of the following: eMBB, URLLC, and mMTC; determining, for each synchronization signal, a first sequence transmitted over the synchronization signal; and determining, for each synchronization signal, a location of a resource to which the first sequence is mapped. configuring a plurality of synchronization signals and a plurality of subcarrier spacings that are used when a first sequence is transmitted over each synchronization signal based on a carrier frequency or a service type, wherein the plurality of subcarrier spacings are configured based on the carrier frequency in the manner that different carrier frequencies correspond to different subcarrier spacings, or the plurality of subcarrier spacings are configured based on the service type in the manner that different service types correspond to different subcarrier spacings, wherein the service type comprises one of the following: eMBB, URLLC, and mMTC; determining, for each synchronization signal, a first sequence transmitted over the synchronization signal; and determining, for each synchronization signal, a location of a resource to which the first sequence is mapped.