A communication method performed by a wireless network device, comprising: sending first common information in a first subband of a carrier; and sending, second common information in a second subband of the carrier, the second subband being different from the first subband; wherein the first common information comprises at least one of a first synchronization signal, a first broadcast signal, or a first system message, wherein the first common information at least comprises the first synchronization signal and the first synchronization signal included in the first common information comprises a first primary synchronization signal and a first secondary synchronization signal, the first primary synchronization signal being from a plurality of synchronization sequences corresponding to a frame structure of a first service to be carried on the carrier; the second common information comprises at least one of a second synchronization signal, a second broadcast signal, or a second system message, wherein the second common information at least comprises the second synchronization signal and the second synchronization signal included in the second common information comprises a second primary synchronization signal and a second secondary synchronization signal, the second primary synchronization signal being from a plurality of synchronization sequences corresponding to a frame structure of a second service to be carried on the carrier; and the first common information comprises information that indicates a frequency offset between a first channel carrying the first common information and a second channel carrying the second common information. sending first common information in a first subband of a carrier; and sending, second common information in a second subband of the carrier, the second subband being different from the first subband; wherein the first common information comprises at least one of a first synchronization signal, a first broadcast signal, or a first system message, wherein the first common information at least comprises the first synchronization signal and the first synchronization signal included in the first common information comprises a first primary synchronization signal and a first secondary synchronization signal, the first primary synchronization signal being from a plurality of synchronization sequences corresponding to a frame structure of a first service to be carried on the carrier; the second common information comprises at least one of a second synchronization signal, a second broadcast signal, or a second system message, wherein the second common information at least comprises the second synchronization signal and the second synchronization signal included in the second common information comprises a second primary synchronization signal and a second secondary synchronization signal, the second primary synchronization signal being from a plurality of synchronization sequences corresponding to a frame structure of a second service to be carried on the carrier; and the first common information comprises information that indicates a frequency offset between a first channel carrying the first common information and a second channel carrying the second common information.