A method for transmitting a signal, characterized in that , the method comprises: transmitting , by a network side device, a wake-up signal over at least one first object, wherein the wake-up signal comprises information for instructing at least one terminal to receive and/or detect a downlink signal over the first object and at least one second object; and transmitting , by the network side device, the downlink signal over the first object and the at least one second object; wherein the first and second objects are either different component carriers or different bandwidth parts; wherein when the object is the component carrier, a set of all available receiving carriers configured by the network side device to the terminal comprises at least one first component carrier and/or at least one second component carrier; or when the object is the bandwidth part, a set of all available receiving bandwidths configured by the network side device to the terminal comprises at least one first bandwidth part and/or at least one second bandwidth part; wherein the transmitting , by the network side device, the wake-up signal over at least one first object, comprises: transmitting, by the network side device, the wake-up signal over the at least one first component carrier of the set of all available receiving carriers; or, transmitting, by the network side device, the wake-up signal over the at least one first bandwidth part of the set of all available receiving bandwidths. transmitting , by a network side device, a wake-up signal over at least one first object, wherein the wake-up signal comprises information for instructing at least one terminal to receive and/or detect a downlink signal over the first object and at least one second object; and transmitting , by the network side device, the downlink signal over the first object and the at least one second object; wherein the first and second objects are either different component carriers or different bandwidth parts; wherein when the object is the component carrier, a set of all available receiving carriers configured by the network side device to the terminal comprises at least one first component carrier and/or at least one second component carrier; or when the object is the bandwidth part, a set of all available receiving bandwidths configured by the network side device to the terminal comprises at least one first bandwidth part and/or at least one second bandwidth part; wherein the transmitting , by the network side device, the wake-up signal over at least one first object, comprises: transmitting, by the network side device, the wake-up signal over the at least one first component carrier of the set of all available receiving carriers; or, transmitting, by the network side device, the wake-up signal over the at least one first bandwidth part of the set of all available receiving bandwidths. transmitting, by the network side device, the wake-up signal over the at least one first component carrier of the set of all available receiving carriers; or, transmitting, by the network side device, the wake-up signal over the at least one first bandwidth part of the set of all available receiving bandwidths. <EOS>