A pilot signal sending method, comprising: establishing (S101) a first 1 to 1 correspondence between a carrier identifier among different carrier identifiers and a pilot pattern among pilot patterns of a first type of pilot signal, wherein the first type of pilot signal is used to control a terminal to perform channel measurement, and said pilot patterns that are of the first type of pilot signal and that are corresponding to said different carrier identifiers are orthogonal; establishing (S102) a second 1 to 1 correspondence between the carrier identifier and a resource block set allocated in a carrier to the carrier identifier, wherein the resource block set comprises multiple resource blocks that are continuous both in a time domain and in a frequency domain; acquiring (S103) a target carrier identifier of a target carrier, wherein the target carrier is configured to map the first type of pilot signal; determining (S104), according to the second correspondence, a location of a target resource block set corresponding to the target carrier identifier; determining (S105), according to the first correspondence, a target pilot pattern that is of the first type of pilot signal and that is corresponding to the target carrier identifier; mapping (S106), according to the target pilot pattern, the first type of pilot signal corresponding to the target carrier identifier to each resource block in the target resource block set on the target carrier; sending (S107) the first correspondence and the second correspondence to the terminal; and sending (S108), to the terminal, the target carrier to which the first type of pilot signal is mapped. establishing (S101) a first 1 to 1 correspondence between a carrier identifier among different carrier identifiers and a pilot pattern among pilot patterns of a first type of pilot signal, wherein the first type of pilot signal is used to control a terminal to perform channel measurement, and said pilot patterns that are of the first type of pilot signal and that are corresponding to said different carrier identifiers are orthogonal; establishing (S102) a second 1 to 1 correspondence between the carrier identifier and a resource block set allocated in a carrier to the carrier identifier, wherein the resource block set comprises multiple resource blocks that are continuous both in a time domain and in a frequency domain; acquiring (S103) a target carrier identifier of a target carrier, wherein the target carrier is configured to map the first type of pilot signal; determining (S104), according to the second correspondence, a location of a target resource block set corresponding to the target carrier identifier; determining (S105), according to the first correspondence, a target pilot pattern that is of the first type of pilot signal and that is corresponding to the target carrier identifier; mapping (S106), according to the target pilot pattern, the first type of pilot signal corresponding to the target carrier identifier to each resource block in the target resource block set on the target carrier; sending (S107) the first correspondence and the second correspondence to the terminal; and sending (S108), to the terminal, the target carrier to which the first type of pilot signal is mapped. <EOS>