SUBCARRIER INFORMATION INDICATION METHOD, APPARATUS AND SYSTEM

The present invention provides a subcarrier information indicating method, including: selecting an offset according to a maximum quantity of bits that a subcarrier is capable of carrying, where a difference between the maximum quantity of bits that the subcarrier is capable of carrying and the selected offset is greater than 0 and less than or equal to 15 (201); obtaining a difference obtained by subtracting the offset from a quantity of bits that need to be actually carried by the subcarrier, and if the difference is not less than 0, sending the difference to a peer device as a value b (203); and sending the offset to the peer device, and instructing the peer device to obtain, according to the value b and the offset, the quantity of bits that need to be actually carried by the subcarrier (205). The method can not only be compatible with an existing mode, but also implement a mode of carrying more than 15 bits by a subcarrier. Therefore, a subcarrier carrying capability supported by a device can be used to a maximum extent.