Methods and systems for communicating a message through a communication network are provided. A method for receiving a message through a communication network is provided, where the message is partitioned into at least two parts each of which is carried in a corresponding modulated part of a first modulated signal frame, and the at least two modulated parts of the first modulated signal frame have different power levels, the method including: receiving the first modulated signal frame; obtaining control information of the message from the first modulated signal frame; and obtaining the message carried in the first modulated signal frame based on the control information.