Frame mapping apparatus and frame mapping method

An apparatus for mapping multiple lower-speed signal transmission frames to a higher-speed signal transmission frame, the apparatus comprising:

• a plurality of buffers configured to buffer the lower-speed signal transmission frames, wherein when a minimum unit of the lower-speed signal transmission frames is a channel, a number of the buffers corresponds to a maximum number of channels that can be multiplexed in the higher-speed signal transmission frame;
• a plurality of determination units configured to determine frequency justification information for the lower-speed signal transmission frames, a number of the determination units corresponding to the maximum number of channels;
• a barrel shifter configured to receive signals output from the buffers;
• and
• a controller configured to control the barrel shifter to map the lower-speed signal transmission frames to the higher-speed signal transmission frame based on external settings for the respective lower-speed signal transmission frames and the frequency justification information determined by the determination units.