Communication Method and Apparatus

An apparatus, comprising:

• a memory comprising instructions;
• and
• one or more processors coupled to the memory and configured to execute the instructions to:
• generate a first orthogonal frequency division multiplexing (OFDM) signal;
• and
• send the first OFDM signal on a first channel in a first frequency band,
• wherein a first quantity of subcarriers corresponding to the first channel is greater than or equal to a second quantity of subcarriers corresponding to a second channel in a second frequency band,
• wherein a lowest frequency of the first frequency band is higher than a highest frequency of the second frequency band,
• wherein the first channel comprises 2M first fundamental channels,
• wherein the second channel comprises 2M second fundamental channels,
• wherein a first bandwidth of the 2M first fundamental channels is a first minimum channel bandwidth supported in the first frequency band,
• wherein a second bandwidth of the 2M second fundamental channels is a second minimum channel bandwidth supported in the second frequency band,
• wherein the first bandwidth is greater than the second bandwidth, and
• wherein M is a first integer greater than or equal to 0.

A computer program product comprising instructions that are stored on a non-transitory computer-readable storage medium and that, when executed by one or more processors, cause an apparatus to:

• generate a first orthogonal frequency division multiplexing (OFDM) signal;
• and
• send the first OFDM signal on a first channel in a first frequency band,
• wherein a first quantity of subcarriers corresponding to the first channel is greater than or equal to a second quantity of subcarriers corresponding to a second channel in a second frequency band,
• wherein a lowest frequency of the first frequency band is higher than a highest frequency of the second frequency band,
• wherein the first channel comprises 2M first fundamental channels,
• wherein the second channel comprises 2M second fundamental channels,
• wherein a first bandwidth of the 2M first fundamental channels is a first minimum channel bandwidth supported in the first frequency band,
• wherein a second bandwidth of the 2M second fundamental channels is a second minimum channel bandwidth supported in the second frequency band,
• wherein the first bandwidth is greater than the second bandwidth, and
• wherein M is a first integer greater than or equal to 0.