Communication device, communication method, and computer-readable storage medium

A communication device that transmits a physical (PHY) frame including a preamble and a data field, wherein the preamble includes:

• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included, and
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area.

A communication device that receives a physical (PHY) frame including a preamble and a data field, and processes the received data field,

• wherein the preamble includes:
• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included,
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area. and
• the communication device processes the data field based on the information indicated in the area.

A communication method for transmitting a physical (PHY) frame including a preamble and a data field, wherein the preamble includes:

• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included, and
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area.

A communication method, comprising:

• receiving a physical (PHY) frame including a preamble and a data field;
• and
• processing the received data field,
• wherein the preamble includes:
• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included,
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area. and
• in the processing of the received signal, the data field is processed based on the information indicated in the area.

A non-transitory computer readable storage medium that stores a program for causing a computer in a communication device to transmit a physical (PHY) frame including a preamble and a data field, wherein the preamble includes:

• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included, and
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area.

A non-transitory computer readable storage medium that stores a program for causing a computer in a communication device to receive a physical (PHY) frame including a preamble and a data field, and to process the received data field,

• wherein the preamble includes:
• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the frame;
• and
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the frame,
• wherein the preamble further includes a first Signal Field (SIG) different from the L-SIG and arranged after the L-SIG,
• the first SIG includes an area in which information indicating a modulation scheme and which one of a Uniform Constellation (UC) scheme and a Non Uniform Constellation (NUC) scheme is used as the modulation scheme is included,
• the data field includes data that has undergone modulation corresponding to the modulation scheme and the information indicated in the area. and
• the program causes the computer to process the data field based on the information indicated in the area.