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

A communication device, comprising:

• a communication unit configured to communicate an Extremely High Throughput Single-User physical layer protocol data unit (EHT SU PPDU), Extremely High Throughput Extended Range Single-User physical layer protocol data unit (EHT ER SU PPDU) and an Extremely High Throughput Multi-User physical layer protocol data unit (EHT MU PPDU);
• at least one memory that stores a set of instructions;
• and
• at least one processing circuit,
• wherein the communication device is caused, by the at least one processing circuit executing the instructions and/or the at least one processing circuit itself operating, to perform operations comprising:
• controlling to communicate, via the communication unit, the EHT SU PPDU including a preamble and a data field;
• and
• controlling to communicate, via the communication unit, the EHT ER SU PPDU including a preamble and a data field;
• controlling to communicate, via the communication unit, the EHT MU PPDU including a preamble and a data field,
• wherein the preamble of the EHT SU PPDU, the preamble of the EHT ER SU PPDU, and the preamble of the EHT MU PPDU include:
• a Legacy Short Training Field (L-STF);
• a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF;
• a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF;
• an RL-SIG arranged immediately after the L-SIG;
• a first Signal Field (SIG) arranged immediately after the RL-SIG;
• an EHT Short Training Field (EHT-STF) arranged after the first SIG;
• and
• an EHT Long Training Field (EHT-LTF) arranged immediately after the EHT-STF, and
• wherein the first SIG consists of a first field group and a second field group, and a total number of bits of the first SIG is 52 bits,
• wherein, in a case of the EHT MU PPDU, the first field group includes a first field comprised of three bits, each of which is located as a 16th bit, a 17th bit and 18th bit of the first field group, a second field comprised of six bits indicating a BSS color for identifying a Basic Service Set (BSS) and a third field comprised of a single bit indicating a direction of the communication,
• wherein, in a case of the EHT MU PPDU, the second field group, that consists of 26 bits, includes a fourth field indicating a CRC and a fifth field of a single bit which is located as an eighth bit of the second field group,
• wherein four bits comprised of the three bits of the first field and the single bit of the fifth field indicates a frequency bandwidth used for communication and is capable to indicate that the frequency bandwidth used for communication is 320 MHz,
• wherein, in a case of the EHT SU PPDU and EHT ER SU PPDU, the first field group includes a sixth field comprised of a single bit located as a 15th bit of the first field group, a seventh field comprised of two bits, each of which is located as a 20th bit and a 21st bit of the first field group and an eighth field indicating a BSS color for identifying a BSS and a ninth field indicating a direction of the communication,
• wherein, in a case of the EHT SU PPDU and EHT ER SU PPDU, the second field group, that consists of 26 bits, includes a tenth field indicating a CRC and an eleventh field comprised of a single bit which is located as a 15th bit of the second field group,
• wherein four bits comprised of the single bit of the sixth field, the two bits of the seventh field and the single bit of the eleventh field indicates a frequency bandwidth used for communication and is capable to indicate that the frequency bandwidth used for communication is 320 MHz,
• wherein, in a case of the EHT MU PPDU, the preamble of the EHT MU PPDU further includes a second SIG that includes a common field and one or more user specific field, wherein the second SIG is arranged immediately after the first SIG and the EHT-STF is arranged immediately after the second SIG,
• wherein the common field includes a RU Allocation subfield whose number of bits constituting the RU Allocation subfield is a multiple of 8, a Center 26-tone RU subfield comprised of a single bit, a CRC subfield comprised of four bits and a Tail subfield comprised of four bits,
• wherein, in a case where the communication device performs transmission using Orthogonal Frequency Division Multiple Access (OFDMA), the user specific field includes a STA-ID subfield comprised of 11 bits, an NSTS subfield comprised of three bits, a TX Beamforming subfield comprised of a single bit, a MCS subfield comprised of four bits, a DCM subfield comprised of a single bit, and a Coding subfield comprised of a single bit,
• wherein, in a case where the communication device performs transmission using Multi User Multi Input Output (MU-MIMO), the user specific field includes a STA-ID subfield comprised of 11 bits, a Spatial Configuration subfield comprised of four bits, a MCS subfield comprised of four bits, a Reserved subfield comprised of a single bit, and a Coding subfield comprised of a single bit,
• wherein, in a case of the EHT SU PPDU, the preamble of the EHT SU PPDU does not include the second SIG, wherein the EHT-STF is arranged immediately after the first SIG, and
• wherein, in a case of the EHT ER SU PPDU, the preamble of the EHT ER SU PPDU does not include the second SIG, wherein the EHT-STF is arranged immediately after the first SIG.