Communication device, communication method, and computer-readable storage medium
A communication device communicates a physical (PHY) frame including a preamble and a data field. The preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal Field (L-SIG), an EHT (Extremely High Throughput) Signal Field (EHT-SIG-A), an EHT Short Training Field (EHT-STF), and an EHT Long Training Field (EHT-LTF), and the EHT-SIG-A includes at least one subfield indicating that the communication device performs communication in a frequency band more than 160 MHz.
1 . 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.
2 . The communication device according to claim 1 , wherein the communication device is a camera having an image capturing function or a printer having a printing function.
3 . The communication device according to claim 1 , wherein
the first field group of the EHT SU PPDU further includes a Format field, a Beam Change field, a MCS field, a DCM field, a Spatial Reuse field, a G1+LTF Size field, and a NSTS And Midamble Periodicity field,
the second field group of the EHT SU PPDU further includes a TXOP field, a Coding field, a LDPC Extra Symbol Segment field, a STBC field, a Beamformed field, a Pre-FEC Padding Factor field, a PE Disambiguity field, a Doppler field, and a Tail field,
the first field group of the EHT ER SU PPDU further includes a Format field, a Beam Change field, a MCS field, a DCM field, a Spatial Reuse field, a G1+LTF Size field, and a NSTS And Midamble Periodicity field,
the second field group of the EHT ER SU PPDU further includes a TXOP field, a Coding field, a LDPC Extra Symbol Segment field, a STBC field, a Beamformed field, a Pre-FEC Padding Factor field, a PE Disambiguity field, a Doppler field, and a Tail field,
the first field group of the EHT MU PPDU further includes a SIGB MCS, a SIGB DCM field, a Spatial Reuse field, a Number of EHT-SIG-B Symbols or MU-MIMO Users field, a SIG Compression field, a Gi+LTF Size field, and a Doppler field, and
the second field group of the EHT MU PPDU further includes a TXOP field, a Number of EHT-LTF Symbols And Midamble Periodicity field, a LDPC Extra Symbol Segment field, a STBC field, a Pre-FEC Padding Factor field, a PE Disambiguity field, and a Tail field.
4 . A communication method for controlling a communication device having a communication unit comprising:
communicating, via the communication unit, an Extremely High Throughput Single-User physical layer protocol data unit (EHT SU PPDU) including a preamble and a data field;
communicating, via the communication unit, an Extremely High Throughput Extended Range Single-User physical layer protocol data unit (EHT ER SU PPDU) including a preamble and a data field;
communicating, via the communication unit, an Extremely High Throughput Multi-User physical layer protocol data unit (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;
a 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.
5 . The communication method according to claim 4 , wherein
the first field group of the EHT SU PPDU further includes a Format field, a Beam Change field, a MCS field, a DCM field, a Spatial Reuse field, a G1+LTF Size field, and a NSTS And Midamble Periodicity field,
the second field group of the EHT SU PPDU further includes a TXOP field, a Coding field, a LDPC Extra Symbol Segment field, a STBC field, a Beamformed field, a Pre-FEC Padding Factor field, a PE Disambiguity field, a Doppler field, and a Tail field,
the first field group of the EHT ER SU PPDU further includes a Format field, a Beam Change field, a MCS field, a DCM field, a Spatial Reuse field, a G1+LTF Size field, and a NSTS And Midamble Periodicity field,
the second field group of the EHT ER SU PPDU further includes a TXOP field, a Coding field, a LDPC Extra Symbol Segment field, a STBC field, a Beamformed field, a Pre-FEC Padding Factor field, a PE Disambiguity field, a Doppler field, and a Tail field,
the first field group of the EHT MU PPDU further includes a SIGB MCS, a SIGB DCM field, a Spatial Reuse field, a Number of EHT-SIG-B Symbols or MU-MIMO Users field, a SIG Compression field, a Gi+LTF Size field, and a Doppler field, and
the second field group of the EHT MU PPDU further includes a TXOP field, a Number of EHT-LTF Symbols And Midamble Periodicity field, a LDPC Extra Symbol Segment field, a STBC field, a Pre-FEC Padding Factor field, a PE Disambiguity field, and a Tail field.