Communication device, communication method thereof, information processing device, control method thereof, and computer-readable storage medium

1. A communication device, comprising:

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 processing circuit executing the instructions and/or the at least processing circuit itself operating, to perform operations comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, a Repeated Legacy Signal (RL-SIG) field, an Extremely High Throughput (EHT) Short Training Field (EHT-STF), and an EHT Long Training Field (EHT-LTF),

wherein another Signal field is placed between the RL-SIG and the EHT-STF in the preamble, and the another Signal field includes a first field in which a value indicating a version is stored, and

wherein in a case where the value indicating the version is a value indicating an EHT, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is not the value indicating the EHT, the field that composes the radio frame and that is received after reception of the another Signal Field is not decoded.

2. The communication device according to claim 1 , further comprising:

at least one antenna,

wherein the radio frame is received via the at least one antenna.

3. The communication device according to claim 1 , wherein the first field includes three bits.

4. The communication device according to claim 1 , wherein a predetermined number of bits in a head of the another Signal field are allocated as the first field.

5. The communication device according to claim 4 , wherein the predetermined number is three.

6. The communication device according to claim 1 , wherein the another Signal field includes a BSS color field.

7. The communication device according to claim 1 , wherein the communication device is a station that communicates with an access point.

8. The communication device according to claim 1 , wherein the communication device is an access point.

9. The communication device according to claim 1 , wherein the value indicating the EHT is zero.

10. The communication device according to claim 1 , wherein the radio frame in which the value indicating the EHT is set in the first field is an EHT Multi User (MU) Physical Layer (PHY) Protocol Data Unit (PPDU), an EHT Extended Range (ER) PPDU, or an EHT Trigger Based (TB) PPDU.

11. A communication method performed by a communication device, comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, a Repeated Legacy Signal (RL-SIG) field, an Extremely High Throughput (EHT) Short Training Field (EHT-STF), and an EHT Long Training Field (EHT-LTF),

wherein another Signal field is placed between the RL-SIG and the EHT-STF in the preamble, and the another Signal field includes a first field in which a value indicating a version is stored, and

wherein in a case where the value indicating the version is a value indicating an EHT, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is not the value indicating the EHT, the field that composes the radio frame and that is received after reception of the another Signal Field is not decoded.

12. A non-transitory computer-readable storage medium that stores a program for causing a computer included in a communication device to perform operations comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, a Repeated Legacy Signal (RL-SIG) field, an Extremely High Throughput (EHT) Short Training Field (EHT-STF), and an EHT Long Training Field (EHT-LTF),

wherein another Signal field is placed between the RL-SIG and the EHT-STF in the preamble, and the another Signal field includes a first field in which a value indicating a version is stored, and

wherein in a case where the value indicating the version is a value indicating an EHT, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is not the value indicating the EHT, the field that composes the radio frame and that is received after reception of the another Signal Field is not decoded.

13. A communication device, comprising:

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 processing circuit executing the instructions and/or the at least processing circuit itself operating, to perform operations comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, and another Signal field,

wherein the another Signal field is received at least after reception of the L-SIG field, and the another Signal field includes a first field in which a value indicating a version is stored,

wherein in a case where the value indicating the version is a first value indicating a first version, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is greater than the first value, the field that composes the received radio frame and that is received after reception of the another Signal Field is not decoded, and

wherein at least one of the value indicating the version that is capable of being stored in the first field is a value indicating an EHT.

14. The communication device according to claim 13 , wherein the preamble further includes a Repeated Legacy Signal (RL-SIG) field, and

wherein the another Signal field is received after reception of the RL-SIG field, and the RL-SIG field is received after reception of the L-SIG field.

15. The communication device according to claim 13 , further comprising:

at least one antenna;

wherein the radio frame is received via the at least one antenna.

16. The communication device according to claim 13 , wherein the first field includes three bits.

17. The communication device according to claim 13 , wherein a predetermined number of bits in a head of the another Signal field are allocated as the first field.

18. The communication device according to claim 17 , wherein the predetermined number is three.

19. The communication device according to claim 13 , wherein the another Signal field includes a BSS color field.

20. The communication device according to claim 13 , wherein the communication device is a station that communicates with an access point.

21. The communication device according to claim 13 , wherein the communication device is an access point.

22. The communication device according to claim 13 , wherein the value indicating the EHT is zero.

23. The communication device according to claim 13 , wherein the radio frame in which the value indicating the EHT is set in the first field is an EHT Multi User (MU) Physical Layer (PHY) Protocol Data Unit (PPDU), an EHT Extended Range (ER) PPDU, or an EHT Trigger Based (TB) PPDU.

24. The communication device according to claim 13 , wherein the first value is zero and the first version is the EHT.

25. The communication device according to claim 13 , wherein the first version is a subsequent version of the EHT.

26. A communication method performed by a communication device, comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, and another Signal field,

wherein the another Signal field is received at least after reception of the L-SIG field, and the another Signal field includes a first field in which a value indicating a version is stored,

wherein in a case where the value indicating the version is a first value indicating a first version, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is greater than the first value, the field that composes the received radio frame and that is received after reception of the another Signal Field is not decoded, and

wherein at least one of the value indicating the version that is capable of being stored in the first field is a value indicating an EHT.

27. A non-transitory computer-readable storage medium that stores a program for causing a computer included in a communication device to perform operations comprising:

receiving a radio frame including a preamble and a data field of a physical layer (PHY); and

decoding the radio frame,

wherein the preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal (L-SIG) field, and another Signal field,

wherein the another Signal field is received at least after reception of the L-SIG field, and the another Signal field includes a first field in which a value indicating a version is stored,

wherein in a case where the value indicating the version is a first value indicating a first version, at least one field that composes the radio frame and that is received after reception of the another Signal Field is decoded, and in a case where the value indicating the version is greater than the first value, the field that composes the received radio frame and that is received after reception of the another Signal Field is not decoded, and

wherein at least one of the value indicating the version that is capable of being stored in the first field is a value indicating an EHT.