Communication apparatus, information processing apparatus, control method, and storage medium

Patent metadata

Field	Value
Publication number	US-11729035-B2
Application number	US-202016908088-A
Country	US
Kind code	B2
Filing date	Jun 22, 2020
Priority date	Jun 28, 2019
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A communication apparatus transmits or receives an Extremely High Throughput (EHT) single-user (SU) physical-layer protocol data unit (PPDU), an EHT extended range (ER) SU PPDU, or an EHT multi-user (MU) PPDU. The transmitted or received EHT PPDU includes an EHT signal field (EHT-SIG) which includes a field indicating information regarding semi-orthogonal multiple access (SOMA).

First claim

What is claimed is:

1. A communication apparatus comprising:
at least one processer; and
at least one memory coupled to the at least one processor and having stored thereon instructions that, when executed by the at least one processor, cause the communication apparatus to act as:
a generation unit configured to generate a multi-user physical-layer protocol data unit (MU PPDU); and
a transmission unit configured to transmit the MU PPDU generated by the generation unit to a plurality of other communication apparatuses,
wherein the generated MU PPDU includes
a legacy signal field (L-SIG), and
a second signal field, wherein the second signal field is to be communicated at least after the L-SIG,
wherein the second signal field generated by the generation unit includes a common field common to the plurality of other communication apparatuses, and the common field contains first information on whether the communication apparatus uses a semi-orthogonal multiple access (SOMA) technique for MU PPDU transmission, and the second signal field includes an individual field individually for each of the plurality of other communication apparatuses, and the individual fields contains at least an identifier for identifying a data transmission destination and second information indicating whether an other communication apparatus corresponding to the identifier is required to perform combined constellation processing or not.

2. The communication apparatus according to claim 1 , wherein the transmission unit includes an antenna used to transmit the MU PPDU generated by the generation unit.

3. The communication apparatus according to claim 1 , wherein in a case where the SOMA technique is used to multiplex data included in a data field of the generated MU PPDU to be transmitted by the transmission unit, the generation unit generates the second signal field including the second information indicating whether or not to perform the combined constellation processing, and in a case where the SOMA technique is not used to multiplex the data, the generation unit generates the second signal field that does not include the second information indicating whether or not to perform the combined constellation processing.

4. The communication apparatus according to claim 1 , wherein the transmitted MU PPDU is compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard, and the second information indicates whether the combined constellation processing is required to be performed when communication using the SOMA technique is performed.

5. The communication apparatus according to claim 1 , wherein each of the individual fields further includes a parameter regarding the SOMA technique used in the transmission of the data included in the data field of the generated MU PPDU.

6. The communication apparatus according to claim 5 , wherein the parameter regarding SOMA includes at least one of information indicating a destination of the data, information indicating a modulation method and a coding rate of the data, information regarding transmission power of the data.

7. A communication apparatus comprising:
at least one processer and
at least one memory coupled to the at least one processor and having stored thereon instructions that, when executed by the at least one processor, cause the communication apparatus to act as:
a reception unit configured to receive a multi user physical-layer protocol data unit (MU PPDU) that includes a legacy signal field (L-SIG) and a second signal field, the second signal field is to be communicated at least after the L-SIG, and
a decoding unit configured to decode data included in the MU PPDU received by the reception unit,
wherein the received MU PPDU is an MU PPDU that is transmitted to a plurality of communication apparatuses including the communication apparatus, the second signal field included in the received MU PPDU includes a common field common to the plurality of communication apparatuses, and the common field contains first information on whether the communication apparatus uses a semi-orthogonal multiple access (SOMA) technique for MU PPDU communication, and the second signal field includes an individual field individually for each of the plurality of other communication apparatuses, and the individual fields contains at least an identifier for identifying a data transmission destination and second information indicating whether a communication apparatus corresponding to the identifier is required to perform combined constellation processing or not, and
wherein, in a case where an MU PPDU that includes data multiplexed using the SOMA technique is received by the reception unit, the decoding unit identifies an individual field corresponding to the communication apparatus, and performs decoding of the multiplexed data based on the second information included in the identified individual field.

8. The communication apparatus according to claim 7 , wherein the reception unit includes an antenna used to receive the MU PPDU.

9. The communication apparatus according to claim 7 , wherein the decoding unit identifies an individual field corresponding to the communication apparatus, and, when information indicating that the combined constellation processing is required to be performed is included in the identified individual field, based on a parameter for the SOMA technique included in the individual field and based on the multiplexed data, the decoding unit performs the combined constellation processing to decode data addressed to the communication apparatus.

10. The communication apparatus according to claim 7 , wherein the received MU PPDU is compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series standard.

11. The communication apparatus according to claim 7 , wherein the received MU PPDU further includes information indicating whether SOMA was used to multiplex data included in the data field of the received MU PPDU.

12. The communication apparatus according to claim 7 , wherein the information regarding SOMA includes a parameter regarding SOMA used in the transmission of the data included in the data field of the received MUPPDU.

13. The communication apparatus according to claim 12 , wherein the parameter regarding SOMA includes at least one of information indicating a destination of the data, information indicating a modulation method and a coding rate of the data, information regarding transmission power of the data.

14. A control method of a communication apparatus, the control method comprising:
generating a multi-user physical-layer protocol data unit (MU PPDU); and
transmitting the MU PPDU generated by the generating to a plurality of other communication apparatuses, wherein the generated MU PPDU includes
a legacy signal field (L-SIG), and
a second signal field, wherein the second signal field is to be communicated at least after the L-SIG,
wherein the second signal field generated by the generation unit includes a common field common to the plurality of other communication apparatuses, and the common field contains first information on whether the communication apparatus uses a semi-orthogonal multiple access (SOMA) technique for MU PPDU transmission, and the second signal field includes an individual field individually for each of the plurality of other communication apparatuses, and the individual fields contains at least an identifier for identifying a data transmission destination and second information indicating whether an other communication apparatus corresponding to the identifier is required to perform combined constellation processing or not.

Assignees

• Canon Kk

Inventors

• Takada Tomoyuki

Classifications

• H04L27/2613 Primary

  Structure of the reference signals · CPC title

• H04L1/0006

  by adapting the transmission format · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L27/2085

  with more than one phase shift per symbol period · CPC title

• H04L27/2602

  Signal structure · CPC title