Link adaptation for extremely high throughput systems

Patent metadata

Field	Value
Publication number	US-12301343-B2
Application number	US-202117475541-A
Country	US
Kind code	B2
Filing date	Sep 15, 2021
Priority date	Sep 15, 2021
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

The application relates to link adaptation for extremely high throughput (EHT) systems. In order to transmit parameters for EHT link adaptation, a control ID field in the HT control field of a MAC header is used to indicate that the A-control field of the HT control field contains EHT link adaptation information, and to indicate the presence of an additional EHT link adaptation extension field containing further EHT link adaptation information. Alternatively, B25 of the control information of the A-control field is used to indicate that the control field contains EHT link adaptation information, and to indicate the presence of an additional EHT link adaptation extension field containing further EHT link adaptation information.

First claim

The invention claimed is:

1. A method comprising:
communicating, by a wireless communication device, a medium access control (MAC) frame comprising a MAC header, frame body and frame check sequence;
the MAC header comprising:
a high throughput (HT) control sub-field, the HT control sub-field indicating presence or absence of an extremely high throughput link adaptation (EHT LA) extension field, the HT control sub-field containing a control ID value and control information;
when the HT control sub-field indicates that an extremely high throughput link adaptation (EHT LA) extension field is present, the control information in the HT control sub-field together with the EHT LA extension field contains link adaptation (LA) parameters for EHT communication.

2. The method of claim 1 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B0, . . . , B25, and wherein B25 indicates presence or absence of an EHT LA extension field.

3. The method of claim 1 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B0, . . . , B25, and wherein the 4-bit control ID indicates presence or absence of an EHT LA extension field.

4. The method of claim 3 wherein:
a first value of the 4-bit control ID is associated with a first format for link adaptation parameters solely within the 26 bits of control information;
a second value of the 4-bit control ID is associated with a second format for link adaptation parameters within the 26 bits of control information and the EHT LA extension field.

5. The method of claim 1 wherein:
when the HT control sub-field indicates presence of an EHT LA extension field, the HT control sub-field comprises fields for NSS for SU-MIMO and MCS for SU-MIMO, and the EHT LA extension field contains fields for NSS for MU-MIMO and MCS for MU-MIMO.

6. The method of claim 1 wherein communicating comprises transmitting by an access point (AP).

7. The method of claim 1 wherein communicating comprises receiving by an access point.

8. The method of claim 1 wherein communicating comprises transmitting by a non-access point (AP) station (STA).

9. The method of claim 1 wherein communicating comprises receiving by a non-AP station (STA).

10. An access point comprising a processor and memory, the access point configured to execute a method comprising:
communicating, by the access point, a medium access control (MAC) frame comprising a MAC header, frame body and frame check sequence;
the MAC header comprising:
a high throughput (HT) control sub-field, the HT control sub-field indicating presence or absence of an extremely high throughput link adaptation (EHT LA) extension field, the HT control sub-field containing a control ID value and control information;
when the HT control sub-field indicates that an extremely high throughput link adaptation (EHT LA) extension field is present, the control information in the HT control sub-field together with the EHT LA extension field contains link adaptation (LA) parameters for EHT communication.

11. The access point of claim 10 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B0, . . . ,B25, and wherein B25 indicates presence or absence of an EHT LA extension field.

12. The access point of claim 10 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B0, . . . ,B25, and wherein the 4-bit control ID indicates presence or absence of an EHT LA extension field.

13. The access point of claim 12 wherein:
a first value of the 4-bit control ID is associated with a first format for link adaptation parameters solely within the 26 bits of control information;
a second value of the 4-bit control ID is associated with a second format for link adaptation parameters within the 26 bits of control information and the EHT LA extension field.

14. The access point of claim 10 wherein:
when the HT control sub-field indicates presence of an EHT LA extension field, the HT control sub-field comprises fields for NSS for SU-MIMO and MCS for SU-MIMO, and the EHT LA extension field contains fields for NSS for MU-MIMO and MCS for MU-MIMO.

15. A non-AP station comprising a processor and memory, the non-AP station configured to execute a method comprising:
communicating, by the non-AP station, a medium access control (MAC) frame comprising a MAC header, frame body and frame check sequence;
the MAC header comprising:
a high throughput (HT) control sub-field, the HT control sub-field indicating presence or absence of an extremely high throughput link adaptation (EHT LA) extension field, the HT control sub-field containing a control ID value and control information;
when the HT control sub-field indicates that an extremely high throughput link adaptation (EHT LA) extension field is present, the control information in the HT control sub-field together with the EHT LA extension field contains link adaptation (LA) parameters for EHT communication.

16. The non-AP station of claim 15 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B 0 , . . . ,B25, and wherein B25 indicates presence or absence of an EHT LA extension field.

17. The non-AP station of claim 15 wherein:
the HT control sub-field comprises a 4-bit control ID and 26 bits of control information B 0 , . . . ,B25, and wherein the 4-bit control ID indicates presence or absence of an EHT LA extension field.

18. The non-AP station of claim 17 wherein:
a first value of the 4-bit control ID is associated with a first format for link adaptation parameters solely within the 26 bits of control information;
a second value of the 4-bit control ID is associated with a second format for link adaptation parameters within the 26 bits of control information and the EHT LA extension field.

19. The non-AP station of claim 15 wherein:
when the HT control sub-field indicates presence of an EHT LA extension field, the HT control sub-field comprises fields for NSS for SU-MIMO and MCS for SU-MIMO, and the EHT LA extension field contains fields for NSS for MU-MIMO and MCS for MU-MIMO.

Assignees

• Suh Jung Hoon
• Aboul Magd Osama
• Xin Yan
• Au Kwok Shum
• Huawei Tech Co Ltd

Inventors

• Suh Jung Hoon
• Aboul-Magd Osama
• Xin Yan
• Au Kwok Shum

Classifications

• H04W80/02

  Data link layer protocols · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04L1/0061

  Error detection codes · CPC title

• H04L1/06

  using space diversity · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title