Efficient signaling and addressing in wireless local area network systems

Patent metadata

Field	Value
Publication number	US-12388916-B2
Application number	US-202217809883-A
Country	US
Kind code	B2
Filing date	Jun 29, 2022
Priority date	May 5, 2015
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

Methods and apparatuses for scheduling and indicating scheduling information in a wireless local area network (WLAN). A station (STA) includes a transceiver configured to receive a header for a protocol data unit and a controller configured to identify common information for a plurality of STAs that are scheduled in the WLAN from a common field in the header and to identify user-specific information for the STA from a user-specific field in the header that follows the common field. An access point (AP) includes a controller configured to include common information for a plurality STAs that are scheduled in the WLAN in a common field in a header of a protocol data unit, and to include user-specific information for the STAs in a user-specific field in the header that follows the common field. The AP also includes a transceiver configured to transmit the protocol data unit including the header.

First claim

What is claimed is:

1. An apparatus of a station (STA) in a wireless local area network (WLAN), the apparatus configured to:
receive a protocol data unit associated with a plurality of resource units (RUs) of data,
identify a common field for STAs of a content channel in the protocol data unit, wherein the common field includes information on RU allocation indicating an arrangement of the RUs in a frequency domain and a number of multi-user multiple-input multiple-output (MU-MIMO) users in an MU-MIMO resource, and
identify user-specific information corresponding to the STA from a user-specific field of the content channel in the protocol data unit, wherein the user-specific field follows the common field.

2. The apparatus of claim 1 , wherein:
the user-specific field includes a plurality of user fields corresponding to the STAs, and
each of the plurality of user fields includes user-specific information corresponding to a STA.

3. The apparatus of claim 1 , wherein a plurality of bits of the common field are used for the RU allocation.

4. The apparatus of claim 1 , wherein the user-specific information includes information which is used to decode the protocol data unit for the STA.

5. The apparatus of claim 1 , wherein the user-specific information includes information of a modulation and coding scheme (MCS), information for indicating Low Density Parity Check (LDPC) coding, and information indicating a number of spatial streams.

6. The apparatus of claim 1 , wherein:
the content channel and another content channel are included in the protocol data unit being an 80 MHz physical layer protocol data unit (PPDU), and
each of the content channel and another content channel is duplicated per a 20 MHz.

7. The apparatus of claim 1 , wherein a RU corresponding to the STA is indicated based on the information on the RU allocation and the user-specific field.

8. The apparatus of claim 1 , wherein the content channel is included in a high efficiency signal B (HE-SIG-B) field in the protocol data unit.

9. An apparatus of an access point (AP) in a wireless local area network (WLAN), the apparatus configured to;
generate a protocol data unit associated with a plurality of resource units (RUs) of data, wherein a content channel in the protocol data unit includes a common field for stations (STAs) and a user-specific field,
wherein the common field includes information on RU allocation indicating an arrangement of the RUs in a frequency domain and a number of multi-user multiple-input multiple-output (MU-MIMO) users in an MU-MIMO resource,
wherein the user-specific field of the content channel in the protocol data unit includes user-specific information corresponding to a STA of the STAs, and
wherein the user-specific field follows the common field; and

transmit the protocol data unit.

10. The apparatus of claim 9 , wherein:
the user-specific field includes a plurality of user fields corresponding to the STAs, and
each of the plurality of user fields includes user-specific information corresponding to a STA.

11. The apparatus of claim 9 , wherein a plurality of bits of the common field are used for the RU allocation.

12. The apparatus of claim 9 , wherein the user-specific information includes information which is used to decode the protocol data unit for the STA.

13. The apparatus of claim 9 , wherein the user-specific information includes information of a modulation and coding scheme (MCS), information for indicating Low Density Parity Check (LDPC) coding, and information indicating a number of spatial streams.

14. The apparatus of claim 9 , wherein:
the content channel and another content channel are included in the protocol data unit being an 80 MHz physical layer protocol data unit (PPDU), and
each of the content channel and another content channel is duplicated per a 20 MHz.

15. The apparatus of claim 9 , wherein a RU corresponding to the STA is indicated based on the information on the RU allocation and the user-specific field.

16. The apparatus of claim 9 , wherein the content channel is included in a high efficiency signal B (HE-SIG-B) field in the protocol data unit.

17. A method performed by a station (STA) in a wireless local area network (WLAN), the method comprising:
receiving a protocol data unit associated with a plurality of resource units (RUs) of data;
identifying a common field for STAs of a content channel in the protocol data unit, wherein the common field includes information on RU allocation indicating an arrangement of the RUs in a frequency domain and a number of multi-user multiple-input multiple-output (MU-MIMO) users in an MU-MIMO resource; and
identifying user-specific information corresponding to the STA from a user-specific field of the content channel in the protocol data unit, wherein the user-specific field follows the common field.

18. The method of claim 17 , wherein:
the user-specific field includes a plurality of user fields corresponding to the STAs, and
each of the plurality of user fields includes user-specific information corresponding to a STA.

19. The method of claim 17 , wherein a plurality of bits of the common field are used for the RU allocation.

20. The method of claim 17 , wherein the user-specific information includes information which is used to decode the protocol data unit for the STA.

21. The method of claim 17 , wherein the user-specific information includes information of a modulation and coding scheme (MCS), information for indicating Low Density Parity Check (LDPC) coding, and information indicating a number of spatial streams.

22. The method of claim 17 , wherein:
the content channel and another content channel are included in the protocol data unit being an 80 MHz physical layer protocol data unit (PPDU), and
each of the content channel and another content channel is duplicated per a 20 MHz.

23. The method of claim 17 , wherein a RU corresponding to the STA is indicated based on the information on the RU allocation and the user-specific field.

24. The method of claim 17 , wherein the content channel is included in a high efficiency signal B (HE-SIG-B) field in the protocol data unit.

25. A method performed by an access point (AP) in a wireless local area network (WLAN), the method comprising:
generating a protocol data unit associated with a plurality of resource units (RUs) of data, wherein a content channel in the protocol data unit includes a common field for stations (STAs) and a user-specific field,
wherein the common field includes information on RU allocation indicating an arrangement of the RUs in a frequency domain and a number of multi-user multiple-input multiple-output (MU-MIMO) users in an MU-MIMO resource,
wherein the user-specific field of the content channel in the protocol data unit includes user-specific information corresponding to a STA of the STAs, and
wherein the user-specific field follows the common field; and
transmitting the protocol data unit.

26. The method of claim 25 , wherein:
the user-specific field includes a plurality of user fields corresponding to the STAs, and
each of the plurality of user fields includes user-specific information corresponding to a STA.

27. The method of claim 25 , wherein a plurality of bits of the common field are used for the RU allocation.

28. The method of claim 25 , wherein the user-specific information inc

Assignees

• Samsung Electronics Co Ltd

Inventors

• Josiam Kaushik M
• Taori Rakesh

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04L65/40

  Support for services or applications · CPC title

• H04L27/2602

  Signal structure · CPC title

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title