Control information for multi-user transmissions in WLAN systems

Patent metadata

Field	Value
Publication number	US-12512947-B2
Application number	US-202318348728-A
Country	US
Kind code	B2
Filing date	Jul 7, 2023
Priority date	Aug 7, 2015
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A method is provided. The method includes transmitting, by an access point (AP), a physical layer protocol data unit (PPDU) comprising a plurality of resource units (RUs), each comprising a number of one or more of subcarriers or tones upon which one or more modulated signals are positioned, each of the plurality of RUs sharing a common frequency and mirroring symmetrically or conjugate symmetrically, information between each of the plurality of RUs with respect to a DC tone.

First claim

What is claimed is:

1 . A method, comprising:
transmitting, by an access point (AP), a physical layer protocol data unit (PPDU) comprising a plurality of resource units (RUs), each comprising a number of one or more of subcarriers or tones upon which one or more data modulated signals are positioned, each of the plurality of RUs sharing a common frequency and including portions that are mirrored symmetrically or conjugate symmetrically, information between each of the subcarriers that comprise the plurality of RUs with respect to a center tone included in each RU, each of the mirrored portions are scrambled with a different sequence and the plurality of RUs are transmitted simultaneously.

2 . The method of claim 1 , wherein the PPDU comprises a preamble and a data field, wherein the data field comprises the plurality of RUs.

3 . The method of claim 1 , wherein one or more RUs of the plurality of RUs are transmitted to a same station (STA).

4 . The method of claim 1 , comprising:
applying one or more RUs of the plurality of RUs to a trigger frame.

5 . The method of claim 1 , comprising:
applying one or more RUs of the plurality of RUs to a beacon frame.

6 . The method of claim 1 , comprising:
duplicating one or more RUs of the plurality of RUs, wherein each duplicated RU is multiplied by a different scrambling sequence.

7 . The method of claim 6 , wherein duplicated RUs are one of continuous or non-continuous in frequency.

8 . The method of claim 1 , wherein a channel bandwidth of frames including RUs allocated to the PPDU is equal to one of 80 MHz or 160 MHz.

9 . The method of claim 1 , wherein a signaling of a multi-resource signal transmission is conveyed in one of a common information field or a user-specific information field of a signaling field.

10 . The method of claim 1 , comprising:
assigning a continuous or non-continuous RU comprising two or more duplicated RUs to an STA using RUs, wherein a receiving STA allows any size of received RU.

11 . The method of claim 1 , wherein one of the mirrored portions is transmitted without modification, wherein the other one of the mirrored portions is transmitted using a scrambling sequence.

12 . An access point (AP), comprising:
a processor; and a memory, coupled to the processor, comprising instructions that when executed by the processor are configured to:
transmit a physical layer protocol data unit (PPDU) comprising a plurality of resource units (RUs), each comprising a number of one or more of subcarriers or tones upon which one or more data modulated signals are positioned, each of the plurality of RUs share a common frequency and include portions that are mirrored symmetrically or conjugate symmetrically, information between each of the subcarriers that comprise the plurality of RUs with respect to a center tone are included in each RU, each of the mirrored portions are scrambled with a different sequence and the plurality of RUs are transmitted simultaneously.

13 . The AP of claim 12 , wherein the PPDU comprises a preamble and a data field, wherein the data field comprises the plurality of RUs.

14 . The AP of claim 12 , wherein the processor is configured to transmit one or more RUs of the plurality of RUs to a same station (STA).

15 . The AP of claim 12 , wherein the processor is configured to apply one or more RUs of the plurality of RUs to a trigger frame.

16 . The AP of claim 12 , wherein the processor is configured to apply one or more RUs of the plurality of RUs to a beacon frame.

17 . The AP of claim 12 , wherein the processor is configured to duplicate one or more RUs of the plurality of RUs, wherein each duplicated RU is multiplied by a different scrambling sequence.

18 . The AP of claim 17 , wherein duplicated RUs are one of continuous or non-continuous in frequency.

19 . The AP of claim 12 , wherein a channel bandwidth of frames including RUs allocated to the PPDU is equal to one of 80 MHz or 160 MHz.

20 . The AP of claim 12 , wherein a signaling of a multi-resource signal transmission is conveyed in one of a common information field or a user-specific information field of a signaling field.

21 . The AP of claim 12 , wherein the processor is configured to assign a continuous or non-continuous RU comprising two or more duplicated RUs to an STA using RUs, wherein a receiving STA allows any size of received RU.

22 . The AP of claim 12 , wherein one of the mirrored portions is transmitted without modification, wherein the other one of the mirrored portions is transmitted using a scrambling sequence.

23 . A non-transitory computer readable storage medium comprising instructions, that when read by a processor, cause the processor to perform:
transmitting, by an access point (AP), a physical layer protocol data unit (PPDU) comprising a plurality of resource units (RUs), each comprising a number of one or more of subcarriers or tones upon which one or more data modulated signals are positioned, each of the plurality of RUs sharing a common frequency and include portions that are mirrored symmetrically or conjugate symmetrically, information between each of the subcarriers that comprise the plurality of RUs with respect to a center tone included in each RU, each of the mirrored portions are scrambled with a different sequence and the plurality of RUs are transmitted simultaneously.

24 . The non-transitory computer readable storage medium of claim 23 , wherein the PPDU comprises a preamble and a data field, wherein the data field comprises the plurality of RUs.

25 . The non-transitory computer readable storage medium of claim 23 , wherein one or more RUs of the plurality of RUs are transmitted to a same station (STA).

26 . The non-transitory computer readable storage medium of claim 23 , wherein the instructions cause the processor to perform:
applying one or more RUs of the plurality of RUs to a trigger frame.

27 . The non-transitory computer readable storage medium of claim 23 , wherein the instructions cause the processor to perform:
applying one or more RUs of the plurality of RUs to a beacon frame.

28 . The non-transitory computer readable storage medium of claim 23 , wherein the instructions cause the processor to perform:
duplicating one or more RUs of the plurality of RUs, wherein each duplicated RU is multiplied by a different scrambling sequence.

29 . The non-transitory computer readable storage medium of claim 28 , wherein duplicated RUs are one of continuous or non-continuous in frequency.

30 . The non-transitory computer readable storage medium of claim 23 , wherein a channel bandwidth of frames including RUs allocated to the PPDU is equal to one of 80 MHz or 160 MHz.

31 . The non-transitory computer readable storage medium of claim 23 , wherein a signaling of a multi-resource signal transmission is conveyed in one of a common information field or a user-specific information field of a signaling field.

32 . The non-transitory computer readable storage medium of claim 23 , wherein the instructions cause the processor to perform:
assigning a continuous or non-continuous RU comprising two or more duplicated RUs to an STA using RUs, wherein a receiving STA allows any size of received RU.

33 . The non-transitory

Assignees

• Atlas Global Tech Llc

Inventors

• Noh Yujin
• Lee Daewon
• Moon Sungho
• Kwon Young Hoon

Classifications

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/0037

  Inter-user or inter-terminal allocation · CPC title

• H04L5/0007

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

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W72/23

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