Using enhanced signal spectral TX mask for improved multi-user grouping and increased spectral efficiency

Patent metadata

Field	Value
Publication number	US-11991101-B2
Application number	US-202117189876-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Sep 4, 2018
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

A system of wireless communication by an access point (AP) comprising: a receiver adapted to receive a plurality of messages each originated from one of a plurality of client devices and each indicative of a spectral mask capability thereof; a processor adapted to calculate a channel assignment scheme for allocating bandwidth and/or communication channels to the plurality of client devices based on the spectral mask capability of each of the plurality of client devices; and a transmitter adapted to transmit to each of the plurality of client devices instructions to set transmission frequency based on the calculated channel assignment scheme.

First claim

What is claimed is:

1. An apparatus, comprising:
a memory configured to store instructions; and
one or more processors coupled to the memory and configured to:
establish wireless local area network (WLAN) connections between the apparatus and a plurality of client devices;
receive, through the WLAN connections and from the plurality of client devices, a plurality of messages, wherein each message of the plurality of messages indicates a spectral mask capability of one of the plurality of client devices;
calculate, based on the spectral mask capability of each of the plurality of client devices, a channel assignment scheme for allocating bandwidth or communication channels within a WLAN of the apparatus and the plurality of client devices to the plurality of client devices; and
transmit, through the WLAN connections and to each of the plurality of client devices, instructions to set a transmission frequency based on the channel assignment scheme.

2. The apparatus of claim 1 , wherein the spectral mask capability defines a number of spectral masks available for use by each of the plurality of client devices.

3. The apparatus of claim 2 , wherein each of the number of spectral masks has a different distribution of signal power across each of a plurality of channels.

4. The apparatus of claim 1 , wherein the spectral mask capability defines whether or not each of the plurality of client devices is configured to employ more than one spectral mask.

5. The apparatus of claim 1 , wherein the channel assignment scheme allocates frequencies for transmissions of the plurality of client devices such that a transmission frequency overlap therebetween is reduced.

6. The apparatus of claim 1 , wherein the channel assignment scheme temporally schedules transmissions of one or more client devices from the plurality of client devices that are configured to use only a single spectral mask with other transmissions of one or more other client devices from the plurality of client devices that are configured to use a plurality of spectral masks.

7. The apparatus of claim 1 , wherein each of the plurality of client devices has a different received signal strength indication (RSSI).

8. The apparatus of claim 1 , wherein the spectral mask capability is encoded in a physical layer (PHY) capability information field.

9. The apparatus of claim 1 , wherein the instructions are transmitted to each of the plurality of client devices in a control message.

10. The apparatus of claim 1 , wherein the plurality of messages and the instructions are encoded in an orthogonal frequency-division multiple access (OFDMA) format.

11. The apparatus of claim 1 , wherein the plurality of messages comprises WI-FI protocol messages.

12. A method, comprising:
establishing wireless local area network (WLAN) connections between an access point (AP) and a plurality of client devices;
receiving, through the WLAN connections and from the plurality of client devices, a plurality of messages, wherein each of the plurality of messages indicates a spectral mask capability of one of the plurality of client devices;
calculating, based on the spectral mask capability of each of the plurality of client devices, a channel assignment scheme for allocating bandwidth or communication channels with a WLAN of the AP and the plurality of client devices to the plurality of client devices; and
transmitting, through the WLAN connections and to each of the plurality of client devices, instructions to set a transmission frequency based on the channel assignment scheme.

13. The method of claim 12 , wherein the spectral mask capability defines a number of spectral masks available for use by each of the plurality of client devices.

14. The method of claim 13 , wherein each of the number of spectral masks has a different distribution of signal power across each of a plurality of channels.

15. The method of claim 12 , wherein the spectral mask capability defines whether or not each of the plurality of client devices is configured to employ more than one spectral mask.

16. The method of claim 12 , wherein the channel assignment scheme allocates frequencies for transmissions of the plurality of client devices such that a transmission frequency overlap therebetween is reduced.

17. The method of claim 12 , wherein the channel assignment scheme temporally schedules transmissions of one or more client devices from the plurality of client devices that are configured to use only a single spectral mask with other transmissions of one or more other client devices from the plurality of client devices that are configured to use a plurality of spectral masks.

18. The method of claim 12 , wherein each of the plurality of client devices has a different received signal strength indication (RSSI).

19. The method of claim 12 , wherein the spectral mask capability is encoded in one of:
a physical layer (PHY) capability information field; or
an orthogonal frequency-division multiple access (OFDMA) format.

20. A computer program product comprising instructions stored on a non-transitory computer-readable medium that, when executed by one or more processors, cause an apparatus to:
establish wireless local area network (WLAN) connections between the apparatus and a plurality of client devices;
receive, through the WLAN connections and from the plurality of client devices, a plurality of messages, wherein each message of the plurality of messages indicates a spectral mask capability of one of the plurality of client devices;
calculate, based on the spectral mask capability of each of the plurality of client devices, a channel assignment scheme for allocating bandwidth or communication channels within a WLAN of the apparatus and the plurality of client devices to the plurality of client devices; and
transmit, through the WLAN connections and to each of the plurality of client devices, instructions to set a transmission frequency based on the channel assignment scheme.

Assignees

• Huawei Tech Co Ltd

Inventors

• Redlich Oded
• Shilo Shimon
• Weitzman Avi
• Tsodik Genadiy
• Ezri Doron

Classifications

• H04L5/0037 Primary

  Inter-user or inter-terminal allocation · CPC title

• H04L5/0062

  Avoidance of ingress interference, e.g. ham radio channels · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/23

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

• H04W72/51 Primary

  based on terminal or device properties · CPC title