Preamble puncturing bandwidth allocation

Patent metadata

Field	Value
Publication number	US-12531651-B2
Application number	US-202318467319-A
Country	US
Kind code	B2
Filing date	Sep 14, 2023
Priority date	Sep 14, 2023
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

An example wireless networking device (e.g., Access point) dynamically managing preamble puncturing for OFDM-based communications. The wireless networking device determines first criteria of a signal quality and further determines to allow preamble puncturing, wherein the signal quality of the determines the occupancy of a subchannel. Based on the determination to preamble puncture, apply dynamically, preamble puncturing to an adjacent subchannel. The wireless networking device further monitors the subchannel signal quality and determines based on a second criteria, an amount of bandwidth useable from an adjacent bandwidth. The wireless networking device, based on the second criteria, dynamically allocate bandwidth from the adjacent subchannel.

First claim

What is claimed is:

1 . An electronic device comprising:
a transceiver; and a processor to:
scan for radio frequency (RF) channels, wherein the RF channels are defined bandwidths that correspond to orthogonal frequency-division multiplexing (OFDM)-based channels;
establish a connection with a client device based on a client device requirement, and further assign a subchannel with a bandwidth to the RF channels, wherein the bandwidth of the assigned subchannel is less than bandwidth associated with a client device bandwidth;
monitor subchannel signal quality metric (SQM) and apply preamble puncturing to an adjacent subchannel based on a first determination that the SQM is less than a first threshold; and
subsequent to applying the preamble puncturing, allocate bandwidth to provision from the adjacent subchannel based on a subchannel second SQM exceeding a second threshold.

2 . The electronic device of claim 1 , wherein the processor is to apply preamble puncturing based on an incumbent device occupying a specific portion of a subchannel bandwidth.

3 . The electronic device of claim 1 , wherein the SQM is an interference energy and the subchannel second SQM is a signal to noise ratio (SNR) or a bit error rate (BER).

4 . The electronic device of claim 1 , wherein the processor is to determine that the SQM is greater than a first threshold and allocates a full bandwidth of the subchannel to the client device.

5 . The electronic device of claim 3 , wherein the processor, subsequent to applying the preamble puncturing, is to dynamically allocate a first subchannel and the adjacent subchannel based on a combination of the SNR and BER exceeding a second threshold.

6 . The electronic device of claim 1 , wherein before applying preamble puncturing, the bandwidth of the subchannel is assigned a full bandwidth, wherein the electronic device reduces a subchannel bandwidth based on the preamble puncturing.

7 . The electronic device of claim 1 , wherein the processor is to receive SNR data from the client device.

8 . A non-transitory computer-readable medium comprising computer-readable instructions which, when executed by a processor of an electronic device, cause the electronic device to:
identify an RF channel operable with a client device, wherein a RF channel bandwidth exceeds an assigned subchannel; identify an incumbent device in a portion of a first adjacent subchannel to the assigned subchannel; determine to apply preamble puncturing to the first adjacent subchannel based on subchannel puncturing criteria; and subsequent to applying the preamble puncturing, dynamically allocate bandwidth from an adjacent subchannel, wherein the dynamically allocated bandwidth is based on signal quality of the adjacent subchannel being greater than a threshold.

9 . The non-transitory computer-readable medium of claim 8 , wherein the instructions, when executed by the processor, further cause the electronic device to dynamically allocate bandwidth to the first adjacent subchannel based on signal quality of the adjacent subchannel being greater than a threshold.

10 . The non-transitory computer-readable medium of claim 8 , wherein before applying preamble puncturing, the bandwidth of the assigned subchannel is assigned a full bandwidth, and wherein the instructions, when executed by the processor, further cause the electronic device to determine to apply preamble puncturing of available subchannel bandwidth based on an occupied bandwidth of the incumbent device.

11 . The non-transitory computer-readable medium of claim 8 , wherein identifying an RF channel operable with a client device further comprises determining that second client device is operating on a required subchannel.

12 . The non-transitory computer-readable medium of claim 8 , wherein before applying preamble puncturing the bandwidth of the assigned subchannel is assigned a full bandwidth, and wherein the instructions, when executed by the processor, further cause the electronic device to determine to continue to allocate the full bandwidth based on a determination that the subchannel puncturing criteria is not satisfied.

13 . The non-transitory computer-readable medium of claim 8 , wherein before applying preamble puncturing, the bandwidth of the assigned subchannel is assigned a full bandwidth, and wherein the instructions, when executed by the processor, further cause the electronic device to determine to continue to allocate the full bandwidth based on a determination that an incumbent device is not present in the assigned subchannel.

14 . The non-transitory computer-readable medium of claim 8 , wherein the instructions when executed further cause the client device to monitor and collect a SNR data and inform the electronic device of the SNR data collected.

15 . An electronic device comprising:
a transceiver; and a processor to:
establish a connection with a host device, wherein the host device assigns a subchannel to a radio frequency (RF) channel corresponding to orthogonal frequency-division multiplexing (OFDM)-based channels;
transmit first measured first signal quality data of a received data to the host device;
transmit second measured second signal quality data of the received data to the host device; and
receive, from the host device, preamble punctured adjacent subchannel allocation information based on the first measured first signal quality data being greater than a first threshold and allocated bandwidth provisioned from the adjacent subchannel based on the second measured second signal quality data.

16 . The electronic device of claim 15 , wherein the processor is to receive a subchannel with a full bandwidth based on the transmitted first measured first signal quality data being greater than a first threshold.

17 . The electronic device of claim 15 , wherein receiving the preamble punctured adjacent subchannel based on the subchannel puncturing criteria not meeting a specified threshold.

18 . The electronic device of claim 15 , wherein the second measured second signal quality data determines subchannel bit error rate (BER), signal error rate (SER), and signal to noise ratio (SNR).

19 . The electronic device of claim 15 , wherein the first measured first signal quality data determines an incumbent device is occupying a specified bandwidth of the subchannel.

20 . The electronic device of claim 15 , wherein the electronic device is a first electronic device in a local area and the host device is a first host device in a local area.

Assignees

• Hewlett Packard Development Co

Inventors

• Lin I-Chen
• Yang Yao Cheng
• Wei Yung-Chang

Classifications

• H04L1/0068

  by puncturing · CPC title

• H04L1/0026 Primary

  Transmission of channel quality indication · CPC title

• H04L5/003 Primary

  Arrangements for allocating sub-channels of the transmission path · CPC title