Multi-Channel Data Transmission with Radar-Triggered Preamble Puncturing

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Solution Overview

Problem

Existing data transmitting devices face reduced transmission efficiency and disconnection due to the need to vacate channels when radar signals are detected, leading to bandwidth reduction and repeated channel availability checks.

Innovation Solution

Implementing a method and device that perform channel availability checks on multiple channels, puncture preambles on noise channels with radar signals, and maintain data transmission on other channels, allowing for immediate recovery of noise channels post-check without stopping overall transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a channel availability check is executed and a radar signal is detected, then the channel can be vacated to avoid interference, but the bandwidth drops from 160 MHz to 80 MHz and transmission efficiency is reduced

Engineering Contradiction:

Improvechannel usage safetyVSAvoidtransmission efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The 160 MHz channel is segmented into multiple 20 MHz sub-channels. When a radar signal is detected in one sub-channel, only that specific sub-channel is vacated while other sub-channels continue transmission, preventing complete bandwidth reduction

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different quality treatment is applied to different parts of the channel. The noisy sub-channel is excluded from data transmission while clean sub-channels maintain full transmission capability, optimizing overall system performance

Inventive Principle:

Principle #3Local quality

2Reliability

If the channel is vacated due to radar signal detection, then interference is avoided, but another channel availability check must be executed to use the channel again, leading to disconnection and user inconvenience

Engineering Contradiction:

Improvechannel interference avoidanceVSAvoidchannel recovery time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary channel availability checks on all sub-channels before transmission begins. This allows the system to pre-identify clean sub-channels and maintain transmission on them without requiring interruption for additional checks

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Data transmission continues continuously on clean sub-channels even when radar signals are detected in other sub-channels. The system maintains uninterrupted useful action by routing data through available clean paths without stopping transmission

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS20250338138A1Data transmitting method and data transmitting device

Publication Date: 2025.10.30 REALTEK SEMICON CORP

AI summary

A data transmitting method includes following steps: executing a channel availability check to multiple channels to check whether the channels comprise a radar signal; if a noise channel of the channels comprises the radar signal, executing a preamble puncturing to the noise channel corresponding to the radar signal in order to stop transmitting data through the noise channel; transmitting data through part channels excluding the noise channel of the channels, wherein a first bandwidth of the noise channel is less than or equal to a second bandwidth of the part channels; after a non-occupancy period ends, executing the channel availability check to the noise channel to check whether the noise channel comprises the radar signal; and if the noise channel does not comprise the radar signal, recovering the noise channel, and transmitting data through the noise channel and the part channels of the plurality of channels.