Multi-Band Wi-Fi Data Transmission Negotiation

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Solution Overview

Problem

Current Wi-Fi technologies face limitations in achieving high-speed and throughput for data transmission, particularly in scenarios requiring simultaneous communication across multiple frequency bands like 2.4 GHz, 5.8 GHz, and 6-7 GHz, which are essential for applications such as video transmission and augmented/virtual reality.

Innovation Solution

A data transmission method where devices exchange message frames to negotiate and confirm support for simultaneous data transmission on multiple frequency bands, allowing them to determine and utilize the optimal transmission capabilities across these bands for enhanced rate and throughput.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If devices use existing Wi-Fi technologies for data transmission, then communication can be maintained on single frequency bands, but transmission rate and throughput cannot achieve four times improvement

Engineering Contradiction:
Improvetransmission rate and throughputVSAvoidsupport for simultaneous communication on multiple frequency bands
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent segments the communication channel into multiple frequency bands (2.4 GHz, 5.8 GHz, and 6-7 GHz bands), allowing simultaneous data transmission on multiple bands. This segmentation enables the system to achieve four times improvement in transmission rate and throughput compared to single-band communication, while maintaining compatibility with existing Wi-Fi technologies.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements multi-functionality by enabling devices to simultaneously communicate on multiple frequency bands (2.4 GHz, 5.8 GHz, and 6-7 GHz). The capability negotiation mechanism allows devices to adaptively select and utilize multiple frequency bands based on their capabilities, achieving both high-speed transmission and broad adaptability across different Wi-Fi standards.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If devices negotiate capability information through message frames, then optimal transmission capabilities can be determined, but additional communication overhead is introduced

Engineering Contradiction:
Improvetransmission rate and throughputVSAvoidtime for capability negotiation
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent performs capability negotiation through message frames in advance, before actual data transmission begins. By determining which frequency bands both devices support during the association or authentication phase, the system avoids repeated negotiations during data transmission, thereby minimizing the time loss while enabling optimal multi-band transmission capabilities.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If simultaneous communication on multiple frequency bands is implemented, then transmission rate improves, but device complexity increases

Engineering Contradiction:
Improvetransmission rate and throughputVSAvoidcapability negotiation and coordination mechanism
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where devices exchange capability information through message frames during association or authentication. Each device provides feedback about its supported frequency bands, and the system automatically determines the optimal transmission configuration based on this feedback, reducing the perceived complexity for users while enabling advanced multi-band communication.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12255672B2Data transmission method, apparatus, device, and storage medium
Publication Date: 2025.03.18 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • US12255672B2 patent drawing
  • US12255672B2 patent drawing
  • US12255672B2 patent drawing

AI summary

A data transmission method, an apparatus, a device, and a storage medium are provided. The method includes that: a first device generates a first message frame, where the first message frame carries first capability information, and the first capability information indicates that the first device can support data transmission on at least two frequency bands at the same time; the first device sends the first message frame; a second device receives the first message frame; the second device generates and sends a second message frame; the first device receives the second message frame, where the second message frame carries second capability information, and the second capability information indicates that the second device can support data transmission on at least two frequency bands at the same time; and the first device sends data on at least two frequency bands according to the first capability information and the second capability information.