Bluetooth Broadcast Isocronous Group Identity Verification

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Solution Overview

Problem

Bluetooth Low Energy (BLE) broadcast audio technologies face issues with poor privacy and security as the first Bluetooth end cannot control which receiving devices receive the data stream, allowing unauthorized access to the data stream.

Innovation Solution

Establishing a point-to-point connection between the first and second Bluetooth ends to verify identity information, allowing only verified devices to receive the broadcast isochronous group information and thus selectively receive the data stream, enhancing privacy and security by using ACL or SCO connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the first Bluetooth end sends BIGInfo in periodic broadcast form, then all second Bluetooth ends can receive the data stream, but the first Bluetooth end cannot control which devices receive the data stream, resulting in poor privacy and security

Engineering Contradiction:

Improvecapability to control receiving devicesVSAvoidprivacy and security of transmission

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the broadcast information transmission by dividing second Bluetooth ends into different groups based on their identity information (such as device type). Each group receives only the BIGInfo relevant to its category, rather than all BIGInfo. This segmentation enables selective reception, improving both privacy/security and adaptability.

Inventive Principle:

Principle #1Segmentation

2Reliability

If BIGInfo is carried in periodic broadcasts, then all devices can access the information, but bandwidth is wasted and radio resources are consumed

Engineering Contradiction:

Improveinformation accessibilityVSAvoidbandwidth usage and radio resources

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies local quality by tailoring the broadcast information delivery to specific device characteristics. Each second Bluetooth end receives BIGInfo localized to its identity category rather than universal BIGInfo. This reduces unnecessary information transmission, conserving bandwidth and radio resources while maintaining accessibility for authorized devices.

Inventive Principle:

Principle #3Local quality

3Productivity

If the first Bluetooth end uses connectionless broadcast mode, then transmission is simple and efficient, but unauthorized devices can easily steal the data stream

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidunauthorized access and data theft

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements preliminary action by verifying the identity information of second Bluetooth ends before transmitting BIGInfo. The first Bluetooth end pre-establishes which devices are authorized to receive information based on their identity categories. This preliminary verification maintains efficient broadcast transmission while preventing unauthorized access, as only verified devices can successfully receive and process the BIGInfo.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12127282B2Method and system for data transmission, chip, electronic device, and computer readable storage medium

Publication Date: 2024.10.22 SHENZHEN GOODIX TECH CO LTD

AI summary

The present disclosure provides a method and system for data transmission, chip, an electronic device, and a computer readable storage medium. The method applied at a first Bluetooth end includes: establishing a point-to-point connection with a second Bluetooth end; acquiring identity information of the second Bluetooth end through the point-to-point connection; and sending broadcast isochronous group information BIGInfo to the second Bluetooth end through the point-to-point connection when the identity information of the second Bluetooth end is verified, to enable the second Bluetooth end to receive a data stream of a broadcast isochronous group BIG sent by the first Bluetooth end according to the BIGInfo.