Bluetooth Measurement Apparatus Version Detection

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Solution Overview

Problem

Existing measurement apparatuses for Bluetooth devices struggle with compatibility between different Bluetooth core specification versions, leading to issues where the desired parameters cannot be set correctly, and users must manually determine and select the appropriate test commands and parameter groups, which is cumbersome, especially for non-experts.

Innovation Solution

A measurement apparatus and method that automatically specify the Bluetooth core specification version supported by a device under test by transmitting command packets and determining error responses, allowing for automatic selection of the appropriate core specification version for measurement, thereby simplifying the measurement process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a measurement apparatus uses a fixed command packet for a specific Bluetooth core specification version, then the measurement process is simple, but the apparatus cannot measure devices with different Bluetooth versions

Engineering Contradiction:

Improvecompatibility with different Bluetooth core specification versionsVSAvoidcomplexity of version detection and command packet selection

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The measurement apparatus performs preliminary version detection by transmitting a detection command packet before the actual measurement. This preliminary action identifies the Bluetooth core specification version of the device under test, allowing the system to select the appropriate command packet format and parameter groups in advance, thereby avoiding compatibility issues during measurement

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adapts its behavior based on the detected Bluetooth version. The command packet transmission format, parameter groups, and measurement procedures are adjusted according to the identified version (4.x, 5.0, or 5.1), enabling the apparatus to optimize its operation for each specific device type rather than using a fixed configuration

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the measurement apparatus manually determines the Bluetooth version, then the measurement process can be accurate, but the operation becomes cumbersome and time-consuming

Engineering Contradiction:

Improveease of use for non-expert usersVSAvoidtime required for manual version determination

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The measurement apparatus performs self-service by automatically detecting the Bluetooth core specification version of the device under test through automated command packet transmission and error response analysis. This eliminates the need for users to manually determine the version, making the system easy to operate for non-experts while reducing the time required for setup

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system uses feedback from error responses to automatically determine the Bluetooth version. When a command packet is transmitted, the apparatus analyzes the error response (or lack thereof) to infer the device's version, then uses this information to select the appropriate measurement parameters and proceed with the measurement automatically

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If the measurement apparatus transmits command packets with multiple parameter groups, then more functionality is supported, but compatibility with older Bluetooth versions decreases

Engineering Contradiction:

Improvesupport for multiple parameter groupsVSAvoidcompatibility reliability across versions

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system segments parameter groups by Bluetooth version, organizing them into distinct sets: parameter group A for version 4.x, parameter group B for version 5.0, and parameter group C for version 5.1. After detecting the device version, the apparatus selects only the appropriate parameter group, avoiding transmission of incompatible parameters and ensuring reliable operation for each version

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11206186B2Measurement apparatus and measurement method

Publication Date: 2021.12.21 ANRITSU CORP

AI summary

There is provided a measurement apparatus and a measurement method capable of easily performing measurement on a DUT by automatically specifying a Bluetooth (registered trademark) core specification version supported by the DUT. A command packet corresponding to the highest Bluetooth core specification version is transmitted to the DUT, in a case where an event including an error response is returned from the DUT, a command packet corresponding to the next lower Bluetooth core specification version than the command packet of the returned event continuously transmitted to the DUT, in a case where an event not including an error response is returned from the DUT, the Bluetooth core specification version of the command packet of the returned event is specified as the Bluetooth core specification version supported by the DUT, and measurement is performed on the DUT by using the command packet corresponding to the specified Bluetooth core specification version.