MIMO Bluetooth Module Synchronized Transceiver Control

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Solution Overview

Problem

Existing Bluetooth transceivers experience significant mutual interference when used in MIMO structures, which affects communication efficiency and reliability.

Innovation Solution

A MIMO Bluetooth module with a control unit that operates multiple Bluetooth transceivers in synchronized modes, using frequency division and non-overlapping frequency maps to prevent interference, allowing for simultaneous transmission and reception without inter-radio interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple Bluetooth transceivers are used in MIMO structure, then communication bandwidth and data throughput are improved, but mutual interference between transceivers increases

Engineering Contradiction:

Improvedata throughputVSAvoidmutual interference

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent divides the frequency spectrum into separate frequency maps for different Bluetooth transceivers. Each transceiver is assigned a specific frequency map (first frequency map, second frequency map, etc.) that does not overlap with others, effectively segmenting the frequency resource to eliminate mutual interference while maintaining MIMO throughput benefits

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces frequency dimension as an additional resource dimension for MIMO operation. Instead of only using spatial dimension (multiple antennas), the system now utilizes frequency dimension by assigning different frequency maps to different transceivers, creating a space-frequency MIMO structure that resolves interference while maintaining high throughput

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If Bluetooth transceivers operate simultaneously in synchronized mode, then communication efficiency is improved, but frequency overlap causes interference

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidinterference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent assigns different local frequency qualities to different transceivers. Each transceiver operates in its designated frequency map with specific frequency characteristics that are locally optimized and do not conflict with other transceivers, allowing simultaneous operation without interference

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the frequency parameter for each transceiver to ensure non-overlapping operation. By adjusting and assigning specific frequency ranges (first frequency map, second frequency map) to different transceivers, the system enables simultaneous synchronized operation while preventing frequency overlap and resulting interference

Inventive Principle:

Principle #35Parameter changes

3Object-generated harmful factors

If frequency division is used to reduce interference, then mutual interference is suppressed, but device complexity increases

Engineering Contradiction:

Improvemutual interferenceVSAvoidcontrol complexity

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent implements a unified control mechanism that manages multiple frequency maps and transceivers through a single control unit. This control unit handles frequency selection, hopping coordination, and synchronization for all transceivers, providing a universal control solution that suppresses interference without requiring separate complex control systems for each transceiver

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11329702B2Multi-in multi-out bluetooth module, and wireless device using the multi-in multi-out bluetooth module

Publication Date: 2022.05.10 MEDIATEK INC

AI summary

A multi-input multi-output (MIMO) Bluetooth module with effectively suppressed mutual interference is disclosed. The MIMO Bluetooth module has multiple Bluetooth transceivers which operate in a synchronized transmission mode, in which no Bluetooth transceiver is permitted to transmit data when any of the Bluetooth transceivers are receiving data.