Multi-Bluetooth Radio Device with Frequency Separation

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Solution Overview

Problem

Existing Bluetooth systems face challenges in maintaining reliable data communications and reducing radio frequency interference between multiple Bluetooth radios, which can lead to latency and interrupted services, especially when accessing computing services through a mobile device.

Innovation Solution

A computing device equipped with multiple Bluetooth radios and a third wireless radio (such as a cellular radio) that establishes synchronized Bluetooth links for synchronous and asynchronous communications, using shared memory to reduce latency and avoid re-encoding packets, and coordinating frequency hopping to minimize RF interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple Bluetooth radios are used to establish simultaneous connections, then communication versatility and service access are improved, but radio frequency interference and latency increase

Engineering Contradiction:

Improvecommunication versatilityVSAvoiddata communication reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the communication system into separate piconets, with each Bluetooth radio operating as a primary device in its own piconet. This segmentation isolates the communication channels, allowing multiple connections without direct interference while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces frequency dimension by assigning different frequency bands to different Bluetooth radios. The first Bluetooth radio operates in a first frequency band while the second Bluetooth radio operates in a second frequency band, adding a frequency dimension to separate the communication channels and eliminate interference.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If multiple Bluetooth radios operate simultaneously in the same frequency band, then device connectivity is improved, but radio frequency interference increases

Engineering Contradiction:

Improvedevice connectivityVSAvoidradio frequency interference

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent adds a frequency dimension to separate the operating bands of different Bluetooth radios. By assigning the first Bluetooth radio to a first frequency band and the second Bluetooth radio to a second frequency band, the system eliminates RF interference while maintaining full device connectivity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The processor acts as an intermediary that coordinates the operation of multiple Bluetooth radios. It manages the frequency band assignments and coordinates communication timing between radios, preventing interference while enabling simultaneous connectivity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If Bluetooth packets are re-encoded during relay, then protocol compatibility is improved, but latency increases

Engineering Contradiction:

Improveprotocol compatibilityVSAvoidcommunication latency

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent creates a direct Bluetooth connection between the first and second Bluetooth radios, copying the communication path to bypass the mobile device. This parallel copying of the data path allows packets to be relayed directly without re-encoding, reducing latency while maintaining protocol compatibility through the established Bluetooth protocol stack.

Inventive Principle:

Principle #26Copying

4Device complexity

If a single Bluetooth radio is used, then device complexity is reduced, but communication reliability and service access deteriorate

Engineering Contradiction:

Improveradio configurationVSAvoidservice access reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the Bluetooth communication function into multiple independent radios, each operating as a primary device in its own piconet. This segmentation allows simultaneous establishment of multiple independent connections, improving service access reliability while distributing the complexity across separate hardware components.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each Bluetooth radio is designed with universal functionality to operate as a primary device, establish piconets, and relay packets independently. This multi-functionality allows the system to achieve high reliability through redundancy while keeping each individual radio relatively simple in design.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11304042B1Multi-bluetooth radio device

Publication Date: 2022.04.12 AMAZON TECH INC

AI summary

A multi-Bluetooth radio device is described. In an example, the device includes a first Bluetooth radio storing first instructions that, upon execution on the first Bluetooth radio, configure the first Bluetooth radio to perform first operations. The first operations include establishing a first communication link with a first device and receiving, over the first communication link, an audio packet from the first device. The device also includes a second Bluetooth radio storing second instructions that, upon execution on the second Bluetooth radio, configure the second Bluetooth radio to perform second operations. The second operations include establishing a second communication link with a second device and transmitting, over the second communication link, the audio packet to the second device.