BLE Peripheral Handover Using Synchronized Receive-Only Switching

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Solution Overview

Problem

Existing wireless communication systems using low-throughput devices experience disruptions and time gaps during handover processes due to disconnect-and-reconnect approaches, leading to temporary communication losses when the central device changes location.

Innovation Solution

Implementing a seamless handover mechanism using vendor-specific HCI commands that synchronize peripheral BLE devices between active and passive modes, allowing continuous communication by switching between devices based on signal strength and location information without explicit disconnection and reconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If disconnect-and-reconnect approach is used for changing wireless connection, then the central device can switch between peripheral devices, but communication interruption and time gaps occur

Engineering Contradiction:
Improveability to switch between peripheral devicesVSAvoidcommunication continuity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by establishing a preliminary connection with the target peripheral device before disconnecting from the current device. The central device performs scanning and connection setup in advance, so that when handover is needed, the connection can be immediately established without interruption, thus eliminating communication gaps while maintaining the ability to switch between devices

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If disconnect-and-reconnect approach is used, then device switching is possible, but time gap and communication loss occur during handover

Engineering Contradiction:
Improvedevice switching capabilityVSAvoidhandover time gap
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent implements continuity of useful action by maintaining continuous communication connection during device switching. Instead of disconnecting and reconnecting, the system keeps the connection active and seamless, ensuring that communication continues without interruption or time loss while enabling easy switching between peripheral devices

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS20240365194A1Seamless handover of wireless connections using low-throughput communication devices, including related methods and apparatuses
Publication Date: 2024.10.31 MICROCHIP TECHNOLOGY INC
  • US20240365194A1 patent drawing
  • US20240365194A1 patent drawing
  • US20240365194A1 patent drawing

AI summary

A method of a controller comprises receiving a first message from a peripheral device that operates in a receiving and transmitting mode for communication of data over a wireless connection with a central device; sending a second message to respective ones of one or more other peripheral devices, the second message indicating a command to synchronize with the wireless connection in a receiving-only mode; and at least partially responsive to identifying a handover condition, sending a third message to a respective one of the one or more other peripheral devices, the third message indicating a command to switch to the receiving and transmitting mode for communication of data over the wireless connection with the central device.