Bluetooth Network Establishing via Gateway Advertising
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Solution Overview
Problem
Existing Bluetooth technologies require manual pairing for point-to-point connections and lack the ability to automatically form networks with multiple devices, leading to low bandwidth utilization due to devices needing to be in scanner mode most of the time.
Innovation Solution
A Bluetooth network establishing system and method that uses a gateway device to broadcast connectable undirected advertising packets, allowing node devices to scan and determine whether to establish communication connections with the gateway or relay devices to join the network, thereby expanding the network automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mesh network mechanism with advertiser and scanner is used, then network communication can be performed, but the Bluetooth device as scanner cannot determine the time point when the advertiser sends data, requiring it to be in scanner mode most of the time, which reduces bandwidth utilization
Solution Approach 1:
The patent implements dynamic role switching between advertiser and scanner modes. Devices can transition between these states based on network formation needs, allowing them to be in advertiser mode (consuming less bandwidth) when not actively searching for connections, thereby improving overall bandwidth utilization while maintaining reliable communication
Solution Approach 2:
The patent employs periodic advertising intervals where devices broadcast their presence at specific time intervals rather than continuously. This periodic action allows scanners to know when to expect data transmissions, eliminating the need for continuous scanning and improving bandwidth efficiency
2Ease of operation
If point-to-point connection is used, then two Bluetooth devices can communicate with each other, but manual pairing is required and only two devices can communicate, preventing automatic formation of Bluetooth networks with more devices
Solution Approach 1:
The patent merges multiple point-to-point connections into a mesh network structure where multiple devices can communicate simultaneously. By combining the advertising and scanning capabilities of individual devices into a coordinated network protocol, it enables automatic network formation while maintaining ease of connection establishment
Solution Approach 2:
The patent introduces a gateway device as an intermediary that coordinates network formation. The gateway receives advertising packets, determines which devices should connect, and facilitates the automatic establishment of multiple connections, thereby enabling network formation capability while keeping individual device operations simple
3Reliability
If a device remains in scanner mode continuously to detect advertising packets, then it can join the Bluetooth network, but the bandwidth utilization of the Bluetooth network becomes low
Solution Approach 1:
The patent implements preliminary advertising where devices broadcast their presence and connection requirements in advance. Scanners can then use this pre-information to know when to expect connections, allowing them to switch to advertiser mode after joining the network rather than remaining in scanner mode continuously, thus improving bandwidth utilization
Data Source
AI summary
A Bluetooth network establishing system and method are provided. The system includes a plurality of node devices and a gateway device. The gateway device is used to connect a Bluetooth network to an external network and broadcast a first connectable undirected advertising packet. A first node device among the node devices executes a first scan operation to receive a first advertising packet, wherein the first advertising packet includes the first connectable undirected advertising packet. The first node device determines whether to establish a first communication connection with the gateway devices to join the Bluetooth network according to the first advertising packet. After joining the Bluetooth network, the first node device broadcasts a second connectable undirected advertising packet.