Bluetooth Advertising Packet Sensor Data Transfer
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Solution Overview
Problem
Conventional communication techniques, such as Bluetooth devices, are power-intensive and inefficient for transferring sensor data between devices, especially in mobile devices with low-capacity batteries, and can be hindered when all data channels are occupied, limiting the ability to transfer data between devices.
Innovation Solution
The method involves broadcasting sensor data in Bluetooth advertising channel packets without establishing a data connection, allowing devices to transmit and receive sensor data without needing to detect each other in advance or share the same frequency channel, using Bluetooth Low Energy protocol to reduce power consumption and enable data transfer even when channels are already in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional Bluetooth communication protocols are used to transfer sensor data between devices, then data can be transmitted between devices, but power consumption is excessive and battery life is reduced
Solution Approach 1:
The patent extracts the data transfer function from the connection establishment process. Instead of requiring a full Bluetooth connection setup (advertising, scanning, connection request, channel allocation), the invention transfers sensor data directly through advertising packets without establishing a formal data connection. This separates the data transfer capability from the connection management overhead, significantly reducing power consumption while maintaining data transfer reliability.
Solution Approach 2:
The patent embeds sensor data in advance within advertising packets that are continuously broadcast. The receiving device can extract and process this pre-packaged data without needing to initiate a connection sequence. This preliminary preparation of data in transmit-ready format eliminates the power-intensive connection establishment phase while ensuring data is immediately available for transfer.
2Adaptability or versatility
If Bluetooth data connection channels are occupied by other sensors, then existing connections are maintained, but additional sensor data cannot be transferred
Solution Approach 1:
The patent makes the advertising channel multi-functional by using it both for device discovery/connection initiation (traditional function) and for direct sensor data transfer (new function). This universal usage of the advertising channel allows sensor data to be transmitted alongside other Bluetooth connections without requiring additional dedicated data channels, thereby increasing adaptability while avoiding the power cost of establishing separate connection channels.
3Reliability
If devices establish data connections before transferring sensor data, then reliable communication is ensured, but power consumption increases and channel availability is reduced
Solution Approach 1:
The patent extracts the essential data transfer function from the complete connection establishment sequence. By using advertising packets that contain both device identification and sensor data, the invention removes the need for scanning, connection requests, and channel allocation steps. This extraction maintains communication reliability through the structured advertising packet format while eliminating the power-intensive intermediate steps of traditional connection establishment.
Data Source
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AI summary
A low power method of wirelessly transmitting sensor data between devices is disclosed in which a data connection is not required to be established between the devices in order to transfer the sensor data. The method comprises providing a first device (550) having sensor data therein received from at least one sensor. The first device (550) is operated in an advertising state so as to periodically and wirelessly broadcast data packets, wherein each data packet includes an identifier for identifying the first device and also includes said data from the at least one sensor (561, 562). A second device (552) is operated in a scanning state in which the second device (552) scans for data packets broadcast by other devices. The second device (552) receives (563) a data packet from the first device (550), determines the identity of the first device from said identifier, extracts the sensor data (564), and provides an output that indicates the identity of the first device and the sensor data associated with the first device (550).