BLE Broadcast Online Device Detection for Sleeping IoT Nodes
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Solution Overview
Problem
Existing methods for detecting online devices in an Internet of Things environment are inefficient, often missing sleeping devices and occupying Bluetooth air interface capabilities, affecting normal Bluetooth functions.
Innovation Solution
Utilizing Bluetooth Low Energy (BLE) broadcast packets for online device detection, where detection request and response packets include network identifiers to accurately identify online devices without establishing persistent connections, allowing devices to remain in a sleep state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional online device detection methods are used, then device detection capability is provided, but Bluetooth air interface capabilities are occupied and sleeping devices are missed
Solution Approach 1:
The patent extracts the device detection function from the main Bluetooth communication protocol and implements it using separate BLE broadcast packets. This separation allows detection to occur independently without occupying the primary Bluetooth air interface capabilities, resolving the contradiction between detection reliability and interface occupation.
Solution Approach 2:
The patent introduces BLE broadcast packets as an intermediary mechanism for device detection. These packets serve as a mediator that enables detection of sleeping devices without requiring full Bluetooth connection establishment, thus improving detection accuracy while minimizing air interface occupation.
2Measurement precision
If conventional online device detection methods are used, then device detection is performed, but sleeping devices are missed
Solution Approach 1:
The patent implements periodic BLE broadcast packet transmission for device detection. Devices can be detected at regular intervals without requiring continuous active connection, enabling sleeping devices to be detected while maintaining detection efficiency through periodic rather than continuous operation.
3Reliability
If BLE broadcast packets are used for detection, then sleeping devices can be detected and air interface is preserved, but network identifier matching is required
Solution Approach 1:
The patent incorporates network identifiers in advance within BLE broadcast packets before detection occurs. This preliminary inclusion of identification information allows receiving devices to quickly match packets to their所属 networks without complex post-reception processing, resolving the contradiction between detection reliability and processing complexity.
Data Source
AI summary
Embodiments of this application provide a communication method and apparatus, and an electronic device. The method includes: releasing a detection request packet by broadcast based on a Bluetooth low energy technology, where the detection request packet is a BLE broadcast packet including a network identifier of a device network on which online device detection is performed; receiving, based on the Bluetooth low energy technology, a detection response packet that is released by broadcast and that includes the network identifier, where the detection response packet is a BLE broadcast packet, and the detection response packet is a response packet generated, based on the detection request packet after the detection request packet is received, by an online device in the device network on which online device detection is performed; and determining the online device in the device network based on the detection response packet.