#Make radbeacon sned notification Bluetooth#
ABI Research latest forecast predicts annual Bluetooth device shipments to reach 5 billion by 2021. Some services have reported that in the last quarter of 2016, 8 out of the 13 million sensors registered in their network, were beacons. They are commonly used in indoor navigation or in positioning systems.
BLE-based beacons are devices that broadcast specific data packets periodically in order to indicate its presence or to transmit certain information. In recent years, beacons, along with wearables, are the fastest pace-growing devices within the BLE ecosystem. The performed experiments show the feasibility of the proposed solution and its superiority, in terms of latency and energy consumption, with respect to approaches based on Generic Attribute Profile (GATT) when multiple users connect to a mote or in scenarios where latency is not a restriction, but where low-energy consumption is essential. Thus, the beacon specification is extended in order to increase its ability to manage unlimited sensors in a telemetry system without interfering in its normal operation with Eddystone frames. In order to demonstrate the capabilities of the designed protocols, the most restrictive (LP4S-6) is tested after implementing it for a telemetry application in a beacon based on Eddystone (Google’s open beacon format). Thus, three protocols are defined depending on the beacon hardware characteristics: LP4S-6 (for resource-constraint beacons), LP4S-X (for more powerful beacons) and LP4S-J (for beacons able to run complex firmware). This article proposes a family of protocols named Lightweight Protocol for Sensors (LP4S) that provides fast responses and enables plug-and-play mechanisms that allow IoT telemetry systems to discover new nodes and to describe and auto-register the sensors and actuators connected to a beacon. Among the different commercial IoT devices, Bluetooth and Bluetooth Low Energy (BLE)-based beacons, which broadcast periodically certain data packets to notify their presence, have experienced a remarkable growth, specially due to their application in indoor positioning systems. Due to such constraints, IoT devices usually require lightweight protocols that optimize the use of resources and energy consumption. The Internet of Things (IoT) involves a wide variety of heterogeneous technologies and resource-constrained devices that interact with each other.
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