Abstract
While Bluetooth low energy (BLE) advertising is less power-intensive than scanning, emitting an always-on connectable advertisement consumes power. This disclosure describes techniques of power-efficient BLE advertising by using a proxy device to effect a seamless reconnection protocol between a central device and a peripheral device without user interaction. A companion device (e.g., a smartphone) paired with a peripheral (e.g., a smartwatch) acts as a BLE proxy. When a central device (e.g., a tablet) scans for the peripheral, the proxy advertises on behalf of the peripheral using encrypted certificates and identifiers. Such proxy advertising enables the central device to locate the proxy and to trigger the peripheral to begin BLE advertising when needed. Upon locating the peripheral through the proxy, the central device reconnects directly to the peripheral, establishing a secure, encrypted link. The techniques conserve the battery of the peripheral by shifting some BLE advertising to the proxy device, which usually has greater battery capacity.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Rajadhyaksha, Salil; Tiv, Arthur; and Zaslavsky, Igor, "Serverless Bluetooth Low Energy (BLE) Reconnection via Proxy", Technical Disclosure Commons, (June 13, 2025)
https://www.tdcommons.org/dpubs_series/8231