Wi-Fi scanning that searches neighboring access points (APs) is an essential prerequisite for Wi-Fi operations such as initial association and handover. As the traffic demand increases, APs are more densely deployed and the number of operating Wi-Fi channels also increases, which, however, results in additional scanning delay and makes the scanning a burdensome task. In this paper, we note that the co-location of Wi-Fi protocol with BLE protocol is a common practice in IoT networks, and develop a Wi-Fi passive scanning framework that uses BLE to assist scanning. Although the framework has great potential to improve scanning performance without explicit message exchanges, there are technical challenges related to time synchronization and channel switching delay. We address the challenges and develop a practical passive scanning scheme, named BLESS-Sync. We verify its performance through testbed experiments and extensive simulations, and show that BLESS-Sync significantly outperforms legacy Wi-Fi scanning in terms of scanning delay and energy efficiency.
|Title of host publication||INFOCOM 2021 - IEEE Conference on Computer Communications|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2021 May 10|
|Event||40th IEEE Conference on Computer Communications, INFOCOM 2021 - Vancouver, Canada|
Duration: 2021 May 10 → 2021 May 13
|Name||Proceedings - IEEE INFOCOM|
|Conference||40th IEEE Conference on Computer Communications, INFOCOM 2021|
|Period||21/5/10 → 21/5/13|
Bibliographical noteFunding Information:
This work was supported in part by Institute of Information communications Technology Planning Evaluation (IITP) grant funded by the Korea government (MSIT) (No.2018-0-00923), in part by Institute for Information communications Technology Promotion (IITP) grant funded by the Korean government (MSIT) (No. 2018-0-00815), and in part by the MSIT, Korea, under the ICT Creative Consilience program (IITP-2020-0-01819) supervised by the IITP.
© 2021 IEEE.
- Bluetooth low energy
- Wi-Fi scanning
ASJC Scopus subject areas
- Computer Science(all)
- Electrical and Electronic Engineering