1st International IEEE Workshop on WIreless Systems: Advanced Research and Development

Research Article

S-WOW: Signature based Wake-on-WLAN

  • @INPROCEEDINGS{10.1109/COMSWA.2007.382460,
        author={ Nilesh Mishra and  Dhiraj Golcha and Akhilesh Bhadauria and  Bhaskaran Raman and  Kameswari Chebrolu},
        title={S-WOW: Signature based Wake-on-WLAN},
        proceedings={1st International IEEE Workshop on WIreless Systems: Advanced Research and Development},
        keywords={Batteries  Computer science  Costs  Energy consumption  IP networks  Land mobile radio cellular systems  Mesh networks  Photovoltaic cells  Power supplies  Web and internet services},
  • Nilesh Mishra
    Dhiraj Golcha
    Akhilesh Bhadauria
    Bhaskaran Raman
    Kameswari Chebrolu
    Year: 2007
    S-WOW: Signature based Wake-on-WLAN
    DOI: 10.1109/COMSWA.2007.382460
Nilesh Mishra1,*, Dhiraj Golcha1,*, Akhilesh Bhadauria1,*, Bhaskaran Raman1,*, Kameswari Chebrolu2,*
  • 1: Department of Computer Science and Engineering, Indian Institute of Technology Kanpur, India 208016
  • 2: Department of Electrical Engineering Indian Institute of Technology Kanpur, India 208016
*Contact email: nilmish@cse.iitk.ac.in, dgolchha@cse.iitk.ac.in, akhilb@cse.iitk.ac.in, braman@cse.iitk.ac.in, chebrolu@iitk.ac.in


Long distance Wi-Fi links are cost effective alternative to provide Internet and VoIP connectivity, in rural areas. In developing regions these low cost solutions have a challenge of an irregular power supply. In prior research Wake-on-WLAN has been proposed as a way of reducing power consumption by using low power sensor nodes to reduce the duty cycle of the more energy consuming Wi-Fi devices at a node. These sensor nodes wake-up the Wi-Fi device at the link node on receiving 802.11 traffic from neighboring link. The current Wake-on-WLAN implementation scheme suffers with false wake-up due to channel activity generated from noise in the operating frequency of the sensor node. In this work we devise a signature based wake-up mechanism called S-WOW, to avoid the false wake-ups. This is challenging as the sender and the receiver of a signature pattern at a link are operating with heterogeneous radios. Our scheme is robust enough to work in presence of periodic or non-periodic impulsive noise as well as prevents false wake-up when the channel is filled with (noise) energy.