Title :
Cognitive WSN transmission control for energy efficiency under WLAN coexistence
Author :
Glaropoulos, Ioannis ; Fodor, V. ; Pescosolido, Loreto ; Petrioli, Chiara
Author_Institution :
KTH (R. Inst. of Technol.), Stockholm, Sweden
Abstract :
In this paper we design a cognitive access scheme for WSNs that coexist with WLANs, considering the problem of blind and hidden WLAN terminals. The cognitive access scheme relies on a-priory known WLAN idle time distribution functions and repeated channel measurements to optimize the size of the transmitted data unit and the transmission distance, such that the normalized transmission energy is minimized. We compare the proposed scheme with simple carrier sensing and random access solutions and show that the energy gain is significant under typical WLAN utilization values.
Keywords :
cognitive radio; telecommunication control; wireless LAN; wireless channels; WLAN coexistence; WLAN idle time distribution functions; WLAN terminals; channel measurements; cognitive WSN transmission control; cognitive access scheme; energy efficiency; energy gain; normalized transmission energy; wireless local area network; wireless sensor network; Energy consumption; Interference; Sensors; Time measurement; Tuning; Wireless LAN; Wireless sensor networks;
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2011 Sixth International ICST Conference on
Conference_Location :
Osaka
Print_ISBN :
978-1-4577-0140-5
