Title :
Energy efficiency of p-persistent CSMA under variable traffic conditions
Author :
Voulgaris, Konstantinos ; Ashraf, Imran ; Karveli, Theodora ; Aghvami, A.H.
Author_Institution :
Centre for Telecommun. Res., King´´s Coll. London, London
Abstract :
Battery-powered wireless sensor networks (WSNs) are highly constrained in energy. In order to maximize the node and network lifetime, the energy usage has to be optimized. In this paper, we analyze the sources of energy consumption in p-persistent CSMA for non-saturated conditions, showing that maximum efficiency is achieved for a narrow range of traffic load. Furthermore, the optimum traffic load is a function of the consumption characteristics of the node and it does not guarantee maximum system throughput. Our analytical framework can be applied in various CSMA variants, thus aiding in the design of Medium Access Control (MAC) protocols for WSNs.
Keywords :
carrier sense multiple access; wireless sensor networks; battery-powered wireless sensor networks; consumption characteristics; energy consumption; energy efficiency; medium access control protocols; nonsaturated condition; p-persistent CSMA; variable traffic condition; Access protocols; Educational institutions; Energy consumption; Energy efficiency; Media Access Protocol; Multiaccess communication; Performance analysis; Telecommunication traffic; Throughput; Wireless sensor networks;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699841
