Title :
Hidden nodes avoidance in wireless sensor networks
Author :
Bachir, Abdelmalik ; Barthel, Dominique ; Heusse, Martin ; Duda, Andrzej
Author_Institution :
France Telecom R&D, France
Abstract :
We propose a new access method for wireless multi-hop sensor networks. It reduces collisions due to hidden nodes, a source of significant energy dissipation. Our access method operates similarly to SMAC by alternating sleeping and active periods, but it does not use RTS/CTS. Instead, it adjusts the contention window so that the probability of collisions due to hidden nodes becomes negligible. We analyze the hidden node problem to derive expressions for the number of hidden nodes and the probability of collisions. We show the numerical results for different low power radios and validate our access method through simulation.
Keywords :
telecommunication congestion control; wireless sensor networks; collisions probability; collisions reduction; contention window; energy dissipation; hidden node problem; hidden nodes avoidance; wireless sensor networks; Batteries; Communication system traffic control; Energy consumption; Energy dissipation; Media Access Protocol; Radio transmitters; Research and development; Spread spectrum communication; Telecommunications; Wireless sensor networks;
Conference_Titel :
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Print_ISBN :
0-7803-9305-8
DOI :
10.1109/WIRLES.2005.1549478