Power reduction in RFID systems via Slotted Aloha Protocol

Power consumption in RFID nodes is influenced by a destructive element called interference, and researchers have intended to solve this problem through different algorithms in various studies. In this study some new algorithms under the title of DyATSA have been offered to overcome this problem and we presented a compositional method or protocol from two classes of tree-based and slotted-based which in fact they locate in the third class called Hybrid-based. Moreover, in the following we tried to pay significant attention to the performance of identifying the tag as far as possible through making this method dynamic in order to resolve the interference problem. Basically in RFID networks a parameter such as power consumption has a more basic role compared to other parameters. Supplying this limitation can lead to the loss of some of the other features. According to the considerations in the offered algorithm, the only parameter which was influenced negatively a bit was the imposed computational load parameter and memory consumption; the other parameters have improved or at least have had no negative changes. However this algorithm do not add significant improvement in power consumption to the networks for limited number of tag nodes, but in RFID networks, because the number of tag nodes is large in these networks, adding this feature to such nodes improves the power consumption in them.

Keywords:

Power consumption , RFID , Aloha network , interference