Congestion control by sleep management in wireless sensor networks using Bluetooth technology

In order to analyze the effect of congestion in a sensor network, I have simulated a wireless sensor network with finite buffers operating on Bluetooth technology. The simulated network was tested without any congestion avoidance or power management algorithms. The obtained results were clearly showing the effects of congestion such as data packet drop rates, end-to-end delays and reduced throughput in the simulated network.; In order to alleviate the above mentioned problems due to congestion in the network, energy efficient congestion control algorithms have been designed. These algorithms operate by forcing the sensor nodes at the source to operate in a power saving mode based on the observed event reliability at the sink. The first algorithm keeps the whole network within the acceptable range of packet losses using the minimal slave activity. The second algorithm maintains the required (fixed) event reliability at the sink using minimal slave activity. (Abstract shortened by UMI.)...