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I-MAC with Minimum Delay and Cross Layer Optimization for Wireless Sensor Networks

M.Amsanandhini , A. Jayamathi

Reducing the end to end delay is one of the main challenges in the Wireless Sensor Networks. Scheduling of the medium access control plays an important role in enhancing the performance of wireless sensor networks. In Sleep/wake up scheduling technique, nodes are operating in a low duty cycle and reduce end to end delay thus save energy and extend the network lifetime. I-MAC that involves the assignment of slots for each packet, wake up-sleep scheduling when combined with cross layer optimization would effectively reduce the end to end delay and thereby ensures energy efficient operation. Based on optimum energy flow at the cross layer the frame length could be revised and by this slots could be reused by TDMA Scheduling.