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Reliable Broadcast Protocol Based on Scheduled Acknowledgments For Wireless Sensor Networks
Mohamed A. Abd El-Gawad,HyungWon Kim 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.1
Wireless sensor network (WSN) consists of a large number of sensor nodes. Through wireless communication among these nodes, sensed information can be transferred from one node to another. If two or more nodes attempt to access the medium at the same time collision can happen and their data can be corrupted. Carrier sense multiple access (CSMA) can solve this problem by retransmitting the lost data until it receives a confirmation message from the intended receiver. In many network protocols like: routing, scheduling and synchronization, broadcasting important messages is crucial. If one of these broadcast messages is lost, a problem arises since conventional CSMA provides no recovery mechanism for broadcast messages. The aim of this paper is to propose a reliable broadcast algorithm to guarantee the delivery of all broadcast messages. The proposed algorithm has been implemented and its performance has been compared with the conventional CSMA.