A Receiver-Initiated MAC Protocol for Wireless Sensor Networks
Qian Lil · Chuangan jishu xuebao · 2014
In order to improve the transmission efficiency of nodes in wireless sensor networks,this paper proposes a synchronous receive-initiated medium access control protocol( SRI-MAC). While maintaining low energy consumption of nodes in the network,a parent-node in a local communication cluster invites more than one childnode to send multiple packets over an operation period by using multiple-invitation mechanism and burst-transmission mechanism. The multiple-invitation mechanism makes the parent-node able to receive packets from multiple child-nodes in an operation period. It intrinsically reduces the competition among child-nodes,enhances the channel utilization and strengthens the control of the parent-node for packet transmission. The burst-transmission mechanism allows the parent-node can continuously receive multiple packets in a communication which also enhances the channel utilization. Simulation results show that,when the traffic load becomes heavier,the method proposed in SRI-MAC enables the node to make full use of the channel and dramatically improves the transmission efficiency. SRI-MAC improves the throughput by 50%.