Research on NB-IoT Clustered RPL Multicast Routing Algorithm Based on Wireless Sensor Network
In order to improve the rotation mechanism of key forwarding nodes in wireless sensor networks based on the existing RPL multicast routing protocol,the energy remaining parameter and forwarding node re-placement threshold are added to the DAO message option.Based on the network size and the number of multi-cast receiving nodes,the forwarding node rotation threshold is set to allow energy-efficient forwarding nodes to participate in packet forwarding.When the node energy decreases to the set threshold,the forwarding node is switched to ensure that the energy consumption of each node is balanced,and the optimal forwarding node set is designed,It can be concluded through simulation that this algorithm can effectively control node energy con-sumption,improve the average usage time of network nodes,and extend the network lifetime.