Node importance and spatial correlation-based MAC in WSN
Lan Li · Jisuanji yingyong yanjiu · 2010
This paper proposed a new node importance and spatial correlation-based MAC protocol(NISC-MAC),which defined the smaller nodes interrelated,i.e.,the nodes with great data difference,as the important nodes,and attributed it high priority.Those high priority nodes could send data with highly probability and backoff time shortly so that it was given highly priority in the competition to channel.And they could choose out the important nodes as the representative nodes,made sure those vital data send successfully to the sink node.This would ensure the overall effectiveness of data,made the data received reflect the real physical phenomenon.NISC-MAC is not only removal of spatial correlation of data,but also to ensure the overall effectiveness of data;the simulation experiment indicates the protocol ensure the overall effectiveness of data under low energy consumption and transmission delay.