In LLN, nodes are organized into clusters.Sensed data which is compressed and fused by each cluster head is sent to base station through several sensor nodes.

• 在LLN协议机制中，节点以聚类的方式建立连接，观测数据经过聚类首领进行数据压缩融合处理后在节点间进行转发，最后被传送给远方的信息处理中心。