高效节能的传感器网络数据收集和聚合协议

A Distributed Energy-Efficient Data Gathering and Aggregation Protocol for Wireless Sensor Networks

提出了一种分布式的高效节能的传感器网络数据收集和聚合协议DEEG.此协议中节点自主地根据其剩余能量以及邻居节点的信号强度来竞争簇头,同时为了减小簇头节点的能量开销,簇头之间以多跳方式将收集到的数据发送到指定的簇头节点,然后通过该节点将整个网络收集的数据发送到基站.此外,该协议还提出了一种简单的簇覆盖方法,使得当节点密度提高时,传感器网络寿命相应于节点数量呈线性增长.实验证明,在没有使用簇覆盖方法的情况下,DEEG协议与其他两种数据收集和聚合协议(LEACH,PEGASIS)相比,在最好情况下,其网络寿命分别提高达1800%和300%,并且由于DEEG协议使得所有节点集中于最后40轮内全部死亡(网络寿命定义为最后一个节点死亡),因此,使用DEEG协议的传感器网络其监测结果具有很高的可靠性.

This paper proposes a distributed energy-efficient data gathering and aggregation protocol, in which a node, according to its residual energy and the strength of the signal received from its neighboring nodes, independently makes its decision to compete for becoming a cluster head. In addition, assume that the inter-cluster communication data in a multi-hop manner is sent to the designated node, it then sends the gathered data by the whole network to the base station. DEEG also proposes a simple approach to solve the cluster coverage problem. With the increase in node density, this approach produces a linear sensor network lifetime in the number of nodes. Experimental results have shown that compared with another two data gathering and aggregation protocols——leach and PEGASIS, the DEEG algorithm, in the best case, can lead to the increase of sensor network lifetime by 1800% and 300% respectively. Moreover, since all the nodes in the sensor network die in the last 40 rounds （the last node dies） in DEEG protocol, the reliability of the sensing information in DEEG is higher than that in LEACH and PEGASIS.