Replica allocation for correlated data items in ad hoc sensor networks
Replica allocation for correlated data items in ad hoc sensor networks
复制标题
自组织传感器网络中相关数据项的副本分配
DOI：
10.1145/974121.974128
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
S. Nishio
中科院分区：
文献类型：
--
作者：
T. Hara;Norishige Murakami;S. Nishio
为了提高自组织网络中的数据可访问性，在我们之前的工作中，我们通过考虑从移动节点到每个数据项的数据访问频率和网络拓扑，提出了三种复制数据项的方法。在本文中，我们扩展了之前提出的方法来考虑数据项之间的相关性。在这些扩展方法下，基于数据项之间的相关性来定义每个数据项的数据优先级，并且以数据优先级在移动节点处复制数据项。我们通过模拟来证明扩展方法比原始方法更有效。
To improve data accessibility in ad hoc networks, in our previous work we proposed three methods of replicating data items by considering the data access frequencies from mobile nodes to each data item and the network topology. In this paper, we extend our previously proposed methods to consider the correlation among data items. Under these extended methods, the data priority of each data item is de-fined based on the correlation among data items, and data items are replicated at mobile nodes with the data priority. We employ simulations to show that the extended methods are more efficient than the original ones.